КОМПОЗИЦИИ, ВКЛЮЧАЮЩИЕ СМЕСЬ МЕХАНИЧЕСКИ ПРОЧНЫХ РАССАСЫВАЮЩИХСЯ ПОЛИМЕРОВ С ТОЧНО УПРАВЛЯЕМЫМИ СКОРОСТЯМИ РАССАСЫВАНИЯ, СПОСОБЫ ИХ ОБРАБОТКИ И ПРОДУКТЫ ИЗ НИХ

... 1. Рассасывающаяся полимерная смесь, содержащая:смесь первого полимерного компонента и второго полимерного компонента,причем первый полимерный компонент имеет средневесовую молекулярную массу выше, чем средневесовая молекулярная масса второго полимерного компонента, ипричем по меньшей мере к одному из указанных компонентов по меньшей мере частично присоединена концевая группа карбоновой кислоты.2. Рассасывающаяся полимерная смесь по п. 1, в которой первый полимерный компонент имеет средневесовую молекулярную массу от приблизительно 42000 Да до приблизительно 175000 Да, и второй полимерный компонент имеет средневесовую молекулярную массу от приблизительно 1400 Да до приблизительно 24000 Да.3. Рассасывающаяся полимерная смесь по п. 2, в которой первый полимерный компонент имеет средневесовую молекулярную массу от приблизительно 75000 Да до приблизительно 100000 Да, и второй полимерный компонент имеет средневесовую молекулярную массу от приблизительно 4700 Да до приблизительно 5200 Да.4. Рассасывающаяся ...

ПОЛИМЕРНЫЙ МАТЕРИАЛ С МУЛЬТИМОДАЛЬНЫМ РАСПРЕДЕЛЕНИЕМ ПОР ПО РАЗМЕРУ

ПОЛИОЛЕФИНОВАЯ ПЛЕНКА ДЛЯ ПРИМЕНЕНИЯ В УПАКОВКЕ

Biologisch abbaubare Folie

Folie enthaltend 10 bis 50 Gew.-% einer Komponente A und 50 bis 90 Gew.-% einer Komponente B, bezogen auf die Summe der Komponenten A und B, wobei Komponente A ausgewählt ist aus der Gruppe bestehend aus Polymeren, die aus ringöffnender Polymerisation erhältlich sind und eine Glasübergangstemperatur (Tg) niedriger als –30°C haben und Komponente B ausgewählt ist aus der Gruppe bestehend aus thermoplastischen aliphatischen Copolyestern und Mischungen davon, wobei die Folie eine Gesamtdicke von 1 bis 200 μm sowie mindestens eine der folgenden mechanischen Eigenschaften aufweist: – Zugfestigkeit in trockenem Zustand in Extrusionsrichtung (MD) von mindestens 15 MPa gemäß EN ISO 527; – Zugfestigkeit in trockenem Zustand quer zur Extrusionsrichtung (TD) von mindestens 15 MPa gemäß EN ISO 527; – Reißdehnung in trockenem Zustand in Extrusionsrichtung (MD) von mindestens 100% gemäß EN ISO 527; – Reißdehnung in trockenem Zustand quer zur Extrusionsrichtung (TD) von mindestens 100% gemäß EN ISO 527 ...

Absorbable polymer blend compositions having enhanced nucleation rates

Novel absorbable, semi-crystalline, polymer blend compositions are disclosed exhibiting enhanced crystallization and nucleation rates. Also disclosed are medical device constructs, such as fibers made from such blends. The blends have a first absorbable polymeric component having a first molecular weight distribution and a second absorbable polymeric component which has an ultrahigh molecular weight distribution. The first and second polymeric components may be the same polymer.

Process for forming polylactide expanded bead foam

Expanded poly(lactide) (PLA) beads are made by pressurizing PLA beads with carbon dioxide at approximately room temperature, heating the beads under pressure to 90 to 160C to saturate and partially crystallize the beads, and then depressurizing and cooling the beads. The PLA beads contain a blend of PLLA and PDLA in certain ratios. The beads are useful for making expanded bead foam.

Branched aliphatic-aromatic polyester blends

Compositions of PHAs with aromatic/aliphatic polyester are described and methods of making the same.

Vinyl functional interpenetrating network polymers produced by physically mixing vinyl functional resins with thermoplastic resins compositions, methods of use and methods of preparation

The present disclosure pertains to methods and/or systems for making a SIPN and/or an IPN by physically mixing at least one vinyl functional thermoset with at least one thermoplastic resin. For example, a method of producing a resin composition comprising: mixing at least one vinyl functional thermoset resin with at least one thermoplastic resin wherein: the two resins are sufficiently miscible at a mixing viscosity of at least at least 5,000 cPs measured at the temperature of mixing and the mixing results in sufficient laminar flow such that a substantial portion of the resin mixture forms an IPN and/or a SIPN. The IPNs and/or SPINs formed have one or more superior properties over mixtures of the same resins.

Thermoformed article formed from a porous polymeric sheet

A thermoformed article that is formed from a polymeric sheet having a thickness of from about 0.1 to about 100 millimeters is provided. The polymeric sheet contains a thermoplastic composition that includes a continuous phase that includes a matrix polymer. A microinclusion additive and nanoinclusion additive are dispersed within the continuous phase in the form of discrete domains, and a porous network is defined in the composition that includes a plurality of nanopores having an average cross-sectional dimension of about 800 nanometers or less.

Mechanically strong absorbable polymeric blend compositions of precisely controllable absorption rates, processing methods, and products therefrom

Novel absorbable polymer blends are disclosed. The blends are useful for manufacturing medical devices having engineered degradation and breaking strength retention in vivo. The blends consist of a first absorbable polymeric component and a second absorbable polymeric component. The weight average molecular weight of the first polymeric component is higher than the weight average molecular weight of the second polymeric component. At least at least one of said components is at least partially end-capped by a carboxylic acid group. Further aspects are medical devices made therefrom.

Application of supercritical fluid technology for manufacturing soft tissue repair medical articals

APPLICATION OF SUPERCRITICAL FLUID TECHNOLOGY FOR MANUFACTURING SOFT TISSUE REPAIR MEDICAL Abstract A process for grafting polymers onto or within a substrate material is disclosed. The process includes exposing the substrate to a supercritical fluid composition including one or more aliphatic cyclic polyesters and a catalyst. (6079440_1):KZA ...

Polyolefin film for use in packaging

A polyolefin packaging film is provided. The polyolefin film is formed by a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores.

BALL SEALER FOR HYDROCARBON RESOURCE RECOVERY, METHOD FOR MANUFACTURING SAME, AND METHOD FOR TREATING BOREHOLE USING SAME

A ball sealer for hydrocarbon resource recovery, characterized by being obtained by coating a spherical core that comprises at least one layer comprising a disintegrable aliphatic polyester resin with a resin material that has higher impact resistance than the aliphatic polyester resin and by having a diameter of not less than approximately 25 mm (1 inch). This ball sealer has a large diameter, retains the property of being disintegrable after fracturing, and has impact resistance which makes the ball withstand high-velocity loading. The sealer is suitable for use in hydraulic fracturing, which is commonly used for recovering hydrocarbon resources including petroleum and gases. This large-diameter ball sealer can be efficiently formed with high dimensional accuracy by a method including at least one insert injection molding step.

SUPPORT MATERIALS FOR 3D PRINTING

A three-dimensionally printed article comprises a build material and a support material, the support material comprising a hydroxypropyl methylcellulose having a DS of at least 1.0 and an MS of at least 0.6, wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxypropoxyl groups. The support material can be removed from the build material by contacting the support material with water.

POLYMER FILM, AND DISPERSION LIQUID AND AGGLOMERATE USING SAME

Provided are: a polymer film characterized in that the average film thickness T0 along a straight line D passing through the center of gravity of a two-dimensional maximum-area projection satisfies equation (a), the average value L of distances 1 from the center of gravity to edges satisfies equation (b), the Young's modulus E satisfies equation (c), and the thickness deviation ? defined by equation (d) satisfies equation (e); and a liquid dispersion and an agglomerate using the same. (a) 10 nm ? T0 ? 1000 nm, (b)0.1 µm ? L ? 500 µm, (c) 0.01 GPa ? E ? 4.3 GPa, (d) ?=1-T1/T2, (e) 0.346E×10-9-1.499 < ? < -0.073E×10-9+0.316. According to the present invention, a polymer film which is easy to handle and has excellent compatibility, coatability, adhesiveness, and adhesion with respect to organ tissues; and a liquid dispersion and an agglomerate using the same can be provided.

BIODEGRADABLE POLYMER-BASED BIOCOMPOSITES WITH TAILORED PROPERTIES AND METHOD OF MAKING THOSE

A biodegradable composite including: (a) a polymeric matrix having a biodegradable polymer; (b) a filler; and (c) an anhydride grafted compatibilizer including one or more biodegradable polymers modified with an anhydride group. The composite may also include (d) polymer additives such as polymer chain extenders or plasticizers. An in situ method of manufacturing the biodegradable composite of the present invention, including the steps of: (a) melting one or more biodegradable polymers in the presence of a functional monomer and a free radical initiator to form a mixture; and (b) adding a filler and polymer additives to the mixture thereby manufacturing the biodegradable composite. A method of manufacturing a biodegradable polymer including (a) synthesizing a compatibilizer by (i) mixing a free radical initiator and a functional monomer, (ii) melting one or more biodegradable polymers to form a melt, and (iii) combining the product of step (i) and the melt of step (ii) thereby synthesizing ...

BLENDS OF A POLYLACTIC ACID AND A WATER SOLUBLE POLYMER

The present invention relates to water-dispersive biodegradable compositions which may be formed into films and fibres. The present invention also relates to polymer blends comprising polylactide and water-soluble polymers. More particularly, the present invention relates to the use of grafted copolymers (PLA-grafted water-soluble polymers) for the compatibilization of PLA and water-soluble polymers. Such reactive compatibilization of immiscible polymer blends is achieved in such a way that main blend components are covalently bonded. In addition, such reactive compatibilization can be carried out by reactive extrusion.

bezizotsianatnye polymers and methods of their synthesis

METHOD OF PRODUCTION OF PARTICLES, CONTAINING POLYLACTIC ACID

Degradable seedling growing tray with lignin modified PBAT/PLA (poly (butyleneadipate-co-terephthalate)/polylactic acid) as base material and preparation method of degradable seedling growing tray

Preparation method of antibacterial hydrophobic sponge

Film for VR product packaging and preparation method of film

Polyolefin resin foamed particle and foamed particle shaped body and with the molded body of the composite laminate

Dispersing agent for pigment concentrate, use thereof and masterbatches containing the dispersing agent

생분해성 폴리에스테르 혼합물

... 본 발명은 생분해성 폴리에스테르 혼합물로서, i) 성분 i 및 ii의 총 중량을 기준으로, 하기 a-1) 내지 e-1)로부터 형성된 폴리에스테르 I 45∼95 중량%: a-1) 성분 a 및 b의 총 중량을 기준으로, 지방족 C9-C18 디카르복실산 또는 C9-C18 디카르복실산 유도체 40∼70 중량%; b-1) 성분 a 및 b의 총 중량을 기준으로, 테레프탈산 또는 테레프탈산 유도체 30∼60 중량%; c-1) 성분 a 및 b의 총 중량을 기준으로, C3-C6 디올 98∼100 중량%; d-1) 성분 a 및 b의 총 중량을 기준으로, 적어도 3가 알콜 0∼2 중량%; e-1) 성분 a 내지 e의 총 중량을 기준으로, 쇄 연장제 0∼2 중량%; ii) 성분 i 및 ii의 총 중량을 기준으로, 하기 a-2) 내지 e-2)로부터 형성된 폴리에스테르 II 5∼55 중량%: a-2) 성분 a 및 b의 총 중량을 기준으로, 지방족 C4-C6 디카르복실산 또는 디카르복실산 유도체 40∼70 중량%; b-2) 성분 a 및 b의 총 중량을 기준으로, 테레프탈산 또는 테레프탈산 유도체 30∼60 중량%; c-2) 성분 a 및 b의 총 중량을 기준으로, C3-C6 디올 98∼100 중량%; d-2) 성분 a 및 b의 총 중량을 기준으로, 적어도 3가 알콜 0∼2 중량%; e-2) 성분 a 내지 e의 총 중량을 기준으로, 쇄 연장제 0∼2 중량%; iii) 중합체 혼합물 i 내지 iv의 총 중량을 기준으로, 탄산칼슘 10∼25 중량%; 및 iv) 중합체 혼합물 i 내지 iv의 총 중량을 기준으로, 탈크 3∼15 중량% 를 포함하는 생분해성 폴리에스테르 혼합물에 관한 것이다.

단일 펠렛 중합체 조성물

... 본 발명은 99.5 - 51 wt% 폴리올레핀과 0.5 - 49.9 wt% 폴리락트산 사이의 조성을 갖는 중합체 블렌드로 이루어진 펠렛에 관한 것이다.

MULTILAYER BIODEGRADABLE FILM

This invention relates to a multilayer biodegradable film which is particularly suitable for the manufacture of packaging and is also characterised by appreciable optical transparency properties in addition to high level mechanical properties ...

ADDITIVE FOR PERFORMANCE ENHANCEMENT OF BIOPOLYMER ARTICLES

Embodiments relate to an additive for a biopolymer article, a method for forming the additive and biopolymer articles and sheeting containing or formed using the additive. The additive includes at least one impact modifier between 10 - 90 weight% of the total weight of the additive; at least one polymer color concentrate between 5 - 50 weight% of the total weight of the additive; and at least one carrier resin between 5 - 50 weight% of the total weight of the additive.

Method of producing polymer microparticles

A method of producing polymer particles includes, in a system in which a polymer A and a polymer B are dissolved in and mixed with an organic solvent to undergo phase separation into two phases which are a solution phase containing the polymer A as a major component and a solution phase containing the polymer B as a major component, continuously adding an emulsion including the polymer A, the polymer B and the organic solvent, and a poor solvent for the polymer A to a vessel continuously to allow the polymer A to precipitate; and separating polymer A particles from the vessel continuously.

TPS/PLA/PBAT BLEND MODIFIED BIODEGRADABLE RESIN PREPARED BY USING CHAIN EXTENDER AND PREPARATION METHOD THEREOF

A thermoplastic starch (TPS)/polylactic acid (PLA)/poly(butylene adipate-co -terephthalate) (PBAT) blend modified biodegradable resin is prepared by using a chain extender, and is prepared from the following raw materials: 20-30 parts by weight of TPS; 20-30 parts by weight of PLA; 40-60 parts by weight of PBAT; and 0.5-0.9 parts by weight of a chain extender KL-E. The preparation method is a two-step method: blending the TPS with the PBAT in a twin screw for granulating; mixing TPS/PBAT mixed granules with PLA granules, and dissolving the chain extender KL-E into an ethyl acetate solution. The chain extender KL-E can be uniformly distributed in PLA and TPS/PBAT mixed granules by using a spraying method, and the remaining short-chain molecules and terminal carboxyl molecules in the mixed granules can be changed into long-chain molecules. 1. (canceled)2. A method for preparing a TPS/PLA/PBAT blend modified biodegradable resin by using a chain extender , comprising the steps of:(1) adding a chain extender KL-E into an ethyl acetate solution, and stirring until the chain extender KL-E is dissolved;(2) weighing and mixing TPS granules and PBAT granules, feeding mixed granules into a twin-screw extrusion granulator, blending in a twin screw in a high-temperature and high-shear manner, extruding the mixed granules out of a die orifice, stretching, air-cooling, and cold-cutting to obtain TPS/PBAT blend modified biodegradable resin granules; and(3) mixing the TPS/PBAT blend modified biodegradable resin granules with PLA granules, spraying the solution obtained in step (1) on a surface of the mixed granules by a spraying method, feeding the mixed granules into the twin-screw extrusion granulator, blending in the twin screw in the high-temperature and high-shear manner, extruding, stretching, and cold-cutting to obtain TPS/PLA/PBAT blend modified biodegradable resin granules.3. The method for preparing the TPS/PLA/PBAT blend modified biodegradable resin by using the chain ...

MESOSTRUCTURED POLYMER MEMBRANES AND OTHER ARTICLES

The present invention generally relates to porous membranes and other porous articles. In one aspect, the present invention is generally directed to porous membranes and other articles that have a pore size comparable to feature sizes of the extracellular matrix. Such articles may be useful, for example, for tissue engineering (e.g., as a substrate for culturing cells), as a filter, or for other applications. In some cases, the membranes may be formed from biocompatible and/or biodegradable materials. In some embodiments, such membranes may be formed using solvent evaporation induced self-assembly (EISA) techniques, although other techniques may be used in other embodiments. Still other aspects of the present invention are directed to methods of using such articles, kits involving such articles, and the like. 1. A composition , comprising:a porous article comprising an amphiphilic block copolymer and a hydrophobic block copolymer, the porous article comprising pores having an average pore size of between about 100 nm and about 1 micrometer, as determined using SEM.2. The composition of claim 1 , wherein the pores of the porous article has an average pore aspect ratio of at least about 2.3. The composition of any one of or claim 1 , wherein the pores of the porous article has an average pore aspect ratio of at least about 3.4. The composition of any one of - claim 1 , wherein the pores of the porous article has an average pore aspect ratio of at least about 4.5. The composition of any one of - claim 1 , wherein the article has a mass ratio of the hydrophobic block copolymer to the amphiphilic block copolymer of between about 1:1 and about 1:10.6. The composition of any one of - claim 1 , wherein the article has a mass ratio of the hydrophobic block copolymer to the amphiphilic block copolymer of between about 1:2 and about 1:8.7. The composition of any one of - claim 1 , wherein the article comprises fibers.8. The composition of claim 7 , wherein at least about 80 wt ...

COMPOSITION COMPRISING A MIXTURE OF POLYESTERS AND THERMOPLASTIC STARCH, HAVING IMPROVED FILM-FORMING ABILITY

The invention relates to a thermoplastic composition comprising: at least one mixture of polyesters (A) including at least one polylactic acid (A1) and at least one aliphatic polyester (A2) or a semi-aliphatic polyester other than polymer (A1); at least one starch (B); at least one organic plasticiser (C) for starch. The composition is characterised in that: the weight percentage of (A1) in relation to the weight of (A1) and (A2), expressed as dry weight, varies between 2 and 70%, advantageously between 10 and 50%, preferably between 18 and 30%; at least 50% of the weight of the polylactic acid (A1) is formed by semi-crystalline polylactic acid; and in that the weight ratio of starch (B)/organic plasticiser (C), expressed as dry weight, varies between 90/10 and 40/60.

WINDOW FOR DISPLAY DEVICE AND DISPLAY DEVICE INCLUDING THE WINDOW

A window for a display device including a plastic substrate having yield strain of greater than or equal to about 0.8% at about 85 degrees Celsius and 85% relative humidity and a hard coating layer disposed on at least one side of the plastic substrate.

Composition of polyester and thermoplastic starch, having improved mechanical properties

The invention relates to a composition comprising: at least one aliphatic polyester (A) comprising diols containing at least ethylene glycol, 1,4-butanediol or mixtures thereof and diacids containing at least succinic acid, adipic acid or mixtures thereof; at least one starch (B); at least one organic plasticiser (C) for starch; optionally, an additional polyester or a mixture of additional polyesters (D) different from polyester (A). The composition is characterised in that it also comprises citric acid (E), the amount by weight of citric acid varying between 0.01 and 0.45 parts per 100 parts of the total dry weight of (A), (B), (C) and (D).

Porous organic polymeric films and preparation

Porous organic polymeric films having multiple discrete cavities can be prepared using an water-in-oil emulsion that includes a cavity stabilizing hydrocolloid on the inner walls of the multiple discrete cavities. The multiple discrete cavities can also include organic catalytic materials for various catalytic reactions, markers materials for security applications, or the multiple discrete cavities can be used to increase opacity, hydrophobicity, or other desirable properties compared to nonporous organic polymeric films composed of the composition and dry thickness.

POROUS ORGANIC POLYMERIC FILMS AND PREPARATION

Porous organic polymeric films having multiple discrete cavities can be prepared using an water-in-oil emulsion that includes a cavity stabilizing hydrocolloid on the inner walls of the multiple discrete cavities. The multiple discrete cavities can also include organic catalytic materials for various catalytic reactions, markers materials for security applications, or the multiple discrete cavities can be used to increase opacity, hydrophobicity, or other desirable properties compared to nonporous organic polymeric films composed of the composition and dry thickness.

REINFORCED BIODEGRADABLE COMPOSITE MATERIAL

The present disclosure relates to a composite material comprising glass fiber and a polymer blend comprising polylactic acid (PLA) and polybutylene succinate (PBS), wherein the composite material comprises about 10 wt-% to about 80 wt-% of glass fibre, and wherein the polymer blend comprises about 20 wt-% to about 60 wt-% of PLA and about 40 wt-% to about 80 wt-% of PBS. The disclosure also relates to an article comprising the reinforced composite material.

Thermoformed article formed from a porous polymeric sheet

A thermoformed article that is formed from a polymeric sheet having a thickness of from about 0.1 to about 100 millimeters is provided. The polymeric sheet contains a thermoplastic composition that includes a continuous phase that includes a matrix polymer. A microinclusion additive and nanoinclusion additive are dispersed within the continuous phase in the form of discrete domains, and a porous network is defined in the composition that includes a plurality of nanopores having an average cross-sectional dimension of about 800 nanometers or less.

Polymeric blends and methods of using same

A film comprising a polylactic acid and polypropylene blend having a haze of from about 10% to about 95% and a gloss 45° of from about 50 to about 125. A method of producing an oriented film comprising blending polypropylene and polylactic acid to form a polymeric blend, forming the polymeric blend into a film, and orienting the film. A method of producing an injection molded article comprising blending polypropylene and polylactic acid to form a polymeric blend, injecting the polymeric blend into a mold, and forming the article.

BIOPOLYMER ROLL STOCK FOR FORM-FILL-SEALED ARTILE

PROCESS FOR MANUFACTURING PARTICLES COMPRISING POLYLACTIC ACID

POLYMERIC MICROPARTICLE COMPOSITIONS

A reinforced thermoplastic polyolefin elastomer film

A thermoplastic polyolefin elastomer film includes a continuous phase that includes a thermoplastic polyolefin elastomer and a nanoinclusion additive dispersed within the continuous phase in the form of discrete domains, wherein each discrete domain is elongated with a long axis, wherein the axes are aligned in the machine direction (MD) when the film is relaxed, and wherein the axes are aligned in the cross direction (CD) when the film is stretched in the CD. Also, an article includes the thermoplastic polyolefin elastomer film.

Surface functionalization

This invention is in the field of surface modification. In particular, the invention relates to the surface modification of microfluidic devices to alter surface hydrophobicity characteristics.

Resin-coated metal sheet for container

Provided is a resin-coated metal sheet which is for a container and which can adapt to the various properties required of a material for food cans. A resin coating layer (A) having a multi-layer structure and having polyester resin as the main component thereof is included on at least one surface of a metal sheet. The resin coating layer (A) is adhered to the surface of the metal sheet, and comprises a resin layer (a1) including (i) polyester resin, (ii) phenol resin, (iii) a metal alkoxide compound and/or a metal chelate compound, (iv) epoxy resin, and (v) at least any one component selected from the group consisting of polyamine resin, polyamideamine resin, and polyamide resin, with the polyester resin being the main component. It is preferable that a polyester film (a2) is formed on the upper layer of the resin layer (a1).

Polymeric material with a multimodal pore size distribution

A polymeric material having a multimodal pore size distribution is provided. The material is formed by applying a stress to a thermoplastic composition that contains first and second inclusion additives dispersed within a continuous phase that includes a matrix polymer. Through the use of particular types of inclusion additives and careful control over the manner in which such additives are dispersed within the polymer matrix, the present inventors have discovered that a unique, multimodal porous structure can be achieved.

METHOD OF RECYCLING LAMINATED MOLDING

A method of recycling a laminate shaped product, including the steps of: breaking a shaped product having a laminate structure including at least one layer of aliphatic polyester resin in addition to a principal resin layer, storing resultant broken pieces in a moisturizing environment to adjust a moisture content of the aliphatic polyester resin (layer) to at least 0.5 wt.%, and then washing the broken pieces with alkaline water to remove the aliphatic polyester resin layer, thereby recovering the principal resin. As a result, it becomes possible to shorten an induction period in the alkaline water washing step that is a principal process step, thereby rationalizing the entire process.

POLYLACTIDE-BASED MASTERBATCH, FOR A COMMERCIALLY VIABLE SINGLE-STEP IN-MOLD ANNEALING INJECTION MOLDING PROCESS

Polylactide (PLA) parts can be crystallized via two procedures. In the first procedure, i.e. a 2-step post-mold annealing process, the complete crystallization of PLA parts can be done after molding in a secondary operation called as post-mold annealing to make higher heat-resistant PLA parts. There are limitations to this 2-step operation, namely, a) warpage of parts with complex geometries, and b) scaling up higher production volume times. In the second procedure, i.e. 1-step in-mold annealing process, the complete crystallization of PLA parts can be done in the mold itself by holding the temperature of the mold at the crystallization temperature of PLA which is about 100°C. The 1-step in-mold annealing process using a masterbatch blended with neat PLA results in a highly crystalline article produced in a significantly lower cycle time.

LIQUID COMPOSITION COMPRISING BIOLOGICAL ENTITIES AND USES THEREOF

The present invention relates to a new liquid composition comprising biological entities having a polymer-degrading activity, a carrier and a solvent that may be advantageously used for the manufacture of a biodegradable plastic product.

TOUGHENING POLYLACTIC ACID WITH POLYHYDROXYALKANOATES

Compositions of polymer blends of polylactic acid (PLA) and polyhydroxyalkanoate are described. In certain embodiments, the PHA is a multiphase copolymer blend having one phase a fully amorphous phase with a glass transition temperature of below 20°C and is between about 5 to about 45% of the total PHA. Methods of making the compositions of the invention are also described. The invention also includes articles, films and laminates comprising the compositions.

BIODEGRADABLE POLYESTER MIXTURE

The invention relates to a biodegradable polyester mixture, containing: i) 45 to 95 wt%, with respect to the total weight of components i and ii, of a polyester I, which is synthesized from: a-1) 40 to 70 wt%, with respect to the total weight of components a and b, of an aliphatic C9-C18 dicarboxylic acid or a C9-C18 dicarboxylic acid derivative; b-1) 30 to 60 wt%, with respect to the total weight of components a and b, of terephthalic acid or a terephthalic acid derivative; c-1) 98 to 100 wt%, with respect to the total weight of components a and b, of a C3-C6 diol; d-1) 0 to 2 wt%, with respect to the total weight of components a and b, of an at least trivalent alcohol; e-1) 0 to 2 wt%, with respect to the total weight of components a to e, of a chain extender; and ii) 5 to 55 wt%, with respect to the total weight of components i and ii, of a polyester II, which is synthesized from: a-2) 40 to 70 wt%, with respect to the total weight of components a and b, of an aliphatic C4-C6 dicarboxylic ...

SALT MIXTURE OF BREAST ACID AND WATER SOLUBLE POLYMERS

PRODUCT FROM BIOMATERIAL BASED ON POMEGRANATE SUNFLOWER SEEDS OR HUSK SUNFLOWER SEEDS

Method for preparing antibacterial plastic wrap by using clove extract-garlic oil-beta cyclodextrin inclusion compound

LIQUID CRYSTAL POLYMER COMPOSITION FOR FOAM MOLDING, METHOD FOR PRODUCING FOAM MOLDED BODY, AND FOAM MOLDED BODY

ENVIRONMENT-FRIENDLY HEAT-SHRINKABLE FILM HAVING EXCELLENT HEAT CONTRACTION PROPERTY AND SELF-DECOMPOSING PROPERTY, USEFUL FOR PACKING MATERIAL

PURPOSE: An environment-friendly heat-shrinkable film is provided to have excellent transparency, thereby using for various packing uses including contraction use, to reduce carbon dioxide through the application thereof, and not to emit harmful material after being wasted. CONSTITUTION: An environment-friendly heat-shrinkable film comprises aliphatic polycarbonate resin. The heat contraction ratio of at least one direction is 30% or more after being treated by hot air of 70°C for 10 minutes. The aliphatic polycarbonate resin is obtained by copolymerization of carbon dioxide and an epoxide compound selected from alkylene oxide, cycloalkene oxide, and mixture thereof. The number average molecular weight(Mn) of the aliphatic polycarbonate resin is 50,000-1,000,000. COPYRIGHT KIPO 2012 ...

PREPARATION OF SOLVENT AND POLYMER REDISPERSIBLE FORMULATIONS OF DRIED CELLULOSE NANOCRYSTALS (CNC)

Flexible prepreg and uses thereof

A prepreg is provided. The prepreg is prepared by impregnating a liquid crystal polymer non-woven fabric with a thermal-curable resin composition or by coating a thermal-curable resin composition onto a liquid crystal polymer non-woven fabric and drying the impregnated or coated liquid crystal polymer non-woven fabric, wherein the thermal-curable resin composition comprises: (A) an unsaturated monomer; and (B) a cyclic olefin copolymer comprising the following repeating units: (B-1) a repeating unit of formula (I), (B-2) a repeating unit of formula (II),; and (B-3) a repeating unit of formula (III), R1 to R22, m, n, o, and p in formulas (I) to (III) are as defined in the specification, wherein based on the total moles of the repeating units (B-1) to (B-3), the content of the repeating unit (B-2) is 19 mol% to 36 mol%, and wherein the weight ratio of the cyclic olefin copolymer (B) to the unsaturated monomer (A) is 0.5 to 7.

Process for preparing nanoparticles in the form of a powder comprising a bio-resorbable polyester

A process can be used for preparing nanoparticles containing at least one bio-resorbable polyester. The nanoparticles are in the form of a powder with a Z-Average particle size Dz in the range of 1 to 450 nm, and with a polydispersity index PDI in the range of 0.01 to 0.5. The process involves emulsion-solvent extraction or emulsion-solvent evaporation, and application of ultrasonic sound.

BIOPOLYMER ROLL STOCK FOR FORM-FILL-SEALED ARTILE

A system and method for forming a biopolymer roll stock for a biopolymer form- fill-sealed package, the biopolymer roll stock includes at least one biopolymer resin; and at least one additive, the additive including at least one impact modifier between 5 - 50 weight% of the total weight of the additive; and at least one polymer color concentrate between 5 - 50 weight% of the total weight of the additive, whereby the biopolymer roll stock has a predetermined thickness and impact resistance.

Masterbatch comprising a cyclic ketone peroxide

Masterbatch comprising a dimeric and/or trimeric cyclic ketone peroxide dispersed in a polymeric matrix with a porosity, expressed as percentage of voids on the volume of the matrix, of 0.1-80 vol %, wherein said masterbatch comprises, per 100 g of polymeric matrix, 1-30 g dimeric and/or trimeric cyclic ketone peroxide and less than 0.20 g saturated hydrocarbons with 17-51 carbon atoms.

Application of Supercritical Fluid Technology for Manufacturing Soft Tissue Repair Medical Articles

A process for grafting polymers onto or within a substrate material is disclosed. The process includes exposing the substrate to a supercritical fluid composition including one or more aliphatic cyclic polyesters and a catalyst.

COMPOSITIONS AND FILMS COMPRISING POLYLACTIC ACID POLYMER, POLYVINYL ACETATE POLYMER AND PLASTICIZER

A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25 C; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.

Manufacturing method of polylactic acid composite composition

Disclosed is a method for manufacturing a polylactic acid composite composition, and a polylactic acid composite composition formed thereby. More particularly, there is disclosed a method for manufacturing a polylactic acid composite composition including: melting and blending a composition containing 60-80 wt % of a poly(L-lactic acid) resin, 15-30 wt % of a poly(D-lactic acid) resin and 5-10 wt % of a poly(ethylene-alkyl acrylate-glycidyl methacrylate) resin at 190-195° C.; and injecting the resulting melt in a mold whose surface temperature is 100-110° C. The present invention provides a material having superior heat resistance, impact strength and tensile strength by blending the PLLA resin, the PDLA resin and the poly(ethylene-alkyl acrylate-glycidyl methacrylate) resin at specific proportion, under controlled processing and molding conditions. The polylactic acid composite composition prepared according to the present invention can replace the petroleum-based general-use polymer resins ...

BIODEGRADABLE INJECTABLE GEL

ПРЕДМЕТ ОДЕЖДЫ, СОДЕРЖАЩИЙ ПОРИСТЫЙ ПОЛИМЕРНЫЙ МАТЕРИАЛ

Предлагается предмет одежды, который включает в себя пористый полимерный материал. Пористый полимерный материал образован из термопластичной композиции, содержащей непрерывную фазу, которая включает матричный полимер. Добавка микровключения и добавка нановключения также могут быть диспергированы в непрерывной фазе в форме дискретных доменов, и в материале определяется поровая сеть, которая включает множество нанопор со средним размером поперечного сечения приблизительно 800 нанометров или меньше. 2 н. и 37 з.п. ф-лы, 14 ил.

Biologisch abbaubare Polyesterzusammensetzung

Biologisch abbaubare Polyesterzusammensetzung, dadurch gekennzeichnet, dass sie die folgenden Komponenten in Gewichtsteilen umfasst:i) 60 bis 100 Teile biologisch abbaubarer aliphatisch-aromatischer Polyester;ii) 0 Teile Polymilchsäure;iii) 0 Teile eines organischen Füllstoffs und/oder eines anorganischen Füllstoffs;iv) 0 Teile eines Copolymers, das Epoxidgruppen enthält und auf Styrol, Acrylat und/oder Methacrylat beruht; wobei der Gewichtsgehalt des Tetrahydrofurans 8 ppm bis 100 ppm, bezogen auf das Gesamtgewicht der biologisch abbaubaren Polyesterzusammensetzung, beträgt; und der Gewichtsgehalt des Cyclopentanons 0,5 ppm bis 85 ppm, bezogen auf das Gesamtgewicht der biologisch abbaubaren Polyesterzusammensetzung, beträgt.

DISPERSING AGENT FOR PIGMENT CONCENTRATES, ITS USE AND THE DISPERSING AGENT ABSTENTION OF MASTERBATCHES

RESIN-COATED METAL SHEET FOR CONTAINERS

Provided is a resin-coated metal sheet which is for a container and which can adapt to the various properties required of a material for food cans. A resin coating layer (A) having a multi-layer structure and having polyester resin as the main component thereof is included on at least one surface of a metal sheet. The resin coating layer (A) is adhered to the surface of the metal sheet, and comprises a resin layer (a1) including (i) polyester resin, (ii) phenol resin, (iii) a metal alkoxide compound and/or a metal chelate compound, (iv) epoxy resin, and (v) at least any one component selected from the group consisting of polyamine resin, polyamideamine resin, and polyamide resin, with the polyester resin being the main component. It is preferable that a polyester film (a2) is formed on the upper layer of the resin layer (a1).

Biodegradable polyester composition

Disclosed in the present invention is a biodegradable polyester composition. The weight content of cyclopentanone is 0.5 ppm-85 ppm, based on the total weight of the biodegradable polyester composition. In the present invention, the degree of lubrication of a film during the blow molding of the biodegradable polyester composition can be improved by adding the cyclopentanone into the composition and controlling the content of the cyclopentanone in the composition in the range of 0.5 ppm-85 ppm. When the film blowing speed is 176 Kg/h, the maximum difference of the film thickness is less than 0.2 μm, the relative deviation of the film thickness is less than 1%, and the stability of film bubbles and the continuity of film blowing are ensured.

Garment containing a porous polymeric material

A garment that includes a porous polymeric material is provided. The porous polymeric material is formed from a thermoplastic composition containing a continuous phase that includes a matrix polymer. A microinclusion additive and nanoinclusion additive may also be dispersed within the continuous phase in the form of discrete domains, wherein a porous network is defined in the material that includes a plurality of nanopores having an average cross-sectional dimension of about 800 nanometers or less.

Water based dispersion to make coatings with increased MVTR barrier properties out of it

The present invention relates to an aqueous dispersion, comprising or consisting of A) at least one cyclic olefin copolymer, B) at least one surfactant; optionally C) at least one adhesion promoter; optionally D) at least one film-forming resin; optionally E) at least one additive; and F) water. Additionally, the invention relates to methods of manufacturing the aqueous dispersion, to an article, which comprises at least one substrate and at least one coating layer obtained from the aqueous dispersion and applied onto the substrate; and to the use of the aqueous dispersion for coating a substrate.

Hemp-based char or oils and polymers formed as fibers or films having enhanced properties

A process of forming a fiber comprised of a plurality of bio-char particles, comprising: combining a portion of a polymer with a hemp derivative, said hemp derivative selected form a hemp carbon made by pyrolyzing a quantity of hemp stalk at between 1100-1500°C to create a char; adding the char to a milling vessel and milling the char for a period of between 1 to 16 hours, and a full spectrum hemp extract, or combinations thereof, wherein the polymer and hemp derivative are extruded to form a fiber.

BIODEGRADABLE NANOSTRUCTURED COMPOSITES

A highly compatibilized biodegradable composite with high impact strength including: (a) a polymeric matrix having one or more biodegradable polymers; (b) one or more fillers; and (c) free radical initiators are fabricated via one-step reactive extrusion method. An in-situ free radical reaction method of manufacturing the biodegradable composite, including the step of (a) (1) mixing one or more biodegradable polymers and a free radical initiator; (2) melting step (1) thereby manufacturing the highly compatibilized biodegradable matrix. (b) Mixing the composites of step (a) and fillers or second biodegradable polymers, thereby manufacturing the biodegradable composite. Also, nano-blends are successfully prepared in this invention ascribe to the improved compatibility of the different components.

BIODEGRADABLE FILM

The invention relates to a film containing 10 to 50 wt.% of a component A and 50 to 90 wt.% of a component B, relative to the sum of components A and B, wherein component A is selected from the group consisting of polymers which are obtainable from ring-opening polymerization and have a glass transition temperature (Tg) lower than -30 °C and component B is selected from the group consisting of thermoplastic aliphatic copolyesters and mixtures thereof, wherein the film has a total thickness of 1 to 200 µm.

METHOD OF RECYCLING LAMINATED MOLDING

A method of recycling a laminated molding, comprising crushing a molding with laminate structure including a layer of main raw material resin, such as PET resin, and at least one layer of aliphatic polyester resin; storing the resultant fragments in a humidified atmosphere so that the water content of the aliphatic polyester resin (layer) is regulated to become 0.5 wt.% or higher; and thereafter washing the fragments with aqueous alkali to thereby remove the aliphatic polyester resin layer and recovering the main raw material resin layer. Thus, the induction period for the operation of aqueous alkali washing that is a main processing operation can be shortened with the result that the overall recovery operation can be streamlined.

WATER BASED DISPERSION TO MAKE COATINGS WITH INCREASED MVTR BARRIER PROPERTIES OUT OF IT

The present invention relates to an aqueous dispersion, comprising or consisting of A) at least one cyclic olefin copolymer, B) at least one surfactant; optionally C) at least one adhesion promoter; optionally D) at least one film-forming resin; optionally E) at least one additive; and F) water. Additionally, the invention relates to methods of manufacturing the aqueous dispersion, to an article, which comprises at least one substrate and at least one coating layer obtained from the aqueous dispersion and applied onto the substrate; and to the use of the aqueous dispersion for coating a substrate.

POLYMER FOAMS

A polymer composition that includes a polyolefin having a molecular weight distribution of greater than or equal to 8 as measured by GPC and a metallic acrylate salt. The present disclosure includes a process. The process includes supplying a polymer composition which includes a polyolefin resin having a molecular weight distribution of greater than or equal to 8 as measured by GPC and a metallic acrylate salt. The process further includes mixing polymer composition and the foaming agent to form a polymer foam.

VINYL FUNCTIONAL INTERPENETRATING NETWORK POLYMERS PRODUCED BY PHYSICALLY MIXING VINYL FUNCTIONAL RESINS WITH THERMOPLASTIC RESINS COMPOSITIONS, METHODS OF USE AND METHODS OF PREPARATION

The present disclosure pertains to methods and/or systems for making a SIPN and/or an IPN by physically mixing at least one vinyl functional thermoset with at least one thermoplastic resin. For example, a method of producing a resin composition comprising: mixing at least one vinyl functional thermoset resin with at least one thermoplastic resin wherein: the two resins are sufficiently miscible at a mixing viscosity of at least at least 5,000 cPs measured at the temperature of mixing and the mixing results in sufficient laminar flow such that a substantial portion of the resin mixture forms an IPN and/or a SIPN. The IPNs and/or SPINs formed have one or more superior properties over mixtures of the same resins.

POLYMER FOAMS

A polymer composition may include polyolefin having a molecular weight distribution of greater than or equal to 8 as measured by GPC and a metallic acrylate salt. The polymer composition may be characterized by one or more of: a melt flow rate of from 0. Ig/lOmin to 10 g/lOmin min; a melt flow viscosity between 2,000 Pa.s and 6,000 Pa.s; a die swell of between 2 and 8; and a die swell characteristic time of between 0.3 seconds and 1.2 seconds. The polymer composition may be in the form of foam. A process of forming foam may include supplying polymer composition including metallic acrylate salt and polyolefin resin, and mixing the polymer composition with foaming agent. A foam may include a polymer composition that includes polyolefin and polar polymer and does not include an ionomer. The foam may have a foam density of less than 0.25 g/cc.

BIOMATERIAL PRODUCT BASED ON SUNFLOWER SEED SHELLS AND/OR SUNFLOWER SEED HULLS

The invention relates to a biomaterial product based on sunflower seed shells and/or sunflower seed hulls. According to the invention, it is proposed that, instead of wood, bamboo or other wood-like fiber products, sunflower seed shells and/or sunflower seed hulls are used as starting material for the biomaterial products and for producing such products in order to thereby improve previous biomaterials, in particular also to make them more cost-effective and to improve their material properties.

A PROCESS FOR PRODUCING FOAM MOULDINGS

The present invention relates to a process for producing foam mouldings, comprising a) providing a first amount of expandable foam particles; b) providing a second amount of expandable foam particles; c) preparing a physical mixture on basis of said first and second amount of foam particles; d) introduction of the mixture of step c) into a mould and sintering under pressure and heat, wherein the chemical origin of the first amount of expandable foam particles differs from the chemical origin of the second amount of foam particles, the process further comprising the presence of a coating in the mixture before the introduction of the mixture into the mould.

MECHANICALLY STRONG BIOABSORBABLE TELECHELIC POLYMERIC COMPOSITIONS OF PRECISELY CONTROLLABLE ABSORPTION RATES, PROCESSING METHODS, AND PRODUCTS THEREFROM

Novel absorbable polymer blends are disclosed. The blends are useful for manufacturing medical devices having engineered degradation and breaking strength retention in vivo. The blends consist of a first absorbable polymeric component and a second absorbable polymeric component. The weight average molecular weight of the first polymeric component is higher than the weight average molecular weight of the second polymeric component. At least at least one of said components is at least partially end-capped by a carboxylic acid group. Further aspects are medical devices made therefrom.

BIODEGRADABLE SHEET

Disclosed is a biodegradable sheet comprising at least one layer which is a direct contact layer, intended to successfully contact materials, such as liquids, while maintaining the mechanical properties of the sheet and to extend the biodegradable sheet shelf life. The direct contact layer may comprise a hydrophobic polymer selected from poly(epsilon-caprolactone) (PCL) polyhydroxybutyrate (PHB), Polydioxanone (PDO) polyglycolic acid (PGA), polybutylene succinate (PBS), polybutylene succinate adipate (PBS A), poly lactic acid (PL A), polybutylene adipate terphtalate (PBAT), polyhydroxyalkanoates (PHA), such as polyhydroxybutyrates (PHB), polyhydroxyvalerates (PHV), and polyhydroxybutyrate-hydroxyvalerate copolymers (PHBV) or any mixture thereof. The biodegradable sheet may further comprise surface treated nanoclay particles, PVOH grafted with a crosslinker and PBS or PBS A The biodegradable sheet may further include at least one metalized, biodegradable, laminate layer.

ADDITIVE FOR PERFORMANCE ENHANCEMENT OF BIOPOLYMER ARTICLES

Embodiments relate to an additive for a biopolymer article, a method for forming the additive and biopolymer articles and sheeting containing or formed using the additive. The additive includes at least one impact modifier between 10 - 90 weight% of the total weight of the additive; at least one polymer color concentrate between 5 - 50 weight% of the total weight of the additive; and at least one carrier resin between 5 - 50 weight% of the total weight of the additive.

High-penetration type TPE (Thermoplastic Elastomer) type elastic toy high-glossiness lubricating master batch

Optical article comprising a hard coating layer and method for producing the same, and method for producing the same

Full-degradable mulch film with phosphate fertilizer slow release function, and preparation method thereof

POLYESTER COMPOSITION AND THERMOPLASTIC STARCH WITH IMPROVED MECHANICAL PROPERTIES

L'invention a pour objet une composition comprenant : • au moins un polyester (A) aliphatique comprenant des diols contenant au moins l'éthylène glycol, le 1,4-butanediol ou leurs mélanges et des diacides contenant au moins l'acide succinique, l'acide adipique ou leurs mélanges ; • au moins un amidon (B) ; • au moins un plastifiant organique (C) de l'amidon ; • optionnellement un polyester additionnel ou un mélange de polyesters additionnels (D) différents du polyester (A) ; caractérisée en ce que la composition comprend en outre de l'acide citrique (E), la quantité massique d'acide citrique allant de 0,01 à 0,45 parts par rapport à 100 parts de la masse sèche totale de (A), (B), (C) et (D).

BIODEGRADABLE FILMS OBTAINED FROM CASSAVA STARCH AND THEIR MANUFACTURE PROCESS

The present invention is related to the elaboration of flexible films from cassava starch for the manufacture of biodegradable packaging useful in the packing and packaging of dry foods and other products. The novel films of the invention are produced by extrusion of a mixture of cassava starch and plasticizer.

METHODS OF MANUFACTURING CORE-SHELL MICROPARTICLES, AND MICROPARTICLES FORMED THEREOF

Methods of manufacturing core-shell microparticles having a core comprising a hydrogel material and a shell comprising a hydrophobic polymer immiscible with the hydrogel material are presented. Core-shell microparticles having a core comprising a hydrogel material and a shell comprising a hydrophobic polymer immiscible with the hydrogel material, as well as core-shell microparticles manufactured using the methods, and pharmaceutical compositions comprising the core-shell microparticles are also presented.

PROCESSING METHOD AND PRODUCTS PRODUCED THEREBY

The present disclosure provides a method of processing shell material. Shell material processed in accordance with the methods disclosed herein may be biodegradable and may further represent a new type of useful material. By way of example, the processed shell material may be useable as a material to make useful materials, items, objects and/or tools.

Injection molded article comprising polypropylene and polylactic acid

A film comprising a polylactic acid and polypropylene blend having a haze of from about 10% to about 95% and a gloss 45° of from about 50 to about 125. A method of producing an oriented film comprising blending polypropylene and polylactic acid to form a polymeric blend, forming the polymeric blend into a film, and orienting the film. A method of producing an injection molded article comprising blending polypropylene and polylactic acid to form a polymeric blend, injecting the polymeric blend into a mold, and forming the article.

MULTI-PHASE MICROPARTICLES AND METHOD OF MANUFACTURING MULTI-PHASE MICROPARTICLES

Biologisch abbaubare Polyesterzusammensetzung

Biologisch abbaubare Polyesterzusammensetzung, dadurch gekennzeichnet, dass sie die folgenden Komponenten in Gewichtsteilen umfasst:i) 60 bis 100 Teile biologisch abbaubarer aliphatisch-aromatischer Polyester;ii) 0 bis 40 Teile Polymilchsäure;iii) 0 bis 35 Teile eines organischen Füllstoffs und/oder eines anorganischen Füllstoffs;iv) 0 bis 1 Teil eines Copolymers, das Epoxidgruppen enthält und auf Styrol, Acrylat und/oder Methacrylat beruht; wobei der Gewichtsgehalt des Tetrahydrofurans 19 ppm bis 81 ppm beträgt, bezogen auf das Gesamtgewicht der biologisch abbaubaren Polyesterzusammensetzung; und der Gewichtsgehalt des Cyclopentanons 0,5 ppm bis 85 ppm beträgt, bezogen auf das Gesamtgewicht der biologisch abbaubaren Polyesterzusammensetzung.

BIOLOGICALLY DEGRADABLE FOIL

Biodegradable film

Polylactic acid-based decorative body

A polylactic acid-based decorative body including a polylactic acid resin-containing substrate, a polylactic acid resin-containing adhesion layer provided on the substrate, and at least one functional layer that is formed on the adhesion layer by applying an acrylic urethane coating composition, wherein in the acrylic urethane coating composition, the molar ratio of OH groups in an acrylic resin to NCO groups in a polyfunctional isocyanate is 1:4 to 1:6.

Preparation method of clay/polymer composite using supercritical fluid-organic solvent system

The present invention relates to a method for preparing a clay/polymer composite having a predetermined form such as powder or porous foam with an enhanced thermal and mechanical stability using a simple, economical and eco-friendly supercritical fluid-organic solvent system, and more particularly, to a method for preparing a clay/biodegradable polymer stereoisomeric nanocomposite and a clay/polymer composite prepared by the method thereof. The method of preparing a clay/polymer composite according to the present invention may include (a) introducing a clay, a biodegradable single-phase D-type/L-type stereoisomeric polymer and an organic solvent into a reactor, (b) introducing a supercritical fluid into the reactor to form a stereoisomeric composite, and forming a clay/polymer composite dispersed with the clay on the stereoisomeric composite, and (c) collecting the clay/polymer composite, and the clay/polymer composite of the present invention is a clay/polymer composite prepared by the preparation method.

Injection Molded Article Comprising Polypropylene and Polylactic Acid

A film comprising a polylactic acid and polypropylene blend having a haze of from about 10% to about 95% and a gloss 45° of from about 50 to about 125. A method of producing an oriented film comprising blending polypropylene and polylactic acid to form a polymeric blend, forming the polymeric blend into a film, and orienting the film. A method of producing an injection molded article comprising blending polypropylene and polylactic acid to form a polymeric blend, injecting the polymeric blend into a mold, and forming the article.

LAMINATE FILM USING POLYLACTIC ACID-BASED RESIN

Our invention is a laminate film comprising a water-soluble resin layer and a polylactic acid-based resin layer laminated on at least one side of a substrate film, the water-soluble resin layer has a thickness of 0.1 to 15 μm, the polylactic acid-based resin layer has a thickness of 10 to 500 nm. Such a configuration provides a laminate film of which the water-soluble resin layer and the polylactic acid-based resin layer are easily separated from the substrate film and which is excellent in coating ability, adherence and followability to a soft and curved adherend, as well as compatibility to skin and organs such as viscera, so as to be suitable for wound dressing, adhesion prevention material and a skin external agent such as skin-care product. 1. A laminate film comprising a water-soluble resin layer and a polylactic acid-based resin layer laminated on at least one side of a substrate film , characterized in that the water-soluble resin layer has a thickness of 0.1 to 15 μm , the polylactic acid-based resin layer has a thickness of 10 to 500 nm.2. The laminate film according to claim 1 , wherein the water-soluble resin layer contains a polyvinyl alcohol.3. The laminated film according to claim 2 , wherein the polyvinyl alcohol has a saponification degree of 85 to 98.5 mol %.4. The laminate film according to claim 1 , wherein the polylactic acid-based resin layer contains a polylactic acid-based resin including a poly-D-lactic acid of 4 to 13 mol %.5. The laminate film according to claim 1 , wherein the water-soluble resin layer contains a pullulan.6. The laminate film according to claim 1 , wherein the substrate film has a center-line average surface roughness (SRa) of 3 to 50 nm and a ten-point average surface roughness (SRz) of 50 to 1000 nm. The present invention relates to a laminate film using a polylactic acid-based resin suitable for medical use such as wound dressing membrane and adhesion prevention membrane.Surgical operations typified by abdominal ...

POLYMER COMPOSITION FOR HIGHLY DISINTEGRATABLE FILM

This invention relates to a polymer composition which is particularly suitable for use in the manufacture of films having a great ability to disintegrate, preferably at low temperatures, which can be used in the mulch film sector. 1. A film comprising a composition comprising: [ a1) 70-100% by moles of units deriving from succinic acid, and', 'a2) 0-30% by moles of units deriving from at least one saturated dicarboxylic acid different from succinic acid, and, 'a) a dicarboxylic component comprising with respect to the total dicarboxylic component, b1) 95-100% by moles of units deriving from 1,4-butanediol, and', 'b2) 0-5% by moles of units deriving from at least one saturated aliphatic diol different from 1,4-butanediol;, 'b) a diol component comprising with respect to the total diol component], 'i) 55-80% by weight, with respect to the total weight of the composition, of at least one aliphatic polyester (i) comprising [ a1) 30-70% by moles of units deriving from at least one aromatic dicarboxylic acid, and', 'a2) 70-30% by moles of units deriving from at least one saturated aliphatic dicarboxylic acid,, 'a) a dicarboxylic component comprising with respect to the total dicarboxylic component, b1) 95-100% by moles of units deriving from at least one saturated aliphatic diol, and', 'b2) 0-5% by moles of units deriving from at least one unsaturated aliphatic diol; and, 'b) a diol component comprising with respect to the total diol component], 'ii) 5-40% by weight, with respect to the total weight of the composition, of at least one aliphatic-aromatic polyester (ii) comprisingiii) 1-25% by weight, with respect to the total weight of the composition, of at least one polyhydroxyalkanoate,{'sup': '2', 'said film having an impact strength index of at least 2 mJ/(g/m), measured according to standard ASTM D3420-08a.'}2. The film according to claim 1 , wherein the composition comprises:i)60-80% by weight, with respect to the total weight of the composition, of at least one ...

POROUS ORGANIC POLYMERIC FILMS AND PREPARATION

Porous organic polymeric films having multiple discrete cavities can be prepared using a water-in-oil emulsion that includes a cavity stabilizing hydrocolloid on the inner walls of the multiple discrete cavities. The multiple discrete cavities can also include organic catalytic materials for various catalytic reactions, markers materials for security applications, or the multiple discrete cavities can be used to increase opacity, hydrophobicity, or other desirable properties compared to nonporous organic polymeric films composed of the composition and dry thickness. 1. A porous organic polymeric film comprising a water-insoluble polymer that provides a continuous polymeric solid phase , and multiple discrete cavities having inner walls and that are uniformly dispersed within the continuous polymeric solid phase , wherein the porous organic polymeric film further comprises a cavity stabilizing hydrocolloid on the inner walls of the multiple discrete cavities.2. The porous organic polymeric film of claim 1 , further comprising an emulsifier having a hydrophilic-lipophilic balance value equal to or less than 6 claim 1 , which emulsifier is disposed at the interface of the multiple discrete cavities and the continuous polymeric solid phase of the porous organic polymeric film.3. The porous organic polymeric film of claim 2 , wherein the emulsifier is an amphiphilic block copolymer.4. The porous organic polymeric film of claim 4 , wherein the amphiphilic block copolymer comprises a hydrophilic segment comprising polyethyleneoxide and an oleophilic segment comprising polycaprolactone.5. The porous organic polymeric film of claim 1 , wherein the cavity stabilizing hydrocolloid is carboxymethyl cellulose (CMC) claim 1 , a gelatin or gelatin derivative claim 1 , a protein or protein derivative claim 1 , a hydrophilic synthetic polymer claim 1 , a water-soluble microgel claim 1 , a polystyrene sulfonate claim 1 , poly(2-acrylamido-2-methylpropane sulfonate claim 1 , a ...

Rotomoulded articles

A rotomoulded article having one or more layers includes a layer A. The layer A includes from 50 to 99.4 wt % of a polyolefin; from 0.5 to 50 wt % of a polyester; from 0.1 to 20 wt % of a co- or ter-polymer; and from 0.1 to 20 wt % of an ionomer.

A PROCESS FOR PREPARING FREE-STANDING FILMS OF CONDUCTIVE POLYMERS

The present invention relates to a process for the preparation of films of conductive polymers, by the technique so-called roll-to-roll, which allows to obtain freestanding films having advantageous features such as toughness, flexibility, ability to adhere to different substrates, a submicron thickness and a very high ratio surface area/thickness; the present films are suitable for use in several technological applications, in particular for the development of biosensors, and in the production of flexible electronic components with large surface, suitable for wearable devices and also intended for contacting skin. 1. A process for the preparation of free-standing films , comprising at least a surface layer of a conductive polymer , comprising:a) depositing of a layer of a first polymer on a temporary support, wherein said deposition is carried out by the roll-to-roll technique staring from said temporary support in the form of a film and from a solution of said first polymer, and drying of the so obtained film consisting of said temporary support and of said layer of a first polymer;b) depositing of a layer of a second polymer on said film obtained in step a), wherein said deposition is carried out by the roll-to-roll technique starting from the film of step a) and from an aqueous solution or dispersion of said second polymer, and said second polymer is a conductive polymer, and drying of the so obtained film consisting of said temporary support, a layer of said first polymer, and a layer of said second polymer; andc) detaching of said temporary support from the film coming from step b) by dissolving said layer of a first polymer by immersion in a solvent and consequent release of a mono-layered free-standing film of said second conductive polymer, or by peeling off said layer of a first polymer from said temporary support and consequent release of a bi-layered free-standing film of said first polymer and said second conductive polymer.2. The process according to ...

SUPPORT MATERIALS FOR 3D PRINTING

A three-dimensionally printed article comprises a build material and a support material, the support material comprising a hydroxypropyl methylcellulose having a DS of at least 1.0 and an MS of at least 0.6, wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxypropoxyl groups. The support material can be removed from the build material by contacting the support material with water. 1. A three-dimensionally printed article comprising a build material and a support material , the support material comprising a hydroxypropyl methylcellulose having a DS of at least 1.0 and an MS of at least 0.6 , wherein DS is the degree of substitution of methoxyl groups and MS is the molar substitution of hydroxypropoxyl groups , and the viscosity of the hydroxypropyl methylcellulose is up to 30 mPa·s , determined as a 2% by weight solution in water at 20° C.2. The article of wherein the amount of the hydroxypropyl methylcellulose is at least 50 weight percent of the total weight of the support material.3. The article of wherein the hydroxypropyl methylcellulose has a DS of at least 1.4.45.-. (canceled)6. The article of wherein the hydroxypropyl methylcellulose has a DS of from 1.6 to 2.5.7. The article of wherein the hydroxypropyl methylcellulose has an MS of from 0.6 to 1.7.8. The article of wherein the build material comprises a thermoplastic material selected from the group consisting of poly(acrylonitrile-butadiene-styrene) claim 1 , polycarbonate claim 1 , and polylactic acid.9. A method of printing a three-dimensional article comprising:selectively depositing layers of a fluid build material to form the three-dimensional article on a substrate; andsupporting at least one of the layers of the build material with a support material, the support material comprising a hydroxypropyl methylcellulose having a DS of at least 1.0 and an MS of at least 0.6, wherein DS is the degree of substitution of methoxyl groups and MS is the molar ...

Polyhydroxyalkanoate resin composition, molded body of the same, and film or sheet of the same

Provided is a polyhydroxyalkanoate resin composition containing a polyhydroxyalkanoate resin component. In differential scanning calorimetry of the resin composition, a highest melting peak temperature is 130° C. or higher, and a total crystalline melting enthalpy calculated from all melting peaks is in the range of 20 to 65 J/g. Preferably, the polyhydroxyalkanoate resin component is a mixture of at least two polyhydroxyalkanoate resins differing in crystalline melting enthalpy.

SPHERICAL MICROPARTICLES

The present invention relates to a composition of spherical microparticles composed of a wall material and at least one cavity that comprises a gas and/or a liquid, which have pores on the surface thereof, wherein the spherical microparticles have a mean particle diameter of 10-600 μm and wherein at least 80% of those microparticles, the particle diameter of which does not deviate from the mean particle diameter of the microparticles of the composition by more than 20%, each have on average at least 10 pores, the diameter of which is in the range from 1/5000 to 1/5 of the mean particle diameter, and, furthermore, the diameter of each of these pores is at least 20 nm, wherein the wall material consists of a composition comprising at least one aliphatic-aromatic polyester and at least one additional polymer, wherein the additional polymer is selected from the group consisting of polyhydroxy fatty acids, poly(p-dioxanones), polyanhydrides, polyesteramides, polysaccharides and proteins, to a method for the preparation thereof and use thereof. 116.-. (canceled)17. A composition of spherical microparticles composed of a wall material and at least one cavity that comprises a gas and/or a liquid , which have pores on the surface thereof , wherein the spherical microparticles have a mean particle diameter of 10-600 μm and wherein at least 80% of those microparticles , the particle diameter of which does not deviate from the mean particle diameter of the microparticles of the composition by more than 20% , each have on average at least 10 pores , the diameter of which is in the range from 1/5000 to 1/5 of the mean particle diameter , and , furthermore , the diameter of each of these pores is at least 20 nm , wherein the wall material consists of a composition comprising at least one aliphatic-aromatic polyester and at least one additional polymer , wherein the additional polymer is selected from the group consisting of polyhydroxy fatty acids , poly(p-dioxanones) , ...

Process For Producing Articles Formed From Polylactic Acid and Articles Made Therefrom

PLA polymers that can be expanded into microporous articles having a node and fibril microstructure are provided. The fibrils contain PLA polymer chains oriented with the fibril axis. Additionally, the PLA polymers have an inherent viscosity greater than about 3.8 dL/g and a calculated molecular weight greater than about 150,000 g/mol. The PLA polymer article may be formed by bulk polymerization where the PLA bulk polymer is made into a preform that is subsequently expanded at temperatures above the glass transition temperature and below the melting point of the PLA polymer. In an alternate embodiment, a PLA polymer powder is lubricated, the lubricated polymer is subjected to pressure and compression to form a preform, and the preform is expanded to form a microporous article. Both the preform and the microporous article are formed at temperatures above the glass transition temperature and below the melting point of the PLA polymer. 1. An article comprising:an expanded PLA polymer comprising a beta crystal phase and having nodes and fibrils.2. The PLA polymer article of claim 1 , wherein said fibrils comprise polymer chains and said polymer chains are oriented along a fibril axis.3. The PLA polymer article of claim 1 , wherein said expanded PLA polymer comprises at least one comonomer.4. The PLA polymer article of claim 1 , wherein said expanded PLA polymer comprises poly L-lactic acid (PLLA) claim 1 , poly d-lactic acid (PDLA) claim 1 , poly L-lactide claim 1 , poly D-lactide claim 1 , and combinations thereof.5. The PLA polymer article of claim 1 , wherein said expanded PLA polymer has a melt enthalpy greater than about 30 J/g.6. The PLA polymer article of claim 1 , wherein said expanded PLA polymer has an inherent viscosity greater than about 3.8 dL/g.7. The PLA polymer article of claim 6 , wherein said expanded PLA polymer has a molecular weight greater than about 150 claim 6 ,000 g/mol.8. The PLA polymer article of claim 6 , wherein said expanded PLA polymer ...

Polymer Composition Comprising Poly-Lactide-Polybutadiene Based Block copolymer

The present invention relates to a composition comprising: 1. A composition comprising:(a) at least one first polymer selected from the group consisting of poly-L-lactide-polybutadiene (PLLA-PB) block copolymer, poly-D-lactide-polybutadiene (PDLA-PB) block copolymer, poly-L-lactide-urethane-polybutadiene block copolymer, and poly-D-lactide-urethane-polybutadiene block copolymer, and mixture thereof; and(b) at least one second polymer selected from the group consisting of poly-L-lactide, poly-L-lactide-polybutadiene (PLLA-PB) block copolymer, poly-L-lactide-urethane-polybutadiene block copolymer, poly-L-lactide-urethane, poly-D-lactide, poly-D-lactide-polybutadiene (PDLA-PB) block copolymer, poly-D-lactide-urethane-polybutadiene block copolymer, poly-D-lactide-urethane, and mixtures thereof;wherein when the at least one first polymer is poly-L-lactide-polybutadiene (PLLA-PB) block copolymer, or poly-L-lactide-urethane-polybutadiene block copolymer, then the at least one second polymer is selected from the group consisting of poly-D-lactide, poly-D-lactide-polybutadiene (PDLA-PB) block copolymer, poly-D-lactide-urethane-polybutadiene block copolymer, poly-D-lactide-urethane, and mixtures thereof; orwherein when the at least one first polymer is poly-D-lactide-polybutadiene block copolymer, or poly-D-lactide-urethane-polybutadiene block copolymer, then the at least one second polymer is selected from the group consisting of poly-L-lactide, poly-L-lactide-polybutadiene block copolymer, poly-L-lactide-urethane-polybutadiene block copolymer, poly-L-lactide-urethane, and mixtures thereof;wherein said composition comprises from 40% to 99% by weight of said second polymer based on the total weight of the composition.2. The composition according to claim 1 , wherein the at least one first polymer is poly-L-lactide-polybutadiene (PLLA-PB) block copolymer and the at least one second polymer is selected from the group consisting of poly-D-lactide claim 1 , poly-D-lactide- ...

IMMOBILISATION DEVICE

The present invention relates to a template for a positioning, fixation, mobilization or immobilization device, wherein the template comprises a sheet of a thermoplastic material, wherein the thermoplastic material comprises between 3.0 and 95.0 wt. % of a poly-ε-caprolactone polymer, preferably a poly-ε-caprolactone homopolymer, and at least 5.0 wt. % of at least one second polymer material with a melting temperature of between 40 and 85° C., wherein the at least one second polymer material is selected from the group of one or more of a polyalkenamer or a thermoplastic linear polyurethane which contains as a polyol a poly ε-caprolactone or a polyester polyol, wherein the poly-ε-caprolactone polymer and the second thermoplastic material are cross-linked. 1. A template for a positioning , fixation , mobilization or immobilization device , wherein the template comprises a sheet of a thermoplastic material , wherein the thermoplastic material comprises between 3.0 and 95.0 wt. % of a poly-ε-caprolactone polymer , preferably a poly-ε-caprolactone homopolymer , and at least 5.0 wt. % of at least one second polymer material with a melting temperature of between 40 and 85° C. , wherein the at least one second polymer material is selected from the group of one or more of a polyalkenamer or a thermoplastic linear polyurethane which contains as a polyol a poly ε-caprolactone or a polyester polyol , wherein the poly-ε-caprolactone polymer and the second thermoplastic material are cross-linked.2. A template according to claim 1 , wherein the poly-ε-caprolactone polymer is present in the thermoplastic material in a concentration of between 15.0 and 90.0 wt. % claim 1 , preferably between 20.0 wt. % and 85.0 wt. %.3. A template according to claim 1 , wherein the thermoplastic polyurethane is present in the thermoplastic material in a concentration of between 5.0 and 97.0 wt. % claim 1 , preferably between 10.0 and 85.0 wt. % claim 1 , more preferably between 15.0 and 80.0 wt. %.4 ...

PHA Compositions Comprising PBS and PBSA and Methods for their Production

Compositions of PHAs with PBS and/or PBSA are described and methods of making the same. 119-. (canceled)21. The composition of claim 20 , wherein the blend of a first component and a second component is an unreacted blend.22. The composition of claim 20 , wherein the content of the first component in the blend is between 50% and 80% by weight.23. The composition of claim 22 , wherein the content of the first component in the blend is between 50% and 65% by weight.24. The composition of claim 20 , wherein the PHA is a PHA copolymer.25. The composition of claim 24 , wherein the PHA copolymer is a copolymer of a 3-hydroxyalkanoate claim 24 , a 4-hydroxyalkanoate claim 24 , or a 5-hydroxyalkanoate.26. The composition of claim 25 , wherein the PHA copolymer is a copolymer of a 3-hydroxybutyrate (PHB copolymer).27. The composition of claim 26 , wherein the PHA copolymer is a Type 1 PHB copolymer.28. The composition of claim 26 , wherein the PHA copolymer is a Type 2 PHB copolymer.29. The composition of claim 26 , wherein the PHA copolymer is a copolymer of a poly(3-hydroxybutyrate-co-3-hydroxypropionate) claim 26 , a poly(3-hydroxybutyrate-co-4-hydroxybutyrate) claim 26 , a poly(3-hydroxybutyrate-co-4-hydroxyvalerate) claim 26 , a poly(3-hydroxybutyrate-co-3-hydroxyvalerate) claim 26 , a poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) claim 26 , or a poly(3-hydroxybutyrate-co-5-hydroxyvalerate).30. The composition of claim 20 , wherein the second component is a PHA copolymer.31. The composition of claim 20 , wherein the first component is one of PBS and PBSA claim 20 , or a blend thereof.32. The composition of claim 20 , wherein the PHA is a PHA homopolymer.33. The composition of claim 32 , wherein the PHA homopolymer is a poly(3-hydroxyalkanoate claim 32 , a poly(4-hydroxyalkanoate) claim 32 , or a poly(5-hydroxyalkanoate).34. The composition of claim 33 , wherein the PHA homopolymer is a poly(3-hydroxybutyrate).35. The composition of claim 20 , wherein the second ...

Composition Containing a Polyetherimide and Low Naphthenic Liquid Crystalline Polymer

A polymer composition that comprises from about 1 to about 60 parts of at least one liquid crystalline polymer and 100 parts of at least one polyetherimide is provided. The liquid crystalline polymer includes repeating units derived from naphthenic hydroxycarboxylic acids, naphthenic dicarboxylic acids, or a combination thereof in an amount of about 15 mol. % or less of the polymer. 1. A polymer composition comprising from about 1 to about 60 parts of at least one liquid crystalline polymer and 100 parts of at least one polyetherimide , wherein the liquid crystalline polymer includes repeating units derived from naphthenic hydroxycarboxylic acids , naphthenic dicarboxylic acids , or a combination thereof in an amount of about 15 mol. % or less of the polymer , and wherein the polymer composition exhibits a tensile break stress of about 85 MPa or more , as determined according to ISO Test No. 527 at a temperature of 23° C.2. The polymer of claim 1 , wherein the repeating units derived from naphthenic hydroxycarboxylic acids claim 1 , naphthenic dicarboxylic acids claim 1 , or a combination thereof constitute about 8 mol. % or less of the liquid crystalline polymer.3. The polymer composition of claim 1 , wherein the liquid crystalline polymer comprises repeating units derived from 4-hydroxybenzoic acid.4. The polymer composition of claim 3 , wherein the liquid crystalline polymer further comprises repeating units derived from terephthalic acid claim 3 , isophthalic acid claim 3 , or a combination thereof.5. The polymer composition of claim 4 , wherein the monomer units derived from 4-hydroxybenzoic acid constitute from about 40 mol. % to about 95 mol. % of the polymer claim 4 , the monomer units derived from terephthalic acid constitute from about 1 mol. % to about 30 mol. % of the polymer claim 4 , and the monomer units derived from isophthalic acid constitute from about 1 mol. % to about 30 mol. % of the polymer.6. The polymer composition of claim 4 , wherein the ...

FOAMABLE RESIN COMPOSITION AND MOLDED FOAM

The present invention provides a foamable resin composition excellent in terms of the dispersibility and moldability. The foamable resin composition containing: from 30 to 80 wt % of a polyolefin; from 3 to 40 wt % of a polylactic acid; from 1 to 20 wt % of a modified polyolefin containing a carbonyl group in a molecule; from 10 to 40 wt % of a layered silicate; and from 0.01 to 0.5 wt % of a filler, the polyolefin containing at least one of polypropylene and polyethylene, the filler having a density different from the density of the layered silicate by at least 0.20 g/cm. 1. A foamable resin composition comprising:from 30 to 80 wt % of a polyolefin;from 3 to 40 wt % of a polylactic acid;from 1 to 20 wt % of a modified polyolefin containing a carbonyl group in a molecule;from 10 to 40 wt % of a layered silicate; andfrom 0.01 to 0.5 wt % of a filler,the polyolefin containing at least one of polypropylene and polyethylene,{'sup': '3', 'the filler having a density different from the density of the layered silicate by at least 0.20 g/cm.'}2. A molded foam obtained by foam molding the foamable resin composition according to .3. The molded foam according to claim 2 , obtained by blending a foamable resin composition comprising:from 30 to 80 wt % of a polyolefin;from 3 to 40 wt % of a polylactic acid;from 1 to 20 wt % of a modified polyolefin containing a carbonyl group in a molecule;from 10 to 40 wt % of a layered silicate; andfrom 0.01 to 0.5 wt % of a filler,the polyolefin containing at least one of polypropylene and polyethylene,{'sup': '3', 'the filler having a density different from the density of the layered silicate by at least 0.20 g/cm;'}and a supercritical fluid and making the resulting mixture foam.41. The molded foam according to claim 2 , obtained by injection molding a foamable resin composition comprising:from 30 to 80 wt % of a polyolefin;from 3 to 40 wt % of a polylactic acid;from 1 to 20 wt % of a modified polyolefin containing a carbonyl group in a ...

RESIN COMPOSITION AND METHOD OF PRODUCING THE SAME

Provided is a resin composition, including: a polycarbonate resin; a biomass resin having a hydroxy group; a rubber having a siloxane bond and having a functional group reactive with a hydroxy group; a flame retardant; and a drip preventing agent, in which: when a total of all the components is defined as 100 mass %, contents of the components are: biomass resin having a hydroxy group: 5 mass % or more to 25 mass % or less, the rubber having a siloxane bond and having a functional group reactive with a hydroxy group: 1 mass % or more to 9 mass % or less, the flame retardant: 3 mass % or more to 20 mass % or less, and the drip preventing agent: 0.1 mass % or more to 5 mass % or less; and a mass ratio of the biomass resin having a hydroxy group to the polycarbonate resin is 0.35 or less. 1. A resin composition comprising:a polycarbonate resin;a biomass resin having a hydroxy group;a rubber having a siloxane bond and having a functional group reactive with a hydroxy group;a flame retardant; anda drip preventing agent, a content of the biomass resin is 5 mass % to 25 mass %,', 'a content of the rubber is 1 mass % to 9 mass %,', 'a content of the flame retardant is 3 mass % to 20 mass %, and', 'a content of the drip preventing agent is 0.1 mass % to 5 mass %, and, 'wherein when a total content of all components in the resin composition is 100 mass %wherein a mass ratio of the biomass resin to the polycarbonate resin is 0.35 or less.2. The resin composition according to claim 1 , wherein the resin composition has a weight-average molecular weight of 30 claim 1 ,000 or more in terms of polystyrene measured by size exclusion chromatography.3. The resin composition according to claim 1 , wherein the resin composition satisfies formula (1):{'br': None, 'i': b+', 'c≦', 'd, '0.33.54\u2003\u2003(1),'}where:b represents the content of the biomass resin;c represents the content of the rubber; andd represents the content of the flame retardant.4. The resin composition according to ...

COMPOSITION FOR THE PREPARATION OF A NANOSTRUCTURED BIODEGRADABLE POLYMERIC MATERIAL, THE MATERIAL OBTAINED AND ITS APPLICATIONS

The composition comprises a mixture of: i) poly(L-, D-lactide) homopolymer and, optionally, poly(ε-caprolactone) homopolymer, and ii) poly(L-lactide) and poly(ε-caprolactone) diblock copolymer, where said copolymer has a molar mass of the L-lactide block of 20,000 g/mol to 200,000 g/mol and a molar mass of the ε-caprolactone block of 10,000 g/mol to 100,000 g/mol, with the molar ratio between the L-lactide block and the ε-caprolactone block of 2:1. The invention also refers to the nanostructured material obtained from this composition that is characterised by a nanostructure of two mutually self-assembled phases, one phase being formed by a polymeric matrix of poly(L-, D-lactide) units and the other phase by poly(ε-caprolactone) units self-assembled with the matrix and also its use for the manufacture of a plastic article in the form of a transparent film or thin sheet. 1. Biodegradable composition for the preparation of a nanostructured biodegradable polymeric material , characterised in that it comprises a mixture of:i) poly(L-, D-lactide) homopolymer (PLA) and, optionally, poly(ε-caprolactone) homopolymer (PCL), andii) poly(L-lactide) and poly(ε-caprolactone) diblock copolymer (CPB), wherein this copolymer has a molar mass of the L-lactide block of between 20,000 g/mol and 200,000 g/mol and a molar mass of the ε-caprolactone block of between 10,000 g/mol and 100,000 g/mol, with the molar ratio between the L-lactide block and the ε-caprolactone block being 2:1.2. Biodegradable composition of wherein the poly(ε-caprolactone) block of the copolymer is in a concentration of between 10% and 90% claim 1 , preferably between 20% and 80% claim 1 , and still more preferably between 20% and 40% of the weight of the poly(L- claim 1 , D-lactide) homopolymer (PLA).3. Biodegradable composition of comprising a mixture of:i) poly(L-, D-lactide) homopolymer (PLA) and poly(ε-caprolactone) homopolymer (PCL) andii) poly(L-lactide) and poly(ε-caprolactone) diblock copolymer (CPB), ...

Polyalkylene carbonate-based resin film

The disclosed relates to a polyalkylene carbonate-based resin film. More specifically, the present disclosure relates to a polyalkylene carbonate resin-based film comprising a blend resin in which a polyalkylene carbonate resin and a polyketone resin are mixed in a specified amount, thereby ensuring both excellent tensile strength and tear strength without deteriorating elongation properties possessed by the polyalkylene carbonate resin.

POYLMERIC COMPOSITION FOR USE AS A TEMPORARY SUPPORT MATERIAL IN EXTRUSION BASED ADDITIVE MANUFACTURING

The polymeric composition of this invention can be used as a temporary support material in the additive manufacturing of three dimensional articles without compromising the quality of the ultimate product, reducing printing speed, increasing cost, increasing the incidence of printer jamming, or requiring printers of increased complexity. This invention more specifically discloses a polymeric composition which is particularly useful as a temporary support material for utilization in three-dimensional printing, said polymeric composition being comprised of a first polymeric component which is suitable for use as a modeling material and a second polymeric component which is immiscible with the first polymeric component, wherein the polymeric composition has a continuous phase, wherein the continuous phase is comprised of the second polymeric component, and wherein the polymeric composition has a Shore A hardness of at least 80. 1. A polymeric composition which is particularly useful as a temporary support material for utilization in three-dimensional printing , said polymeric composition being comprised of a first polymeric component which is suitable for use as a modeling material and a second polymeric component which is immiscible with the first polymeric component , wherein the polymeric composition has a continuous phase , wherein the continuous phase is comprised of the second polymeric component , and wherein the polymeric composition has a Shore A hardness of at least 80.2. The polymeric composition as specified in wherein the first polymeric component is selected from the group consisting of poly(lactic acid) claim 1 , acrylonitrile-butadiene-styrene triblock polymers claim 1 , polycarbonate claim 1 , polystyrene claim 1 , high impact polystyrene claim 1 , polycaprolactone claim 1 , polyamides claim 1 , thermoplastic polyurethanes claim 1 , ethylene-vinyl acetate copolymers claim 1 , styrene-butadiene-styrene triblock polymers claim 1 , styrene-ethylene- ...

ENVIRONMENTALLY-FRIENDLY BOARD USING POLYLACTIC ACID AND WOOD FIBER, AND METHOD FOR PREPARING SAME

Disclosed are an environmentally-friendly board, which provides the advantages of energy reduction and greenhouse gas reduction and does not emit toxic substances such as toxic gas or endocrine-disrupting chemicals, and a method for preparing same. The environmentally-friendly board, according to the present invention, comprises a biodegradable resin composition including a polylactic acid resin, a crosslinking agent, and wood fiber, and thus provides the advantages of not emitting toxic substances such as toxic gas or endocrine-disrupting chemicals, securing water resistance of a product by PLA crosslinking, and not sticking to a processing tool when heat is applied during processing. 1. An environmentally friendly board formed of a biodegradable resin composition comprising a polylactic acid resin , a crosslinking agent , and wood fiber.2. The board according to claim 1 , wherein the biodegradable resin composition comprises 0.001 parts by weight to 10 parts by weight of the crosslinking agent and 50 parts by weight to 300 parts by weight of the wood fiber based on 100 parts by weight of the polylactic acid resin.3. The board according to claim 2 , wherein the crosslinking agent comprises at least one organic peroxide selected from among dicumyl peroxide (DCP) claim 2 , perbutyl peroxide (PBP) claim 2 , dimethyldi-t-butylperoxyhexane claim 2 , t-butylethylhexylmonoperoxycarbonate claim 2 , and 1 claim 2 ,1 -di(t-butylperoxy)-3 claim 2 ,3 claim 2 ,5 -trimethylcyclohexane.4. The board according to claim 1 , wherein the wood fiber has a specific gravity of 700 kg/mor less.5. The board according to claim 1 , wherein the wood fiber comprises less than 3.0 wt % of water.6. The board according to claim 1 , wherein the composition further comprises a crosslinking aid.7. The board according to claim 6 , wherein the crosslinking aid is present in an amount of 1.0 part by weight or less based on 100 parts by weight of the polylactic acid resin.8. A method for preparing an ...

PROCESS FOR PREPARATION OF BEADS FOR IMAGING

A process for the preparation of beads including a biocompatible hydrophobic polymer, a perfluorocarbon, polyvinylalcohol and optionally a metal compound, including the steps of: adding the perfluorocarbon and optionally the metal compound to a solution of the biocompatible hydrophobic polymer in a polar solvent to provide a first liquid mixture, adding the first liquid mixture to an aqueous solution of a biocompatible surfactant including polyvinylalcohol under sonication to obtain a second liquid mixture, a) maintaining the sonication of the second liquid mixture while cooling, b) evaporating the polar solvent from the second liquid mixture to obtain a suspension of beads including the biocompatible hydrophobic polymer, the perfluorocarbon and optionally the metal compound, c) separating the beads from the suspension and preparing a water suspension of the beads and d) freeze-drying the water suspension to obtain the beads, wherein the addition of the first liquid mixture to the biocompatible surfactant in step b) is performed within a period of at most 10 seconds, wherein the sonication in step b) and the sonication in step c) are performed directly into the liquid mixtures by for example a probe or flow sonicator at an amplitude of at least 120 μm for 0.01-10 minutes and wherein the weight ratio of the biocompatible surfactant to the biocompatible hydrophobic polymer is at least 3:1. Beads having close F-H2O interactions, which are suitable for imaging purposes. 1. A process for the preparation of beads comprising a biocompatible hydrophobic polymer , a perfluorocarbon , polyvinylalcohol (PVA) and optionally a metal compound , comprising the steps of:a) adding the perfluorocarbon and optionally the metal compound to a solution of the biocompatible hydrophobic polymer in a polar solvent to provide a first liquid mixture,b) adding the first liquid mixture to an aqueous solution PVA and optionally a biocompatible surfactant under sonication to obtain a second ...

METHOD OF PRODUCING POLYMER MICROPARTICLES

A method of producing polymer particles includes, in a system in which a polymer A and a polymer B are dissolved in and mixed with an organic solvent to undergo phase separation into two phases which are a solution phase containing the polymer A as a major component and a solution phase containing the polymer B as a major component, continuously adding an emulsion including the polymer A, the polymer B and the organic solvent, and a poor solvent for the polymer A to a vessel continuously to allow the polymer A to precipitate; and separating polymer A particles from the vessel continuously. 19.-. (canceled)10. A method of producing polymer particles comprising , in a system in which a polymer A and a polymer B are dissolved in and mixed with an organic solvent to undergo phase separation into two phases which are a solution phase containing said polymer A as a major component and a solution phase containing said polymer B as a major component , continuously adding an emulsion comprising said polymer A , said polymer B and said organic solvent , and a poor solvent for said polymer A to a vessel continuously to allow said polymer A to precipitate; and separating polymer A particles from said vessel continuously.11. The method according to claim 10 , wherein said emulsion formed by continuously supplying said polymer A claim 10 , said polymer B claim 10 , and said organic solvent to a mixing apparatus is added to said vessel.12. The method according to claim 10 , wherein said emulsion formed by continuously supplying each of a liquid obtained by dissolving said polymer A in said organic solvent and a liquid obtained by dissolving said polymer B in said organic solvent to said mixing apparatus is added to said vessel.13. The method according to claim 10 , wherein said organic solvents in each of said phases when said phase separation into two phases occurs are identical.14. The method according to claim 10 , wherein said poor solvent is continuously added from two or ...

PREPARATION OF SOLVENT AND POLYMER REDISPERSIBLE FORMULATIONS OF DRIED CELLULOSE NANOCRYSTALS (CNC)

The disclosure provides redispersible CNC. The CNC disclosed herein is redispersible in non-polar and polar organic solvents as well as polar and non-polar polymers such as polyethylene or polypropylene. The disclosure surprisingly also provides redispersible CNC bearing improved redispersion in aqueous systems and most particularly in high ionic strength aqueous systems which usually require significant mixing energy to achieve dispersion. 1. A redispersible cellulose nanocrystal (CNC) wherein said CNC is comprising non-covalent ionic adduct of a cationic groups formed from a protonated amine compound and anionic groups formed from titrable acidic groups , wherein said titrable acidic groups are located at the surface of said CNC , wherein said titrable acid group is comprising sulfate or phosphate half-esters , carboxylic acids or mixtures thereof , and wherein said redispersible CNC is in an isolated dried form.2. The redispersible CNC as defined in claim 1 , wherein said titrable acid group is comprising sulfate half-esters (unmodified or desulfated) claim 1 , carboxylic acids or mixtures thereof.3. The redispersible CNC as defined in claim 1 , wherein said amine compound is an amine-terminated polyalkane claim 1 , an amine-terminated polyalkylether or an amine-terminated polyalkylene imine.4. The redispersible CNC as defined in claim 1 , wherein said amine compound is a monoamine-terminated polyalkane claim 1 , a monoamine-terminated polyalkylether or a monoamine-terminated polyalkylene imine.5. The redispersible CNC as defined in claim 1 , wherein said amine compound is monoamine-terminated polyalkylether having the formula:{'br': None, 'sub': 1', '2', 'x', 'a', '2', '3', 'b', '2, 'R—[O(CH)]—[OCHCH(CH)]—NH'}wherein said polyalkylether may be a homopolymer, an AB or ABA block copolymer, or an alternating copolymer;{'sub': 1', '1', '1, 'Ris H, or selected from an optionally substituted, linear or branched alkyl of 1 to 14 carbon atoms; or Ris an optionally ...

Polymeric Material with a Multimodal Pore Size Distribution

A polymeric material having a multimodal pore size distribution is provided. The material is formed by applying a stress to a thermoplastic composition that contains first and second inclusion additives dispersed within a continuous phase that includes a matrix polymer. Through the use of particular types of inclusion additives and careful control over the manner in which such additives are dispersed within the polymer matrix, the present inventors have discovered that a unique, multimodal porous structure can be achieved. 131-. (canceled)32. A porous polymeric material that contains a thermoplastic composition , the thermoplastic composition including a continuous phase in which a first inclusion additive and second inclusion additive are dispersed in the form of discrete first and second domains , respectively , the continuous phase including a matrix polymer , wherein a plurality of micropores are formed at and/or around the first domains that have an average cross-sectional dimension of from about 0.5 to about 30 micrometers , and wherein a plurality of nanopores are formed at and/or around the second domains that have an average cross-sectional dimension of from about 50 to about 500 nanometers.33. The porous polymeric material of claim 32 , wherein the micropores have an average cross-sectional dimension of from about 60 to about 450 nanometers.34. The porous polymeric material of claim 32 , wherein the nanopores have an average cross-sectional dimension of from about 1 to about 20 micrometers.35. The porous polymeric material of claim 32 , wherein the first domains have an average cross-sectional dimension of from about 0.05 to about 50 micrometers.36. The porous polymeric material of claim 32 , wherein the second domains have an average cross-sectional dimension of from about 50 to about 500 nanometers.37. The porous polymeric material of claim 32 , wherein the porous network further comprises a plurality of second nanopores that are formed at and/or around ...

Polyurethane elastomer, thermoplastic resin composition comprising the polyurethane elastomer, molded article made of the thermoplastic resin composition, and method of preparing the polyurethane elastomer

A polyurethane elastomer including a polymerization product of an amide group-including compound, a polyol compound, a polybasic acid compound, and a diisocyanate compound, a thermoplastic resin composition including the polyurethane elastomer, a molded article made of the thermoplastic resin composition, and a method of preparing the polyurethane elastomer.

ANTI-CURLING FILM

An anti-curling film is provided. The anti-curling film includes a first portion and a second portion covering the first portion. The first portion includes polylactic acid (PLA), polycaprolactone (PCL), polyethylene glycol dimethacrylate (PEGDMA) and a photoinitiator. The second portion includes polycaprolactone (PCL), gelatin, hyaluronic acid (HA), alginate (AA), polyvinyl alcohol (PVA) or a combination thereof. 1. An anti-curling film , comprising:a first portion comprising polylactic acid (PLA), polycaprolactone (PCL), polyethylene glycol dimethacrylate (PEGDMA) and a photoinitiator; anda second portion covering the first portion, wherein the second portion comprises polycaprolactone (PCL), gelatin, hyaluronic acid (HA), alginate (AA), polyvinyl alcohol (PVA) or a combination thereof.2. The anti-curling film as claimed in claim 1 , wherein polyethylene glycol dimethacrylate (PEGDMA) has a grafting rate which is between 65% and 72%.3. The anti-curling film as claimed in claim 1 , wherein polylactic acid (PLA) claim 1 , polycaprolactone (PCL) and polyethylene glycol dimethacrylate (PEGDMA) have a weight ratio which is between 0.5:1:1 and 0.5:1:6.4. The anti-curling film as claimed in claim 1 , wherein the first portion comprises a first layer and a second layer.5. The anti-curling film as claimed in claim 4 , wherein the first layer comprises polycaprolactone (PCL) and polyethylene glycol dimethacrylate (PEGDMA) claim 4 , and polycaprolactone (PCL) and polyethylene glycol dimethacrylate (PEGDMA) have a weight ratio which is between 1:6 and 1:12.6. The anti-curling film as claimed in claim 4 , wherein the second layer comprises polyethylene glycol dimethacrylate (PEGDMA) and polylactic acid (PLA) claim 4 , and polyethylene glycol dimethacrylate (PEGDMA) and polylactic acid (PLA) have a weight ratio which is between 1:1 and 3:1.7. The anti-curling film as claimed in claim 1 , wherein polyethylene glycol dimethacrylate (PEGDMA) claim 1 , polylactic acid (PLA) and the ...

OPAQUE PP/PLA BOPP FILMS WITH BROAD PROCESSING WINDOW

A film having a polypropylene and polylactic acid blend having a haze of from about 10% to about 100% and a gloss 45° of from about 20 to about 150. 1. A film comprising a polypropylene and a polylactic acid blend having a haze of from about 10% to about 100% and a gloss 45° of from about 50 to about 150.2. The film of wherein the polypropylene further comprises a polypropylene homopolymer claim 1 , a high crystallinity polypropylene claim 1 , a polypropylene heterophasic copolymer claim 1 , a polypropylene copolymer claim 1 , or combinations thereof.3. The film of with a DSC first melting point of 160° C. to 170° C.4. The film of wherein: the polypropylene is present in an amount of from 51 wt. % to 99 wt. % by weight of the blend claim 1 , and the polylactic acid is present in an amount of 1 wt. % to 40 wt. % by weight of the blend.5. The film of further comprising a cavitating booster which comprises a polypropylene functionalized with a maleated PP.6. The film of further comprising a silica-based matting agent.7. The film of claim 6 , wherein the silica-based matting is present in an amount of between 0.1% and 2% by weight of the blend.8. The film of further comprising an inorganic filler.9. The film of claim 1 , wherein the ratio of the PO to PLA in the PO/PLA blend is between 4:1 and 199:1.10. The film of wherein the inorganic filler comprises calcium carbonate claim 8 , titanium dioxide claim 8 , kaolin claim 8 , alumina trihydrate claim 8 , calcium sulfate claim 8 , talc claim 8 , mica claim 8 , glass microspheres claim 8 , or combinations thereof.11. The film of wherein the inorganic filler is calcium chloride and the calcium chloride is present in an amount of from 1% to 30% by weight of the blend.12. An opaque film comprising of a polylactic acid and polypropylene blend having a haze of about 90%-100% and a gloss 45° of from about 20 to about 150.13. The film layer of wherein the film is biaxially oriented.14. The film of having an opaque film density of ...

Film Comprising Polylactic Acid Polymer Suitable for Graphic Articles

An article is described comprising a first film layer comprising polylactic acid polymer (semicrystalline polylactic acid polymer; amorphous polylactic acid polymer; or a mixture thereof); a second (e.g. polyvinyl acetate) polymer having a Tg of at least 25° C.; plasticizer. In some embodiment, the film layer further comprises inorganic pigment and/or hydrolysis stabilizer. In other embodiments, the film has a net melting endotherm, ΔH, of less than 10 J/g. Also described are methods of making a graphic film. 1. An article comprisinga first film layer comprisingsemicrystalline polylactic acid polymer;optionally amorphous polylactic acid polymer;a second polymer having a Tg of at least 25° C.;plasticizer;hydrolysis stabilizer; andan inorganic pigment in an amount such that the ratio of polylactic acid polymer to inorganic pigment is less than 4.5:1.2. The article of wherein the inorganic pigment comprises TiO.3. The article of wherein the amount of inorganic pigment is at least 15 claim 1 , 16 claim 1 , 17 claim 1 , 18 claim 1 , 19 claim 1 , or 20 wt. % of the first film layer.4. The article of wherein the ratio of polylactic acid polymer to inorganic pigment is at least 1:1 and less than 4.4:1 claim 1 , 4.3:1 claim 1 , 4.2:1 claim 1 , 4.1:1 or 4:1.5. The article of wherein the second polymer is a polyvinyl acetate polymer.6. The article of wherein the hydrolysis stabilizer is a carbodiimide compound.7. The article of wherein the article is a graphic film further comprising a graphic proximate a major surface of the film layer.8. The article of wherein the graphic comprises a dried and/or cured ink layer.9. (canceled)10. The article of further comprises a topcoat layer or cover film disposed on the graphic.11. The article of wherein the cover film is bonded to the graphic with an adhesive layer.12. The article of wherein the cover film comprises a semicrystalline polylactic acid polymer.13. The article of wherein the first film layer comprises an amorphous polylactic ...

Additive for performance enhancement of pla articles

Embodiments of the invention relate to method and an additive for a PLA article comprising at least one acrylic impact modifier between 10 and 80 weight % of the total weight of the additive; and at least one vinyl acetate ethylene copolymer (EVA) having ≧12 Wt % vinyl acetate, the EVA between 5 and 50 weight % of the additive; and at least one PLA carrier resin between 5 and 50 weight % of the total weight of the additive.

Polyolefin Material having a Low Density

A polyolefin material that is formed by solid state drawing of a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores. 141-. (canceled)42. A polyolefin material that is formed by drawing of a thermoplastic composition , wherein the thermoplastic composition contains a continuous phase that includes a polyolefin matrix polymer and a nanoinclusion additive dispersed within the continuous phase in the form of discrete domains , wherein a porous network is defined in the composition that includes a plurality of nanopores having an average cross-sectional dimension of about 800 nanometers or less , the composition having a density of about 0.90 g/cmor less.43. The polyolefin material of claim 42 , wherein the nanopores have an average cross-sectional dimension of from about 5 to about 700 nanometers.44. The polyolefin material of claim 42 , wherein nanopores have an average axial dimension of from about 100 to about 5000 nanometers.45. The polyolefin material of claim 42 , wherein the polyolefin matrix polymer has a melt flow rate of from about 0.5 to about 80 grams per 10 minutes as determined at a load of 2160 grams and at 230° C. in accordance with ASTM D1238.46. The polyolefin material of claim 42 , wherein the polyolefin matrix polymer is a propylene homopolymer claim 42 , propylene/α-olefin copolymer claim 42 , ethylene/α-olefin copolymer claim 42 , or a combination thereof.47. The polyolefin material of claim 42 , wherein the polyolefin matrix polymer is a substantially isotactic polypropylene homopolymer or a copolymer containing at least about 90% by weight propylene.48. The polyolefin material of claim 42 , wherein the continuous phase ...

BLOCK COPOLYMERS FOR DIRECTED SELF-ASSEMBLY APPLICATIONS

Block copolymers (BCPs) for self-assembly applications comprise a linear fluorinated linking group L′ joining a pair of adjacent blocks. A film layer comprising a BCP, which is disposed on an underlayer and in contact with an atmosphere, is capable of forming a perpendicularly oriented domain pattern when the underlayer is preferentially wetted by one domain of an otherwise identical self-assembled BCP in which all fluorines of L′ are replaced by hydrogen. The BCP can be a low-chi or high-chi BCP. In a preferred embodiment, the BCP comprises a styrene-based first block, and a second block comprises a carbonate and/or ester repeat unit formed by ring opening polymerization of a cyclic carbonate and/or cyclic ester monomer. The linking group L′ has a lower surface energy than each of the polymer blocks. 1. A block copolymer , comprising:a first polymer block (block A);a second polymer block (block B) having a chemical structure different from block A and capable of phase-segregating from block A; anda divalent linking group L′ covalently linking an end repeat unit of block A to an end repeat unit of block B, wherein L′ comprises 1-24 fluorines, wherein each of the fluorines of L′ is linked to a backbone carbon of the block copolymer.2. The block copolymer of claim 1 , wherein a film layer comprising the block copolymer is capable of self-assembling spontaneously and/or when thermally treated claim 1 , thereby forming a pattern of phase-segregated alternating domains comprising respective chemically distinct blocks of the block copolymer.4. The block copolymer of claim 1 , wherein L′ has a lower surface energy than block A and a lower surface energy than block B.5. The block polymer of claim 1 , wherein L′ has a surface energy between 0 and 30 mN/m.8. The block copolymer of claim 1 , wherein block B comprises an aliphatic carbonate repeat unit.9. The block copolymer of claim 8 , wherein the aliphatic carbonate repeat unit comprises a pendent ester group.11. The block ...

Garment Containing a Porous Polymer Material

A garment that includes a porous polymeric material is provided. The porous polymeric material is formed from a thermoplastic composition containing a continuous phase that includes a matrix polymer. A microinclusion additive and nanoinclusion additive may also be dispersed within the continuous phase in the form of discrete domains, wherein a porous network is defined in the material that includes a plurality of nanopores having an average cross-sectional dimension of about 800 nanometers or less. 139-. (canceled)40. A garment that defines an interior body-facing surface shaped to fit over a portion of a body , wherein the garment includes a porous polymeric material that is formed from a thermoplastic composition containing a continuous phase that includes a matrix polymer , and further wherein a microinclusion additive and nanoinclusion additive are dispersed within the continuous phase in the form of discrete domains , wherein a porous network is defined in the material that includes a plurality of nanopores having an average cross-sectional dimension of about 800 nanometers or less.41. The garment of claim 40 , wherein the polymeric material exhibits a water vapor transmission rate of about 300 g/m-24 hours or more claim 40 , thermal conductivity of from about 0.02 to about 0.10 watts per meter-kelvin claim 40 , and/or hydrohead value of about 50 centimeters or more.42. The garment of claim 40 , wherein the microinclusion additive includes a polyolefin.43. The garment of claim 40 , wherein the nanoinclusion includes a polyepoxide.44. The garment of claim 40 , wherein the microinclusion additive constitutes from about 1 wt. % to about 30 wt. % of the composition claim 40 , based on the weight of the continuous phase.45. The garment of claim 40 , wherein the nanoinclusion additive constitutes from about 0.05 wt. % to about 20 wt. % of the composition claim 40 , based on the weight of the continuous phase.46. The garment of claim 40 , wherein the thermoplastic ...

Polyolefin Film for Use in Packaging

A polyolefin packaging film is provided. The polyolefin film is formed by a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores. 138-. (canceled)39. A film comprising a thermoplastic composition , wherein the composition contains a continuous phase that includes a polyolefin matrix polymer and a nanoinclusion additive dispersed within the continuous phase in the form of discrete domains , wherein a porous network is defined in the composition that includes a plurality of nanopores having an average cross-sectional dimension of about 800 nanometers or less.40. The film of claim 39 , wherein the nanopores have an average cross-sectional dimension of from about 5 to about 700 nanometers.41. The film of claim 39 , wherein the nanopores have an average axial dimension of from about 100 to about 5000 nanometers.42. The film of claim 39 , wherein the polyolefin matrix polymer has a melt flow rate of from about 0.5 to about 80 grams per 10 minutes claim 39 , determined at a load of 2160 grams and at 230° C. in accordance with ASTM D1238.43. The film of claim 39 , wherein the polyolefin matrix polymer is a propylene homopolymer claim 39 , propylene/α-olefin copolymer claim 39 , ethylene/α-olefin copolymer claim 39 , or a combination thereof.44. The film of claim 39 , wherein the polyolefin matrix polymer is a substantially isotactic polypropylene homopolymer or a copolymer containing at least about 90% by weight propylene.45. The film of claim 39 , wherein the continuous phase constitutes from about 60 wt. % to about 99 wt. % of the thermoplastic composition.46. The film of claim 39 , wherein the nanoinclusion additive includes a functionalized polyolefin.47. ...

Polymeric Material for Use in Thermal Insulation

A polymeric material for use in thermal insulation is provided. The polymeric material is formed from a thermoplastic composition containing a continuous phase that includes a matrix polymer and within which a microinclusion additive and nanoinclusion additive are dispersed in the form of discrete domains. A porous network is defined in the material that includes a plurality of nanopores having an average cross-sectional dimension of about 800 nanometers or less. The polymeric material exhibits a thermal conductivity of about 0.20 watts per meter-kelvin or less.

POLYMER FILM, AND DISPERSION LIQUID AND AGGLOMERATE USING SAME

A polymer film has an average film thickness Talong a straight line D passing through the center of gravity of a two-dimensional projection such that the area of the polymer film is maximized, satisfies equation (a), the average value L of distances 1 from the center of gravity to edges satisfies equation (b), the Young's modulus E satisfies equation (c), and the thickness deviation Δ defined by equation (d) satisfies equation (e); and a dispersion liquid and an agglomerate using the same. (a) 10 nm≤T≤1000 nm, (b) 0.1 μm≤L≤500 μm, (c) 0.01 GPa≤E≤4.3 GPa, (d) Δ=1−T/T, (e) 0.346E×10−1.499<Δ<−0.073E×10+0.316. 15-. (canceled)61. A polymer film having an average film thickness Talong a straight line D passing through a center of gravity of a two-dimensional projection such that an area of the polymer film is maximized , satisfies equation (a) , an average value L of distances from the center of gravity to edges in straight lines D passing through a center of gravity satisfies equation (b) , a Young's modulus E satisfies equation (c) , and a thickness deviation A defined by equation (d) satisfies equation (e);{'br': None, 'sub': '0', '(a) 10 nm Подробнее

BIODEGRADABLE POLYMER-BASED BIOCOMPOSITES WITH TAILORED PROPERTIES AND METHOD OF MAKING THOSE

A biodegradable composite including: (a) a polymeric matrix having a biodegradable polymer; (b) a filler; and (c) an anhydride grafted compatibilizer including one or more biodegradable polymers modified with an anhydride group. The composite may also include (d) polymer additives such as polymer chain extenders or plasticizers. An in situ method of manufacturing the biodegradable composite of the present invention, including the steps of: (a) melting one or more biodegradable polymers in the presence of a functional monomer and a free radical initiator to form a mixture; and (b) adding a filler and polymer additives to the mixture thereby manufacturing the biodegradable composite. A method of manufacturing a biodegradable polymer including (a) synthesizing a compatibilizer by (i) mixing a free radical initiator and a functional monomer, (ii) melting one or more biodegradable polymers to form a melt, and (iii) combining the product of step (i) and the melt of step (ii) thereby synthesizing the compatibilizer; and (b) mixing the compatibilizer of step (a), with a matrix of one or more biodegradable polymers and a filler and polymer additives, thereby manufacturing the biodegradable or compostable composite. 1. A biodegradable composite comprising:(a) a polymeric matrix comprising one or more biodegradable polymers;(b) a filler, the filler selected from the group consisting of one or a combination of two or more of the following: (i) a by-product from coffee and/or tea, (ii) a perennial grass and/or agricultural residue, (iii) a co-product of grain-based ethanol industries, and (iv) an inorganic filler; and(c) an anhydride grafted compatibilizer, the anhydride grafted compatibilizer comprising one or more biodegradable polymers modified with an anhydride group, the one or more biodegradable polymers in the compatibilizer being similar to or different from the biodegradable polymers in the polymeric matrix.2. The biodegradable composite of claim 1 , wherein the ...

PACKAGING COMPOSITE MATERIAL COMPRISING POLARIZING FILMS AND PACKAGING COMPRISING SAID MATERIAL

Disclosed in the present invention is a packaging composite material comprising polarizing films, the packaging composite material comprising: a polarizing layer, comprising two or more layers of polarizing film, wherein polarization directions of at least two layers of polarizing film have an included angle which is not 0°. The packaging composite material of the present invention has a simple structure, strong light-blocking properties, a high light-blocking rate, and a broad-spectrum light-blocking effect. Also disclosed in the present invention are the use of the packaging composite material in packaging, and the use of the packaging composite material in a label. When used as packaging or a label, the packaging composite material can extend the shelf life of products which need to be stored in the dark. 1. A packaging composite material comprising polarizing films , wherein it comprises:a polarizing layer, comprising two or more layers of polarizing film;wherein polarization directions of at least two layers of polarizing film have an included angle which is not 0°.2. The packaging composite material as claimed in claim 1 , wherein the packaging composite material further comprises a first surface layer located on one side of the polarizing layer.3. The packaging composite material as claimed in claim 2 , wherein the packaging composite material further comprises a second surface layer located on another side of the polarizing layer.4. The packaging composite material as claimed in claim 3 , wherein a material of the surface layer is selected from one of PE claim 3 , PETG claim 3 , PVC claim 3 , PVA claim 3 , PC claim 3 , PP claim 3 , PS claim 3 , PET claim 3 , PBT claim 3 , EVA claim 3 , EVOH claim 3 , PLA claim 3 , PEF claim 3 , PEN claim 3 , PCTG claim 3 , PBAT claim 3 , PBST claim 3 , PVDC and PA.5. The packaging composite material as claimed in claim 1 , wherein the polarizing layer further comprises a polarizing film bonding layer located between the ...

Low Glass Transition Polyhydroxyalkanoates for Modification of Biodegradable Polymers

Compositions of biobased polymer blends of polymers of polybutylene succinate (PBS) or polybutylene-adipate-terephthalate (PBAT) and a polyhydroxyalkanoate copolymer are described. In certain embodiments, the copolymer is a multiphase copolymer blend having one phase a glass transition temperature of about −5° C. to about −50° C. Methods of making the compositions of the invention are also described. The invention also includes articles, films and laminates comprising the compositions. 1. A branched biodegradable polymer composition comprising a blend of:a. polybutylene succinate (PBS) or polybutylene-adipate-terephthalate (PBAT) and i. 3-hydroxybutyrate; and', 'ii. One or more monomer selected from 4-hydroxybutyrate, 5-hydroxyvalerate, 3-hydroxyhexanoate and 3-hydroxyoctanoate, wherein the one or more monomers about 25% to about 85% of the weight of the PHA polymer;, 'b. a biodegradable polyhydroxyalkanoate (PHA) polymer having a glass transition temperature (Tg) of between about −5° C. and about −50° C. and a molecular weight of between about 450,000 Daltons and about 1,500,000 Daltons, wherein the PHA polymer is a copolymer ofwherein the PHA polymer is between about 3% and about 40% of the weight of the branched biodegradable polymer composition.2. The biodegradable polymer composition of claim 1 , wherein the comonomer in the PHA copolymer is 4-hydroxybutyrate or 5-hydroxyvalerate.3. The biodegradable polymer composition of claim 1 , wherein the comonomer in the PHA copolymer is 4-hydroxybutyrate.4. A branched biodegradable composition comprising a polymer blend of a biobased polymer of polybutylene succinate (PBS) or polybutylene-adipate-terephthalate (PBAT) and a biobased poly-3-hydroxybutyrate-co-4-hydroxybutyrate copolymer having about 25 weight % to about 85 weight % 4-hydroxybutyrate of the copolymer in the composition and a glass transition temperature of about −5° C. to about −50° C. claim 1 , wherein the renewable carbon content of the biodegradable ...

RESIN COMPOSITION INCLUDING POLYALKYLENE CARBONATE

Disclosed herein is a resin composition including polyalkylene carbonate, polylactide and polyalkyl(meth)acrylate, which exhibits excellent biodegradability, mechanical properties, thermal properties and transparency. 2. The resin composition of claim 1 , wherein the resin composition has an elongation of 30 to 250% claim 1 , measured according to ASTM D 882.3. The resin composition of claim 1 , wherein the resin composition has a tensile strength of 100 to 300 kg/cm claim 1 , measured according to ASTM D 882.4. The resin composition of claim 1 , wherein the resin composition comprises: 100 parts by weight of the polyalkylene carbonate; 0.5 to 50 parts by weight of the polylactide; and 0.5 to 35 parts by weight of the polyalkyl(meth)acrylate.5. The resin composition of claim 1 , wherein the polyalkylene carbonate has a weight-average molecular weight of 10 claim 1 ,000 to 1 claim 1 ,000 claim 1 ,000 g/mol.6. The resin composition of claim 1 , wherein the polyalkylene carbonate is at least one selected from the group consisting of polyethylene carbonate claim 1 , polypropylene carbonate claim 1 , polypentene carbonate claim 1 , polyhexene carbonate claim 1 , polyoctene carbonate claim 1 , polycyclohexene carbonate claim 1 , and copolymers thereof.7. The resin composition of claim 1 , wherein the polylactide includes L-lactic acid claim 1 , D-lactic acid claim 1 , L claim 1 , D-lactic acid (racemate) or a mixture thereof.8. The resin composition of claim 7 , wherein the polylactide has a weight-average molecular weight of 100 claim 7 ,000 to 1 claim 7 ,000 claim 7 ,000 g/mol.9. The resin composition of claim 1 , wherein a monomer of the polyalkyl(meth)acrylate is an ester of (meth)acrylic acid and an alkyl group of 1 to 20 carbon atoms.10. The resin composition of claim 1 , further comprising at least one additive selected from the group consisting of a pigment claim 1 , a dye claim 1 , carbon black claim 1 , titanium oxide claim 1 , talc claim 1 , calcium carbonate ...

Biodegradable polyester composition and uses thereof

The present invention relates to plastic composition comprising at least one polyester, biological entities having a polyester-degrading activity and at least an anti-acid filler, wherein the biological entities represent less than 11% by weight, based on the total weight of the plastic composition, and uses thereof for manufacturing biodegradable plastic articles.

BIODEGRADABLE FILMS OBTAINED FROM CASSAVA STARCH AND THEIR MANUFACTURE PROCESS

The present invention is related to the elaboration of flexible films from cassaya starch for the manufacture of biodegradable packaging useful in the packing and packaging of dry foods and other products. The novel films of the invention are produced by extrusion of a mixture of cassaya starch and plasticizer. 1. A process for the production through extrusion of flexible biodegradable films , comprising the stages of:{'i': 'Bacillus amyloliquefasciens.', '(a) Milling and sieving in 50/bottom mesh the native or hydrolyzed cassaya starch with α-amylase obtained from'}(b) Mixing the starch with glycerol as plasticizer agent and storing for 12-36 h at a temperature between 15 and 25° C.(c) Obtaining the [T1] thermoplastic starch (TPS) rod through extrusion of the mixture at a screw rate of 40 to 60 rpm with a temperature profile of 90-110/95-115/100-120/89-109° C.(d) Drying the TPS at a temperature between 40 and 50° C. during 12 to 36 h to obtain the TPS pellets.(e) Mixing PLA and PCL in the presence of maleic anhydride and benzoyl peroxide.(f) Obtaining the pellets from the binary blend [T2] through extrusion at a screw rate of 40 to 60 rpm with a temperature profile of 120-140/140-160/160-180/150-170° C.(g) Obtaining the flexible film through extrusion from the mixture of the TPS pellets and the binary blend at a screw rate of 40 to 60 rpm with a temperature profile of 110-130/125-145/155-175/135-155° C.[T1] rod[T2] binary blend2. Flexible films obtained through the procedure from comprising: native or hydrolyzed cassaya starch treated with a plasticizer agent claim 1 , polylactic acid claim 1 , polycaprolactone claim 1 , maleic anhydride claim 1 , and benzoyl peroxide.3. Sheets and biodegradable packaging obtained by employing the flexible films from comprising: native or hydrolyzed cassaya starch treated with a plasticizer agent claim 2 , polylactic acid claim 2 , polycaprolactone claim 2 , maleic anhydride claim 2 , and benzoyl peroxide. The present invention is ...

SOFT THERMOPLASTIC RESIN COMPOSITION

A soft thermoplastic resin composition comprising: 100 parts by weight of a resin component (A) containing 65 to 85 parts by weight of a vinyl chloride resin having a degree of polymerization of 2000 or less, and 15 to 35 parts by weight of a polyhydroxyalkanoate; 0.1 to 8 parts by weight of a resin component (B) which is one or more resins selected from the group consisting of a (meth)acrylate resin and an acrylonitrile-styrene resin, and has a weight average molecular weight, in terms of the polystyrene, of 400,000 or more; and 12 to 22 parts by weight of a plasticizer. 1. A soft thermoplastic resin composition comprising:100 parts by weight of a resin component (A) containing 65 to 85 parts by weight of a vinyl chloride resin having a degree of polymerization of 2000 or less and 15 to 35 parts by weight of a polyhydroxyalkanoate;0.1 to 8 parts by weight of a resin component (B) which is one or more resins selected from the group consisting of a (meth)acrylate resin and an acrylonitrile-styrene resin, and has a weight average molecular weight, in terms of the polystyrene, of 400,000 or more; and12 to 22 parts by weight of a plasticizer.2. The soft thermoplastic resin composition according to claim 1 , wherein the polyhydroxyalkanoate is a copolymer formed of monomer units derived from two or more hydroxyalkanoates.3. The soft thermoplastic resin composition according to claim 2 , wherein the copolymer comprises monomer units derived from 3-hydroxybutyrate claim 2 , and monomer units derived from hydroxyalkanoate other than 3-hydroxybutyrate.4. The soft thermoplastic resin composition according to claim 3 , wherein the hydroxyalkanoate other than 3-hydroxybutyrate is at least one member selected from the group consisting of 4-hydroxybutyrate claim 3 , 3 -hydroxyvalerate claim 3 , 3-hydroxyhexanoate claim 3 , 3-hydroxyoctanoate claim 3 , and 3-hydroxydecanoate.5. The soft thermoplastic resin composition according to claim 3 , wherein the copolymer contains 50 to 95% ...

BIODEGRADABLE SHEET

Disclosed is a biodegradable sheet comprising at least one layer which is a direct contact layer, intended to successfully contact materials, such as liquids, while maintaining the mechanical properties of the sheet and to extend the biodegradable sheet shelf life. The direct contact layer may comprise a hydrophobic polymer selected from poly(epsilon-caprolactone) (PCL) polyhydroxybutyrate (PHB), Polydioxanone (PDO) polyglycolic acid (PGA), polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), poly lactic acid (PLA), polybutylene adipate terphtalate (PBAT), polyhydroxyalkanoates (PHA), such as polyhydroxybutyrates (PHB), polyhydroxyvalerates (PHV), and polyhydroxybutyrate-hydroxyvalerate copolymers (PHBV) or any mixture thereof. The biodegradable sheet may further comprise surface treated nanoclay particles, PVOH grafted with a crosslinker and PBS or PBSA The biodegradable sheet may further include at least one metalized, biodegradable, laminate layer. 1. A biodegradable sheet , having at least one layer , wherein the layer comprises a first hydrophobic polymer selected from the group consisting of poly(epsilon-caprolactone) (PCL) , a polyhydroxyalkanoate (PHA) and a mixture thereof , and a second hydrophobic polymer selected from the group consisting of polybutylene succinate (PBS) , polybutylene succinate adipate (PBSA) , poly lactic acid (PLA) , polybutylene adipate terephthalate (PBAT) , polydioxanone (PDO) , polyglycolic acid (PGA) and any mixture thereof ,wherein the first hydrophobic polymer is present in said at least one layer in an amount of about 20% w/w.2. The biodegradable sheet according to claim 1 , wherein the first hydrophobic polymer is PCL.3. The biodegradable sheet of claim 1 , wherein the second hydrophobic polymer is selected from the group consisting of PLA claim 1 , PBS claim 1 , PBSA and PBAT.4. The biodegradable sheet of claim 1 , wherein the second hydrophobic polymer is a mixture of PBS and PBSA claim 1 , a mixture of PBS ...

METHOD FOR PREPARING THERMOPLASTIC STARCH BY IN-SITU REACTIVE EXTRUSION PLASTICIZATION PROCESS AND METHOD FOR PREPARING STARCH/POLYMER BLEND BY IN-SITU REACTIVE EXTRUSION PLASTICIZATION AND COMPATIBILIZATION PROCESS

A method of producing a thermoplastic starch by an in-situ reactive extrusion plasticization process and a method for preparing a starch/polymer blend by an in-situ reactive extrusion plasticization and compatibilization process. In the method, a plasticizer reaction precursor (or a plasticizing compatibilizer reaction precursor) is mixed with starch to adhere to the surface of the starch or enter the starch to break the intermolecular and intramolecular hydrogen bonds of the starch. Then a mixture of the plasticizer reaction precursor (or the plasticizing compatibilizer reaction precursor) and starch is subjected to extrusion to produce the thermoplastic starch (or the starch/polymer blend), where the reaction precursor undergoes an in-situ reaction on the surfaces of the starch and in the starch to form a macro-molecular plasticizer (or a plasticizing compatibilizer) to plasticize starch or provide plasticizing and compatibilizing effect on the starch/polymer blend. 1. A method for preparing a thermoplastic starch by an in-situ reactive extrusion plasticization process , comprising:{'b': '1', '(S) mixing a plasticizer reaction precursor with starch to allow the plasticizer reaction precursor to adhere to a surface of starch granules or to enter into the starch granules to break interchain and intrachain hydrogen bonds of the starch; and'}{'b': '2', '(S) subjecting a mixture of the plasticizer reaction precursor and the starch to extrusion in a screw extruder to produce the thermoplastic starch; wherein during the extrusion, the plasticizer reaction precursor undergoes an in-situ reaction on the surface of the starch granules and inside the starch granules to form a plasticizer; and an active group on a macro-molecular chain of the plasticizer is capable of interacting with an active functional group on a macro-molecular chain of the starch such that a starch-starch interaction is replaced by a starch-plasticizer interaction, accompanied by partial depolymerization ...

REINFORCED THERMOPLASTIC POLYOLEFIN ELASTOMER FILM

A thermoplastic polyolefin elastomer film includes a continuous phase that includes a thermoplastic polyolefin elastomer and a nanoinclusion additive dispersed within the continuous phase in the form of discrete domains, wherein each discrete domain is elongated with a long axis, wherein the axes are aligned in the machine direction (MD) when the film is relaxed, and wherein the axes are aligned in the cross direction (CD) when the film is stretched in the CD. Also, an article includes the thermoplastic polyolefin elastomer film. 1. A thermoplastic polyolefin elastomer film comprising: a continuous phase that includes a thermoplastic polyolefin elastomer and a nanoinclusion additive dispersed within the continuous phase in the form of discrete domains , wherein each discrete domain is elongated with a long axis , wherein the axes are aligned in a machine direction (MD) when the film is relaxed , and wherein the axes are aligned in a cross direction (CD) when the film is stretched in the CD.2. The film of claim 1 , wherein the nanoinclusion additive includes a plurality of nanoinclusions having an average cross-sectional dimension of about 800 nanometers or less.3. The film of claim 1 , wherein the polyolefinic elastomer is a polypropylene elastomer.4. The film of claim 1 , wherein the nanoinclusion additive is a terpolymer of ethylene claim 1 , acrylic ester claim 1 , and glycidyl methacrylate.5. The film of claim 1 , wherein the nanoinclusion additive constitutes from about 0.05 wt. % to about 20 wt. % of the film claim 1 , based on the weight of the continuous phase.6. The film of claim 1 , further comprising a microinclusion additive dispersed within the continuous phase in the form of discrete domains.7. The film of claim 6 , wherein the microinclusion additive is a polymer.8. The film of claim 7 , wherein the polymer of the microinclusion additive is a styrenic copolymer claim 7 , functionalized polyolefin claim 7 , or polyester.9. The film of claim 7 , wherein ...

MULTILAYER BIODEGRADABLE FILM

This invention relates to a multilayer biodegradable film which is particularly suitable for the manufacture of packaging and is also characterised by appreciable optical transparency properties in addition to high level mechanical properties. 1. A multilayer film comprising at least one first layer A and at least one second layer B , in which layers A and B have a mutual A/B/A arrangement , wherein the layer A and layer B are different from each other , in which layer A comprises an aliphatic and/or aliphatic-aromatic biodegradable polyester or a polyvinyl alcohol or copolymers thereof and in which layer B comprises: [ a1) 35-70% by moles of units deriving from at least one aromatic dicarboxylic acid,', 'a2) 65-30% by moles of units deriving from at least one saturated aliphatic dicarboxylic acid, and', 'a3) 0-5% by moles of units deriving from at least one unsaturated aliphatic dicarboxylic acid; and, 'a) a dicarboxylic component containing with respect to the total dicarboxylic component, b1) 95-100% by moles of units deriving from at least one saturated aliphatic diol, and', '2) 0-5% by moles of units deriving from at least one unsaturated aliphatic diol;, 'b) a diol component comprising with respect to the total diol component], 'i)30-95% by weight, with respect to the sum of components i-v, of at least one polyester comprisingii) 0.1-50% by weight, with respect to the sum of components i-v, of at least one polymer of natural origin;iii) 1-40% by weight, with respect to the sum of components i-v, of at least one polyhydroxy alkanoate;iv) 0-15% by weight, with respect to the sum of components i-v, of at least one inorganic filler; andv) 0-5% by weight, with respect to the sum of components i.-v., of at least one cross-linking agent and/or chain extender comprising at least one compound having two and/or multiple functional groups including isocyanate, peroxide, carbodiimide, isocyanurate, oxazoline, epoxide, anhydride divinylether groups and mixtures thereof.2. ...

Mechanically Strong Absorbable Polymeric Blend Compositions of Precisely Controllable Absorption Rates, Processing Methods, and Products Therefrom

Novel absorbable polymer blends are disclosed. The blends are useful for manufacturing medical devices having engineered degradation and breaking strength retention in vivo. The blends consist of a first absorbable polymeric component and a second absorbable polymeric component. The weight average molecular weight of the first polymeric component is higher than the weight average molecular weight of the second polymeric component. At least at least one of said components is at least partially end-capped by a carboxylic acid group. Further aspects are medical devices made therefrom. 165-. (canceled)66. A method of manufacturing an implantable medical device , the method comprising the steps of:providing an absorbable polymer blend, the polymer blend comprising:a mixture of a first polymeric component and a second polymeric component,wherein the first polymeric component has a weight average molecular weight higher than the weight average molecular weight of the second polymeric component, andwherein at least one of said components is at least partially end-capped by a carboxylic acid group;dry blending the first and second polymeric components to obtain a substantially homogeneous mixture; and,processing said homogeneous mixture into a medical device.67. The method of claim 66 , wherein said processing comprises a process selected from the group consisting of injection molding claim 66 , melt extrusion claim 66 , blow molding claim 66 , solution spinning claim 66 , spun bonding claim 66 , melt blowing claim 66 , and combinations thereof.68133-. (canceled)134. A method of manufacturing an implantable medical device claim 66 , the method comprising the steps of:providing an absorbable polymer blend, the polymer blend comprising:a mixture of a polymer and an oligomer, wherein the polymer has a weight average molecular weight higher than the weight average molecular weight of the oligomer, and wherein at least one of said polymer or oligomer is at least partially end- ...

BIODEGRADABLE SHEET AND AN ARRAY OF SEPARABLE POUCHES FOR LIQUIDS

Disclosed is a biodegradable sheet prepared from biodegradable material, a process for preparing the biodegradable sheet and uses thereof. One of the disclosed uses of the biodegradable sheet is in the preparation of a flexible liquid receptacle. Disclosed also is a flexible liquid receptacle arranged as an array of several receptacle units that are attached to one another and that may be detached from one another by tearing along a perforated line created between each two receptacle units. The disclosed array may also include a hanger, thus allowing the array to be hung from any appropriate means. Further disclosed is a biodegradable sheet including at least one layer comprising about 15-25% w/w PLA and about 75-85% w/w PBSA. 1. A biodegradable polymeric sheet including at least one layer comprising about 15-25% w/w PLA and about 75-85% w/w PBSA.2. The biodegradable polymeric sheet according to claim 1 , including at least one layer comprising about 15% w/w PLA and about 85% w/w PBSA.3. The biodegradable polymeric sheet according to claim 1 , including at least one layer comprising about 20% w/w PLA and about 80% w/w PBSA.4. The biodegradable polymeric sheet according to claim 1 , including at least one layer comprising about 25% w/w PLA and about 75% w/w PBSA.5. The biodegradable polymeric sheet according to claim 1 , wherein the sheet is a single layer sheet.6. The biodegradable polymeric sheet according to claim 1 , wherein the sheet is a multilayer sheet claim 1 , including at least one layer comprising about 15-25% w/w PLA and about 75-85% w/w PBSA.7. The biodegradable polymeric sheet according to claim 6 , including at least one layer comprising about 15% w/w PLA and about 85% w/w PBSA.8. The biodegradable polymeric sheet according to claim 6 , including at least one layer comprising about 20% w/w PLA and about 80% w/w PBSA.9. The biodegradable polymeric sheet according to claim 6 , including at least one layer comprising about 25% w/w PLA and about 75% w/w ...

SOFT THERMOPLASTIC RESIN COMPOSITION

A soft thermoplastic resin composition comprising: 1: A soft thermoplastic resin composition comprising:100 parts by weight of a resin component (A) containing 15 to 65 parts by weight of a vinyl chloride resin having a degree of polymerization of 2000 or less, and 35 to 85 parts by weight of a polyhydroxyalkanoate; and0.1 to 8 parts by weight of a resin component (B) which is one or more resins selected from the group consisting of a (meth)acrylate resin and an acrylonitrile-styrene resin, and has a weight average molecular weight, in terms of the polystyrene, of 400,000 or more.2. The soft thermoplastic resin composition according to claim 1 , wherein the polyhydroxyalkanoate is a copolymer formed of monomer units derived from two or more kinds of hydroxyalkanoates.3. The soft thermoplastic resin composition according to claim 2 , wherein the copolymer comprises monomer units derived from 3-hydroxybutyrate claim 2 , and monomer units derived from hydroxyalkanoate other than 3-hydroxybutyrate.4. The soft thermoplastic resin composition according to claim 3 , wherein the hydroxyalkanoate other than 3-hydroxybutyrate is at least one member selected from the group consisting of 4-hydroxybutyrate claim 3 , 3-hydroxyvalerate claim 3 , 3-hydroxyhexanoate claim 3 , 3-hydroxyoctanoate claim 3 , and 3-hydroxydecanoate.5. The soft thermoplastic resin composition according to claim 3 , wherein the copolymer contains 50 to 95% by mole of monomer units derived from the 3-hydroxybutyrate.6. The soft thermoplastic resin composition according to claim 1 , wherein the resin component (B) has a number average primary particle size of 40 μm or less.7. The soft thermoplastic resin composition according to claim 1 , wherein a molded article therefrom having a thickness of 1 mm has an HAZE of 50% or less.8. A molded article comprising the soft thermoplastic resin composition according to .9. A film or sheet comprising the molded article according to . The present invention relates to a ...

OPTICAL ARTICLE COMPRISING A HARD COAT, AND PRODUCTION METHOD

A sol-gel composition for acrylic polymers-based substrate including at least a silane hydrolysate and at least an adhesion promoter including a dendritic polymer having hydroxyl and alkoxysilane groups at terminal ends thereof. An optical article coated with said sol-gel composition. 110-. (canceled)11. A sol-gel composition forming upon cure a coating for (meth)acrylic polymers-based substrate , comprising:at least a silane hydrolysate and at least an adhesion promoter, wherein said adhesion promoter comprises a dendritic polymer having hydroxyl and alkoxysilane groups at terminal ends thereof.12. The sol-gel composition of claim 11 , wherein said alkoxysilane groups at terminal ends of the dendritic polymer are obtained by grafting on the dendritic polymers with a coupling agent selected from alkoxysilanes having at least one functional group selected from isocyanate claim 11 , carboxylic acid and carboxylic acid derivatives claim 11 , and mixtures thereof.13. The sol-gel composition of claim 11 , wherein the dendritic polymer is a hyperbranched polymer or a dendrimer having a degree of functionality in hydroxyl and alkoxysilane of from 5 to 60.14. The sol-gel composition of claim 11 , wherein the dendritic polymer has a number average molar mass ranging from 1000 to 15000 g/mol claim 11 , and a functionalization ratio hydroxyl/alkoxysilane ranging from 0.4 to 2.5.16. The sol-gel composition of claim 11 , further comprising from 2 to 10% by weight of said adhesion promoter relative to the total weight of the hard coat coating composition.17. An optical article having at least one surface comprising a coating obtained by directly depositing the sol-gel composition of on substrate claim 11 , then curing said sol-gel composition.18. The optical article of claim 17 , wherein the substrate is a (meth)acrylic substrate with a refractive index ranging from 1.55 to 1.65 claim 17 , preferably of 1.60.19. A process of preparation of an optical article as defined in claim ...

THERMOPLASTIC RESIN COMPOSITION, MOLDED ARTICLE MADE THEREFROM, AND METHOD OF PREPARING THE COMPOSITION

A thermoplastic resin composition including a polylactic acid, a thermoplastic polymer having a lower glass transition temperature than the polylactic acid, a nucleating agent, and a reactive plasticizer, a molded article made therefrom, and a method of preparing the thermoplastic resin composition. 1. A thermoplastic resin composition comprising:a polylactic acid;a thermoplastic polymer having a lower glass transition temperature than the polylactic acid;a nucleating agent; anda reactive plasticizer.2. The thermoplastic resin composition of claim 1 , wherein the thermoplastic polymer comprises an olefin-based thermoplastic polymer.3. The thermoplastic resin composition of claim 1 , wherein the thermoplastic polymer is an ethylene vinyl acetate copolymer; an ethylene (meth)acrylate ester copolymer; or an olefin-based polymer which includes at least one functional group selected from the group consisting of an acid anhydride group claim 1 , a carboxyl group claim 1 , an amino group claim 1 , an imino group claim 1 , an alkoxysilyl group claim 1 , a silanol group claim 1 , a silyl ether group claim 1 , a hydroxyl group claim 1 , and an epoxy group; or a combination thereof.4. The thermoplastic resin composition of claim 1 , wherein the thermoplastic polymer is an ethylene vinyl acetate copolymer which comprises about 60 wt % to about 90 wt % of an ethylene-based structural unit and about 10 wt % to about 40 wt % of a vinyl-acetate based structural unit.5. The thermoplastic resin composition of claim 1 , wherein the thermoplastic polymer is about 3 wt % to about 20 wt % of the total weight of the thermoplastic resin composition.6. The thermoplastic resin composition of claim 1 , wherein the nucleating agent is an inorganic nucleating agent claim 1 , an organic nucleating agent claim 1 , or a combination thereof.7. The thermoplastic resin composition of claim 6 , wherein the nucleating agent is an inorganic nucleating agent claim 6 , and the inorganic nucleating agent ...

BIODEGRADABLE POLYESTER COMPOSITION

A biodegradable polyester composition based on a total weight of the biodegradable polyester composition, including a weight content of tetrahydrofuran, which is 3 ppm-200 ppm; and based on the total weight of the biodegradable polyester composition, a weight content of cyclopentanone is 0.5 ppm-85 ppm is provided. The tetrahydrofuran and cyclopentanone is added into the composition and controlling the content of tetrahydrofuran and the content of cyclopentanone in a certain range in the composition to realize printing performance. Moreover, when a velocity of film blowing is 176 Kg/h, a range of a film thickness is less than 0.2 μm and a relative deviation of the film thickness is less than 1%. 1. A biodegradable polyester composition , comprising following components in parts by weight:i) 60 to 100 parts of biodegradable aliphatic-aromatic polyester;ii) 0 to 40 parts of polylactic acid;iii) 0 to 35 parts of an organic filler and/or an inorganic filler;iv) 0 to 1 part of a copolymer which contains epoxy group and is based on styrene, acrylate and/or methacrylate;wherein, based on a total weight of the biodegradable polyester composition, a weight content of tetrahydrofuran is 3 ppm-200 ppm;and based on the total weight of the biodegradable polyester composition, a weight content of cyclopentanone is 0.5 ppm-85 ppm.2. The biodegradable polyester composition according to claim 1 , wherein based on the total weight of the biodegradable polyester composition claim 1 , the weight content of tetrahydrofuran is 8 ppm-100 ppm claim 1 , preferably 15 ppm-75 ppm; and the weight content of cyclopentanone is 5 ppm-50 ppm claim 1 , preferably 10 ppm-35 ppm.3. The biodegradable polyester composition according to claim 1 , wherein the following components in parts by weight:i) 65 to 95 parts of the biodegradable aliphatic-aromatic polyester;ii) 5 to 35 parts of the polylactic acid;iii) 5 to 25 parts of the organic filler and/or the inorganic filler;iv) 0.02 to 0.5 part of the ...

CURED-FILM FORMATION COMPOSITION, ORIENTATION MATERIAL, AND RETARDATION MATERIAL

A cured-film formation composition for forming a cured film having photoreaction efficiency and solvent resistance, and high adhesiveness alignment uniformity, and an orientation material for photo-alignment, and a retardation material formed by use of the orientation material. A cured-film formation composition includes (A) a compound having a photo-aligning group and one substituent selected from a hydroxy group, a carboxy group, and an amino group; (B) a hydrophilic polymer having one or more substituents selected from a hydroxy group, a carboxy group, and an amino group; and (C) a polymer obtained by polymerizing a monomer including an N-hydroxymethyl compound or an N-alkoxymethyl (meth)acrylamide compound, and optionally further a cross-linking catalyst as a component (D). By use of the composition, a cured-film is formed and an orientation material is formed by utilizing photo-alignment technique. A retardation material is obtained by applying a polymerizable liquid crystal on the orientation material and curing it. 1. A cured-film formation composition comprising:(A) a compound having a photo-aligning group and one substituent selected from a hydroxy group, a carboxy group, and an amino group;(B) a hydrophilic polymer having one or more substituents selected from a hydroxy group, a carboxy group, and an amino group; and(C) a polymer obtained by polymerizing a monomer including an N-hydroxymethyl compound or an N-alkoxymethyl(meth)acrylamide compound.2. The cured-film formation composition according to claim 1 , whereinthe photo-aligning group of the component (A) is a functional group having a structure to be photodimerized or photoisomerized.3. The cured-film formation composition according to claim 1 , whereinthe photo-aligning group of the component (A) is a cinnamoyl group.4. The cured-film formation composition according to claim 1 , whereinthe photo-aligning group of the component (A) is a group of an azobenzene structure.5. The cured-film formation ...

Surface-functionalised polymeric object and method of its production

The invention provides a surface-functionalised polymeric object (), comprising: a bulk material () comprising a copolymer containing constitution units derived from a first comonomer and constitution units derived from a second comonomer, the first comonomer being selected from L-lactide and D-lactide and forming sequences of oligo(L-lactide) or oligo(D-lactide) in the copolymer the copolymer having a substantially random, partially blocky structure with a dyad ratio of (lactide-lactide)-dyads to (lactide-second comonomer)-dyads of at least 2.0:1; and a surface layer () disposed on a surface of the bulk material (), the surface layer () comprising a functionalising species and at least one chain of poly(D-lactide) or of poly(L-lactide) covalently bound to the functionalising species, and at least one chain being different from the oligo(L-lactide) sequences or oligo(D-lactide) sequences contained in the copolymer; wherein the surface layer () is attached to the bulk material () via stereocomplexes formed between the poly(D-lactide) chain(s) of the functionalising species and the oligo(L-lactide) sequences contained in the copolymer or via stereocomplexes formed between the poly(L-lactide) chain(s) of the functionalising species and the oligo(D-lactide) sequences contained in the copolymer, respectively. The surface-functionalised polymeric object can be produced in a one-step procedure by coaxial electrospinning. 110. A surface-functionalised polymeric object () , comprising:{'b': '11', 'a bulk material () comprising a copolymer containing constitution units derived from a first comonomer and constitution units derived from a second comonomer, the first comonomer being selected from L-lactide and D-lactide and forming sequences of oligo(L-lactide) or oligo(D-lactide) in the copolymer, the copolymer having a substantially random, partially blocky structure with a dyad ratio of (lactide-lactide)-dyads to (lactide-second comonomer)-dyads of at least 2.0:1; and'}{'b': ...

LIGHT-BLOCKING ARTICLES WITH SPACER FUNCTIONAL COMPOSITION

A foamed, opacifying element useful as a light-blocking article has a substrate; an opacifying layer disposed on the substrate, and a functional composition disposed over the opacifying layer. The functional composition comprises: (i) glass particles such as hollow glass particles. The presence of the glass particles provides additional heat absorption for the foamed, opacifying elements that can be formed into light-blocking materials. 1. A foamed , opacifying element comprising:a substrate having a first opposing surface and a second opposing surface;an opacifying layer disposed on the first opposing surface of the substrate, anda functional composition disposed over the opacifying layer, the functional composition comprising (i) glass particles;wherein the opacifying layer comprises:(a) at least 0.1 weight % and up to and including 40 weight % of porous particles, each porous particle comprising a continuous polymeric phase and discrete pores dispersed within the continuous polymeric phase, the porous particles having a mode particle size of at least 2 μm and up to and including 50 μm;{'sub': 'g', '(b′) at least 10 weight % and up to and including 80 weight % of a matrix material that is derived from a (b) binder material having a glass transition temperature (T) of less than 25° C.;'}(c) at least 0.0001 weight % and up to and including 50 weight % of one or more additives selected from the group consisting of dispersants, foaming agents, foam stabilizing agents, plasticizers, flame retardants, optical brighteners, thickeners, biocides, tinting colorants, metal particles, and inert inorganic or organic fillers;(d) less than 5 weight % of water; and(e) at least 0.002 weight % of an opacifying colorant different from all of the one or more additives of (c), which opacifying colorant absorbs electromagnetic radiation having a wavelength of at least 380 nm and up to and including 800 nm,all amounts being based on the total weight of the opacifying layer.2. The foamed ...

METHOD FOR MANUFACTURING A POROUS FILM AND POROUS FILM AND USE THEREOF

The present disclosure provides a method for manufacturing a porous film, including: preparing a polymer mixture solution, wherein the polymer mixture solution includes polycaprolactone and at least one hydrophobic polymer; adding solid particles as a dispersing agent to the polymer mixture solution and mixing the solid particles with the polymer mixture solution, wherein the amount of solid particles added is enough to convert the polymer mixture solution into a solid mixture; drying the solid mixture to form a film; and washing the film with a washing fluid to remove the solid particles from the film to form the porous film, wherein the weight ratio of the polycaprolactone to the at least one hydrophobic polymer is about 1:0.1-10, and wherein the weight ratio of the polycaprolactone and the at least one hydrophobic polymer to the solid particles is about 1:0.01-250. 1. A method for manufacturing a porous film , comprising: polycaprolactone (PCL); and', 'at least one hydrophobic polymer, which is selected from a group consisting of polylactic acid (PLA), poly(lactic-co-glycolic acid (PLGA), poly(glycolic acid) (PGA), polyhydroxybutyrate (PHB), polydioxanone (PDS), poly(propylene fumarate) (PPF), polyanhydrides, polyacetals, poly(ortho esters), polycarbonates, polyurethanes, polyphosphazenes and polyphosphoester, wherein the molecular weight of the at least one hydrophobic polymer is about 10K-800K;, 'preparing a polymer mixture solution, wherein the polymer mixture solution comprisesadding solid particles as a dispersing agent to the polymer mixture solution and mixing the solid particles with the polymer mixture solution, wherein the amount of solid particles added is enough to convert the polymer mixture solution into a solid mixture, wherein the particle size of the solid particles is about 50-250 μm;drying the solid mixture to form a film; and 'wherein the weight ratio of the polycaprolactone to the at least one hydrophobic polymer is about 1:0.1-10, and ...

METHODS OF MAKING POLYTETRAFLUOROETHYLENE/POLYMER COMPOSITES AND USES THEREOF

Methods of making polytetrafluoroethylene (PTFE)/polymer composites are disclosed herein. The products can be used in the field of bio- and medical applications, such as for use in artificial blood vessels, vascular grafts, cardiovascular and soft tissue patches, facial implants, surgical sutures, and endovascular prosthesis, and for any products known in the aerospace, electronics, fabrics, filtration, industrial and sealant arts. 1. A process for preparing a polytetrafluoroethylene (PTFE)/polymer composite product , the process comprising: dissolving a polymer with a solvent to form a polymer solution; immersing a PTFE material into the polymer solution; and extruding the PTFE/polymer blend.2. The process as set forth in claim 1 , wherein the solvent is a biocompatible lower alkyl (C-C) alcohol selected from the group consisting of methanol claim 1 , ethanol claim 1 , isopropanol claim 1 , and combinations thereof.3. The process as set forth in claim 1 , wherein the solvent is selected from the group consisting of acetic acid claim 1 , ethyl acetate claim 1 , acetonitrile claim 1 , chloroform claim 1 , benzene claim 1 , methylbenzene claim 1 , dimethylbenzene claim 1 , acetone claim 1 , 2-butanone claim 1 , cyclopentanone claim 1 , pentane claim 1 , n-hexane claim 1 , cyclohexane claim 1 , heptane claim 1 , dichloromethane claim 1 , dichloroethane claim 1 , trichloroethane claim 1 , tetrachloromethane claim 1 , tetrachloroethane claim 1 , trimethylpentane claim 1 , 1 claim 1 ,4-dioxane claim 1 , chloroform claim 1 , ether claim 1 , dimethyl sulfoxide (DMSO) claim 1 , dimethylformamide (DMF) claim 1 , tetrahydrofuran (THF) claim 1 , and combinations thereof.4. The process as set forth in claim 1 , wherein the polymer is selected from the group consisting of polylactic acid (PLA) claim 1 , polycaprolactone (PCL) claim 1 , thermoplastic polyurethane (TPU) claim 1 , polyvinyl alcohol (PVA) claim 1 , poly(ethylene oxide) (PEO) claim 1 , polycarbonate (PC) claim 1 , ...

ALIPHATIC-AROMATIC BIODEGRADABLE POLYESTER

Disclosed are aliphatic-aromatic biodegradable polyesters obtained from aliphatic dicarboxylic acids, polyfunctional aromatic acids of renewable origin and particularly 2,5-furan dicarboxylic acid, and diols. Also disclosed are blends of the polyesters with other biodegradable polymers of either natural or synthetic origin. The polyesters have properties and viscosity values that make them suitable, after adjusting their molecular weight, for use in numerous practical applications such as films, injection molded products, extrusion coatings, fibers, foams, thermoformed products, extruded profiles and sheets, extrusion blow molding, injection blow molding, rotomolding, stretch blow molding.

Improved Monovinlyaromatic Polymer Composition Comprising Biopolymer

The invention relates to compositions comprising a rubber-modified monovinylaromatic polymer comprising 70 wt % or more of a monovinylaromatic polymer matrix, based on the total weight of the rubber-modified monovinylaromatic polymer, and from 0.5 to 20 wt % of at least one rubber, and from 0.1 to 4.8 wt % of at least one biopolymer based on the total weight of the rubber-modified monovinylaromatic polymer wherein at least one biopolymer is selected from poly(α-hydroxyacids) and/or polyhydroxyalkanoates, and any combination thereof; and from 0.1 to 6.0 wt % of a plasticizer being selected from a mineral oil and/or polyisobutene as based on the total weight of the composition. The invention also relates to articles made from these compositions. 115.-. (canceled)16. A composition comprising a rubber-modified monovinylaromatic polymer comprising:70 wt % or more of a monovinylaromatic polymer matrix, based on the total weight of the rubber-modified monovinylaromatic polymer,from 0.5 to 20 wt % of at least one rubber, based on the total weight of the rubber-modified monovinylaromatic polymer, andfrom 0.1 to 4.8 wt % of at least one biopolymer based on the total weight of the rubber-modified monovinylaromatic polymer, wherein the at least one biopolymer is selected from poly(α-hydroxyacids) and/or polyhydroxyalkanoates;with the at least one rubber and the at least one biopolymer being in a dispersed phase within the monovinylaromatic polymer matrix;and further wherein the composition comprises from 0.1 to 6.0 wt % of a plasticizer based on the total weight of the composition, the plasticizer being selected from a mineral oil and/or polyisobutene.17. The composition according to characterized in that the at least one biopolymer is present in an amount of at least 0.3 wt % based on the total weight of the rubber-modified monovinylaromatic polymer; and/or the at least one biopolymer is present in an amount of at most 4.6 wt % based on the total weight of the rubber-modified ...

COMPOSITION BASED ON POLYACTIC ACID

The present invention relates to a composition based on polylactic acid, comprising polylactic acid or a compound derived therefrom, and one or more additives, wherein polymethylmethacrylate is used as at least one additive. The amount of poly-methylmethacrylate is preferably at least 5 wt %, based on the total amount of polylactic acid or a compound derived therefrom, based on weight, in the final composition. 1. A composition based on polylactic acid , comprising polylactic acid or a compound derived therefrom , and one or more additives , characterized in that polymethylmethacrylate is used as at least one additive.2. The composition of claim 1 , characterized in that the amount of polymethylmethacrylate is at least 5 wt % claim 1 , based on the total amount of polylactic acid or a compound derived therefrom claim 1 , based on weight claim 1 , in the final composition.3. The composition of claim 1 , characterized in that the amount of polymethylmethacrylate is at least 10 wt % claim 1 , based on the total amount of polylactic acid or a compound derived therefrom claim 1 , based on weight claim 1 , in the final composition.4. The composition of claim 1 , characterized in that the amount of polymethylmethacrylate is at most 50 wt % claim 1 , based on the total amount of polylactic acid or a compound derived therefrom claim 1 , based on weight claim 1 , in the final composition.5. The composition of claim 1 , characterized in that a polylactic acid with a composition between 95/5 and 100/0 (L-lactide/D-lactide) is used as polylactic acid or a compound derived therefrom.6. The composition of claim 1 , characterized in that the aforementioned composition further contains hydrotalcite.7. The composition of claim 6 , characterized in that the amount of hydrotalcite is at least 0.2 wt % and at most 2.0 wt % claim 6 , based on the weight of the final composition.8. A method for manufacturing a foamed moulded part claim 6 , comprising extrusion of polylactic acid or a ...

ISOCYANATE FREE POLYMERS AND METHODS OF THEIR PRODUCTION

The invention relates to novel methods for producing isocyanate-free synthetic materials, such as plastics, polymers and/or modified polyurethanes, comprising melt extrusion processing of combinations of thermoplastic polyurethane and nanoclays. 1. Method for the isocyanate-free production of a synthetic material product I comprising i. mixing 70-90 wt % of the TPU with 10-30 wt % of the nanoclay component, thereby producing intermediate product Ia, followed by', 'ii. mixing 90-99 wt % of the TPU with 0.1-10 wt % of the intermediate product Ia, thereby producing intermediate product I,, 'a) mixing thermoplastic polyurethane (TPU) and a nanoclay component comprising'}b) mixing 10-90% of the intermediate product I obtained from a) with 8-30 wt % of a polyol component, and optionally additional TPU, thereby producing intermediate product II,c) mixing 50-70 wt % intermediate product II obtained from b) with 20-40 wt % polycarbonate (PC) and/or 6-18 wt % polycaprolactone component (PCL), thereby producing product I,wherein one or more for said mixings in a) to c) occurs in a segmented single, twin or multiple screw melt extruder at melting temperatures between 80 and 300 degrees C.2. The method of claim 1 , wherein product I is subsequently processed to produce product II via extrusion claim 1 , blowing claim 1 , casting claim 1 , grinding and/or spraying claim 1 , to obtain particles claim 1 , granules claim 1 , films claim 1 , fibres claim 1 , foams claim 1 , strands claim 1 , sheets and/or foils.3. The method of claim 1 , wherein the mixing in a) i) occurs at a ratio of 80 wt % TPU and 20 wt % nanoclay component.4. The method of claim 3 , wherein the mixture in a) ii) occurs at a ratio of 97 wt % TPU and 3 wt % intermediate product Ia.5. The method of claim 3 , wherein the mixing in b) of occurs at a ratio of 70-90 wt % claim 3 , preferably 80 wt % absolute TPU (considering the TPU present in the intermediate product I in addition to optionally additionally added TPU) ...

Vinyl Functional Interpenetrating Network Polymers Produced by Physically Mixing Vinyl Functional Resins with Thermoplastic Resin Compositions, Methods of Use and Methods of Preparation

The present disclosure pertains to methods and/or systems for making a SIPN and/or an IPN by physically mixing at least one vinyl functional thermoset with at least one thermoplastic resin. For example, a method of producing a resin composition comprising: mixing at least one vinyl functional thermoset resin with at least one thermoplastic resin wherein: the two resins are sufficiently miscible at a mixing viscosity of at least at least 5,000 cPs measured at the temperature of mixing and the mixing results in sufficient laminar flow such that a substantial portion of the resin mixture forms an IPN and/or a SIPN. The IPNs and/or SPINs formed have one or more superior properties over mixtures of the same resins. 118-. (canceled)19. A method of producing a pseudo interpenetrating network (SIPN) composition or a interpenetrating polymer network (IPN) , comprising:physical alloy mixing of at least one vinyl functional thermoset with at least one thermoplastic resin.20. The method of claim 19 , wherein the two resins are sufficiently miscible when the mixture has a viscosity during mixing of at least 5000 cPs at the temperature of mixing and the two resins are capable of forming a SIPN or an IPN while still in the liquid state.21. The method of claim 19 , wherein the two resins are sufficiently miscible at a mixing viscosity of at least 5 claim 19 ,000 cPs measured at the temperature of mixing and the mixing results in sufficient laminar flow such that a substantial portion of the resin mixture forms an IPN or a SIPN while still in the liquid state.22. The method of claim 19 , wherein the two resins are sufficiently miscible at a mixing viscosity of at least 5 claim 19 ,000 cPs measured at the temperature of mixing and upon sufficient laminar flow mixing the two resins form an IPN or a SIPN resin composition while still in the liquid state that is substantially free of thermoplastic micelles.23. The method of claim 19 , wherein the mixture has a reduced amount of solvent ...

BIODEGRADABLE RESIN COMPOSITION, AND BIODEGRADABLE FILM

There are disclosed a biodegradable resin composition including a starch (a1), a condensation polymer (a2) of an aliphatic diol and an aliphatic dicarboxylic acid, a non-crystalline polylactic acid-based polymer (b) and an aliphatic aromatic polyester (c), a mass ratio (a1/a2) being from 20/80 to 50/50, a mass ratio of a composition (A) comprising the components other than the components (b) and (c) to the component (b) ((A)/(b)) being from 95/5 to 50/50, and a mass ratio {(A)+(b)}/(c) being from 98/2 to 85/15, and a biodegradable film using the biodegradable resin composition. 1. A biodegradable resin composition comprising a starch (a1) , a condensation polymer (a2) of an aliphatic diol and an aliphatic dicarboxylic acid , a non-crystalline polylactic acid-based polymer (b) and an aliphatic aromatic polyester (c) , a mass ratio of the starch (a1) to the condensation polymer (a2) of an aliphatic diol and an aliphatic dicarboxylic acid (a1/a2) being from 20/80 to 50/50 , a mass ratio of a composition (A) comprising the components other than the non-crystalline polylactic acid-based polymer (b) and the aliphatic aromatic polyester (c) to the non-crystalline polylactic acid-based polymer (b) ((A)/(b)) being from 95/5 to 50/50 , and a mass ratio {(A)+(b)}/(c) being from 98/2 to 85/15.3. The biodegradable resin composition according to claim 1 , wherein the condensation polymer (a2) is a condensation polymer of ethylene glycol and/or 1 claim 1 ,4-butanediol claim 1 , and succinic acid and/or adipic acid.4. The biodegradable resin composition according to claim 1 , wherein the non-crystalline polylactic acid-based polymer (b) is a polymer of L-lactic acid and D-lactic acid claim 1 , and a content of the L-lactic acid and a content of the D-lactic acid in the polymer are respectively 94 mol % or less.5. The biodegradable resin composition according to claim 1 , wherein the aliphatic aromatic polyester (c) is a condensation polymer of an aromatic polycarboxylic acid and an ...

ADVANCED MICROFIBERS AND RELATED METHODS

This invention provides a finely ground biomass material used to create biomass-containing plastics having a smooth surface, while also preventing creation of unwanted color including those created by the Maillard reaction which results from a combination of sugars, protein, heat and acid or base chemicals. The present invention also provides for methods to prevent agglomeration of small particles into larger particles which can produce irregular surfaces on biomass-based plastics, including thin film plastics, especially thin film plastics less than 4 mil and other thin film plastics that can become too large to use in thin-film plastic production. For the purpose of this invention, plastic resins can be any gas or liquid hydrocarbon or fermentation-based resins. 1. A method for producing finely ground biomass material , the method comprising the steps of:(a) providing dried biomass material;(b) grinding the dried biomass material using a hammermill equipped with a screen having a hole pattern until all ground dried biomass particles have passed through the screen;(c) grinding the ground dried biomass particles with a grinder until less than a target percentage of the ground dried biomass particles have a particle size greater than a target particle size;(d) disagglomerating the ground dried biomass particles using an air classification system to create and separate fines, fines being particles having a size of less than a target fine size of no more than 16 microns, and oversized particles; and(e) repeating steps (c) and (d) on the remaining oversized particles until at least 50% of the ground dried biomass particles are below the target fine size.2. A method for producing finely ground biomass material , the method comprising the steps of:(a) providing dried biomass material;(b) grinding the dried biomass material using a hammermill equipped with a screen having a hole pattern until the ground dried biomass particles have an average particle size of less than ...

Process For Producing Articles Formed From Polylactic Acid and Articles Made Therefrom

PLA polymers that can be expanded into microporous articles having a node and fibril microstructure are provided. The fibrils contain PLA polymer chains oriented with the fibril axis. Additionally, the PLA polymers have an inherent viscosity greater than about 3.8 dL/g and a calculated molecular weight greater than about 150,000 g/mol. The PLA polymer article may be formed by bulk polymerization where the PLA bulk polymer is made into a preform that is subsequently expanded at temperatures above the glass transition temperature and below the melting point of the PLA polymer. In an alternate embodiment, a PLA polymer powder is lubricated, the lubricated polymer is subjected to pressure and compression to form a preform, and the preform is expanded to form a microporous article. Both the preform and the microporous article are formed at temperatures above the glass transition temperature and below the melting point of the PLA polymer.

BIODEGRABLE CARDSTOCK COMPOSITION

L-Polylactic acid and D-Polylactic acid biodegradable biopolymers are combined with torrefied biomass and a plasticizer to create a biodegradable cardstock composition. The biodegradable cardstock composition provides an alternative to conventional plastic cardstocks, which are manufactured using petroleum-based materials such polyvinyl chloride (PVC) or polystyrene (PS). The biodegradable cardstock described herein can be incorporated into a variety of end products such as key cards, driver licenses, security badges, calling cards, and other plastic cards, including those that have a magnetic strip containing stored data such as credit and debit cards. 1. A biodegradable cardstock composition comprising:a) L-Polylactic acid biodegradable biopolymer;b) D-Polylactic acid biodegradable biopolymer, the D-Polylactic acid forming a stereocomplex with the L-Polylactic acid;c) torrefied biomass; and, 'wherein the L-Polylactic acid, the D-Polylactic acid, the torrefied biomass, and the plasticizer are compounded to create the biodegradable cardstock composition.', 'd) a plasticizer'}2. The composition of claim 1 , wherein the composition is comprised of polyhydroxyalkanoates claim 1 , which include but are not limited to polylactides claim 1 , and polylactic acids.3. The composition of claim 1 , wherein composition has a number average molecular weight of 10 claim 1 ,000 to 500 claim 1 ,000 Daltons claim 1 , preferably between 90 claim 1 ,000 and 200 claim 1 ,000 Daltons.4. The composition of claim 1 , wherein the biodegradable biopolymer comprises 20 to about 80 percent by weight of the composition.5. The composition of claim 1 , wherein D-Polylactic acid will form a stereocomplex when melt blended with L-Polylactic acid matrix.6. The composition of claim 1 , wherein D-Polylactic acid is a polyester comprised of D-lactyl monomeric units.7. The composition of claim 1 , wherein D-Polylactic acid is made through the ring opening polymerization of D-lactide claim 1 , initiated ...

Process for producing foam mouldings

The present invention relates to mouldings and processes for producing the same. In particular, the invention relates to foam mouldings and methods of making the same comprising providing a first amount of expandable foam particles and providing a second amount of expandable foam particles and preparing a physical mixture on the basis of the first and second amount of foam particles and introducing the mixture into a mould and sintering under pressure and heat, for example, where the chemical origin of the first amount of expandable foam particles differs from the chemical origin of the second amount of foam particles, and optionally further comprising the presence of a coating in the mixture before the introduction of the mixture into the mould. 1. A process for producing foam moldings , comprisinga) providing a first amount of expandable foam particles;b) providing a second amount of expandable foam particles;c) preparing a physical mixture on basis of said first and second amount of foam particles;d) introduction of the mixture of step c) into a mold and sintering under pressure and heat, wherein the chemical origin of the first amount of expandable foam particles differs from the chemical origin of the second amount of foam particles, said process further comprising the presence of a coating in said mixture before said introduction of said mixture into said mold.2. A process according to claim 1 , wherein said first amount of expandable foam particles is provided with said coating.3. A process according to claim 1 , wherein said second amount of expandable foam particles is provided with said coating.4. A process according to claim 1 , wherein said physical mixture on basis of said first and second amount of expandable foam particles is provided with said coating.5. A process according to claim 1 , wherein in step d) hot air is injected into the mold.6. A process according to claim 1 , wherein in step d) steam is injected into the mold.7. A process according to ...

FLEXIBLE PREPREG AND USES THEREOF

A prepreg is provided. The prepreg is prepared by impregnating a liquid crystal polymer non-woven fabric with a thermal-curable resin composition or by coating a thermal-curable resin composition onto a liquid crystal polymer non-woven fabric and drying the impregnated or coated liquid crystal polymer non-woven fabric, wherein the thermal-curable resin composition includes: 2. The prepreg of claim 1 , wherein the weight ratio of the cyclic olefin copolymer (B) to the unsaturated monomer (A) is 0.6 to 2.4.3. The prepreg of claim 1 , wherein the unsaturated monomer (A) is selected from the group consisting of an alkenyl-containing aromatic monomer claim 1 , an allyl-containing monomer claim 1 , an acryloyl-containing monomer claim 1 , a vinyl ether claim 1 , a maleimide claim 1 , and combinations thereof.4. The prepreg of claim 3 , wherein the allyl-containing monomer is an organic compound comprising at least one allyl.5. The prepreg of claim 4 , wherein the allyl-containing monomer is selected from the group consisting of diallyl phthalate claim 4 , diallyl isophthalate claim 4 , triallyl mellitate claim 4 , triallyl mesate claim 4 , triallyl benzene claim 4 , triallyl cyanurate claim 4 , triallyl isocyanurate claim 4 , triallyl amine claim 4 , and combinations thereof.6. The prepreg of claim 1 , wherein le is H or a Cto Calkyl.8. The prepreg of claim 1 , wherein claim 1 , based on the total moles of the repeating units (B-1) claim 1 , (B-2) and (B-3) claim 1 , the content of the repeating unit (B-2) is 20 mol % to 33 mol %.9. The prepreg of claim 1 , wherein the thermal-curable resin composition further comprises a flame retardant claim 1 , a catalyst claim 1 , a filler claim 1 , a curing accelerator claim 1 , a dispersing agent claim 1 , a toughener claim 1 , a viscosity modifier claim 1 , a thixotropic agent claim 1 , a defoamer claim 1 , a leveling agent claim 1 , a surface treatment agent claim 1 , a stabilizing agent claim 1 , an antioxidant claim 1 , or ...

TRIPLE SHAPE MEMORY COMPOSITE FOAMS

A triple shape memory polymeric foam that is open cell in nature and features a two phase, crosslinked SMP with a glass transition temperature of one phase at a temperature lower than a melting transition of the second phase. The resulting soft material features high fidelity, repeatable triple shape behavior, and is useful for complex deployment using a combination of foam compression and bending. 1. A triple shape memory polymer , comprising a foam having an epoxy phase with a glass transition temperature and a thermoplastic phase having a melting temperature that are intermixed to form a continuous phase , wherein the continuous phase defines walls having a thickness of between 1 and 100 micrometers and pores having a diameter of between 100 and 1000 micrometers.2. The polymer of claim 1 , wherein the glass transition temperature of the epoxy phase is lower than the melting temperature of the thermoplastic phase.3. The polymer of claim 2 , wherein the epoxy comprises a copolymer.4. The polymer of claim 3 , wherein the copolymer comprises an aromatic diepoxide monomer and an aliphatic diepoxide monomer.5. The polymer of claim 4 , wherein the aromatic diepoxide monomer comprises diglycidyl ether of bisphenol-A (DGEBA).6. The polymer of claim 5 , wherein the aliphatic diepoxide monomer comprises neopentyl glycol diglycidyl ether (NGDE).7. The polymer of claim 4 , wherein the thermoplastic phase comprises poly(ε-caprolactone) (PCL).8. The polymer of claim 1 , further comprising a cross-linker.9. The polymer of claim 8 , wherein the cross-linker comprises a polyetheramine.10. The polymer of claim 9 , wherein the polyetheramine comprises polypropylene glycol) bis(2-aminopropyl) ether.11. A method of forming a triple shape memory polymer claim 9 , comprising the steps of:blending an aromatic diepoxide monomer and an aliphatic diepoxide monomer with a thermoplastic polymer;blending a cross-linker into the aromatic diepoxide monomer, the aliphatic diepoxide monomer, and ...

Agricultural film formulation, agricultural mulch film and preparation method thereof

The present invention provides an agricultural film formulation, which comprises about 40 wt % to about 70 wt % inorganic mineral powder, about 15 wt % to about 30 wt % high-density polyethylene, about 8 wt % to about 20 wt % low-density polyethylene, about 5 wt % to about 10 wt % biodegradable plastic, and an optional auxiliary agent, based on total weight of the formulation. The present invention also provides an agricultural mulch film made from the agricultural film formulation and a preparation method thereof.

PROCESS FOR THE PRODUCTION OF EXPANDED POLYESTER FOAM BEADS

A process for the production of expanded foam beads that are prepared from pellets comprising polyester mixture comprising 1. A process for the production of expanded foam beads , the foam beads prepared from pellets comprising a polyester mixture comprisinga) from 50 to 99% by weight, based on components a and b, of a biodegradable polyester based on aliphatic, or a mixture of aliphatic and aromatic, dicarboxylic acids and on aliphatic diols, andb) from 1 to 50% by weight, based on components a and b, of polylactic acid, the process comprising the following steps:(i) providing a suspension of the polyester pellets in a suspension medium,(ii) impregnatin the pellets in the suspension of step (i) with at least one physical blowing agent to provide a suspension of blowing-agent-loaded pellets, wherein the impregnation of the at least one blowing agent includes heating the suspension of pellets to a depressurization temperature IMT in a range from 100 to 140° C., with stirring, and(iii) depressurizing the suspension obtained in step (ii) to provide the expanded foam beads,wherein the at least one blowing agent is added in step (i), or in step (ii) during the heating, or after the heating, and following the heating of step (ii), the heated suspension is maintained at a temperature in a range from IMT minus 5° C. to IMT plus 2° C. for a period of 3 to 100 minutes.2. The process according to claim 1 , wherein the suspension medium is water.3. The process according to claim 1 , wherein the biodegradable polyester comprises;A1) from 30 to 100 mol %, based on components A1) and A2), of one or more of an aliphatic dicarboxylic acid,A2) from 0 to 70 mol %, based on components A1) and A2), of one or more of an aromatic, dicarboxylic acid,{'sub': '12', 'B) from 98.5 to 100 mol %, based on components A1) and A2), of one or more of a C2- to C-alkanediol; and'}C) from 0.05 to 1.5% by weight, based on components A1), A2) and B), of a one or more compounds selected from the group ...

Method for production expanded polyester foam particles

A process for producing expanded foam beads from pellets comprising at least one biodegradable polyester. The process comprises (i) producing a suspension comprising pellets in an aqueous suspension medium, (ii) impregnating the pellets present in the suspension from step (i) with at least one physical blowing agent by heating the pellet suspension to a depressurization temperature IMT, with stirring, to provide pellets laden with blowing agent in the suspension medium, and (iii) depressurizing the suspension obtained in step (ii) and cooling the depressurized suspension with a liquid aqueous coolant, in order to obtain the expanded foam beads. The blowing agent can be added in step I, or in step ii during the heating phase or following the heating phase. Following the heating phase, the suspension is maintained at a temperature in the range from IMT minus 5° C. to IMT plus 2° C. for 3 to 100 minutes, and the ratio of aqueous coolant to suspension medium is at least 0.3. The invention further relates to expanded foam beads obtained by the process and to moldings that are produced from the expanded foam beads.

Consumable filaments having reversible reinforcement for extrusion-based additive manufacturing

A consumable assembly for use with an additive manufacturing system to print three-dimensional parts, the consumable assembly including a supply device (e.g., a spool) and a filament supported by the supply device, where the filament has a composition comprising one or more elastomers and one or more reinforcing additives, and a filament geometry configured to be received by a liquefier assembly of the additive manufacturing system. The composition is preferably configured to be thermally and/or chemically modified to reduce its flexural modulus.

BIODEGRADABLE SHEET

Disclosed is a biodegradable sheet comprising at least one layer which is a direct contact layer, intended to successfully contact materials, such as liquids, while maintaining the mechanical properties of the sheet and to extend the biodegradable sheet shelf life. The direct contact layer may comprise a hydrophobic polymer selected from poly(epsilon-caprolactone) (PCL) polyhydroxybutyrate (PHB), Polydioxanone (PDO) polyglycolic acid (PGA), polybutylene succinate (PBS), polybutylene succinate adipate (PBS A), poly lactic acid (PL A), polybutylene adipate terphtalate (PBAT), polyhydroxyalkanoates (PHA), such as polyhydroxybutyrates (PHB), polyhydroxyvalerates (PHV), and polyhydroxybutyrate-hydroxyvalerate copolymers (PHBV) or any mixture thereof. The biodegradable sheet may further comprise surface treated nanoclay particles, PVOH grafted with a crosslinker and PBS or PBS A The biodegradable sheet may further include at least one metalized, biodegradable, laminate layer. 1. A biodegradable sheet , having at least one layer , wherein the layer comprises a first hydrophobic polymer selected from the group consisting of poly(epsilon-caprolactone) (PCL) , a polyhydroxyalkanoate (PHA) and a mixture thereof , and a second hydrophobic polymer selected from the group consisting of polybutylene succinate (PBS) , polybutylene succinate adipate (PBSA) , poly lactic acid (PLA) , polybutylene adipate terphialate (PBAT) , polydioxanone (PDO) , polyglycolic acid (PGA) and any mixture thereof.23-. (canceled)4. The biodegradable sheet of claim 1 , wherein the PHA is selected from the group consisting of polyhydroxybutyrate (PHB) claim 1 , polyhydroxyvalerate (PHV) claim 1 , polyhydroxybutyrate-hydroxyvalerate copolymers (PHBV); and any derivative or mixture thereof.56-. (canceled)7. The biodegradable sheet of wherein the first hydrophobic polymer is present in an amount of about 5% w/w to about 45% w/w claim 1 , about 20% w/w to about 45% w/w or about 25% to about 40%.8. The ...

COMPOSITES OF POLYETHYLENE AND POLYLACTIC ACID

A composite may include polylactic acid, polyethylene, and optionally a compatibilizer. The composite may be formed by combining the polylactic acid with the polyethylene. The composite may be formed into an extruded article. 1. An extruded article comprising:a composite of polylactic acid and polyethylene.2. The extruded article of claim 1 , wherein the composite exhibits a PENT claim 1 , measured in accordance with ASTM-F-1473 claim 1 , that is at least about 10 percent greater than a PENT of the polyethylene.3. The extruded article of claim 1 , wherein the composite exhibits a PENT claim 1 , measured in accordance with ASTM-F-1473 claim 1 , of greater than about 300 hours.4. The extruded article of claim 1 , wherein the composite exhibits a tensile modulus claim 1 , determined in accordance with ASTM D638 claim 1 , that is at least about 2 percent greater than a tensile modulus of the polyethylene.5. The extruded article of claim 1 , wherein the composite exhibits a tensile modulus of greater than 940 MPa claim 1 , determined in accordance with ASTM D638.6. The extruded article of claim 1 , wherein the extruded article is an extruded pipe.7. The extruded article of claim 1 , wherein the composite further comprises a compatibilizer.8. The extruded article of claim 7 , wherein the compatibilizer is a functionalized polyolefin.9. The extruded article of claim 8 , wherein the functionalized polyolefin contains maleic anhydride groups or epoxide groups.10. The extruded article of claim 7 , wherein the compatibilizer is an ethylene acrylate terpolymer.11. The extruded article of claim 7 , wherein the compatibilizer is present in the composite in an amount ranging from about 1 weight percent to about 5 weight percent claim 7 , based on a total weight of the composite.12. The extruded article of claim 1 , wherein the polyethylene is present in the composite in an amount ranging from about 80 weight percent to about 98 weight percent claim 1 , based on a total weight of ...

Biodegradable injectable gel

The present invention relates to a triblock copolymer having a polyethylene glycol-poly(D,L-lactide)-polyethylene glycol skeleton.

Polyolefin Resin Foam Particles, Foam-Particle Moulded Body, And Composite Stacked Body Including Said Moulded Body

The present invention relates to polyolefin resin expanded beads containing multi-layer expanded beads containing a core layer in a foamed state containing a polyolefin resin and a cover layer coated on the core layer, the cover layer containing a mixed resin of a polyolefin resin (A) and at least one resin (B) selected from a polystyrene resin and a polyester resin, and the mixed resin having a weight ratio (A/B) of the polyolefin resin (A) and the resin (B) of from 15/85 to 90/10, and a composite laminated body using an expanded beads molded body thereof, and the expanded beads molded body is excellent in solvent resistance and also excellent in adhesiveness to a thermosetting resin on the surface of the molded body, and can provide a composite laminated body excellent in productivity with a thermosetting resin. 1. A method for producing a composite laminated body comprising:laminating a thermosetting resin on a surface of a polyolefin expanded beads molded body obtained through in-mold molding, andcuring the thermosetting resin layer adhered and laminated on the surface of the polyolefin expanded beads molded body,wherein the expanded beads comprise multi-layer expanded beads containing a core layer in a foamed state containing a polyolefin resin and a cover layer coated on the core layer, the core layer consisting essentially of a polypropylene resin, the cover layer containing a mixed resin of a polyolefin resin (A) and at least one resin (B) selected from a polystyrene resin and a polyester resin, and the mixed resin having a weight ratio (A/B) of the polyolefin resin (A) and the resin (B) of from 15/85 to 90/10.2. The method of claim 1 , wherein a melting point (Ts) of the polyolefin resin (A) contained in the cover layer is lower than a melting point (Tc) of the polyolefin resin contained in the core layer.3. The method of claim 1 , wherein the mixed resin contained in the cover layer further contains a compatibilizing agent of the polyolefin resin (A) and ...

SHAPED POLYLACTIDE ARTICLE AND METHOD OF PREPARATION

A method for preparing a shaped polylactide article including stereocomplex polylactide and to a shaped article obtainable by the method. In particular the method comprises melt mixing and solidifying poly-L-lactide (PLLA) and poly-D-lactide (PDLA) homopolymers in a weight ratio whereby one of the homopolymers is in excess, subsequently solid mixing the so obtained blend with additional homopolymer, and shaping the obtained solids mixture. 1. A method for manufacturing a shaped polylactide article comprising stereocomplex polylactide (sc-PLA) , which method includes the following steps:a) mixing an amount of a first homopolylactide with an excess amount of a second homopolylactide in the molten state to provide a molten blend, the first and second homopolylactides being different from each other and selected from a poly-D-lactide (PDLA) homopolymer and a poly-L-lactide (PLLA) homopolymer;b) solidifying the molten blend and allowing it to crystallize to provide a solidified blend comprising sc-PLA;c) mixing the solidified blend with an additional amount of the first homopolylactide in the solid state to provide a solids mixture;d) shaping the solids mixture by melt processing the solids mixture at a temperature above the melting temperature of the PDLA and PLLA homopolymers and below the melting temperature of the sc-PLA, and cooling the melt processed mixture to a temperature below the melting temperature of the PDLA and PLLA homopolymers to provide a shaped polylactide article comprising sc-PLA.2. The method according to claim 1 , wherein the weight average molecular weight Mw of at least one of the PLLA and PDLA homopolymers is of at least 10000 g/mol as determined by gel permeation chromatography (GPC) with triple detection and hexafluoroisopropanol as the eluent.3. The method according to claim 1 , wherein in step a) the weight ratio of the second homopolymer with respect to first homopolymer is of at least 75:25 and is of at most 99:1.4. The method according to ...

FLAME RETARDANT POLYLACTIC ACID COMPOUNDS

A significant disadvantage of the use of polylactic acid (PLA), lack of flame retardance, has been overcome by the use of specific combinations of either polycarbonate or polyphosphonate-co-carbonate in combination with non-halogenated flame retardants of polyphosphazene or phosphate ester such as resorcinol bis (diphenyl phosphate) or metal hypophosphite, a drip suppressant, and optionally an inorganic synergist of either zinc borate or talc or both and optionally other ingredients. The compound achieves a UL 94 rating of V-0 or V-1 at 1.6 mm. 1. A heat resistant , flame retardant polylactic acid compound , comprising:(a) polylactic acid; (i) polycarbonate,', '(ii) polyphosphonate-co-carbonate, and', '(iii) a combination of them;, '(b) a carbonate polymer selected from the group consisting of'}(c) a non-halogenated flame retardant selected from the group consisting of polyphosphates, phosphinates, polyphosphonates, phosphonates, phosphates, polyphosphonites, phosphonite salts, hypophosphite, hypophosphinite, phosphonite, phosphite, phosphorus oxide, phosphoramide, phosphoramidate, phosphorus nitrile, phospham, phosphoryl nitrile, phosphorus nitride amide, imidophosphazene, polyphosphazene, phosphazene, phosphorus oxynitride, organophosphates, red phosphorus, and combinations thereof;(d) a fluoropolymer drip suppressant; (i) zinc borate,', '(A) if the carbonate polymer is polycarbonate, if the flame retardant is more than 10 weight percent of the compound and if an optional oligomeric chain extender is also present,', '(B) if the carbonate polymer is polyphosphonate-co-carbonate and if the amount of flame retardant is 10 weight percent or less;', '(ii) talc, if the carbonate polymer is polycarbonate and if the combination of polyphosphazene and bisphosphate ester is more than 10 weight percent of the compound; and', '(iii) a combination of them, if the carbonate polymer is polycarbonate, if the flame retardant is more than 10 weight percent of the compound and if ...

A polylactic acid stereocomplex composition, its molded product, a process for its manufacture and its application

The instant invention discloses a polylactic acid stereocomplex composition containing pure stereocomplex crystals and a process for its manufacture. The composition according to this invention comprising (a) 30-70 wt % poly (L-lactic acid) (PLLA). (b) 70-30 wt % poly (D-lactic acid) (PDLA) and (c) 0.01-10 wt % nucleating agent, which can be obtained by solution and melt blending. Stereocomplex crystals are preferentially formed according to the invention, and the homocrystals (a crystal form) for the PLLA or PDLA homopolymer can't be observed. The melting temperature of the composition according to the invention is at least 200° C., which is about 30-50° C. higher than the PLLA or PDLA homopolymer.

FOAM COMPOSITIONS COMPRISING POLYLACTIC ACID POLYMER, POLYVINYL ACETATE POLYMER AND PLASTICIZER, ARTICLES, AND METHODS OF MAKING AND USING SAME

Foam compositions are provided including a polylactic acid polymer; second (e.g., polyvinyl acetate) polymer having a glass transition temperature (T) of at least 25° C.; and plasticizer. Also described are articles comprising the foam compositions, such as a sheet or hearing protection article. Methods of making and using the foam compositions are further described herein. 2. The foam composition of claim 1 , wherein the polylactic acid polymer comprises an amorphous polylactic acid polymer.3. The foam composition of claim 1 , wherein the polylactic acid polymer comprises a semicrystalline polylactic acid polymer.4. The foam composition of claim 1 , further comprising at least one nucleating agent selected from a cell nucleating agent claim 1 , a crystallization nucleating agent claim 1 , a cell stabilizer claim 1 , and a combination thereof.5. The foam composition of claim 4 , wherein the cell stabilizer comprises silica nanoparticles functionalized with a polyethylene glycol silane.6. The foam composition of claim 1 , further comprising a crosslinking agent.7. The foam composition of claim 1 , further comprising a crosslink catalyst comprising an alkyl or alkenyl ammonium claim 1 , phosphonium claim 1 , or imidizolium salt.9. The foam composition of claim 1 , wherein the composition does not exhibit plasticizer migration when aged at 80° C. for 24 hours.10. The foam composition of claim 1 , wherein the foam composition comprises a rough surface morphology.12. A foam sheet comprising the foam composition of .13. A hearing protection article comprising the foam composition of .14. A method of making a foam composition claim 1 , the method comprising:{'sub': 'g', 'a. compressing a mixture comprising a polylactic acid polymer; a second polymer having a Tof at least 25° C., wherein the second polymer comprises polyvinyl acetate; a plasticizer; and a blowing agent; and'}b. heating the compressed mixture, thereby forming the foam composition.15. The method of claim 14 , ...

Plasticized Biodegradable Polyester Film and Preparation Method Thereof

A plasticized biodegradable polyester film formed from a biodegradable polyester in approximately 100 parts by weight, a plasticizer in from approximately 5-25 parts by weight, an inorganic filler in from approximately 0-150 parts by weight; and an antioxidant in from approximately 0.1-1 parts by weight. A method for preparing the plasticized biodegradable polyester film including drying the biodegradable polyester, drying the inorganic filler, mixing the biodegradable polyester, the plasticizer, the inorganic filler and the antioxidant, adding the mixed biodegradable polyester, plasticizer, inorganic filler and antioxidant into an extruder forming extruded plasticized biodegradable polyester material, drying the extruded plasticized biodegradable polyester material, and blowing the dried plasticized biodegradable polyester material as a master batch into film through a extruder to obtain the plasticized biodegradable polyester film. 1. A plasticized biodegradable polyester film comprising:biodegradable polyester in approximately 100 parts by weight;plasticizer in from approximately 5-25 parts by weight;inorganic filler in from approximately 0-150 parts by weight; andantioxidant in from approximately 0.1-1 parts by weight.2. The biodegradable polyester film according to claim 1 , wherein the biodegradable polyester is selected from the group consisting of polylactic acid and poly(butylene terephthalate-co-butylene adipate) ester.3. The biodegradable polyester film according to claim 1 , wherein the biodegradable polyester comprises polylactic acid that has a weight average molecular weight Mw of from approximately 100 claim 1 ,000 to 400 claim 1 ,000.4. The biodegradable polyester film according to claim 1 , wherein the plasticizer is diacetyl epoxy vegetable glyceryl oleate.5. The biodegradable polyester film according to claim 1 , wherein the inorganic filler comprises at least one filler selected from the group consisting of calcium carbonate claim 1 , kaolin ...

Polymer-Encapsulated Polyhemoglobin-Based Oxygen Carrier

PEGylated polyhemoglobin nanocapsules are provided, wherein the nanocapsules each include a core including polyhemoglobin, a polymer shell encapsulating the core, a polydopamine layer on an exterior surface of the shell, and poly(ethylene glycol) adhered by the polydopamine to the shell. A method of forming PEGylated polyhemoglobin nanocapsules includes extracting hemoglobin from red blood cells. The method further includes polymerizing the hemoglobin to provide polyhemoglobin. The polyhemoglobin is then encapsulated in a plurality of polymer shells to form a plurality of polyhemoglobin nanocapsules. In addition, a polydopamine is deposited on an external surface of the polyhemoglobin nanocapsules. Poly(ethylene glycol) is then adhered to the polyhemoglobin nanocapsules with the polydopamine to provide a plurality of PEGylated polyhemoglobin nanocapsules. 1. A method of forming PEGylated polyhemoglobin nanocapsules , comprising:supplying polyhemoglobin;encapsulating said polyhemoglobin in a plurality of polymer shells to form a plurality of nanocapsules having a core containing polyhemoglobin;providing a polydopamine coating on said polymer shell; andadhering poly(ethylene glycol) to said polyhemoglobin nanocapsules with said polydopamine to provide a plurality of PEGylated polyhemoglobin nanocapsules wherein said poly(ethylene glycol) is oriented outwards from said nanocapsules.2. The method of claim 1 , wherein said polyhemoglobin is formed from hemoglobin extracted from bovine or human red blood cells.3. The method of claim 1 , wherein said polyhemoglobin is form from hemoglobin extracted from red blood cells by lysing said red blood cells using a hypotonic lysis buffer.4. The method of claim 1 , wherein said polyhemoglobin is formed by polymerizing hemoglobin with glutaraldehyde.5. The method of claim 1 , wherein said polyhemoglobin exhibits a number average molecular weight (Mn) in the range of 400 kDa to 1 claim 1 ,000 kDa.6. The method of claim 1 , wherein ...

LIQUID CRYSTAL POLYMER COMPOSITION FOR FOAM MOLDING, METHOD FOR PRODUCING FOAM MOLDED BODY, AND FOAM MOLDED BODY

A liquid crystalline polymer composition for foam molding using a supercritical fluid as a foaming agent. The liquid crystalline polymer composition includes a liquid crystalline polymer and a scale-like inorganic filler, in which a content of the scale-like inorganic filler is 1 part by mass or more and 20 parts by mass or less with respect to 100 parts by mass of the liquid crystalline polymer composition. 1. A liquid crystal polymer composition for foam molding using a supercritical fluid as a foaming agent ,the liquid crystal polymer composition comprising a liquid crystalline polymer and a scale-like inorganic filler,wherein a content of said scale-like inorganic filler is 1 part by mass or more and 20 parts by mass or less with respect to 100 parts by mass of said liquid crystalline polymer composition.2. The liquid crystalline polymer composition for foam molding according to claim 1 , wherein said liquid crystalline polymer is a liquid crystalline aromatic polyester resin.3. A method for producing a foamed molded article claim 1 , the method comprising{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a step of melt-kneading a mixture containing the liquid crystalline polymer composition for foam molding according to and a supercritical fluid, and'}a step of foam molding said mixture by lowering at least one of a pressure and a temperature of said melt-kneaded mixture to below a critical point of said supercritical fluid.4. The method for producing a foamed molded article according to claim 3 , wherein a content of said foaming agent in said mixture is 0.01 parts by mass or more and 10 parts by mass or less with respect to 100 parts by mass of said liquid crystalline polymer composition for foam molding.5. A foamed molded article molded from the liquid crystalline polymer composition for foam molding according to and having a weight reduction rate represented by the following formula (1) of 20% or more and 90% or less claim 1 ,{'br': None, 'i': dB−dA', 'dB, ...

HIGH HEAT DEFLECTION TEMPERATURE POLYLACTIC ACIDS WITH TUNABLE FLEXIBILITY AND TOUGHNESS

Stereocomplex biopolymer compositions having tunable and improved mechanical properties and methods of making such compositions are disclosed. The biopolymer compositions include combinations of a matrix-forming polylactic acid comprising an essentially pure enantiomer and a tough polyester to form a polylactic acid matrix. The polylactic acid matrix is further combined with a base polylactic acid comprising an essentially pure opposite enantiomer of the first essentially pure enantiomer of the matrix-forming polylactic acid to form the stereocomplex. 1. A biopolymer composition comprising:a base polylactic acid comprising an essentially pure enantiomer and having a number average molecular weight from about 50,000 Da to about 2,000,000 Da;a matrix-forming polylactic acid comprising an essentially pure opposite enantiomer of the first essentially pure enantiomer of the first polylactic acid and having a number average molecular weight from about 500 Da to about 500,000 Da;a tough polyester having a number average molecular weight range from about 2,000 Da to about 500,000 Da and a glass transition temperature from about −75° C. to about 40° C.;wherein the matrix-forming polylactic acid and the tough polyester have a weight-to-weight ratio from about 1:99 to about 99:1 to form a polylactic acid matrix; andwherein the polylactic acid matrix and the base polylactic acid form a stereocomplex at a weight-to-weight ratio from about 5:95 to about 95:5.2. The biopolymer composition of claim 1 , wherein the base polylactic acid is comprised of essentially pure L-lactyl monomeric units and the matrix-forming polylactic acid is comprised of essentially pure D-lactyl monomeric units.3. The biopolymer composition of claim 1 , wherein the base polylactic acid has a number average molecular weight from about 50 claim 1 ,000 Da to about 300 claim 1 ,000 Da.4. The biopolymer composition of claim 1 , wherein the tough polyester is selected from the group consisting of: polybutylene- ...

BIOPOLYMER FILM AND METHOD OF PREPARING THE SAME

A method of producing biopolymer films is disclosed. The method includes pre-treating a carbon source, preparing a basal media, preparing an inoculum and fermenting the carbon source using the inoculum in the basal media so as to selectively modify the metabolic pathway of the microorganism to produce a biopolymer. Further, the method includes recovering the biopolymer resulting from the step of fermentation and blending the biopolymer with at least one blending agent to produce one or more biopolymer films. 1. A method of producing biopolymer films comprising:pre-treating a carbon source;preparing a basal media;preparing an inoculum and fermenting the carbon source using the inoculum in the basal media so as to selectively modify the metabolic pathway of the microorganism to produce a biopolymer;recovering the biopolymer resulting from the step of fermentation; andblending the biopolymer with at least one blending agent to produce one or more biopolymer films.2. The method as claimed in wherein the biopolymer film is a mixture of polyhydroxybutyrate (PHB) and a blending agent.3. The method as claimed in wherein the carbon source includes a waste carbon source including waste frying oil and waste apple pomace.4. The method as claimed in wherein the pre-treating the carbon source includes sterilizing the waste frying oil through a 0.22 micron filter.5. The method as claimed in wherein the pre-treating the carbon source includes:reconstituting and filtering the waste apple pomace to form a filtrate;drying the filtrate for a day at 55-60° C.;grinding the dried filtrate to form a powder;hydrolyzing the powder with an acid at 100° C. for 15 min to form lysate; andsterilizing the lysate to form an apple pomace lysate.6. The method as claimed in wherein the hydrolyzing includes hydrolyzing the powder using 0.75 wt % sulfuric acid solution having a pH of 1.1 and thereafter neutralizing the powder with 0.5N sodium hydroxide solution.7. The method as claimed in wherein the ...

PLASTIC FILM AND A METHOD FOR MANUFACTURING SAME

The present invention relates to a plastic film and a method for manufacturing same. A plastic film, which is formed such that at least one part has a curved shape, can have high hardness, impact resistance, scratch resistance and high transparency. The plastic film is light and will not be easily damaged by external pressure and thus can substitute for the existing glass and is expected to be used for various electronic products such as a display and the like. In particular, the plastic film has at least one part in a curved shape and thereby is expected to be used for products in various shapes which cannot be manufactured by means of the existing glass. Moreover, a method for manufacturing a plastic film enables manufacturing of a plastic film having at least one part in a curved shape without curls or cracks as well as simultaneous performing of heat molding and heat curing, thereby increasing the productivity of a plastic film. 1. A plastic film of at least partially curved shape , comprising a substrate and a coating layer formed on at least one side of the substrate , said coating layer comprising (i) cationically curable resin , which is a cured product of cationically curable compounds comprising , based on the total weight of the cationically curable compounds , 60 wt % to 100 wt % of 3 ,4 ,3′ ,4′-diepoxybicyclohexyl , and (ii) radically curable resin.2. The plastic film according to claim 1 , wherein the glass transition temperature of the substrate is 80 to 250° C.3. The plastic film according to claim 1 , wherein the cationically curable resin is a cured product obtained by heat curing of cationically curable compounds by a cationic polymerization initiator comprising a cation of the following Chemical Formula 1:{'br': None, 'sup': 1', '1', '2, 'sub': 'k', 'R-A[R]\u2003\u2003[Chemical Formula 1]'}in the Chemical Formula 1,{'sup': '1', 'Ais N, P or S,'}{'sup': '1', 'Ris a C1-20 alkyl or a C2-20 alkenyl radical,'}{'sup': '2', 'Ris a C1-20 alkyl, a C2-20 ...

POROUS RESIN MOLDED BODY AND MOLDING SET FOR FORMING POROUS RESIN MOLDED BODY

A porous resin molded body contains cellulose acylate (A), wherein the porous resin molded body has a porosity of about 2% or more and about 30% or less. 1. A porous resin molded body comprising:cellulose acylate (A),wherein the porous resin molded body has a porosity of about 2% or more and about 30% or less.2. The porous resin molded body according to claim 1 , wherein a pore-size distribution curve has one maximum peak claim 1 , and the one maximum peak has an apex in a range of about 10 nm or more and about 3000 nm or less in pore size.3. The porous resin molded body according to claim 1 , further comprising:a polyester resin (B); andan ester compound (C) having a molecular weight of about 250 or more and about 2000 or less.4. The porous resin molded body according to claim 3 , further comprising at least one polymer (D) selected from core-shell structure polymers having a core layer and a shell layer formed on a surface of the core layer and containing a polymer of an alkyl (meth)acrylate claim 3 , and olefin polymers including about 60 mass % or more of a structural unit derived from α-olefin.5. The porous resin molded body according to claim 3 , further comprising a poly(meth)acrylate compound (E) including about 50 mass % or more of a structural unit derived from an alkyl (meth)acrylate.6. The porous resin molded body according to claim 3 , wherein the cellulose acylate (A) is at least one selected from cellulose acetate propionate (CAP) and cellulose acetate butyrate (CAB).7. The porous resin molded body according to claim 3 , wherein the polyester resin (B) is a polyhydroxyalkanoate.8. The porous resin molded body according to claim 7 , wherein the polyester resin (B) is polylactic acid.9. The porous resin molded body according to claim 3 , wherein the ester compound (C) is a fatty acid ester compound.10. The porous resin molded body according to claim 9 , wherein the ester compound (C) is an adipic acid ester-containing compound.11. The porous resin ...

BIODEGRADABLE POLYESTER MIXTURE

The invention relates to a biodegradable polyester mixture comprising: 1. A biodegradable polyester mixture comprising: [{'sub': 9', '18', '9', '18, 'a-1) 40 to 70 mol %, based on components a and b, of an aliphatic C-Cdicarboxylic acid or of a C-Cdicarboxylic acid derivative;'}, 'b-1) 30 to 60 mol %, based on components a and b, of terephthalic acid or of a terephthalic acid derivative;', {'sub': 3', '6, 'c-1) 98 to 100 mol %, based on components a and b, of a C-Cdiol;'}, 'd-1) 0 to 2 wt %, based on the total weight of components a to e, of an at least trihydric alcohol;', 'e-1) 0 to 2 wt %, based on the total weight of components a to e, of a chain extender, and, 'i) 71 to 91 wt %, based on the total weight of components i and ii, of a polyester I constructed from [{'sub': 4', '6', '4', '6, 'a-2) 40 to 70 mol %, based on components a and b, of an aliphatic C-Cdicarboxylic acid or of a C-Cdicarboxylic acid derivative;'}, 'b-2) 30 to 60 mol %, based on components a and b, of terephthalic acid or of a terephthalic acid derivative;', {'sub': 3', '6, 'c-2) 98 to 100 mol %, based on components a and b, of a C-Cdiol;'}, 'd-2) 0 to 2 wt %, based on the total weight of components a and b, of an at least trihydric alcohol;', 'e-2) 0 to 2 wt %, based on the total weight of components a to e, of a chain extender., 'ii) 9 to 29 wt %, based on the total weight of components i and ii, of a polyester II constructed from2. The biodegradable polyester mixture according to wherein said diacid component a-1 of polyester I is sebacic acid or a sebacic acid derivative.313.-. (canceled)14. The biodegradable polyester mixture according to wherein said diacid component a-2 of polyester II is adipic acid or an adipic acid derivative.15. The biodegradable polyester mixture according to further comprising 10 to 35 wt % claim 1 , based on the total weight of the polymer mixture claim 1 , of one or more fillers selected from the group consisting of calcium carbonate claim 1 , talc claim 1 , ...

Algae-blended thermoplastic compositions

An algae-based thermoplastic composition is provided that includes a protein-rich algae biomass selected from either microalgae, macroalgae or combinations thereof. The protein content is greater than or equal to 15% by weight of the algae biomass and the algae biomass is dried to a moisture content of less than or equal to 15% by weight and having a particle d99 of up to 200 microns. The dried algae biomass is at least 5% by weight of the thermoplastic composition. The composition includes a biodegradable resin configured to exhibit rheological properties suitable for blending with algae including a melting temperature less than 250° C. and a melt flow rate in excess of 0.01 g/10 min.

DECORATIVE MULTI-LAYER SURFACE COVERING COMPRISING POLYVINYL BUTYRAL

The present invention is related to decorative multi-layer surface coverings comprising a core layer, wherein said core layer comprises a polymer blend, said polymer blend comprising polyvinyl butyral and polylactic acid. 1. A decorative multi-layer surface covering comprising a backing layer , a core layer formed on top of the backing layer , and a printed layer formed on top of the core layer , said core layer comprising a polymer blend , said polymer blend comprising:from 20 to 95% by weight of polyvinyl butyral (i); and a mixture of PLA and one or more vinyl alkanoate comprising polymer(s) (iv);', 'a mixture of PLA and one or more (meth)acrylate comprising polymer(s) (iii),', 'a mixture of PLA and one or more vinyl alkanoate comprising polymer(s) and one or more (meth)acrylate comprising polymer(s);', 'a mixture of PLA and one or more thermoplastic polyurethane(s) (v); or', 'a mixture of PLA and one or more vinyl alkanoate comprising polymer(s) (iv) and one or more thermoplastic polyurethane(s) (v);', 'a mixture of PLA and one or more (meth)acrylate comprising polymer(s) (iii) and one or more thermoplastic polyurethane(s) (v); and', 'a mixture of PLA and one or more vinyl alkanoate comprising polymer(s) and one or more (meth)acrylate comprising polymer(s) and one or more thermoplastic polyurethane(s) (v);', 'provided that said mixture comprises at least 5% by weight of polylactic acid;, 'from 5 to 80% by weight, PLA (ii) or of a mixture selected from the group consisting ofthe total amount of polymer in the polymer blend representing 100% by weight.2. The decorative multi-layer surface covering according to claim 1 , wherein polyvinyl butyral is recycled polyvinyl butyral.3. The decorative multi-layer surface covering according to claim 1 , wherein polyvinyl butyral is recycled polyvinyl butyral comprising from about 5 to about 50% by weight claim 1 , of one or more plasticizers selected from the group consisting of alkyl esters of polyethylene glycol claim 1 , ...

BENDABLE PANEL

A bendable panel comprising a substrate layer, wherein the panel is provided with a mechanism enabling the panel to bend. The mechanism enabling the panel to bend is at least one groove or cut, and the depth of the groove or cut is no longer than the panel thickness. The substrate layer is prepared by the following materials with the following mass ratio: 100 parts of PVC resin or PVC powder, 30-55 parts of a styrene based elastomer, 150-300 parts of stone powder, sawdust or rock, 1-10 parts of an additive, and 1-4 parts of an elastomer coupling agent. The panel may be bent during the installation, and several panels can be seamlessly installed.

BIODEGRADABLE SHEET

Disclosed is a biodegradable sheet comprising at least one layer which is a direct contact layer, intended to successfully contact materials, such as liquids, while maintaining the mechanical properties of the sheet and to extend the biodegradable sheet shelf life. The direct contact layer may comprise a hydrophobic polymer selected from poly(epsilon-caprolactone) (PCL) polyhydroxybutyrate (PHB), Polydioxanone (PDO) polyglycolic acid (PGA), polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), poly lactic acid (PLA), polybutylene adipate terphtalate (PBAT), polyhydroxyalkanoates (PHA), such as polyhydroxybutyrates (PHB), polyhydroxyvalerates (PHV), and polyhydroxybutyrate-hydroxyvalerate copolymers (PHBV) or any mixture thereof. The biodegradable sheet may further comprise surface treated nanoclay particles, PVOH grafted with a crosslinker and PBS or PBSA The first hydrophobic polymer is present in said at least one layer in an amount of about 30% w/w.

Polymer foams

A polymer composition that includes a polyolefin having a molecular weight distribution of greater than or equal to 8 as measured by GPC and a metallic acrylate salt.

Colorant and additive concentrate carrier system with efficacy over a wide range of polymeric processing temperatures

A concentrate carrier system for adding colorants and/or other additives to resin formulations over a broad range of processing temperatures is described. The carrier system includes at least 20 wt. % of a base acrylate copolymer, such as ethyl-methyl acrylate, provided in combination with less than 30 wt. % of polycarpolactone, or a similar ring-opened cyclic ester or ether derivatives. The remainder, which may include an optional organic plasticizer such as epoxidized soybean oil, is dedicated to an additive package that may include colorants, property enhancers, and/or non-property fillers.