СПОСОБ ПОЛУЧЕНИЯ ИЗДЕЛИЯ ИЗ ТЕРМОПЛАСТА И ИЗДЕЛИЕ, ПОЛУЧЕННОЕ УКАЗАННЫМ СПОСОБОМ

Изобретение относится к способу получения однослойного или двухслойного изделия из термопласта, изделию из термопласта, полученному указанным способом и применению его в качестве внутренней отделки электрических бытовых приборов, в частности в качестве внутренней двери для холодильников или внутренней ячейки холодильника. Изделие из термопласта получают экструзией/вспениванием пластмассы, каландрированием экструдированного листа и горячим формованием для получения требуемой формы. Способ получения отличается применением в качестве вспенивающего агента смеси лимонной кислоты и полиэтилена. Полученное изделие демонстрирует уменьшение плотности не более чем на 30 масс.%, предпочтительно не более чем на 20 масс.% по сравнению с изделием, полученным из того же материала, не являющегося вспененным. Уменьшение плотности предпочтительно составляет от 14 масс.% до 18 масс.%, чтобы обеспечить таким образом такие же механические характеристики, как и у изделия из того же полимерного материала, но ...

ТЕРМОПЛАСТИЧНЫЕ ПОЛИМЕРЫ

Изобретение относится к композиции для получения вспененного термопластичного полимера и способу получению композиции и получению вспененного термопластичного полимера, которые могут быть применены, для получения электроизолирующих и термоизоляционных изделий, например кабельной изоляции, витых изделий, труб. Композиция включает смесь оксалатного соединения и термопластичного полимера, выбранного из полимеров, имеющих температуру обработки расплава не менее 250°С, т.е. из фторполимеров, полиамидов, полиамидоимидов, простых полиэфиримидов, поликетонов, полифениленсульфидов, производных полисульфонов, полибезимидазолов, полиимидов, полиэтилентерефталата, полибутилентерефталата, полициклогександиметилтерефталатов, синдиотактического полистирола, поликарбоната. Оксалатное соединение представляет собой компонент, содержащий переходный металл, например оксалат марганца. Термопластичные полимеры подвергают вспениванию с использованием твердой композиции путем нагревания композиции до температуры ...

ТЕРМОРЕАКТИВНЫЕ СЛОЖНОПОЛИЭФИРНЫЕ ПЕНОМАТЕРИАЛЫ И СПОСОБ ИЗГОТОВЛЕНИЯ

Изобретение относится к способу изготовления термореактивного сложнополиэфирного пеноматериала. Способ включает следующие последовательные стадии, в которых: (а) формируют расширяемую и термореактивную композицию, содержащую полиольный компонент, включающий по меньшей мере одно соединение, выбранное из глицерина, диглицерина и олигомеров глицерина, поликислотный компонент, включающий по меньшей мере 50% по весу лимонной кислоты, поверхностно-активное вещество, выбранное из алкилполигликозидов и смесей анионного поверхностно-активного вещества и катионного поверхностно-активного вещества, и катализатор эстерификации, (b) вводят расширяемую и термореактивную композицию в форму, или наносят расширяемую композицию на подложку,(с) нагревают расширяемую и термореактивную композицию при температуре, равной по меньшей мере 175°С, чтобы провести реакцию полиольного компонента с поликислотным компонентом и образовать блок термореактивного сложнополиэфирного пеноматериала. При этом полиольный компонент ...

Соединение с органической аминовой солью, имеющее анион в качестве донора CO, и его использование в качестве вспенивающего агента

Изобретение относится к вспенивающему агенту, содержащему соединение соли органического амина формулы (I) или смесь соединений солей органического амина формулы (I). Формула (I): A[B](I), где A- анион - источник CO, имеющий -n валентность, где n=1, 2 или 3, Bпредставляет собой или содержит ион аммония с валентностью +1 и/или один или более катионов органического амина (B), в котором каждый катион (B) имеет группу -NRRH и/или группу -NRH- в количестве m, где m=1-5, 00 мас.% до 40 мас.%. Также предложены способы ...

СПОСОБ ПОЛУЧЕНИЯ ХИТОЗАНОВОЙ ГУБКИ (ВАРИАНТЫ)

Группа изобретений относится к химии высокомолекулярных соединений, касается вариантов способа получения хитозановой губки, которая может быть использована в медицине в качестве раневых покрытий, гемостатических материалов, матриц для тканевой инженерии. Способ получения хитозановой губки включает растворение хитозана в водном растворе уксусной кислоты, соляной кислоты или молочной кислоты. После полного растворения хитозана при перемешивании добавляют вспениватель. В качестве вспенивателя используют гидрокарбонат натрия, гидрокарбонат калия или гидрокарбонат аммония. Затем осуществляют отмывку полученной губки от остатков кислоты и вспенивателя, сушку полученной губки. Компоненты используют в заявленных соотношениях. Группа изобретений обеспечивает упрощение синтеза и расширение области применения получаемой губки за счет возможности регулирования скорости процесса ее получения и пористости. 3 н.п. ф-лы, 7 ил., 10 пр.

ГАЛОГЕНИРОВАННЫЕ ЭЛАСТОМЕРЫ, ОБЛАДАЮЩИЕ СТАБИЛЬНОЙ ВЯЗКОСТЬЮ ПО МУНИ, И СПОСОБ ИХ ПОЛУЧЕНИЯ

Настоящее изобретение относится к стабилизации бромированных эластомеров с целью устранения их склонности к увеличению вязкости во времени. Описан способ улучшения стабильности вязкости по Муни бромированного эластомера. Способ включает нейтрализацию выходящего потока бромированного эластомера нейтрализующим реагентом и водой с получением нейтрализованного выходящего потока, содержащего углеводородный растворитель. Затем удаляют растворитель из нейтрализованного выходящего потока с получением суспензии бромированного эластомера и выделяют бромированный эластомер из суспензии бромированного эластомера. Стабилизатор на основе содержащего функциональную аминогруппу стерически затрудненного амина (СЗА) и поглотитель кислоты добавляют вместе или по отдельности до проведения стадии удаления растворителя. Поглотитель кислоты содержит протонируемый атом, обладающий значением рKа, превышающим значение содержащегося в СЗА атома азота. Также описаны композиции бромированного эластомера для герметизирующих ...

УЛУЧШЕНИЯ, ОТНОСЯЩИЕСЯ К ПОЛИУРЕТАНАМ

ТЕРМОПЛАСТИЧНЫЕ ПОЛИМЕРЫ

ПОЛИМЕРНЫЙ МАТЕРИАЛ ДЛЯ ТЕПЛОИЗОЛИРОВАННОГО КОНТЕЙНЕРА

... 1. Состав для формования теплоизолирующей ячеистой неароматической полимерной структуры, причем состав включаетпервый полимерный материал, содержащий по меньшей мере один полипропилен с высокой прочностью расплава, характеризующийся длинноцепочечным разветвлением,второй полимерный материал, содержащий по меньшей мере один полимер, выбранный из группы, состоящей из полипропилена, полиэтилена и их смесей, по меньшей мере один нуклеирующий агент, и по меньшей мере одну добавку, понижающую трение.2. Состав по п. 1, где первый материал представляет собой гомополимер.3. Состав по п. 1, где первый полимерный материал имеет прочность расплава не менее 36 согласно ISO 16790.4. Состав по п. 1, где первый полимерный материал имеет температуру плавления не менее 163°C (325,4°F).5. Состав по п. 1, где второй полимерный материал содержит материал на основе полиэтилена, выбранный из группы, состоящей из полиэтилена низкой плотности, линейного полиэтилена низкой плотности, полиэтилена высокой плотности ...

СПОСОБ ПОЛУЧЕНИЯ ИЗДЕЛИЯ ИЗ ПЕНОПОЛИУРЕТАНА

Formgegenstand aus Thermoplast-Harz und Verfahren zu seiner Herstellung

Blowing agent for thermoplastic polymer foams, comprises an oxide or hydroxide of a Group 2 element, iron and/or zinc, a carbonate, hydrogen carbonate or sulfate of a Group 1 or 2 element and a wax.

Blowing agent (I) for thermoplastic polymers comprises a mixture of: (A) at least one oxide or hydroxide of a Group 2 element, iron and/or zinc; (B) at least one carbonate, hydrogen carbonate or sulfate of a Group 1 or 2 element; and (C) a natural or synthetic wax and/or a copolymer having a melting point or softening point below 100 deg C. An Independent claim is also included for a process for the production of foamed molded articles based on thermoplastic polymers and water producing inorganic compounds and other additives by mixing the blowing agent (I) with at least one olefinic polymer followed by known thermal treatment.

Vernetzter Elastomerschaum auf Basis von Polyolefin und Zusammensetzung dafür

EIN- UND MEHRSCHICHTIGE POLYOLEFIN-SCHAUMSTOFFROHRE

Improvements in or relating to methods of generating gases within plastic materials

In the formation of gas-expanded cellular materials, gas is generated within the material by incorporating in the initial material maleic anhydride and/or phthalic anhydride, calcium carbonate and/or barium peroxide, heating the material and applying water vapour thereto, whereby the anhydride is converted into the corresponding acid which then reacts with the carbonate and/or peroxide to generate gas within the material. The initial material may be a mixture of polyvinyl chloride, tricresyl phosphate and azo-isobutyric dinitrile.

MANUFACTURE OF THERMOPLASTIC POLYMER FOAMS

... 1309087 Thermoplastic polymer foams IMPERIAL CHEMICAL INDUSTRIES Ltd 20 Oct 1970 [18 Nov 1969] 56404/69 Heading C3C A foam is made by heating a thermoplastic polymer above its melting point with a blowing agent comprising a heterocyclic compound having a carboxyl group directly attached to the heterocyclic ring which decarboxylates in the presence of the molten polymer. The polymer may be a polyamide, polyolefine or polymethacrylate or a copolymer of ethylene, 2-hydroxyethyl methacrylate and methyl methacrylate. The foaming may be carried out in the presence of a non-ionic surfactant, e.g. a condensate of a C 10-20 alkanol or C 10-20 alkylamine with up to 5 moles of an alkylene oxide. The blowing agent may be imidazole-4,5-dicarboxylic acid, purazole-(3 or 4),5-dicarboxylic acid, furan-tetracarboxylic acid, pyrazole-3,4,5-tricarboxylic acid or 1,2,3-triazole-4,5-dicarboxylic acid.

Thermoplastics polymers

Gas releasing sealing and filling compositions

Dry Granular Process and Product

... 1,178,847. Additives for PVC. CHEMISCHE WERKE MUNCHEN OTTO BARLOCHER G.m.b.H. 6 March, 1967 [15 March, 1966], No. 10445/67. Heading C3P. Granular products are obtained from pulverulent plastics additives by mixing with a granulating agent consisting of an organic compound having a melting point above 40‹ C. which is solid and non-adhesive at room temperature and has a molecular weight above 150, heating the mixture to melt the granulating agent while stirring vigorously, then cooling while under reduced stirring. Preferably the application is to PVC additives such as stabilizers, fillers, dyes, anti-static agents and fire retarding agents and as granulating agents are used processing lubricants. In examples the following materials are mixed, the heat of stirring being sufficient to melt the granulating agent and then cooled while stirring less vigorously: (1) dibasic lead stearate, neutral lead stearate, chalk coated with calcium stearate and cetyl palmitate; (2) dibasic lead sulphate, ...

Composition for forming polyurethane foam having flame retardancy and yellowing resistance

Organopolysiloxane elastomeric foams

A process for preparing a cured elastomeric foam comprises mixing together (1) a polymer of the general formula in which Ac is a saturated aliphatic monoacyl radical, R and R1 are each a monovalent hydrocarbon radical, a halogenated monovalent hydrocarbon radical or a cyanoalkyl radical and n is an integer of value at least 5, (2) from 1 to 50% by weight, calculated on the weight of (1) of an organic isocyanate free from active hydrogen and (3) water in amount greater than one molecule of water per isocyanate radical. The radicals in the polymer (1) can, where appropriate, be as specified for the corresponding compound in Specification 862,576. Isocyanates specified are methyl, butyl, octadecyl and hexenyl isocyanate and hexamethylene diisocyanate; cyclohexyl, cyclohexenyl, xenyl, bromophenyl, anthracyl, p-dimethylaminophenyl, p-methoxy-, phenyl, naphthyl, 3,5-dichlorophenyl, and m- and p-nitrophenyl isocyanates; toluene, p,p1-diphenylmethane, and 3,31-dimethyl, ...

Production of polyester foam

Polyester foam is formed by simultaneously cross-linking an unsaturated polyester resin and generating carbon dioxide as a blowing agent. The foam-forming components are divided into two parts which comprise (A) part of the resin, a cross-linkable monomer, a carbonate and a cross-linking catalyst promoter, and (B) the remainder of the resin, a cross-linking monomer, an acid and a cross-linking catalyst, and these parts are blended together to effect the simultaneous reactions and form the foam.

Expansible compositions of polymers of styrene.

PROCEDURE FOR THE PRODUCTION OF FOAM MATERIALS

PROCEDURE FOR THE PRODUCTION OF A FOAM MATERIAL

PU INTEGRAL FOAM ARTICLE

VERFAHREN ZUR HERSTELLUNG EINES SCHAUMSTOFFES

Top layer for sandwich components

PROCEDURE FOR THE PRODUCTION OF A FOAM MATERIAL

PROCEDURE FOR THE PRODUCTION OF FIRE-RETARDANT POLYESTER FOAM MATERIALS AND PROPELLANT SYSTEM HIEFUR

PROCEDURE FOR THE PRODUCTION OF MOLDED ARTICLES FROM POLYURETHAN-FOAM MATERIALS.

USE OF TWO-COMPONENT REACTION RESINS FOR ATTACHMENT PURPOSES.

PROCEDURE FOR THE PRODUCTION OF PU SOFT FOAM MATERIALS WITH LOW DENSITY AND SO PRESERVATIONS OF PU SOFT FOAM MATERIALS

CATALYST MIXTURES FOR THE PRODUCTION OF PU FOAMS WITH LOW THERMAL DESORPTION

CELLULOSE SPONGES

PROCEDURE FOR THE SUDSY OF ACYLOXYSILANHALTIGER SILICONE MASSES

SILICONE FOAM RUBBER COMPOSITION

Drying granulation procedure

Controlling bubble formation in silicone foam filler of breast implants

A method for manufacturing a breast implant includes producing an elastic filler material including foam, by applying a source of gas bubbles to a silicone monomer to create a mixture. The mixture is inserted into a sealed chamber. After inserting the mixture, a pressure inside the sealed chamber is set to a first pressure, and a temperature of the mixture inside the sealed chamber is set to a first temperature. Then, following a preset time duration, the pressure is lowered to a second pressure that is lower than the first pressure, and after a given time, the temperature is lowered to a second temperature that is lower than the first temperature. A flexible shell, configured for implantation within a breast of a human subject, is filled with the elastic filler material.

Process and apparatus to foam a water-base adhesive

The invention relates to a process to foam a water-base adhesive wherein a gas is dissolved or generated under pressure in the water phase essentially without the formation of foam. To apply the adhesive in the form of foam, the pressurized adhesive is released through a valve onto a substrate at atmospheric pressure, whereby the dissolved gas separates as gas bubbles. The invention relates further to an apparatus for the implementation of said process comprising a pressure-tight container for the adhesive wherein an overpressure is provided through a first valve, and at the outlet of said container a drain valve is placed. The apparatus further comprises a pressure-tight acid vessel for the acid which is furnished with a second valve at its inlet The outlet of said vessel is connected through a third valve to the container.

FOAM MANUFACTURE

Polymeric material for an insulated container

POLYMERIC MATERIAL FOR AN INSULATED CONTAINER A formulation includes a polymeric material, a nucleating agent, a blowing, and a surface active agent. The formulation can be used to form a container.

Method for producing polyurethane hard foams and polyisocyanurate hard foams

The invention relates to a method for producing polyurethane hard foams or polyisocyanurate hard foams by reacting at least one polyisocyanate A), polyether ester polyols B) based on aromatic dicarboxylic acids obtainable by esterification of b1) 10 to 70 mol% of a dicarboxylic acid composition containing b11) 50 to 100 mol%, in relation to the dicarboxylic acid composition, of one or a more aromatic dicarboxylic acids or derivatives thereof, b12) 0 to 50 mol%, in relation to the dicarboxylic acid composition b1), of one or a more aliphatic dicarboxylic acids or derivatives thereof, b2) 2 to 30 mol% of one or more fatty acids and/or fatty acid derivatives, b3) 10 to 70 mol% of one or more aliphatic or cycloaliphatic diols having 2 to 18 C atoms or alkoxylates of the same, b4) 2 to 50 mol% of a polyether polyol having a functionality greater than or equal to 2, produced by alkoxylation of a polyol having a functionality greater than 2, where necessary further polyester polyols C), which ...

POROUS PLASTIC STRUCTURES HAVING APERTURES

STYRENE-ACRYLIC AEROL POLYMER FOAMS

METHOD FOR PREPARING FOAMED BUFFER MATERIAL FROM WASTE PAPER RECYCLING SLUDGE

The disclosure belongs to the technical field of packaging materials, and relates to a method for preparing a foamed buffer material from waste paper sludge. Specifically, the method includes the following steps: using waste paper sludge as a main fiber raw material and old 5 newspaper pulps, adding a dispersant to lower viscosity of materials, using cationic corn starch with a high degree of substitution, polyvinyl acetate emulsion and vital wheat gluten as an adhesive, mixing fully with a foaming agent, a crosslinking agent, a lubricant and a release agent to form a slurry, pouring into a mold, foaming at 30 W/g for 2 min in a microwave oven, maintaining at 20 W/g for 2 min after dryness of the slurry reached 60%, and drying at 10 W/g to 10 dryness of material of 93-95%. Demoulding is carried out after the drying is completed to obtain a foamed buffer material. A foamed buffer material with a relatively low apparent density and a relatively high compressive strength can be prepared in ...

Chemical foaming of PVC with surface-reacted calcium carbonate (MCC) and/or hydromagnesite

The present invention relates to a PVC resin composition for preparing foamed polymer products, to a foamed polymer product prepared from the composition, to a method for preparing a foamed polymer product, to an article comprising the foamed polymer product as well as to the use of a surface-reacted calcium carbonate, hydromagnesite and mixtures thereof for reducing the density of the obtained foamed PVC product.

FOAMED ACRYLIC POLYMER COMPOSITIONS

Expanded film suitable for plastic coverings with improved greenhouse effect for farming purposes

CELLULAR PRODUCTS PRODUCED BY FOAMING AND CROSS-LINKING AROMATIC POLYSULFIDES

FOAMED THERMOPLASTIC POLYURETHANES

Process for the preparation of foamed thermoplastic polyurethanes characterised in that the foaming of the thermoplastic polyurethane is carried out in the presence of thermally expandable microspheres.

METHOD OF PRODUCING CROSS-LINKED, UNSATURATED POLYESTERS

A method of producing cross-linked unsaturated polyesters from a solution of a linear unsaturated polyester in a cross-linking agent, wherein a reaction medium comprising said solution and containing free hydroxyl radicals is brought in contact, at room temperature and under atmospheric pressure, with at least on hydrolysable chlorine-containing derivative in an amount from 0.1 to 10% by weight, based on said solution.

EXPANDABLE THERMOPLASTIC POLYMER COMPOSITION CONTAINING THERMALLY DECOMPOSABLE CARBONATES

The present invention relates to a process for expanding thermoplastic polymer compositions notably those containing polymers having processing temperatures in excess of 200.degree.C and/or containing an ingredient which is susceptible to ammonia, characterised in that as the blowing agent certain carbonates (notably zinc carbonate) are used. Preferably a nucleating agent and a weak acid are present to aid cell formation. The invention also includes expandable polymer compositions and blowing agent formulations containing the carbonates.

THERMOPLASTIC FOAM AND PROCESS FOR THE PREPARATION THEREOF

Anhydride-containing thermoplastic polymers are foamed with ammonium carbonate, ammonium bicarbonate and ammonium oxalate to provide foams having good heat distortion characteristics and avoiding organic blowing agents. 26,445-F ...

EPOXY RESIN, PROCESS FOR THE PREPARATION THEREOF AND PROCESS FOR THE PRODUCTION OF EPOXY FOAM

... 72932-20 Disclosed is a process for the production of an epoxy resin foam, in which a polyepoxy compound having at least two epoxy groups is crosslinked and simultaneously foamed by the aid of a carbonate oligomer having terminal phenolic hydroxyl groups. The product is highly flexible against compression, bending and warp. The process proceeds without using a conventional foaming agent, since the carbonate oligomer releases carbon dioxide which acts as a foaming agent.

TWO-PART PHOSPHATE ESTER ELASTOMERIC EPOXY COMPOSITION AND METHOD OF USE THEREOF

The present teachings provide for a two-part system and a method of using the two-part system, the two-part system comprising: a first component including one or more epoxy resins; a second component including one or more phosphate esters; and wherein, upon mixing the first component and second component a cured elastomeric composition is formed in a temperature of about 0 °C to about 50 °C.

ORGANIC AMINE SALT COMPOUNDS HAVING CO2-DONATING ANIONS AND THEIR USE AS FOAMING AGENT

An organic amine salt compound having the general formula (I): An-[Bm+]p. In the formula, An- is anions having -n valence serving as CO2 donors, wherein n = 1, 2, or 3; Bm+ is or contains: ammonium ions and/or organic amine B cations; m = 1-10; formula (AA); An- is selected from one or more of the following anions: (a) carbamate; (b) carbonate; (c) formate; (d) bicarbonate; (e) organic monocarbonate; (f) organic polycarbamate; formula (g) or formula (J); or (h) organic polycarbonate; the compound of general formula (I) has at least one hydroxyalkyl linked to N atoms, i.e. has alcohol amine residue. Same can serve as a polyurethane foaming agent, a polystyrene foaming agent, or a polyvinyl chloride foaming agent.

COMPOSITIONS, ADDITIVES, AND COMPOUNDS FOR MELT PROCESSABLE, FOAMABLE, AND CELLULAR FLUOROPOLYMERS

... ²² The disclosure provides a composition or set of compositions and method ²for producing cellular, foamed, or blown fluoropolymers such as ²perfluoropolymers and other ²thermoplastics to create a lower cost communications cable, conductor ²separator, conductor ²support-separator, jacketing, tape, wire insulation and in some cases a ²conduit tube as ²individual components or combined configurations that exhibit improved ²electrical, ²flammability and optical properties. Specifically, the foamable or blown ²perfluoropolymer ²cellular insulation composition comprises; talc and the selected ²fluoropolymers such as ²perfluoropolymers. Compounded pellets including inorganic and organic fillers ²resulting in ²products in cellular or foamable form with and without solid skin surfaces has ²also been ²realized by providing melt combinations within the pellets primarily ²comprising talc and a ²perfluoropolymer, and additives as needed to provide desired property ²differentiation.² ...

GLASS-FIBER-REINFORCED SPACER FOR INSULATING GLAZING UNIT

The present invention relates to a spacer for an insulating glazing unit, at least comprising a polymeric main body, at least comprising two parallel side walls that are connected to one another by an inner wall and an outer wall, wherein the side walls, the inner wall, and the outer wall surround a hollow chamber, wherein the main body - has a glass fiber content of 0 wt.-% to 40 wt.-%, and - has, due to hollow spaces, a weight reduction of 10 wt.-% to 20 wt.-%.

METHOD FOR PREPARING POROUS SCAFFOLD FOR TISSUE ENGINEERING, CELL CULTURE AND CELL DELIVERY

The present invention relates to a method for preparing a porous scaffold for tissue engineering. It is another object of the present invention to provide a porous scaffold obtainable by the method as above described, and its use for tissue engineering, cell culture and cell delivery. The method of the invention comprises the steps consisting of: a) preparing an alkaline aqueous solution comprising an amount of at least one polysaccharide, an amount of a cross-linking agent and an amount of a porogen agent b) transforming the solution into a hydrogel by placing said solution at a temperature from about 4°C to about 80°C for a sufficient time to allow the cross-linking of said amount of polysaccharide and c) submerging said hydrogel into an aqueous solution d) washing the porous scaffold obtained at step c).

POLYMERIC MATERIAL FOR AN INSULATED CONTAINER

A formulation includes a polymeric material, a nucleating agent, a blowing, and a surface active agent. The formulation can be used to form a container.

PREPARATION OF HARD FOAMS CONTAINING URETHANE GROUPS OR CONTAINING URETHANE AND ISOCYANURATE GROUPS

O.Z. 0050/41852 A process for the preparation of a hard foam containing urethane groups or containing urethane and isocyanurate groups involves reacting a) an organic and/or modified organic polyisocyanate with b) at least one high-molecular-weight compound contain ing at least two reactive hydrogen atoms and, if desired, c) a low-molecular-weight chain extender and/or cross linking agent, in the presence of d) a blowing agent, e) a catalyst and, if desired, f) assistants and/or additives, where the blowing agent (d) used is at least one organic carboxylic acid, preferably an aliphatic monocarboxylic acid, alone or in combination with water and/or a physical blowing agent, and the catalyst (e) used is a polyisocyanurate catalyst, preferably an alkali metal salt or ammonium salt of an organic carboxylic acid or tris(dialkylaminoalkyl)-s-hexahydrotriazine.

A PROCESS FOR THE CFC-FREE PRODUCTION OF CELLULAR POLYURETHANE MOLDED PARTS

A process for the CFC-free production of cellular polyurethane molded parts/articles with solid surfaces by reacting a reaction mixture of per se known starting materials in sealed molds, to yield polyurethane foams. Carbamates obtainable from aliphatic aminoalcohols and carbon dioxide are used as blowing agents, optionally in conjunction with other blowing agents. The process is suitable for producing foam coverings on steering wheels, spoilers and protective upholstery in car interiors, and for producing soles of shoes or shoe components.

ENDOTHERMIC BLOWING AGENTS COMPOSITIONS AND APPLICATIONS

MOLDED CLOSURE FOR A LIQUID CONTAINER

A molded closure for a liquid container comprising a thermoplastic elastomer and a blowing agent. The molded closure is particularly suitable for use as a synthetic wine cork in a wine bottle. The molded closu re does not permit passage of oxygen into the container, does not absorb oxygen from the contents of the container, can be removed from th e container using a corkscrew without significant expansion, crumbling or disintegration, does not significantly taint a liquid in the container, permits me container to be placed horizontally immediately after insertion of the molded closure, and can permanently retain printed matter on its surfaces.

PLASTICS ARTICLES

A foamed polyester resin article is made by a method comprising forming a molten mixture containing poly (ethylene terephthalate) having an intrinsic viscosity greater than 0.7 and a moisture content of not greater than 0.03 %, a melt viscosity modifier and a heat activatable foaming agent having a decomposition temperature greater than 150 ~C, heating the mixture in the barrel of an extruder and extruding the mixture through the die of the extruder. The method can be used to produce extruded poly (ethylene terephthalate) sheet having a foamed structure suitable for subsequent thermoforming into packaging articles and food containers such as those used as dualovenable food trays used for reheating foods in microwave or conventional ovens. The articles produced by the method have a density which may be 35 - 40 % less than that of similar articles made from conventional, non-foamed poly (ethylene therephthalate).

Masse spongieuse de caoutchouc et procédé pour sa fabrication.

Verfahren zur Herstellung eines schwammartigen Isoliermaterials aus Textilabfällen

Verfahren zur Herstellung von Polyamidschäumen

Verfahren zur Herstellung von Schaumstoffen

Verfahren zur Herstellung von Polyamidverschäumungsgemischen

Verfahren zur Herstellung von Schaumstoffen

Production of porous coatings films based on vinyl

Compositions based on aqueous vinyl chloride polymer pastes for the prodn. of porous coatings and films consist of a mixture of (a) emulsion polymerised polymers with an average particle size of 30-100 microns, and a density of more than 0.5 g./cm.3, which is obtained by subjecting the emulsion to vibrations, (b) plasticisers, (c) optionally fillers and dyes, and (d) an amount of 2-15% aqueous ammonium carbonate or bicarbonate soln. corresponding to 0.2-3% wt. carbonate/bicarbonate, on wt. of solids in the composition. The composition is employed for producing a coating or film in the usual way, and is then gelled by heating at an elevated temp.

Verfahren zum Einsetzen bzw. Erneuern der Auskleidung von Drehrohröfen und Einrichtung zur Ausübung desselben

Verfahren zur Herstellung von Polyamidschaumstoffen

PLATTE AUS NYLONMATERIAL UND VERFAHREN ZUR HERSTELLUNG DERSELBEN.

Procédé de fabrication d'un matériau cellulaire étanche rigide

Procédé de préparation d'un objet à base de polymère synthétique

Verfahren zur Herstellung von Polyamidschäumen

Motorisch betriebener Trockenrasierapparat mit Langhaarschneider

Granulate

Verfahren zur Herstellung geschäumter Überzüge

Verfahren zur Herstellung von Polyamidschäumen

Verfahren zur Herstellung von Polystyrolschaumstoffen

Verfahren zur Herstellung von Polyamidschäumen

Process for expanding thermoplastic polymers

Neutral or basic zinc or cadmium carbonate is employed as blowing agent with a pulverulent nucleating agent which promotes the formation of gas bubbles, especially talc. The expansion is produced by heating the mixture of polymer, blowing agent and nucleating agent in the absence of any strong acid. This eliminates the risk of deterioration of the polymer which is encountered in processes employing blowing agents which release ammonia or blowing agents comprising sodium carbonate and a strong acid. The process applies very particularly to the expansion of polymers whose processing requires a temperature above 200 DEG C.

Foam polymers made from crosslinked cyclodextrins, and process for their preparation

Fast-swelling cyclodextrin foam polymers having a solid foam structure and a large specific surface area are prepared by reacting the cyclodextrins with crosslinking agents and foam-forming blowing agents in one or two steps in the presence of an alkali metal hydroxide and water or in the presence of an acid and water. The resultant foam polymers have a large specific surface area and are distinguished by a high water-absorption capacity and good swellability.

PROCÉDÉ DE FABRICATION D'UN ARTICLE DE TABLE À BASE DE FIBRES VÉGÉTALES ET D'AMIDON, ENTIÈREMENT BIODÉGRADABLE.

La présente invention concerne un procédé de fabrication d'un article de table à base de fibres végétales et d'amidon, entièrement biodégradable, de faible coût. Une matière cellulosique végétale contenant des résidus de Scutellaria baicalensis est modifiée pour obtenir un produit d'extrusion. De la gomme de konjac est soumise à une pulvérisation et à une pulvérisation en particules ultrafines pour obtenir un liant colloïdal combiné à une gomme de konjac désacétylée. Le liant colloïdal est mélangé avec le produit d'extrusion pour obtenir un mélange. Le mélange est soumis à un moulage de mousse dans un moule de formage pour obtenir l'article de table à base de fibres végétales et d'amidon, entièrement biodégradable, de faible coût.

CABLE, CONTAINING FOAMED LAYER, POLYMER INCLUDING POLYOLEFIN AND FOAMING AGENT

МОДИФИЦИРОВАННЫЙ ВСПЕНИВАЮЩИЙ И ВСПЕНЕННЫЙ МАТЕРИАЛ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

Предметом изобретения является модифицированный вспенивающийся и вспененный материал, который кроме полистирола, производных дифенилэтилена содержит также стабилизатор дисперсии в виде натриевой соли карбоксиметилцеллюлозы, диспергатор в виде водного раствора катионоактивного поверхностно-активного вещества, ингибитор эндогенного и экзогенного горения в виде динитросопентаметилентетрамина, а также водный раствор золя кремниевой кислоты. Предметом изобретения является также способ получения вспенивающего и вспененного материала, в частности полистирола, благодаря которому в значительной мере снижается риск выделения химических веществ в процессе пиролиза этих пластических масс.

CABLE COMPRISING A FOAMED LAYER COMPRISING A POLYOLEFIN POLYMER AND A BLOWING AGENT

Modified silicone resin foamed body

Preparation method of waterproof sealing rubber strip

Foaming agent for plastics

A process for the production of foamed plastic parts, in which a blowing agent composition is introduced into a plastic matrix and causes pore formation in the plastic matrix by releasing at least carbon dioxide gas from the blowing agent composition, wherein the blowing agent composition contains at least one carbon dioxide carrier selected from carbonates, hydrogen carbonates and carbamates of alkali metals, alkaline earth metals, aluminum, transition metals and/or ammonium, and at least one acid carrier.

Laser-induced plastic foaming

A matrix material composed of polymer, preferably of thermoplastic polymer, or coating material. The matrix material includes 0.01 to 50% by weight of an additive for foaming of the matrix material which can be triggered by irradiation with laser light or IR light. The additive includes at least the following constituents: a) at least one absorber material which, embedded or dissolved in the matrix material, absorbs laser light or IR light and brings about local heating in the matrix material at the site of irradiation with laser light or IR light, and b) at least one blowing agent which, when heated due to the irradiation with laser light or IR light to temperatures above 50° C., forms a gas which foams the matrix material by decomposition, chemical conversion or reaction.

Compositions for compounding, extrusion and melt processing of foamable and cellular fluoropolymers

The present invention relates generally to the use of talc as a chemical foaming agent in perfluoropolymers to form foamable and foamed compositions. For example, in one aspect, a foamable composition is disclosed, which comprises (i) one or more base perfluoropolymers comprising at least 50 percent by weight of the composition, and (ii) talc blended with the one or more base perfluoropolymers, where the talc comprises 3 percent to about 15 percent by weight of the composition. Each of the perfluoropolymers is selected from the group consisting of tetrafluoroethylene/perfluoromethylvinyl ether copolymer (MFA), hexafluoropropylene/tetrafluoroethylene copolymer (FEP) and perfluoroalkoxy (PFA) and any blend thereof, where hydrogen-containing fluoropolymers are absent from the composition. The one or more base perfluoropolymers are melt-processable at one or more elevated processing temperatures of at least about 600° F. at which the talc functions as a chemical foaming agent for extrusion or mold processing of the composition into a foamed article having uniform cell structures.

Composition for porous plastics for intake housings

Disclosed is a porous plastic resin composition including a polypropylene-based resin, a polyamide-based resin, or an alloy resin made by alloying the two resins to each other with a compatibilizer, reinforced with an inorganic filler or a short glass fiber, and further including a porous inorganic filler and a special inorganic low blowing agent. When the disclosed porous plastic resin composition is used to make an intake housing part, it reduces the weight and cost of an automobile intake housing part.

Foamable composition for polyurethane foam and polyurethane foam

A foamable composition for polyurethane foam is provided which advantageously improves heat insulating properties, a long-term stability, and a dimensional stability of a polyurethane foam that is produced by using carbon dioxide as a blowing agent. Further, a polyurethane foam which has excellent heat insulating properties is provided by foaming and curing the foamable composition for polyurethane. In the production of the polyurethane foam in which carbon dioxide is used in the foaming, a polyol component is used which includes a phenolic resin polyol that is obtained by adding at least one alkylene oxide to a phenolic novolak resin, and an aromatic amine polyol that is obtained by adding at least one alkylene oxide to an aromatic diamine such that the total amount thereof is 60% or more by mass, based on the total polyol component.

Producing rigid polyurethane foams and rigid polyisocyanurate foams

The present invention relates to a process for producing rigid polyurethane foams or rigid polyisocyanurate foams by the reaction of at least one polyisocyanate A), polyetherester polyols B) based on aromatic dicarboxylic acids obtainable by esterification of b1) 10 to 70 mol % of a dicarboxylic acid composition comprising b11) 50 to 100 mol %, based on the dicarboxylic acid composition, of one or more aromatic dicarboxylic acids or derivatives thereof, b12) 0 to 50 mol %, based on said dicarboxylic acid composition b1), of one or more aliphatic dicarboxylic acids or derivatives thereof, b2) 2 to 30 mol % of one or more fatty acids and/or fatty acid derivatives, b3) 10 to 70 mol % of one or more aliphatic or cycloaliphatic diols having 2 to 18 carbon atoms or alkoxylates thereof, b4) 2 to 50 mol % of a polyether polyol having a functionality of not less than 2, prepared by alkoxylating a polyol having a functionality of not less than 2 in the presence of an amine as catalyst, optionally further polyester polyols C) other than those of component B), and at least one polyether polyol D), wherein the mass ratio of total components B) and optionally C) to component D) is at least 7. The present invention also relates to the rigid foams thus obtainable and also to their use for producing sandwich elements having rigid or flexible outer layers. The present invention further relates to the underlying polyol components.

Resin foam and process for producing the same

Provided is a resin foam which has satisfactory strain recovery, is particularly resistant to shrinkage of its cell structure caused by the resinous restitutive force at high temperatures, and exhibits superior high-temperature strain recovery. The resin foam according to the present invention is obtained from a resin composition including an elastomer and an active-energy-ray-curable compound. The resin composition gives an unfoamed measurement sample having a glass transition temperature of 30° C. or lower and a storage elastic modulus (E′) at 20° C. of 1.0×10 7 Pa or more, each determined by a dynamic viscoelastic measurement.

Polymeric material for an insulated container

A formulation includes a polymeric material, a nucleating agent, a blowing agent, and a surface active agent. The formulation can be used to form a container.

Composition For Preparing A Polymeric Foam

The present invention relates to composition for the preparation of a polymeric foam with improved thermal properties, to a polymeric foam obtainable therefrom, and to a method for preparing such a polymeric foam each for them comprising (i) an at least essentially amorphous polymer resin and (ii) a nucleating agent. The at least essentially amorphous polymer resin is preferably polystyrene. The nucleating agent is preferably selected from the group consisting of 1,3:2,4-bis-(benzylidene)-sorbitol derivates and mixtures thereof, and is preferably 1,3:2,4-bis-O-(4-methylbenzylidene)-D-sorbitol, 1,3:2,4-bis-(3,4-Dimethylbenzylidene)-sorbitol and 1,3:2,4-bis-(4-propylbenzylidene)-propyl sorbitol. 112.-. (canceled)15. (canceled) The present invention relates to compositions for the preparation of a polymeric foam with improved thermal properties, and to a foamed polymeric article obtainable therefrom, and to a method for preparing such a polymeric foam or article.In response to environmental concerns, there has been an evolution from using hydrochlorofluorocarbon (HCFC) foam blowing agents to using carbon dioxide and/or hydrocarbons and alcohols. Unfortunately, as a result of this change, the thermal conductivity of foam materials has increased due to the higher conductivity of these new blowing agents. This results in insulation foams that no longer fulfill the required product specifications unless additional steps are taken to increase the thermal resistance of these insulation foams.It is known that an infrared attenuation agent (IAA) can be used to improve an insulation foam. An effective infrared attenuation agent favors increased reflection and absorption and decreased transmission of heat radiation as much as possible. Traditionally, inorganic materials have been used as IAA to reduce the portion of heat radiation. This includes, for example, graphite, aluminum, stainless steel, cobalt, nickel, carbon black, and titanium dioxide. As an example for several ...

THERMALLY EXPANDABLE COMPOSITIONS

The present application relates to a thermally expandable composition containing an endothermic chemical blowing agent, to shaped bodies containing said composition and to a method for sealing and filling cavities in components, for strengthening or reinforcing components, in particular hollow components, and for bonding movable components using shaped bodies of this type. 1. A thermally expandable composition containing at least one endothermic chemical blowing agent , at least one reactive binder and at least one of a curing agent and an accelerator.2. The thermally expandable composition according to claim 1 , wherein the at least one endothermic chemical blowing agent is selected from bicarbonates claim 1 , solid polycarboxylic acids claim 1 , solid polycarboxylic acid salts and mixtures thereof; and the at least one reactive binder is selected from the group consisting of epoxies claim 1 , rubbers claim 1 , peroxide-crosslinkable polymers and combinations thereof.3. The thermally expandable composition according to claim 2 , wherein the endothermic chemical blowing agent contains a bicarbonate of formula XHCO claim 2 , wherein X is a cation.4. The thermally expandable composition according to claim 3 , wherein X is selected from Na claim 3 , K claim 3 , NH claim 3 , ½ Zn claim 3 , ½ Mg claim 3 , ½ Ca and mixtures thereof.5. The thermally expandable composition according to claim 2 , wherein the endothermic chemical blowing agent contains a mixture of 2 or more bicarbonates.6. The thermally expandable composition according to claim 2 , wherein the solid polycarboxylic acids are selected from organic di- claim 2 , tri- claim 2 , tetra- acids and combinations thereof.7. The thermally expandable composition according to claim 2 , wherein the solid polycarboxylic acids comprise hydroxyl-functionalized and/or unsaturated di- claim 2 , tri- claim 2 , tetra- or polycarboxylic acids.8. The thermally expandable composition according to claim 2 , wherein the endothermic ...

Foamable particle and method of use

A physically crosslinked foamable particle comprises a polyolefin resin and a chemical foaming agent, the foamable particle having a volume of at least about 0.002 mm 3 .

RHEOLOGY MODIFICATION BY POROUS GEL PARTICLES

Modification of the rheology of a liquid medium, aqueous or nonaqueous, with polymers in the form of specific particles obtained by grinding (micronizing) a porous macrogel, itself prepared by a process comprising a radical polymerization step which comprises reacting in the presence of pore formers monomers containing monomers bearing at least two ethylenic unsaturations, typically in combination with monomers bearing a single ethylenic unsaturation; a polymerization initiator; and optionally a polymerization control agent. These polymer particles keep other particles in suspension within the liquid medium, and also the stabilized suspensions are obtained. 1. A method comprising adding crosslinked polymer particles (p) to a liquid medium , the crosslinked polymer particles (p) obtained by grinding a macrogel prepared by a process comprising a radical polymerization step (E) which comprises reacting , within a reaction medium M comprising pore formers: at least one radical polymerization initiator;', 'optionally at least one radical polymerization control agent, 'ethylenically unsaturated monomers, containing monomers m1 bearing at least two ethylenic unsaturations;'}to modify the rheology of said liquid medium.2. The method as claimed in claim 1 , wherein the monomers employed in step (E) comprise not only monomers m1 but also monomers m2 bearing a single ethylenic unsaturation claim 1 , preferably with a mass ratio m1/m2 of between 0.01 and 30.3. The method as claimed in claim 1 , wherein the liquid medium is an aqueous liquid medium.4. The method as claimed in claim 1 , wherein particles are kept in suspension within the liquid medium.5. The method as claimed in claim 1 , wherein the pore formers employed in step (E) are gas bubbles.6. The method as claimed in claim 1 , wherein step (E) first comprises a step (E1) in which only a part of the ethylenically unsaturated monomers are polymerized in the absence of pore formers claim 1 , then a step (E2) in which the ...

FOAMS AND METHOD OF FORMING FOAMS OF IONOMERS OF COPOLYMERS OF VINYLIDENE AROMATIC MONOMER AND UNSATURATED COMPOUNDS WITH ACID GROUPS

A foaming composition useful to make an extruded foam is comprised of comprising a plurality of chains of a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids, the copolymer having about 0.01 to about 15.0 percent by weight of the one or more unsaturated acids wherein the acid groups are pendant from the copolymer a metal salt, metal oxide or combination thereof, the metal having a valence of at least 2; and one or more blowing agents. The foaming composition may be made into a foam by heating the foaming composition to a temperature sufficient to melt and ionically crosslink said copolymer which is then extruded through a die forming a foam. The foam is comprised of an ionically crosslinked aforementioned copolymer, wherein the copolymer is crosslinked through ionic bonds between the unsaturated acids and the metal of the metal salt or metal oxide. 1. A foaming composition comprising:(a) a plurality of chains of a copolymer of one or more vinylidene aromatic monomers and one or more unsaturated acids, the copolymer having about 0.01 to about 15.0 percent by weight of the one or more unsaturated acids wherein the acid groups are pendant from the copolymer;(b) a metal salt, metal oxide or combination thereof, the metal having a valence of at least 2; and,(c) one or more blowing agents.2. The foaming composition of wherein the foaming composition is an admixture of each of (a) claim 1 , (b) and (c).3. The foaming composition of claim 1 , wherein the foaming composition are separate parts that are brought into contact when forming a foam.4. The foaming composition according to claim 1 , wherein the metal is one or more of transition metals claim 1 , post transition metals claim 1 , metalloids or an alkaline earth metals.5. The foaming composition according to claim 1 , wherein the metal is one or more of zinc claim 1 , zirconium claim 1 , aluminum claim 1 , magnesium and calcium.6. The foaming composition according to claim 1 , ...

Ball With Injection Molded Foam Core

The present disclosure relates generally to an injection molded foam core composition, and a method of manufacturing the foam core. The core is made of an injection molded foam from a resin with glass temperature higher than 50° Celsius and provides improved ball performance tolerances as compared to prior art molded balls. 1. An injection molded foam core composition for a ball , comprising:a. a polycarbonate base resin;b. a blowing agent with solubility in the base resin; andc. a chain extension agent.2. The composition of claim 1 , wherein the base resin is selected from a group consisting of polyethylene terephthalate claim 1 , polybutalene terephthalate claim 1 , polytrimethylene terephthalate claim 1 , polylactic acid claim 1 , acrylonitrile butadiene styrene claim 1 , polycarbonate claim 1 , polystyrene claim 1 , high impact polystyrene claim 1 , and any combinations thereof.3. The composition of claim 1 , wherein the polycarbonate base resin comprises acrylonitrile butadiene styrene (ABS).4. The composition of claim 1 , wherein the ABS is about 40-99.8% by weight of the total composition.5. The composition of claim 1 , wherein the blowing agent comprises sodium bicarbonate.6. The composition of claim 1 , wherein the sodium bicarbonate is about 0.1 to 1% by weight.7. The composition of claim 1 , wherein the chain extension agent is selected from a group consisting of pyromellitic dianhydride and methylenediphenyl diisocyanate.8. The composition of claim 1 , wherein the pyromellitic dianhydride is about 0.01-1% by weight.9. The composition of claim 1 , wherein the methylenediphenyl diisocyanate is about 0.01-0.5% by weight.10. The composition of claim 1 , further comprising an impact modifier.11. The composition of claim 1 , wherein the impact modifier is 0-59% by weight of high impact polystyrene.12. The composition of claim 1 , further comprising a nucleating agent.13. The composition of claim 1 , wherein the nucleating agent is about 0.05-1% by weight of ...

Method for Preparing Porous Scaffold for Tissue Engineering, Cell Culture and Cell Delivery

The present invention relates to a method for preparing a porous scaffold for tissue engineering. It is another object of the present invention to provide a porous scaffold obtainable by the method as above described, and its use for tissue engineering, cell culture and cell delivery. The method of the invention comprises the steps consisting of: a) preparing an alkaline aqueous solution comprising an amount of at least one polysaccharide, an amount of a cross-linking agent and an amount of a porogen agent b) transforming the solution into a hydrogel by placing said solution at a temperature from about 4° C. to about 80° C. for a sufficient time to allow the cross-linking of said amount of polysaccharide and c) submerging said hydrogel into an aqueous solution d) washing the porous scaffold obtained at step c).

ORGANIC AMINE SALT COMPOUNDS HAVING CO2-DONATING ANIONS AND THEIR USE AS FOAMING AGENT

An organic amine salt compounds of general formula A[B](I) is disclosed, wherein A is a CO-donating anion with a valence of −n, wherein n=1, 2 or 3; each B comprises: ammonium ion, hydrazinium ion and/or organic amine B cation; wherein 49. The foaming agent according to claim 48 , wherein (1a) H[OCH(R)CH(R)]— is H(OCHCH)— claim 48 , H(OCHCH(CH))— claim 48 , H(OCH(CH)CH)— claim 48 , H(OCHCH(CH))— claim 48 , H(OCH(CH)CH)— claim 48 , H(OCHCH(CHCl))— claim 48 , H(OCH(CHCl)CH)— or H(OCHCH(CBr))—.50. The foaming agent according to claim 48 , wherein: the water content in the foaming agent is from >0 wt % to 40 wt %; and/orthe pH of the foaming agent is 7.5-10.51. The foaming agent according to claim 50 , wherein: the water content in the foaming agent is 5-35 wt %; and/orthe pH of the foaming agent is 7.8-9.5.52. The foaming agent according to claim 51 , wherein: the water content in the foaming agent is 10-30 wt %; and/orthe pH of the foaming agent is 8-9.5.53. The foaming agent according to claim 52 , wherein: the water content in the foaming agent is 15-25 wt %.54. The foaming agent according to claim 48 , wherein: the total content of the compounds of the general formula (I) and water in the foaming agent is 70-100 wt % claim 48 , based on the total weight of the foaming agent.55. The foaming agent according to claim 54 , wherein: the total content of the compounds of the general formula (I) and water in the foaming agent is 80-99.999% claim 54 , based on the total weight of the foaming agent.56. The foaming agent according to claim 55 , wherein: the total content of the compounds of the general formula (I) and water in the foaming agent is 85-99.0% claim 55 , based on the total weight of the foaming agent.58. The foaming agent according to claim 57 , wherein the organic amine compound (B) is an organic amine compound having N—R group(s) claim 57 , and the organic amine compound (B) having N—R group(s) is formed by substitution on ammonia or on at least one N atom of ...

Method for producing a foamed material,composition in the form of an emulsion used in said method, and foamed material that can be obtained from said method

The present invention relates to a process for producing a foamed material, wherein a composition in the form of emulsion with a matrix-forming component, a surfactant component and a near-critical or supercritical blowing agent component is submitted to a lowering of pressure. The blowing agent component further comprises a hydrophobic co-component, which is soluble in supercritical CO 2 at a pressure of ≧150 bar, is insoluble in subcritical CO 2 at a pressure of ≦40 bar and is insoluble in the matrix-forming component and furthermore is present in a proportion from ≧3 wt % to ≦35 wt % of the blowing agent component. It further relates to a composition in the form of emulsion to be used herein and a foamed material obtainable by the process according to the invention.

COMPOSITION FOR POLYURETHANE FOAMING, POLYURETHANE FOAM AND USE THEREOF

A composition for polyurethane foaming, a polyurethane foam and a use thereof. The composition contains two different polyols with a polyethylene oxide ether structure and a polypropylene oxide ether structure, and a specific type of catalyst, flame retardant and water are added thereto; at the same time, the composition contains a small amount of a surfactant and other small molecular alcohols. The traits of the product are that it is pale yellow and transparent, and the product is not layered during long-term storage. The above-mentioned composition and polyphenylpolymethylene polyisocyanate (PAPI) produce a low-density polyurethane foam by means of a foaming machine. The foam has a good thermal insulation effect and a high rate of yield, and the foam has a flame retardant property, that is to say, same can be used for construction insulation, and can also be used for packaging a buffer material, has a good thermal insulation, adhesion and dimensional stability, and has a low odor during the process of construction, the foaming agents all use water, and do not contain chlorofluorocarbon substances that destroy the ozone layer and climate. 2. The composition according to claim 1 , wherein the polyether polyol A is produced by the polymerization of propylene oxide claim 1 , ethylene oxide and the mixture of one or more of sorbitol claim 1 , sucrose claim 1 , pentaerythritol claim 1 , 2 claim 1 ,4-diamino-phenol claim 1 , ethylenediamine and tris(hydroxymethyl)propane in any mixing ratio as an initiator; wherein the molar ratio between the propylene oxide and the ethylene oxide is 7:3-9:1.3. The composition according to claim 1 , wherein the polyether polyol A is produced by the polymerization of propylene oxide claim 1 , ethylene oxide and the mixture of sucrose claim 1 , tris(hydroxymethyl)propane claim 1 , sorbitol in any mixing ratio as an initiator; the average functionality is 4-5; the hydroxyl value is 400-500 mgKOH/g; the molar ratio between the propylene ...

PROCESSING AIDS FOR USE IN MANUFACTURE EXTRUDED POLYSTYRENE FOAMS USING LOW GLOBAL WARMING POTENTIAL BLOWING AGENTS

A foamable polymeric mixture is provided that includes a polymer composition and at least one blowing agent. The blowing agent may comprise any blowing agents known not to deplete the ozone or increase the prevalence of global warming, such as CO, HFO, HFC and mixtures thereof. The foamable polymeric mixture may further includes at least one processing aid comprising an organic phase changing material. The inventive foamable mixture is capable of processing at a pressure range of 800 to 1200 psi (5.5 to 8.3 MPa). 1. A foamed insulation product comprising: polystyrene;', 'a blowing agent composition comprising carbon dioxide and at least one of hydrofluoroolefins and hydrofluorocarbons, and', 'from 0.05 to 3 wt. % of an organic phase changing material, based upon the weight of the polymeric foam composition, wherein the organic phase changing material has a transition temperature from liquid to solid at a temperature from −5 to 60° C.;, 'a polymeric foam composition comprisingwherein the foamed insulation product has an insulation R-value per inch of between 4 and 7.2. The foamed insulation product of claim 1 , wherein the organic phase changing material comprises at least one of a fatty acid ester and a wax.3. The foamed insulation product of claim 2 , wherein the organic phase changing material comprises a synthetic beeswax.4. The foamed insulation product of claim 1 , wherein the organic phase changing material is microencapsulated.5. The foamed insulation product of claim 4 , wherein the organic phase changing material is microencapsulated by a polymer material comprising one or more of melamine formaldehyde claim 4 , urea formaldehyde claim 4 , and acrylate copolymer resins.6. The foamed insulation product of claim 1 , further comprising at least one infrared attenuating agent.7. The foamed insulation product of claim 1 , wherein the foamed insulation product is monomodal.8. The foamed insulation product of claim 1 , wherein the foamed insulation product has a ...

NON-ISOCYANATE POLYURETHANE PRODUCTS AND METHODS OF MAKING THE SAME

The present disclosure relates to a method for making a non-isocyanate polyurethane (NIPU) foam, where the method includes decomposing a blowing agent having at least one of an amine carbamate salt and/or an amine bicarbonate salt to form a diamine and COin the presence of a molecule comprising a plurality of cyclic carbonate functional groups and reacting the diamine with at least a portion of the cyclic carbonate functional groups to form the NIPU foam. In some embodiments of the present disclosure, the reacting and the decomposing may occur at substantially the same rate. 1. A method for making a non-isocyanate polyurethane (NIPU) foam , the method comprising:{'sub': '2', 'decomposing a blowing agent comprising at least one of an amine carbamate salt or an amine bicarbonate salt to form a diamine and COin the presence of a molecule comprising a plurality of cyclic carbonate functional groups; and'}reacting the diamine with at least a portion of the cyclic carbonate functional groups to form the NIPU foam.2. The method of claim 1 , wherein the reacting and the decomposing occur at substantially the same rate.3. The method of claim 1 , wherein the molecule is derived from a biomass.4. The method of claim 4 , wherein the molecule is derived from at least one of a soybean oil claim 4 , a linseed oil claim 4 , or an algae oil.5. The method of wherein the molecule is produced by carbonating an unsaturated lipid or oil.6. The method of claim 1 , wherein the NIPU foam has a density between about 0.01 g/cmand about 0.80 g/cm.7. The method of claim 1 , wherein the decomposing is accomplished by heating.8. The method of claim 1 , wherein the heating is performed by at least one of conductive heating claim 1 , radiative heating claim 1 , or radio frequency heating.9. The method of claim 7 , wherein the heating results in a temperature between about 50° C. and about 200° C.10. The method of claim 1 , wherein the diamine comprises between 1 and 10 carbon atoms.11. The method ...

Method for producing sheet

Provided is a method for producing a foamable sheet with a convenient process. The method for producing a sheet includes the steps of: molding a resin composition including a thermoplastic resin and inorganic substance particles in a ratio of 80:20 to 20:80 and further including a foaming agent into a sheet-like product and stretching the sheet after being molded. The foaming agent preferably includes a polyethylene resin as a carrier resin and a hydrogencarbonate as an active component that acts as a thermally decomposable foaming agent serving as a foam nucleating agent.

Soft actuator and methods of fabrication

Soft actuators are fabricated from materials that enable the actuators to be constructed with an open-celled architecture such as an interconnected network of pore elements. The movement of a soft actuator is controlled by manipulating the open-celled architecture, for example inflating/deflating select portions of the open-celled architecture using a substance such as compressed fluid.

Injection-molded foam of resin composition with satisfactory surface property and capable of weight reduction and rib design

A foam injection molded article includes a resin composition, wherein the resin composition includes: (A) a polycarbonate resin, (B) a thermoplastic polyester resin, (C) a polyester-polyether copolymer, and (D) a foaming agent. The article has an arithmetic average roughness (Ra) that is greater than 0.1 μm and less than 9 μm, a maximum height (Ry) that is greater than 1 μm and less than 90 μm; and a 10-point average roughness (Rz) that is greater than 1 μm and less than 70 μm.

FOAMABLE MASTERBATCH AND POLYOLEFIN RESIN COMPOSITION WITH EXCELLENT EXPANDABILITY AND DIRECT METALLIZING PROPERTY

The present disclosure provides a masterbatch prepared by melting and extruding a mixture including a polyolefin resin, wherein the mixture includes 10 to 89% by weight of a polyolefin resin, 5 to 30% by weight of a chemical blowing agent, 5 to 30% by weight of thermally expandable microcapsule, and 1 to 30% by weight of an inorganic filler. In addition, the present disclosure provides a polyolefin resin composition with excellent expandability and direct metallizing property, which includes the foamable masterbatch. A molded article obtained by foam injection molding of the polyolefin resin composition according to one form of the present disclosure can be useful in satisfying uniform distribution and mechanical properties of foamed cells so that the molded article can be widely applied to parts for automobile interior/exterior materials, and also improving fuel efficiency of automobiles by achieving lightweight parts. 1. A foamable masterbatch prepared by melting and extruding a mixture comprising a polyolefin resin ,wherein the mixture comprises:(A) 10 to 89% by weight of a polyolefin resin;(B) 5 to 30% by weight of a chemical blowing agent;(C) 5 to 30% by weight of thermally expandable microcapsule; and(D) 1 to 30% by weight of an inorganic filler.2. The foamable masterbatch of claim 1 , wherein the polyolefin resin (A) comprises at least one selected from the group consisting of a random copolymer formed by polymerization of a comonomer selected from the group consisting of homo-polypropylene (Homo-PP) claim 1 , propylene claim 1 , ethylene claim 1 , butylene claim 1 , and octene claim 1 , a block copolymer formed by blending an ethylene-propylene rubber with polypropylene claim 1 , and a copolymer of polyethylene claim 1 , ethylene vinyl acetate claim 1 , and α-olefin.3. The foamable masterbatch of claim 1 , wherein the chemical blowing agent (B) comprises at least one selected from the group consisting of azodicarbon amide claim 1 , p claim 1 ,p′-oxybis( ...

Esterified acids for use in polymeric materials

The present teachings contemplate a method that includes a step of providing a first amount of esterified reaction product of an acid and an epoxy-based material. The esterified reaction product may be further reacted an epoxy resin to form a polymeric epoxy. The resulting material may have a generally linear backbone, foaming and curing capability and flame retardant properties,

Polypropylene resin composition and expanded molding

A polypropylene-based resin composition is provided that can provide a foam molding that exhibits an excellent closed cell characteristic and excellent extrusion characteristics, that is light weight and has a rigid feel, and that has an excellent recyclability. This polypropylene-based resin composition contains 100 weight % or is less than 100 weight % but at least 70 weight % of component (A) below and contains 0 weight % or is greater than 0 weight % but not more than 30 weight % of component (B) below, component (A): a propylene-based resin composition that comprises at least the following two components: a propylene-α-olefin copolymer (A1) satisfying conditions (A-1) to (A-3) and a propylene homopolymer (A2), (A1) and (A2) being obtained by polymerization by a multistage polymerization method, and this propylene-based resin composition having a content of (A1) of 1 to 20 weight % and a content of (A2) of 99 to 80 weight %, having a melt flow rate in the range from 5 to 20 g/10 minutes and exhibiting strain hardening in a measurement of extensional viscosity at a temperature of 180° C. and a strain rate of 10 s −1 , (A-1) an α-olefin content of 15 to 85 weight %, (A-2) an intrinsic viscosity q of 5 to 20 dL/g, (A-3) a Mw/Mn of 5 to 15; component (B): a propylene-based resin composition comprising at least the following two components: a propylene homopolymer or a propylene-α-olefin copolymer having a content of non-propylene α-olefin of less than 1 weight % (B1), which has an MFR of 10 to 1000 g/10 minutes, and a propylene-α-olefin copolymer (B2) that has a weight-average molecular weight of 500,000 to 10,000,000 and a content of non-propylene α-olefin of 1 to 15 weight %, (B1) and (B2) being obtained by polymerization by a multistage polymerization method, and this propylene-based resin composition having a content of (B1) of 50 to 90 weight % and a content of (B2) of 50 to 10 weight %, and satisfying prescribed conditions (B-1) to (B-3).

Method for manufacturing foam-molded article, and foam-molded article

A foam-molded article has high weldability to a polypropylene-based resin molded article, a high expansion ratio, and a predetermined level of impact resistance despite using inexpensive polyethylene-based resin. The foam-molded article includes a foamed and molded base material resin in which a first polyethylene-based resin, a second polyethylene-based resin, and a polypropylene-based resin are mixed. The first polyethylene-based resin has a long-chain branched structure and a density of 0.920 g/cm 3 or more. The second polyethylene-based resin is manufactured by a low pressure slurry method, and has a long-chain branched structure and a density of 0.920 g/cm 3 or less. The second polyethylene-based resin has a melt tensile force of 70 mN or more at 160° C. The polypropylene-based resin has a compounding ratio of 20% or more by weight of the base material resin.

THERMOPLASTIC POLYMERS

Thermoplastic polymers, for example fluoropolymers, are foamed by use of a solid formulation comprising thermoplastic polymer and manganese oxalate. 114-. (canceled)15. A method of preparing a foamed thermoplastic polymer which comprises subjecting a mixture comprising an oxalate compound and a thermoplastic polymer to a temperature of greater than 300° C.16. (canceled)17. A method according to claim 15 , wherein said thermoplastic polymer to be foamed is a high performance thermoplastic polymer which:(i) has a melting point of at least 250° C.; and/or(ii) has a continuous use temperature of at least 160° C.; and/or(iii) has a melt flow rate (MFR at 372° C./5.0 kg) assessed using IS012086 in the range 1.2 to 36 g/10 min; and/or(iv) has a tensile strength, measured in accordance with ASTM D638, of at least 1500 psi; and/or(v) has a flexural modulus, in accordance with ASTM D790 at +23° C., of at least 70,000 psi; and/or(vi) has a tensile modulus, in accordance with ASTM D638, of at least 30,000.18. A method according to claim 15 , wherein said thermoplastic polymer to be foamed is selected from fluoropolymers claim 15 , high-performance polyamides (HPPAs) claim 15 , liquid crystal polymers claim 15 , polyamideimides (PAIs) claim 15 , polybenzimidazoles (PBIs) claim 15 , polybutylene terephthalates (PBTs) claim 15 , polyetherimides (PHs) claim 15 , polyimides (Pis) claim 15 , polyketones (PAEKs) claim 15 , polyphenylene sulfides (PPS) claim 15 , polysulfone derivatives claim 15 , polycyclohexane dimethyl-terephthalates (PCTs) claim 15 , syndiotactic polystyrene claim 15 , PET and polycarbonate.19. A method according to claim 15 , wherein said thermoplastic polymer to be foamed is a fluoropolymer.20. A method according to claim 15 , wherein said thermoplastic polymer to be foamed is FEP.21. A method according to claim 15 , wherein the ratio of the total weight of thermoplastic polymers divided by the total weight of oxalate compounds in said mixture is less than 1000 ...

BLOWING AGENTS IN POLYMER FOAM PROCESSING SYSTEMS

Methods and systems that include introducing blowing agent into a hopper of a polymeric foam processing system. 1. A method comprising:providing a hopper of a polymer foam processing system;supplying polymeric material to the hopper;supplying chemical blowing agent to the hopper;supplying physical blowing agent to the hopper;supplying the polymeric material, chemical blowing agent and physical blowing agent to an inlet of an extruder including a screw configured to rotate in a barrel;conveying a mixture of polymeric material, chemical blowing agent and physical blowing agent in a downstream direction in the extruder;accumulating a shot of the mixture of polymeric material and blowing agent; andinjecting the shot into a mold to form a molded polymeric foam article.2. The method of claim 1 , wherein the weight percentage of the chemical blowing agent in the mixture is less than or equal to 1.0 weight percent of the polymeric material in the mixture.3. The method of claim 1 , wherein the physical blowing agent comprises nitrogen.4. The method of claim 1 , wherein the weight percentage of the physical blowing agent in the mixture is less than or equal to 1.0 percent of the weight of the polymeric material in the mixture.5. The method of claim 1 , wherein the physical blowing agent is supplied to the hopper at a pressure of less than 40 bar.6. The method of claim 1 , wherein the physical blowing agent is supplied to the hopper at a desired physical blowing agent pressure based claim 1 , at least in part claim 1 , on a desired weight percentage of blowing agent in the shot.7. The method of claim 1 , further comprising determining the desired physical blowing agent pressure claim 1 , in part claim 1 , from the volume of physical blowing agent in the hopper.8. The method of claim 1 , further comprising moving the screw in a downstream direction in the barrel to inject the shot into the mold.9. The method of claim 1 , wherein the article has a void volume of at least 10%.10. ...

MANUFACTURING PROCESS AND COMPOSITION FOR FOAMED PVC-P ROCK SHIELDS

A plasticized PVC formulation for foam extrusion including polyvinyl chloride, at least one plasticizer, at least one nucleating agent and a chemical blowing agent, wherein the plasticized PVC formulation is a dry blend containing 0.5 to 5% by weight of one or more nucleating agents and 0.1 to 3% by weight of the chemical blowing agent, wherein the blowing agent is sodium bicarbonate and the nucleating agent is talcum, and a foam extrusion method using said formulation. The extruded plasticized PVC foam is particularly suitable for rock shield pads used for pipeline protection. The foams are lightweight and require less consumption of materials with comparable properties to corresponding solid articles. 1. A non-woven mat that is suitable for use as a rockshield pad to protect a pipeline , the nonwoven mat being formed from a plurality of foamed PVC strands that are fused together , wherein each of the plurality of strands consists of a plasticized PVC formulation.2. The non-woven mat according to claim 1 , wherein the mat exhibits improved rock drop impact properties as compared to a like nonwoven mat formed from a plurality of unfoamed PVC strands.3. The non-woven mat according to claim 1 , wherein the non-woven mat exhibits no holidays at 4 inch rocks when tested according to ASTM G13-89 as modified to accommodate the rockshield pad.4. A method of protecting a pipeline claim 1 , comprising arranging the non-woven mat according to on the pipeline so that the pipeline is protected from rock impacts.5. The non-woven mat according to claim 1 , wherein the plasticized PVC formulation comprises from 30 to 60 percent by weight of PVC and from 20 to 40 percent by weight of plasticizer.6. The non-woven mat according to claim 1 , wherein the plasticized PVC formulation comprises from 40 to 51 percent by weight of PVC and from 26 to 31 percent by weight of plasticizer.7. A non-woven mat comprising a plurality of foamed PVC strands that are fused together claim 1 , wherein ...

FOAMED POLYURETHANE POLYMERS FOR THE REGENERATION OF CONNECTIVE TISSUE

The present invention relates to a method of synthesis and the use of foamed, cross-linked polyurethane polymers, as a three-dimensional support called a “scaffold” for cell cultures in vitro and for in vivo implantation for the regeneration of connective tissues such as adipose tissue, osteochondral tissue and bone tissue. In particular, the invention relates to a method of preparing polymers or foamed polyurethane co polymers, having improved , which involves the use of two types of catalyst, one for the cross-linking reaction and one for the foaming reaction and the use of at least one polar aprotic high-boiling solvent. Said method comprises the following steps in sequence: a) providing a solution of a polyol or a mixture of polyols in a solvent or mixture of solvents; b) heating the solution in step a) to a temperature higher than the softening temperature of the polymer precursors; c) optionally adding an organic or inorganic filler material; d) adding to the mixture in step c) an aliphatic poly-isocyanate or a mixture of poly-aliphatic isocyanates; e) adding to the mixture in step (d)) a porogenic additive; f) adding to the mixture in step e) simultaneously a cross-linking catalyst of polyols with poly-isocyanates and a foaming catalyst to form a foamed polyurethane polymer or co-polymer; g) isolating the foamed polyurethane polymer or co-polymer produced in step f). 1hydrophilia. A method for the preparation of polymer or co-polymer polyurethane foams with improved , which involves the use of a catalyst for the cross-linking reaction and a catalyst for the foaming reaction , comprising the following steps in sequence:a) providing a solution of a polyol or a mixture of polyols in a solvent or mixture of solvents, in which the solvent is a high-boiling solvent having a boiling point of at least 15° C. higher than the softening temperature of the polyols used;b) heating the solution in step a) to a temperature higher than the softening temperature of said ...

POLYMERIC MATERIAL FOR AN INSULATED CONTAINER

A formulation includes a base resin, a nucleating agent, and a blowing agent. The formulation can be used to form a container. 1. A polymeric formulation comprisingabout 50-99.9 wt % of a base resin,up to about 10 wt % of a slip agent,up to about 10 wt % of a chemical blowing agent, andabout 0.5-10 wt % of a nucleating agent.2. (canceled)3. The polymeric formulation of claim 1 , wherein the base resin is about 95 to 98 wt %.4. (canceled)5. The polymeric formulation of claim 3 , wherein the base resin is about 96 wt % to about 97 wt %.6. The polymeric formulation of any of claim 1 , wherein the base resin comprises a secondary base resin.7. The polymeric formulation of claim 6 , wherein the secondary base resin is up to about 50 wt %.8. The polymeric formulation of claim 6 , wherein the secondary base resin is up to about 10 wt %.911-. (canceled)12. The polymeric formulation of claim 8 , wherein the secondary base resin is a polypropylene resin.1315-. (canceled)16. The polymeric formulation of claim 1 , wherein the slip agent is about 1 to 3 wt %.17. (canceled)18. The polymeric formulation of further comprising up to about 10 wt % of a colorant.19. The polymeric formulation of claim 18 , wherein the colorant is up to about 5 wt %.20. (canceled)21. The polymeric formulation of claim 19 , wherein the colorant is about 0.5 to 2 wt %.2223-. (canceled)24. The polymeric formulation of claim 1 , wherein the nucleating agent is about 0.5 to 5 wt %.2526-. (canceled)27. The polymeric formulation of claim 24 , wherein the chemical blowing agent is about 0.1 to 2 wt %.28. (canceled)29. The polymeric formulation of claim 27 , wherein the chemical blowing agent is about 0.1 wt %.3034-. (canceled)35. The polymeric formulation of claim 1 , wherein the nucleating agent is selected from the group consisting of a chemical nucleating agent claim 1 , a physical nucleating agent claim 1 , and a combination of a chemical nucleating agent and a physical nucleating agent.36. The polymeric ...

LIQUID MODIFIER AS CARRIER SYSTEM FOR CFAS IN FOAMED POLYSTYRENES

The invention relates to a liquid formulation for foaming a thermoplastic polystyrene, said formulation comprising 1. A liquid formulation for foaming a thermoplastic polystyrene , said formulation comprisinga) 25-90 wt. % of a liquid carrier; andb) at least one endothermic chemical blowing agent selected from the group consisting of tricarboxylic acids, salts of tricarboxylic acids and esters of tricarboxylic acids.2. The formulation as claimed in claim 1 , wherein the formulation is a dispersion and wherein the endothermic chemical blowing agent is dispersed in the liquid carrier.3. The formulation as claimed in claim 1 , wherein the chemical blowing agent is selected from the group consisting of succinic acid claim 1 , succinic acid salts claim 1 , succinic acid esters claim 1 , adipic acid claim 1 , adipic acid salts claim 1 , adipic acid esters claim 1 , phthalic acid claim 1 , phthalic acid salts claim 1 , phthalic acid esters claim 1 , citric acid claim 1 , citric acid salts and citric acid esters.4. The formulation as claimed in claim 1 , wherein the chemical blowing agent is selected from the group consisting of citric acid claim 1 , citric acid salts and citric acid esters.5. The formulation as claimed in claim 1 , wherein the liquid carrier comprises an aqueous medium claim 1 , an organic solvent-based medium claim 1 , an oil-based medium or a combination thereof.6. The formulation as claimed in claim 1 , wherein the liquid carrier comprises a vegetable oil claim 1 , a mineral oil claim 1 , an acetylated monoglyceride claim 1 , a sorbitan oleate claim 1 , an ethoxylated sorbitan oleate or a mixture thereof.7. The formulation as claimed in claim 1 , further comprising customary additives selected from the group consisting of colorants claim 1 , stabilizers claim 1 , antioxidants claim 1 , antibacterial agents claim 1 , neutralizers claim 1 , antistatic agents claim 1 , antiblocking agents claim 1 , optical brighteners claim 1 , heavy metal inactivation ...

SUPER ABSORBENT RESIN

The present invention relates to a super absorbent resin, and the super absorbent resin can exhibit a fast absorption rate and high gel strength even in a partially swollen state through the size optimization of partially swollen gel particles. Therefore, the use of the super absorbent resin can effectively prevent a rewetting phenomenon. 1. A superabsorbent polymer having an average particle size of 300 μm to 600 μm , wherein a gel , which is obtained by swelling 1 g of the superabsorbent polymer in 20 g of 0.9% by weight of a sodium chloride aqueous solution for 10 minutes , has an average particle size of 600 μm to 1000 μm.2. The superabsorbent polymer of claim 1 , wherein a particle having a particle size of 300 μm to 600 μm is 45% by weight to 85% by weight.3. The superabsorbent polymer of claim 1 , wherein a particle having a particle size of more than 0 μm and 300 μm or less is 15% by weight to 25% by weight.4. The superabsorbent polymer of claim 1 , wherein a fraction of a gel having a particle size of more than 0 μm and 600 μm or less is 5% by weight to 30% by weight.5. The superabsorbent polymer of claim 1 , wherein centrifuge retention capacity in a physiological saline solution is 28 g/g to 35 g/g claim 1 , absorbency under load of 0.9 psi in the physiological saline solution is 14 g/g to 22 g/g claim 1 , free swell gel bed permeability in the physiological saline solution is 40 darcy to 100 darcy claim 1 , and a vortex time is 20 seconds to 60 seconds.6. A preparation method comprising the steps of: performing crosslinking polymerization of a monomer mixture in the presence of an internal crosslinking agent to form a water-containing gel polymer claim 1 , the monomer mixture including water-soluble ethylene-based unsaturated monomers having acidic groups which are at least partially neutralized claim 1 , a foaming agent claim 1 , a foam promoter claim 1 , and a surfactant; drying claim 1 , pulverizing claim 1 , and size-sorting the water-containing gel ...

Super Absorbent Polymer

A method of preparing super absorbent polymer includes carrying out a crosslinking polymerization of a monomer mixture comprising a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups, a forming agent, a foam-promoting agent and a silicone-based surfactant in the presence of an internal crosslinking agent to form a hydrogel polymer; drying, pulverizing and classifying the hydrogel polymer to form a base polymer powder; and further crosslinking a surface of the base polymer powder in the presence of a surface crosslinking agent to form a surface crosslinked layer. The method produces super absorbent polymer having not only an excellent absorbent capacity and an absorbency under load but also the rewetting phenomenon can be effectively prevented. 1. A method for preparing a super absorbent polymer comprising:carrying out a crosslinking polymerization of a monomer mixture comprising a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups, a forming agent, a foam-promoting agent and a silicone-based surfactant in the presence of an internal crosslinking agent to form a hydrogel polymer;drying, pulverizing and classifying the hydrogel polymer to form a base polymer powder; andfurther crosslinking a surface of the base polymer powder in the presence of a surface crosslinking agent to form a surface crosslinked layer.2. The method according to claim 1 , wherein the foaming agent includes at least one selected from the group consisting of magnesium carbonate claim 1 , calcium carbonate claim 1 , sodium bicarbonate claim 1 , sodium carbonate claim 1 , potassium bicarbonate and potassium carbonate.3. The method according to claim 1 , wherein the silicon-based surfactant is polysiloxane containing polyether side chains.4. The method according to claim 5 , wherein the foam-promoting agent is an aluminum salt of inorganic acids and/or an aluminum salt of organic acids.5. The method ...

COMPOSITIONS AND METHODS FOR USE IN THE PREPARATION OF HYDROPHOBIC SURFACES

Polymer films having a surface with increased hydrophobicity or enhanced hydrophobicity or improved hydrophobicity or super-hydrophobicity; composite structures such as multilayer polymer sheets comprising the polymer films; methods and systems of making such polymer films; polymer blends from which to make such polymer films; masterbatches or masterbatch compositions useful for making such polymer blends; as well as methods and systems for making such polymer blends and such masterbatches or masterbatch compositions. 2. The masterbatch composition of claim 1 ,wherein the masterbatch is in the form of a plurality of particles suitable for feeding to an extruder.3. The masterbatch composition of claim 1 ,where said polyolefin component makes up between 15% and 86% weight percent of the masterbatch composition.4. The masterbatch composition of claim 1 ,wherein said fluoropolymer component makes up between 10% and 15% weight percent of the masterbatch composition.5. The masterbatch composition of claim 1 ,wherein said blowing agent component makes up between 4% and 70% weight percent of the masterbatch composition.6. The masterbatch composition of claim 1 ,wherein said foamable polyolefin component, said fluoropolymer component, and said blowing agent component together comprise not less than 90% by weight of the masterbatch composition.7. The masterbatch composition of claim 1 ,wherein said polyolefin component is at least 90% by weight of a foamable polyolefin selected from the group consisting of: polyethylene (PE), polypropylene (PP), and a combination thereof.8. The masterbatch composition of claim 1 ,wherein at least one fluoropolymer making up said fluoropolymer component is selected from the group consisting of: a fluoro homopolymer, a fluoro copolymer, a fluoro-elastomer, an acrylic-modified fluoropolymer, and a combination of two or more of said materials.9. The masterbatch composition of claim 8 ,wherein said fluoropolymer component is at least 50% by weight ...

METHOD OF FORMING A POLYURETHANE FOAM ARTICLE

A method of forming a polyurethane foam article includes the step of forming a resin composition. The resin composition includes a polyol component, an amine catalyst, and a blowing component. The blowing component includes a hydrofluoroolefin and formic acid. The method also includes the steps of combining the resin composition, a recycled resin composition, and an isocyanate component to form a reaction mixture and discharging the reaction mixture to form the polyurethane foam article. 1. A method of forming a polyurethane foam article , said method comprising the steps of: (i) a polyol component;', '(ii) an amine catalyst; and', (a) a hydrofluoroolefin, and', '(b) formic acid;, '(iii) a blowing component comprising], '(A) forming a resin composition comprising(B) combining the resin composition, a recycled resin composition, and an isocyanate component to form a reaction mixture; and(C) discharging the reaction mixture to form the polyurethane foam article.2. A method as set forth in further comprising the step of forming the recycled resin composition greater than about 2 months prior to the step of forming the resin composition.3. A method as set forth in wherein the step of combining is further defined as first combining the resin composition and the recycled resin composition to form a resin composition mixture claim 1 , and then combining the resin composition mixture and the isocyanate component to form the reaction mixture.4. A method as set forth in wherein the resin composition mixture has a viscosity of less than about 900 cps at 25° C.5. A method as set forth in wherein the resin composition mixture has a shelf life of greater than about 6 months.6. A method as set forth in wherein the step of combining the resin composition mixture and the isocyanate component to form the reaction mixture is conducted in a static mix head.7. A method as set forth in wherein the recycled resin composition is present in the resin composition mixture in an amount of from ...

Method for producing polyethylene-based resin extruded foam sheet, polyethylene-based resin extruded foam sheet, and plate interleaf sheet using the same for glass sheets

Provided is a method for producing a polyethylene-based resin extruded foam sheet by extruding and foaming a foamable molten resin composition formed by kneading a mixture containing a low-density polyethylene, a physical blowing agent, and an antistatic agent, wherein the foam sheet has a thickness in a range of from 0.05 to 0.5 mm, and the antistatic agent is a polymeric antistatic agent having a melting point whose different from the melting point of the low-density polyethylene is in a range of from −10 to +10° C., and having a melt flow rate of 10 g/10 min or more. This method enables a novel polyethylene-based resin extruded foam sheet to be obtained that is of high quality such that formation of a small hole or a through-hole has been reduced or eliminated, and has both excellent strength and a shock-absorbing property despite a very small thickness even in medium- or long-term continuous production, and besides, exhibits a sufficient antistatic property, thus suitable as a glass plate interleaf sheet.

Compositions Comprising Propylene-Based Elastomers, Foamed Layers Made Therefrom, and Methods of Making The Same

The present disclosure relates to compositions comprising a propylene-based elastomer, a branched polymer, and a blowing agent. The present disclosure also relates to foamed layers and articles made from such layers. 1. A composition comprising:{'sub': 4', '20, 'a propylene-based elastomer comprising propylene and from 3 wt % to 35 wt % by weight ethylene and/or Cto Calpha-olefin derived units based upon the weight of the propylene-based elastomer, the elastomer having a heat of fusion, as determined by DSC, of less than or equal to 75 J/g, and a melting point, as determined by DSC, of less than or equal to 110° C.;'}a branched polymer having a branching index of less than 0.95; anda blowing agent.2. The composition of claim 1 , wherein the propylene-based elastomer comprises from 5 wt % to 25 wt % ethylene-derived units based upon weight of the propylene-based elastomer.3. The composition of claim 1 , wherein the propylene-based elastomer has a melt flow rate claim 1 , as determined by ASTM D1238 at 2.16 kg claim 1 , 230° C. claim 1 , of from 0.2 g/10 min to 50 g/10 min.4. The composition of claim 1 , wherein the propylene-based elastomer has a density of from 0.855 g/cmto 0.900 g/cm.5. The composition of claim 1 , wherein the propylene-based elastomer has a melt strength of less than 5 cN.6. The composition of claim 1 , wherein the propylene-based elastomer is present in an amount of from 30 wt % to 99.5 wt % based upon the weight of the composition.7. The composition of claim 1 , wherein the branched polymer is an ethylene polymer.8. The composition of claim 7 , wherein the ethylene polymer is at least one of polyethylene claim 7 , ethylene vinyl acetate claim 7 , and ethyl methyl acrylate.9. The composition of claim 1 , wherein the branched polymer has a melt index as determined by ASTM 1238 (190° C. claim 1 , 2.16 kg) claim 1 , of from 0.2 g/10 min to 20 g/10 min.10. The composition of claim 1 , wherein the branched polymer has a branching index (g′) of less ...

Three-dimensional printing with pore-promoting agents

The present disclosure describes multi-fluid kits for three-dimensional printing, materials kits for three-dimensional printing, and methods of making three-dimensional printed articles. In one example, a multi-fluid kit for three-dimensional printing can include a fusing agent and a pore-promoting agent. The fusing agent can include water and a radiation absorber. The radiation absorber can absorb radiation energy and convert the radiation energy to heat. The pore-promoting agent can include water and a water-soluble pore-promoting compound. The pore-promoting compound can chemically react at an elevated temperature to generate a gas.

Super Absorbent Polymer And Method For Producing Same

A super absorbent polymer according to the present invention has an excellent discoloration resistance property even under high temperature/high humidity conditions, while maintaining excellent absorption performance, and is preferably used for hygienic materials such as diapers, and thus can exhibit excellent performance. 1. A super absorbent polymer comprising:a base polymer powder comprising a first cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; anda surface cross-linked layer formed on the base polymer powder and comprising a second cross-linked polymer in which the first cross-linked polymer is further cross-linked via a surface crosslinking agent,wherein the super absorbent polymer has:a 15-min gel-AUL at 0.3 psi of 13 g/g or more,an absorbency under load (AUL) of 18 g/g or more,a gel bed permeability (GBP) of 30 darcy or more, anda vortex time of 45 seconds or less as measured according to the measurement method of Vortex.2. The super absorbent polymer of claim 1 , wherein the super absorbent polymer has a 15-min gel-AUL at 0.6 psi of 12 g/g or more.3. The super absorbent polymer of claim 1 , wherein the super absorbent polymer has a centrifuge retention capacity (CRC) of 29 g/g or more.4. The super absorbent polymer of claim 1 , wherein the super absorbent polymer has an average particle diameter of 300 μm to 600 μm.5. The super absorbent polymer of claim 1 , wherein in the super absorbent polymer claim 1 , a super absorbent polymer having a particle diameter of 300 μm to 600 μm is contained in an amount of 45 to 85% by weight.6. A method for producing a super absorbent polymer claim 1 , comprising the steps of:crosslinking a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups in the presence of an internal crosslinking agent, a foaming agent and a surfactant to form a hydrogel polymer containing a first crosslinked polymer;coarsely ...

FOAMABLE POLYOLEFIN COMPOSITION PROVIDING INCREASED FLEXIBILITY

The invention relates to a foamable polymer composition comprising a polyolefin polymer which polyolefin polymer does not bear silane moieties and comprises 20 to 99.99 wt. % linear low density polyethylene, and a blowing agent in an amount of 0.01 to 3 wt. % based on the total foamable polymer composition, wherein the blowing agent consists of citric acid and/or derivatives of citric acid or mixtures thereof. Further the invention relates to a foamable polymer composition comprising a polyolefin polymer, and a blowing agent in an amount of 0.01 to 3 wt. % based on the total foamable polymer composition, wherein the blowing agent consists of expandable polymeric microspheres, and the composition does not comprise fluororesin. Further the invention relates to a foamed polymer composition obtained by foaming this foamable polymer composition. Further the invention relates to the use of the foamable composition or the foamed polymer composition for a layer of a cable and a cable comprising at least one layer which comprises the

POLYOL PREMIXES, THERMALLY INSULATING RIGID POLYURETHANE FOAMS AND METHODS FOR THEIR PRODUCTION

Polyol premixes and thermally insulating rigid polyurethane foams, such as those that can be used as a thermal insulation medium in the construction of refrigerated storage devices, are disclosed. A polymer polyol having a OH number of greater than 260 mg KOH/g is utilized. The resulting polyurethane foams can exhibit improved thermal insulation properties without sacrificing other important physical and processing properties. 1. A polyol premix comprising:(a) a polyol composition comprising a polymer polyol having an OH number of greater than 260 mg KOH/g;(b) a catalyst;(c) a physical blowing agent composition comprising at least 50% by weight, based on the total weight of the physical blowing agent composition, of a hydrocarbon; and(d) a carbon dioxide generating chemical blowing agent.2. The polyol premix of claim 1 , wherein the polymer polyol comprises polymer particles comprising a reaction product of a reaction mixture comprising:(i) a base polyol;(ii) an ethylenically unsaturated compound,optionally(iii) a preformed stabilizer, and(iv) a free radical initiator.3. The polyol premix of claim 2 , wherein the base polyol comprising a polyether polyol having a functionality of 2 to 6 and an OH number of at least 300 mg KOH/g.4. The polyol premix of claim 2 , wherein the content of ethylene oxide units in the base polyol claim 2 , based on the total weight of the base polyol claim 2 , is no more than 20% by weight.5. The polyol premix of claim 2 , wherein the ethylenically unsaturated compound comprises styrene and acrylonitrile at a weight ratio of styrene to acrylonitrile (S:AN) of 80:20 to 20:80.6. The polyol premix of claim 1 , wherein the polymer polyol has an OH number of at least 280 mg KOH/g.7. The polyol premix of claim 1 , wherein the polymer polyol is present in an amount of at least 30% by weight claim 1 , based on the total weight of the polyol composition.8. The polyol premix of claim 1 , wherein the polyol composition comprises an aromatic amine- ...

THERMOPLASTIC POLYMERS

Thermoplastic polymers, for example fluoropolymers, are foamed by use of a solid formulation comprising thermoplastic polymer and manganese oxalate. 1. A formulation for use in preparing a foamed thermoplastic polymer , said formulation comprising a thermoplastic polymer and an oxalate compound.2. (canceled)3. A formulation according to claim 1 , wherein said oxalate compound comprises manganese oxalate.4. A formulation according to claim 3 , wherein said formulation includes less than 0.5 wt % water.5. A formulation according to claim 3 , which includes 0.2 to 30 parts by weight (pbw) of said oxalate compound and 70 to 99.8 pbw of said thermoplastic polymer.6. A formulation according to claim 3 , which includes a masterbatch which includes 1 pbw to 30 pbw of said oxalate compound and 70 to 99 pbw of said thermoplastic polymer.7. A formulation according to claim 3 , wherein said formulation is a solid having a melting point of at least 250° C.8. A formulation according to claim 3 , wherein said formulation is in the form of pellets which are homogenous claim 3 , wherein said pellets include 1 to 11 pbw total oxalate compounds claim 3 , 0 to 11 pbw total nucleators and 100 pbw in total of thermoplastic polymers.9. (canceled)10. A formulation according to wherein the sum of the pbw of all blowing agents in the pellets is 10 pbw or less based on 100 pbw in total of thermoplastic polymers.11. A formulation according to claim 3 , wherein said pellets include 1 to 10 wt % of said oxalate compound claim 3 , 0 to 10 wt % of said nucleator and 89 to 99 wt % of said thermoplastic polymer.12. A formulation according to claim 3 , wherein claim 3 , in said pellets claim 3 , the sum of the wt % of manganese oxalate and thermoplastic polymer(s) is at least 98 wt %.13. (canceled)14. A formulation according to claim 3 , wherein said thermoplastic polymer is a fluoropolymer.15. A method of preparing a foamed thermoplastic polymer which comprises subjecting a mixture comprising an ...

POLYOLEFIN-BASED COMPOSITION FOR A LID AND METHODS OF MAKING AND USING

Aspects of the present disclosure relate to a polyolefin composition and processes suitable for use in forming a lid for a hot food or beverage container that has a stiffness comparable to a similar lid made using high impact polystyrene and a density less than water at 23° C. 1. A lid for a food or beverage container made from a sheet comprising at least one polyolefin with at least one filler , and having a plurality of expanded cells providing the lid with a density of less than 1 g/cmat 23° C.2. The lid of wherein the at least one polyolefin is selected from the group consisting of polypropylene homopolymers claim 1 , polypropylene impact copolymers claim 1 , ethylene-propylene copolymers claim 1 , high density polyethylene claim 1 , and combinations thereof.3. The lid of wherein the polyolefin comprises a polypropylene having one of:a flexural modulus of at least about 290,000 psi;a heat deflection temperature of at least 95° C.; ora combination of a flexural modulus of at least about 290,000 psi and a heat deflection temperature of at least 95° C.4. The lid of wherein the at least one filler is selected from talc claim 1 , calcium carbonate claim 1 , mica claim 1 , wollastonite claim 1 , wood fiber claim 1 , paper powder claim 1 , cellulose fiber claim 1 , or combinations thereof.5. The lid of wherein a total amount of the at least one filler is about 12 wt. % or greater.6. The lid of wherein a stiffness of the lid is comparable to a similar lid made from unexpanded high impact polystyrene claim 1 , and wherein stiffness is based on a weight required to induce a 0.25 inch deflection of the lid when the lid is placed on a cup holding liquid at 200° F.7. The lid of wherein the plurality of expanded cells have an average cell diameter in the range of about 0.01 to 0.15 mm.8. The lid of comprising at least one of:{'sup': '3', 'a density in the range of about 0.900 to 0.999 g/cm;'}a density that allows the lid to float in water;a shrinkage rate of about 1.3 to 1.5% ...

Thermoplastic polymers

Thermoplastic polymers, for example fluoropolymers, are foamed by use of a solid formulation comprising thermoplastic polymer and an oxalate compound which includes a moiety selected from potassium, calcium, titanium, iron, cobalt, nickel, copper, zinc, zirconium and barium.

PRODUCTION OF POLYISOCYANURATE FOAM PANELS

The present invention discloses the production of panels by a discontinuous process. The panels are produced by injecting a polyisocyanurate foam forming composition into the mold cavity at reduced pressure. The combination of certain polyisocyanurate foam forming formulation and the reduced pressure in the mold cavity allows production of and resulting sandwich panels in a discontinuous process where the produced panels are characterized by improved fire resistance. 2. A method of making a sandwich panel having two exterior shells and an intermediate polyisocyanurate (PIR) structural foam core claim 1 , comprising undertaking the method of claim 1 , wherein said closed mold cavity is defined by the two exterior shells and an annular frame.3. A method according to claim 1 , wherein the aromatic polyester polyol is at least 50 weight percent of the total amount of polyol.4. A method according to claim 1 , wherein the reaction mixture has an isocyanate index of greater than 350.5. A method according to claim 1 , wherein the mold cavity absolute pressure is from 800 to 950 mbar.6. A method according to claim 1 , wherein the blowing agent component comprises a physical and chemical blowing agent.7. A method according to claim 6 , wherein the chemical blowing agent is water claim 6 , formic acid or a combination thereof.8. The method according to claim 6 , wherein the physical blowing agent is pentane.9. A method according to claim 1 , wherein the foam has an applied density of 30 to 75 kg/m.10. A method according to claim 1 , wherein the reaction mixture additionally comprises a silicone surfactant.11. A method according to claim 1 , wherein the flame retardant is a halogen free flame retardant. Polyisocyanurate foams are in general prepared by reacting a stoichiometric excess of polyisocyanate with a polyol or polyol mixture in the presence of a catalyst, a blowing agent, and generally other optional additives such as surfactants and the like. Polyisocyanurate foams ...

ORGANOMINERAL SOLID AND FOAMED MATERIAL

The present invention relates to a two-part composition suitable for use in the preparation of a foamed material wherein the first part comprises a source of metal ions and water and the second part comprises an isocyanate, wherein the ratio of NCO isocyanate to water to metal ions is 1 mol:3.5 to 5.5 mol:95 to 650 mmol. Also forming part of the invention is a foamed isocyanate material, a method of preparing the material and controlling foam formation and uses of the composition and material. 120.-. (canceled)21. A two-part composition suitable for use in the preparation of a foamed material wherein the first part comprises a source of metal ions and water and the second part comprises an isocyanate , wherein the ratio of NCO isocyanate to water to metal ions is 1 mol:3.5 to 5.5 mol:95 to 650 mmol , wherein the source of metal ions is a water soluble metal salt selected from the group consisting of phosphate bromide , pyrophosphate , polyphosphate , bicarbonate , carbonate , chloride , sulfate , nitrate , nitrite , and mixtures of two or more of such salts.22. The composition as defined in claim 21 , wherein the metal is an alkali metal or an alkaline earth metal.23. A composition as defined in claim 22 , wherein the metal is selected from the group consisting of lithium claim 22 , sodium claim 22 , potassium and magnesium.24. The composition as defined in claim 23 , wherein the water soluble metal salt is selected from the group consisting of potassium phosphate claim 23 , potassium polyphosphate claim 23 , potassium bicarbonate claim 23 , potassium carbonate claim 23 , potassium chloride claim 23 , potassium sulfate claim 23 , potassium nitrate claim 23 , sodium bicarbonate claim 23 , sodium carbonate claim 23 , sodium sulfate claim 23 , sodium chloride and/or sodium nitrite.25. A composition as defined in claim 21 , wherein the composition comprises from 95 to 450 mmol of the metal ion per mol of NCO in the isocyanate.26. A composition as defined in claim 21 , ...

FOAMABLE, MULTICOMPONENT COMPOSITION WHICH FORMS AN INSULATION LAYER AND USE OF SAID COMPOSITION

A foamable, insulating-layer-forming multi-component composition has at least one alkyoxysilane-functional polymer, at least one insulating-layer-forming fire-protection additive, a blowing-agent mixture, and a cross-linking agent. The at least one alkoxysilane-functional polymer contains, as terminal groups and/or as side groups along the polymer chain, alkoxy-functional silane groups of a formula —Si(R)(OR). In this formula, Rstands for a linear or branched C-Calkyl moiety, Rfor a linear or branched C-alkyl moiety and m for an integer from 0 to 2. The composition can be a foam-in-place foam or can be used for the manufacture of molded blocks. 1. A foamable , insulating-layer-forming multi-component composition , comprising at least one alkoxysilane-functional polymer , at least one insulating-layer-forming fire-protection additive , a blowing-agent mixture and a cross-linking agent , {'br': None, 'sup': 1', '2, 'sub': m', '3-m, '—Si(R)(OR)\u2003\u2003(I),'}, 'wherein the at least one alkoxysilane-functional polymer comprises, as a terminal group and/or as a side group along a chain of the polymer, an alkoxy-functional silane group of the general formula (I)'}{'sup': 1', '2, 'sub': 1', '16', '1', '6, 'wherein Ris a linear or branched C-Calkyl moiety, Ris a linear or branched C-Calkyl moiety and m is an integer from 0 to 2,'}wherein individual ingredients of the blowing-agent mixture are separated from one another to inhibit reaction prior to mixing, and the cross-linking agent is separated from the alkoxysilane-functional polymer to inhibit reaction prior to mixing.2. The composition according to claim 1 , wherein the blowing-agent mixture comprises compounds that are capable of reacting with one another claim 1 , if mixed claim 1 , to form carbon dioxide (CO) claim 1 , hydrogen (H) or oxygen (O).3. The composition according to claim 2 , wherein the blowing-agent mixture comprises an acid and a compound that is reactive with the acid to form carbon dioxide.4. The ...

FORMAMIDE-FREE FOAM AND METHOD FOR PREPARING THE SAME

A formamide-free foam prepared by using sodium bicarbonate as a foaming agent and electron-beam irradiation for crosslinking is revealed. After copolymer and sodium bicarbonate being mixed evenly, the mixture is heated and compounded to form an intermediate. Then the intermediate is pressed and injected to form a sheet. Next the intermediate is irradiated by an electron-beam to form crosslinks therein. At last the intermediate is heated and foamed to get a formamide-free foam. Compared with foam produced by using azodicarbonamide as the foaming agent available now, formamide-free foam not only causes no harm to human health but also gives no negative effect to the environment during recycling. Thus the formamide-free foam is really environmentally friendly. 1. A method for preparing a formamide-free foam comprising the steps of:compounding ethylene vinyl alkanoate copolymer with a weight percent of 50%-95% and a foaming agent with a weight percent of 5%-50% to get an intermediate; wherein the foaming agent is sodium bicarbonate;pressing and injecting the intermediate;irradiating the intermediate by an electron beam to carry out crosslinking of the intermediate; andheating and foaming the intermediate to get the formamide-free foam.2. The method as claimed in claim 1 , wherein the formamide-free foam further includes a polyolefin copolymer;wherein a weight percent of a mixture of the ethylene vinyl alkanoate copolymer and the sodium bicarbonate is ranging from 40% to 60% while a weight percent of the polyolefin copolymer is ranging from 40% to 60%.3. The method as claimed in claim 1 , wherein the ethylene vinyl alkanoate copolymer is ethylene vinyl acetate (EVA) copolymer.4. The method as claimed in claim 2 , wherein the polyolefin copolymer includes polyethylene (PE) copolymer and polypropylene (PP) copolymer.5. The method as claimed in claim 1 , wherein compounding temperature is ranging from 80° C. to 130° C. in the step of compounding.6. The method as claimed in ...

COMPOSITIONS FOR COMPOUNDING, EXTRUSION AND MELT PROCESSING OF FOAMABLE AND CELLULAR FLUOROPOLYMERS

The present invention relates generally to the use of talc as a chemical foaming agent in perfluoropolymers to form foamable and foamed compositions. For example, in one aspect, a foamable composition is disclosed, which comprises (i) one or more base perfluoropolymers comprising at least 50 percent by weight of the composition, and (ii) talc blended with the one or more base perfluoropolymers, where the talc comprises 3 percent to about 15 percent by weight of the composition. Each of the perfluoropolymers is selected from the group consisting of tetrafluoroethylene/perfluoromethylvinyl ether copolymer (MFA), hexafluoropropylene/tetrafluoroethylene copolymer (FEP) and perfluoroalkoxy (PFA) and any blend thereof, where hydrogen-containing fluoropolymers are absent from the composition. The one or more base perfluoropolymers are melt-processable at one or more elevated processing temperatures of at least about 600° F. at which the talc functions as a chemical foaming agent for extrusion or mold processing of the composition into a foamed article having uniform cell structures. 120-. (canceled)21. A method for manufacturing a foamed article comprising:heating a composition comprising a melt-processable perfluoropolymer and talc to a processing temperature of at least 600° F. at which said talc functions as a chemical foaming agent, thereby causing the foaming of said composition at a foaming rate in a range from 20% to 50% so as to form a foamed article;wherein said melt-processable perfluoroploymer is selected from the group consisting of tetrafluoroethylene/perfluoromethylvinyl ether copolymer (MFA), hexafluoropropylene/tetrafluoroethylene copolymer (FEP), perfluoroalkoxy (PFA) and any blend thereof, andwherein said talc is the only foaming agent in said composition and wherein said foaming is achieved without gas injection.22. The method of claim 21 , wherein said processing temperature is in a range of about 600° F. to about 660° F.23. The method of claim 21 , ...

Preparation method and application of reactive polyurethane flame retardant

The polyurethane flame retardant is prepared by compounding poly(diphosphophosphazene) (PDPP) and derivatives thereof, poly(diphosphate phosphazene) (MPDPP) (where M=Mg 2+ , Ca 2+ , transition metal ions, rare earth ions and the like) and poly(diphosphonic phosphazene). Since a phosphate group in the PDPP and an unreacted phosphate group in the MPDPP in the compound and an unreacted hydroxyl in the phosphate group may react with isocyanate, the flame retardant is a reactive flame retardant. Due to the reaction between the flame retardant and the isocyanate, the flame retardant is uniformly distributed in polyurethane and has a better flame-retardant effect. The flame retardant contains multiple flame-retardant components, namely polyphosphazene group, phosphate ester and phosphate salt. Due to the synergistic effect, the flame retardant has good flame-retardant properties, and can be used for various polyurethane materials.

PROCESS FOR PRODUCING COMPOSITE ELEMENTS

The invention relates to an improved process for producing composite elements comprising at least one outer layer and at least one isocyanate-based rigid foam layer by means of a fixed applicator apparatus and in which the flowable starting material comprises the following components: A) at least one polyisocyanate, B) at least one compound which reacts with isocyanate groups to form urethane, C) at least one blowing agent, D) catalysts comprising at least one compound D1) which catalyzes isocyanurate formation and at least one compound D2) which catalyzes polyurethane formation, comprising at least one amino group, and E) optionally auxiliaries and additives, where the manner of use of component A) and of component B) is such that the isocyanate index is at least 180, and where the ratio by weight of the compound D2) to the compound D1) is from 0.75 to 8. 2. The process according to claim 1 , wherein compound D1) is selected from the group consisting of an alkali metal carboxylate claim 1 , an alkaline earth metal carboxylate and an ammonium carboxylate.3. The process according to claim 1 , wherein compound D1) is a carboxylate of an alkali metal.4. The process according to claim 3 , wherein the carboxylate is selected from the group consisting of formate claim 3 , ethylhexanoate claim 3 , and acetate.5. The process according to claim 4 , wherein compound D1 is an alkali metal acetate.6. The process according to claim 1 , wherein compound D2) is selected from the group consisting of an amidine claim 1 , a tertiary amine claim 1 , and an alkanolamine.8. The process according to claim 7 , wherein Y═NRand X═NR or O claim 7 , and R═CH.9. The process according to claim 7 , wherein a the proportion of the compound D2-T) claim 7 , based on the total weight of component D2) claim 7 , is at least 50%.10. The process according to claim 1 , wherein the ratio by weight of component D2) to component D1) is at least 1.11. The process according to claim 1 , wherein the ratio by ...

Vehicle tyre, the tread of which comprises a heat-expandable rubber composition

A vehicle tyre includes a tread formed of a rubber composition that is heat-expandable when unvulcanized, and expanded when vulcanized. When unvulcanized, the composition includes from 50 to 100 phr of a copolymer based on styrene and butadiene; optionally from 0 to 50 phr of another diene elastomer, such as a polybutadiene or a natural rubber; more than 50 phr of a reinforcing filler, such as silica and/or carbon black; between 5 and 25 phr of a sodium- or potassium-including carbonate or hydrogencarbonate; and between 2 and 15 phr of a carboxylic acid having a melting point between 60° C. and 220° C., such as citric acid. A total content of the carboxylic acid and the carbonate or the hydrogencarbonate is greater than 10 phr. Presence of the carboxylic acid and the carbonate or the hydrogencarbonate makes it possible to significantly reduce noise emitted by the tyre during running.

Process for producing a rigid polyurethane-isocyanurate foam

The invention provides a process for producing rigid polyurethane-polyisocyanurate foams using polyols having a high proportion of secondary hydroxyl end groups. The invention further relates to the rigid polyurethane-polyisocyanurate foams thus obtainable and to the use thereof in the production of composite elements from rigid polyurethane-polyisocyanurate foams and suitable outer layers. The invention further provides the composite elements thus obtainable.

COMPOSITION THAT IS SELF-FOAMING IN AN ACID MEDIUM, AND METHOD FOR PREPARING SAME

A composition that is self-foaming in an acid medium, and includes: at least one hydrophilic polymer, at least one compound capable of crosslinking the hydrophilic polymer by forming ionic bonds, at least one foaming agent, and at least one foam stabilizer agent; and to the use thereof as a drug, particularly for preventing and/or treating obesity. 116-. (canceled)17. A composition comprising:at least one hydrophilic polymer selected from polysaccharides, polysaccharide derivatives and mixtures thereof,at least one compound capable of crosslinking the hydrophilic polymer by forming ionic bonds, selected from the group consisting in the salts of divalent cations, the salts of trivalent cations and mixtures thereof,at least one foaming agent selected from salts capable of decomposing into gas and into monovalent cations, andat least one foam stabilizer.18. The composition as claimed in claim 17 , wherein the hydrophilic polymer is selected from the alginates.19. The composition as claimed in claim 17 , wherein the content by weight of hydrophilic polymer is from 10% to 99.5% claim 17 , the contents being expressed in weight of dry matter.20. The composition as claimed in claim 17 , wherein the compound capable of crosslinking the hydrophilic polymer by forming ionic bonds comprises at least one metal salt.21. The composition as claimed in claim 17 , wherein the compound capable of crosslinking the hydrophilic polymer by forming ionic bonds is selected from salts of divalent cations.22. The composition as claimed in claim 21 , wherein the compound capable of crosslinking the hydrophilic polymer by forming ionic bonds is chosen from the group consisting of calcium carbonate CaCO claim 21 , manganese carbonate MnCO claim 21 , silver carbonate AgCO claim 21 , iron carbonate FeCO claim 21 , copper carbonate CuCO claim 21 , magnesium carbonate MgCO claim 21 , hydroxyapatite Ca(PO)OHand mixtures thereof.23. The composition as claimed in claim 22 , wherein the compound ...

Polyolefin Polymers With Increased Melt Strength

A polymer composition with increased melt strength is disclosed. The polymer composition contains at least one polypropylene polymer combined with at least one melt strength modifier. The melt strength modifier can comprise a sorbitol derivative in an amount sufficient to change the melt strength characteristics and properties of the polymer. The polymer composition can be used in thermoforming processes and to produce polymer foams. The melt strength modifier can increase the melt strength of the polymer without having to induce branching in the polypropylene polymer. 1. A polymer composition with increased melt strength comprising:a polypropylene polymer blended with a melt strength modifier, the melt strength modifier being present in the polymer composition in an amount sufficient to create a penetration network when the polymer composition is heated to a molten state.2. A polymer composition as defined in claim 1 , wherein the polymer composition comprises at least 90% by weight polypropylene polymer.3. A polymer composition as defined in claim 1 , wherein the polymer composition has a viscoelastic transition temperature of at least 180° C.4. A polymer composition as defined in claim 1 , wherein the polymer composition has a strain hardening index of greater than 0.4 claim 1 , a shear thinning factor of greater than 100 claim 1 , and an elastic index of greater than 0.2.5. A polymer composition as defined in claim 1 , wherein the polypropylene polymer comprises a polypropylene homopolymer.6. A polymer composition as defined in claim 1 , wherein the polypropylene polymer comprises a polypropylene copolymer claim 1 ,7. A polymer composition as defined in claim 1 , wherein the melt strength modifier comprises a benzylidiene sorbitol derivative.8. A polymer composition as defined in claim 1 , wherein the polymer composition has a strain hardening index of greater than about 0.9.9. A polymer composition as defined in claim 1 , wherein the polymer composition has a ...

ESTERIFIED ACIDS FOR USE IN POLYMERIC MATERIALS

The present teachings contemplate a method that includes a step of providing a first amount of esterified reaction product of an acid and an epoxy-based material. The esterified reaction product may be further reacted an epoxy resin to form a polymeric epoxy. The resulting material may have a generally linear backbone, foaming and curing capability and flame retardant properties. 130-. (canceled)31. A polymer for cavity filling , cavity reinforcement , acoustic modification , adhesives , flame retardant foam , flame retardant adhesive , flame retardant thermoplastics , or films comprising:an esterified reaction product of a phosphoric acid and an epoxide, reacted in a controlled manner for avoiding gelling, the esterified reaction product having a first viscosity that is higher than the viscosity of the phosphoric acid;an epoxy resin suitable for reaction with the esterified reaction product, the epoxy resin having a second viscosity;wherein the epoxy resin is reacted with the esterified reaction product to form the polymer.32. The polymer of claim 31 , wherein the polymer is included in a material that exhibits sufficient flame retardancy to meet vertical burn and smoke density requirements as set forth in 14 C.F.R. § 25.853 and 14 C.F.R. § 25.856 (the United States Code of Federal Regulations for compartment interiors.3334-. (canceled)35. A method comprising providing a first amount of esterified reaction product of an acid and a monoepoxy in a controlled manner for avoiding gelling claim 31 , the esterified reaction product: (i) having a first viscosity that is higher than a viscosity of the acid; and (ii) including a plurality of monoesters and diesters claim 31 , wherein the diesters are present in an amount of less than 25% of the amount of monoesters as measured by NMR.36. A foamable composition comprising a first esterified acid and a second esterified acid reacted with an epoxy-based material claim 31 , wherein the composition is substantially free of any ...

SUSTAINABLE RESIDENTIAL SHEET

Described herein are surface coverings comprising a support layer; and a vinyl base layer formed from a fluid matrix comprising a virgin vinyl chloride resin, a recycled vinyl chloride resin, a plasticizer, and a blowing agent. Also described are methods of making and using same. 1. A surface covering comprising:a support layer; and a vinyl chloride resin comprising a virgin vinyl chloride resin and a recycled vinyl chloride resin;', 'a plasticizer; and', 'a blowing agent., 'a vinyl base layer formed from a fluid matrix comprising2. The surface covering of claim 1 , wherein the virgin vinyl chloride resin or the recycled vinyl chloride resin comprises a vinyl chloride homopolymer.3. The surface covering of claim 1 , wherein the virgin vinyl chloride resin or the recycled vinyl chloride resin comprises a vinyl chloride copolymer.4. The surface covering of claim 3 , wherein the vinyl chloride copolymer comprises a vinyl chloride monomer and a second monomer selected from: vinyl acetate claim 3 , a methacrylate-based monomer; and a combination thereof.5. The surface covering of claim 1 , wherein the vinyl base layer formed from a fluid matrix comprises from about 5 wt. % to about 25 wt. % of a recycled vinyl chloride resin.6. The surface covering of claim 1 , wherein the vinyl base layer formed from a fluid matrix comprises about 9.5 wt. % of a recycled vinyl chloride resin.7. The surface covering of claim 1 , wherein the vinyl base layer formed from a fluid matrix further comprises a heat stabilizer selected from a mixed metal stabilizer; an epoxy compound and a combination thereof.8. The surface covering of claim 1 , wherein the vinyl chloride resins are suspended within the plasticizer.9. The surface covering of claim 1 , wherein the virgin vinyl chloride resin and the recycled vinyl chloride resin have an average particle size of from about 1 to about 150 microns.10. The surface covering of claim 1 , wherein the ratio of vinyl chloride resin to plasticizer is from ...

FOAMING COMPOSITION AND METHOD OF FORMING FOAM MATERIAL

A method of forming foam material is provided, which includes mixing 100 parts by weight of a compound having cyclic carbonate groups and a foaming agent to form a foaming composition, wherein the foaming agent includes 3 to 13 parts by weight of carbamate salt and 15 to 65 parts by weight of amino compound. The foaming composition is heated to 100° C. to 170° C. for decomposing the carbamate salt into COand amino compound, and the amino compound is reacted with the compound having cyclic carbonate groups to form the foam material. 1. A foaming composition , comprising:100 parts by weight of a compound having cyclic carbonate groups; anda foaming agent,wherein the foaming agent includes:3 to 13 parts by weight of carbamate salt; and15 to 65 parts by weight of amino compound.4. The foaming composition as claimed in claim 1 , wherein the amino compound comprises triethylenetetramine claim 1 , trimethylhexamethylenediamine claim 1 , polyethyleneimine claim 1 , 1 claim 1 ,3-bis(aminomethyl)cyclohexane claim 1 , m-xylylenediamine claim 1 , polyoxypropylenediamine claim 1 , polyetheramine claim 1 , ethylenediamine claim 1 , or a combination thereof.6. The foaming composition as claimed in claim 1 , further comprising 2 to 10 parts by weight of filler claim 1 , and the filler comprises hollow beads claim 1 , vermiculite claim 1 , or a combination thereof.7. A method of forming foam material claim 1 , comprising:mixing 100 parts by weight of a compound having cyclic carbonate groups and a foaming agent to form a foaming composition, wherein the foaming agent includes 3 to 13 parts by weight of carbamate salt and 15 to 65 parts by weight of amino compound; and{'sub': '2', 'heating the foaming composition to 100° C. to 170° C. for decomposing the carbamate salt into COand the amino compound, and the amino compound is reacted with the compound having cyclic carbonate groups to form a foam material.'}10. The method as claimed in claim 7 , wherein the amino compound comprises ...

PVC COMPOSITE MATERIAL, FOAM BOARD, AND FLOORING

A polyvinyl chloride polymer (PVC) composite material is described herein. The PVC composite material includes 40-60 parts by weight of PVC, 40-60 parts by weight of calcium carbonate, 0.2-0.6 parts by weight of composite foaming agent, 3-5 parts by weight of foam regulator, 2-4 parts by weight of toughener, 0.8-1.2 parts by weight of lubricant, and 2-3 parts by weight of stabilizer. Meanwhile, the present invention provides a foam board made of the PVC composite material and flooring. The resulting PVC products have a high-strength structure and a good foaming property, bring the comfort to feet as the resilient flooring does, have a satisfied sound reduction and can be easily installed as the hard flooring could. 1. A polyvinyl chloride polymer composite material , comprising:40-60 parts by weight of polyvinyl chloride polymer;40-60 parts by weight of calcium carbonate;0.2-0.6 parts by weight of composite foaming agent;3-5 parts by weight of foam regulator;2-4 parts by weight of toughener;0.8-1.2 parts by weight of lubricant; and2-3 parts by weight of stabilizer.2. The polyvinyl chloride polymer composite material according to claim 1 , wherein the polyvinyl chloride polymer composite material comprises:45-55 parts by weight of polyvinyl chloride polymer;45-55 parts by weight of calcium carbonate;0.2-0.6 parts by weight of composite foaming agent;3.5-4.5 parts by weight of foam regulator;2.5-3.5 parts by weight of toughener;0.9-1.1 parts by weight of lubricant; and2-3 parts by weight of stabilizer.3. The polyvinyl chloride polymer composite material according to claim 1 , wherein the PVC composite material comprises:50-60 parts by weight of polyvinyl chloride polymer;40-50 parts by weight of calcium carbonate;0.2-0.6 parts by weight of composite foaming agent;4-5 parts by weight of foam regulator;3-4 parts by weight of toughener;1-1.2 parts by weight of lubricant; and2-2.5 parts by weight of stabilizer.4. The polyvinyl chloride polymer composite material according ...

FUNCTIONALIZED PARTICULATE BICARBONATE AS BLOWING AGENT, FOAMABLE POLYMER COMPOSITION CONTAINING IT, AND ITS USE IN MANUFACTURING A THERMOPLASTIC FOAMED POLYMER

A chemical blowing agent for foaming a thermoplastic polymer, for example PVC plastisol or a polymer resin in an extrusion process, said chemical blowing agent comprising a functionalized particulate bicarbonate containing at least one additive, preferably excluding an exothermic blowing agent. The additive may be selected from the group consisting of rosin acids, any derivative thereof, and salts thereof; or any combinations thereof, such as comprising abietic acid, dihydroabietic acid, neoabietic acid, a rosin acid ester, or mixtures thereof. The particulate bicarbonate may be preferably functionalized by spray-coating, extrusion or co-grinding with at least one additive. The functionalized particulate bicarbonate may comprise 50 wt % to less than 100 wt % of the bicarbonate component, and 0.02-50 wt % of the additive. The functionalized particulate bicarbonate may further comprise 0.1-5 wt % silica. A foamable polymer composition comprising such chemical blowing agent. A process for manufacturing a foamed polymer, such as foamed PVC, comprising shaping and heating the foamable polymer composition, and a foamed polymer obtained by such process. 1. A chemical blowing agent for foaming a thermoplastic polymer precursor ,said chemical blowing agent comprising a functionalized particulate bicarbonate,wherein said functionalized particulate bicarbonate contains at least one additive, andwherein said additive in the functionalized particulate bicarbonate comprises rosin acid, any derivative thereof, any salt thereof, or any combinations thereof.2. The chemical blowing agent according to claim 1 , wherein the blowing agent does not contain any further blowing agent which is an exothermic blowing agent claim 1 , or wherein the chemical blowing agent does not contain a compound which liberates nitrogen gas during heating claim 1 , or wherein the chemical blowing agent does not contain a compound which liberates ammonia gas during heating.3. The chemical blowing agent ...

FUNCTIONALIZED PARTICULATE BICARBONATE AS BLOWING AGENT, FOAMABLE POLYMER COMPOSITION CONTAINING IT, AND ITS USE IN MANUFACTURING A THERMOPLASTIC FOAMED POLYMER

A chemical blowing agent for foaming a thermoplastic polymer, for example PVC plastisol or a polymer resin in an extrusion process, said chemical blowing agent comprising a functionalized particulate bicarbonate containing at least one polyoxyalkylene additive, preferably excluding an exothermic blowing agent. The polyoxyalkylene additive may be selected from the group consisting of polyoxyalkylenes, any derivative thereof, salts thereof, and any combinations thereof. The particulate bicarbonate may be preferably functionalized by spray-coating, extrusion or co-grinding with at least one polyoxyalkylene additive. The functionalized particulate bicarbonate may comprise 50 wt % to less than 100 wt % of the bicarbonate component, and 0.02-50 wt % of the additive. The functionalized particulate bicarbonate may further comprise 0.1-5 wt % silica. A foamable polymer composition comprising such chemical blowing agent. A process for manufacturing a foamed polymer, such as foamed PVC, comprising shaping and heating the foamable polymer composition, and a foamed polymer obtained by such process. 1. A chemical blowing agent for foaming a thermoplastic polymer precursor ,said chemical blowing agent comprising a functionalized particulate bicarbonate,wherein said functionalized particulate bicarbonate contains at least one functionalization additive, andwherein said functionalization additive in the functionalized particulate bicarbonate comprises a polyoxyalkylene additive selected from the group consisting of polyoxyalkylenes, any derivatives thereof, salts thereof, and any combination of two or more thereof.2. The chemical blowing agent according to claim 1 , wherein the blowing agent does not contain any further blowing agent which is an exothermic blowing agent claim 1 , or wherein the chemical blowing agent does not contain a compound which liberates nitrogen gas during heating claim 1 , or wherein the chemical blowing agent does not contain a compound which liberates ...

SUPERABSORBENT POLYMER HAVING HIGH ABSORPTION RATE UNDER LOAD AND PREPARATION METHOD THEREOF

Provided are a superabsorbent polymer and a preparation method thereof. In the superabsorbent polymer according to the present invention, a low-temperature foaming agent are used together with a high-temperature foaming agent to control the size and distribution of internal pores of the superabsorbent polymer, thereby increasing absorption rate under load without reduction in gel strength. 1. A method of preparing a superabsorbent polymer comprising:1) polymerizing or crosslinking a monomer composition comprising acrylic acid-based monomers having acidic groups which are at least partially neutralized, in the presence of a polymerization initiator, a first crosslinking agent, a low-temperature foaming agent, and a high-temperature foaming agent at 25 to 100° C. to form a water-containing gel polymer,2) coarsely pulverizing the water-containing gel polymer,3) drying the coarsely pulverized water-containing gel polymer at 150° C. to 250° C.,4) pulverizing the dried polymer, and5) surface-modifying the pulverized polymer by a second crosslinking agent.2. The method of claim 1 , wherein a weight ratio of the low-temperature foaming agent and the high-temperature foaming agent is 50:1 to 2:1.3. The method of claim 1 , wherein the low-temperature foaming agent is sodium bicarbonate claim 1 , sodium carbonate claim 1 , potassium bicarbonate claim 1 , potassium carbonate claim 1 , calcium bicarbonate claim 1 , calcium carbonate claim 1 , magnesium bicarbonate claim 1 , or magnesium carbonate.41. The method of claim 1 , wherein the polymerization and crosslinking of step are performed at a temperature of 30° C. to 90° C.5. The method of claim 1 , wherein the high-temperature foaming agent is azodicarbonamide (ADCA) claim 1 , dinitroso pentamethylene tetramine (DPT) claim 1 , p claim 1 ,p′-oxybisbenzenesulfonylhydrazide (OBSH) claim 1 , p-toluenesulfonyl hydrazide (TSH) claim 1 , or sugar ester.6. The method of claim 5 , wherein the sugar ester is sucrose stearate claim 5 , ...

SHAPED PARTS MADE OF REINFORCED POLYURETHANE UREA ELASTOMERS AND USE THEREOF

The invention relates to foamed shaped parts provided with reinforcing materials and made from polyurethane urea elastomers, and to the use thereof. 15.-. (canceled)7. The molding as claimed in claim 6 , wherein the average fibers lengths of the carbon fibers (C) are from 90 to 200 μm.8. The molding as claimed in claim 6 , wherein the density of the molding is from 0.7 to 1.1 g/cm.9. The molding as claimed in claim 6 , wherein the flexural modulus of elasticity of the molding longitudinally with respect to the fiber direction is at least 600 MPa.10. An article comprising the moldings as claimed in claim 6 , wherein the article is an external bodywork part claim 6 , a bodywork element claim 6 , a flexible automobile bumper claim 6 , a wheel surround claim 6 , a doors claim 6 , a tailgate claim 6 , a front apron claim 6 , or a rear apron. The invention relates to foamed moldings made of polyurethane urea elastomers and provided with reinforcing materials, and to the use of said moldings.The production of polyurethane (PUR) urea elastomers via reaction of NCO semiprepolymers with mixtures of aromatic diamines and relatively high-molecular-weight compounds containing hydroxy or amino groups is known, and is described by way of example in EP-B 225 640. In order to achieve certain mechanical properties in the moldings produced from these materials it is necessary to add reinforcing materials to the reaction components, particular results here being improvement of the thermomechanical properties and a considerable increase in flexural modulus of elasticity. The use of these reinforcing materials markedly increases the viscosity of at least one reaction component (generally the polyol component), and this often leads to mixing problems and thus to processing problems which ultimately affect the component.It is desirable to find reinforced polyurethane urea elastomers which, during the production of sheet-like moldings, for example wheel surrounds, doors, or tailgates of ...

Novel Blowing Agents and Process

The present invention is directed to the formulation and preparation of blowing agent powders and pelletized blowing agent concentrates that release water during the decomposition of the blowing agent components. The water released becomes chemically bonded to a dessicate such as calcium oxide (CaO). By chemically bonding the water generated by the decomposition of the blowing agent components, i.e., the sodium bicarbonate and benzenethiol sulphonic acid derivatives (OBSH), the foamed plastic develops a dramatically reduced cell size and hence smaller cell formation with improved surface quality. The dessicant materials are blended directly with the blowing agent components at levels that allow complete reaction with the water that is generated during the decomposition of the blowing agent components. 1. A process for producing a substantially anhydrous blowing agent powder comprising the steps of treating a blowing agent selected from the group comprising p ,p′-oxybis(benzenesulfonyl hydrazide) , sodium bicarbonate , azodicarbonamide and mixtures thereof with at least one dessicant selected from the group consisting of alkali carbonates and organic acid anhydrides under conditions substantially free of a solvent to provide a substantially anhydrous blowing agent powder.2. The process of wherein said alkali carbonate is selected from the group consisting of calcium oxide (CaO) claim 1 , magnesium oxide (MgO) claim 1 , aluminum oxide (AlO) claim 1 , and mixtures thereof.3. The process of wherein said organic acid anhydride is selected from the group consisting of acetic anhydride claim 2 , maleic anhydride claim 2 , formic anhydride and mixtures thereof.4. The process of wherein the blowing agent compound and powder is mixed at a temperature sufficient to result in the decomposition of the blowing agent thereby releasing water there from.5. The process of wherein said dessicant is added in an amount sufficient to react with all of the water that is produced from the ...

Method for producing a rigid polyurethane foam

The present invention relates to a process for the production of a rigid polyurethane foam or rigid polyisocyanurate foam, comprising the reaction of at least one polyisocyanate and of a polyol composition (PZ), where the polyol composition (PZ) comprises at least one compound having at least two hydrogen atoms reactive toward isocyanate groups and at least one compound (I) selected from the group consisting of dicarboxylic diesters of dicarboxylic acids having from 2 to 18 C atoms and tricarboxylic triesters of tricarboxylic acids having from 3 to 18 C atoms, where at least one blowing agent is used during the reaction. The present invention further relates to rigid polyurethane foams or rigid polyisocyanurate foams obtainable or obtained by such a process, and also to a polyol composition (PZ) at least comprising one compound having at least two hydrogen atoms reactive toward isocyanate groups and at least one compound (I) selected from the group consisting of dicarboxylic diesters of dicarboxylic acids having from 2 to 18 C atoms and tricarboxylic triesters of tricarboxylic acids having from 3 to 18 C atoms. The present invention also relates to the use of such a polyol composition (PZ) for the production of rigid polyurethane foams or rigid polyisocyanurate foams, and also to the use of a rigid polyurethane foam or rigid polyisocyanurate foam of the invention as, or for the production of, insulation materials, preferably insulation sheets, sandwich elements, hot-water tanks, boilers, coolers, insulation foams, refrigerators or freezers.

PROCESS FOR PRODUCING POLYMER FOAMS COMPRISING IMIDE GROUPS

A process for producing a polymer foam including reacting components A to C in the presence of component D and optionally E or of an isocyanate-functional prepolymer of components A and B with component C in the presence of component D and optionally E. The polymer foam includes 35 to 75 wt % of at least one polyisocyanate component A, 5 to 50 wt % of at least one polyol component B, 1 to 10 wt % of water as component C, 0.01 to 3 wt % of at least one Lewis base component D, and optionally 0 to 5 wt % of at least one foam stabilizer component E. Component A is a condensation product including polyimide groups and obtained by condensing at least one polyisocyanate component with at least one polycarboxylic acid having at least 3 COOH groups per molecule or anhydride. The process is effected to release carbon dioxide. 1. A process for producing a polymer foam comprising reacting components A to C in the presence of component D and optionally E or of an isocyanate-functional prepolymer of components A and B with component C in the presence of component D and optionally E , the total amount of which is 100 wt % ,(A) 35 to 75 wt % of at least one polyisocyanate component A, wherein 10 to 100 wt % of component A is a condensation product comprising polyimide groups and obtained by condensing at least one polyisocyanate component with at least one polycarboxylic acid having at least 3 COOH groups per molecule or anhydride thereof,(B) 5 to 50 wt % of at least one polyol component B,(C) 1.0 to 2.5 wt % of water as component C, and(D) 0.01 to 3 wt % of at least one Lewis base component D,(E) 0 to 5 wt % of at least one foam stabilizer component E,wherein said reacting is effected to release carbon dioxide.2. The process according to wherein water as component C is present in an amount of 1.3 to 2.5 wt %.3. The process according to wherein said polyol component B has an average molecular weight in the range from 200 g/mol to 6000 g/mol.4. The process according to wherein the ...

Preparation Method of Super Absorbent Polymer

The present disclosure relates to a preparation method of a super absorbent polymer capable of preparing a super absorbent polymer exhibiting an improved absorption rate while reducing an amount of a blowing agent used. The preparation method of a super absorbent polymer includes: preparing a monomer mixture including a water-soluble ethylene-based unsaturated monomer having at least partially neutralized acidic groups and an internal cross-linking agent; adjusting a dynamic pressure applied to the monomer mixture being transferred to 140 Pa or more by controlling a transfer rate while transferring the monomer mixture to a polymerization reactor; cross-linking and polymerizing the monomer mixture transferred to the polymerization reactor to form a hydrogel polymer; drying, pulverizing and classifying the hydrogel polymer to form a base resin powder; and further cross-linking a surface of the base resin powder in the presence of a surface cross-linking agent to form a surface cross-linked layer. 1. A preparation method of a super absorbent polymer , comprising:preparing a monomer mixture comprising a water-soluble ethylene-based unsaturated monomer having at least partially neutralized acidic groups and an internal cross-linking agent;transferring the monomer mixture to a polymerization reactor;during the transferring the monomer mixture to the polymerization reactor, adjusting a dynamic pressure applied to the monomer mixture being transferred calculated by the following Equation 1 to 140 Pa or more by controlling a transfer rate;cross-linking and polymerizing the monomer mixture transferred to the polymerization reactor to form a hydrogel polymer;drying, pulverizing and classifying the hydrogel polymer to form a base resin powder; and {'br': None, 'i': '*p*V', 'sup': '2', 'Dynamic pressure=1/2\u2003\u2003[Equation 1]'}, 'further cross-linking a surface of the base resin powder in the presence of a surface cross-linking agent to form a surface cross-linked layer{' ...

Methods of Processing Latex, Methods of Making Carpet, and Carpets

Methods are provided for processing a latex stream that include adding an isocyanate to a foam head that converts the latex stream to a foamed latex stream. A curing agent also may be added to the foam head. Also provided are methods of making a carpet that include disposing a foamed latex stream that includes an isocyanate onto a carpet fabric, or a support material to form a carpet backing. Carpets made by the methods herein also are provided. 1. A method of processing a latex stream , the method comprising:forwarding the latex stream to a reservoir of a foam head;disposing an isocyanate into the reservoir of the foam head to form a foamed latex stream comprising the isocyanate; andforwarding the foamed latex stream comprising the isocyanate from the reservoir of the foam head to a coating line.2. The method of claim 1 , further comprising disposing a curing agent into the reservoir of the foam head.3. The method of claim 2 , wherein the curing agent comprises ammonium acetate.4. The method of claim 2 , wherein the reservoir of the foam head comprises an inlet for the forwarding of the latex stream to the reservoir claim 2 , an inlet for disposing the isocyanate into the reservoir claim 2 , an inlet for disposing the curing agent into the reservoir claim 2 , and the inlet for disposing the curing agent into the reservoir is located at a position that is closer to the inlet for the forwarding of the latex stream to the reservoir than the inlet for disposing the isocyanate into the reservoir.5. The method of claim 1 , wherein the latex stream comprises particles of at least one type of latex solid and water.6. The method of claim 5 , wherein the particles of at least one type of latex solid comprise a natural rubber claim 5 , a carboxylated styrene butadiene copolymer claim 5 , or a combination thereof.7. The method of claim 5 , wherein the concentration of water in the latex stream is about 25 to about 33% claim 5 , by weight.8. The method of claim 5 , wherein the ...

FOAMED POLYPROPYLENE COMPOSITION

The present invention is directed to a polypropylene composition (C) a melt flow rate MFR(230° C.) determined according to ISO 1133 in the range of 15 to 40 g/ 10 min, the use of said polypropylene composition (C) for the production of a foamed article and a foamed article comprising said polypropylene composition (C). 115-. (canceled)16. A polypropylene composition (C) having a melt flow rate MFR(230° C.) determined according to ISO 1133 in the range of 15 to 40 g/10 min , comprising{'sub': '2', 'claim-text': i) a first matrix being a first propylene polymer (M1) and', 'ii) a first elastomeric propylene copolymer (E1) dispersed in said first matrix,, 'a) a first heterophasic propylene copolymer (HECO1) having a melt flow rate MFR(230° C.) determined according to ISO 1133 in the range of 50 to 200 g/10 min, said first heterophasic propylene copolymer comprising'}{'sub': '2', 'claim-text': iii) a second matrix, which is a second propylene polymer (M2) and', 'iv) a second elastomeric propylene copolymer (E2) dispersed in said second matrix,, 'b) a second heterophasic propylene copolymer (HECO2) having a melt flow rate MFR(230° C.) determined according to ISO 1133 in the range of 3 to <50 g/10 min, said second heterophasic propylene copolymer comprising'}{'sub': '2', 'c) a high density polyethylene (HDPE) having a melt flow rate MFR(190° C.) determined according to ISO 1133 in the range of 2 to 15 g/10 min,'}{'sub': 4', '8', '2, 'd) a plastomer (PL), which is a copolymer of ethylene and a Cto Cα-olefin and having a melt flow rate MFR(190° C.) determined according to ISO 1133 in the range of 10 to 70 g/10 min,'}e) an inorganic filler (F),f) a foaming agent (FA) comprising citric acid in combination with a bicarbonate, andg) optionally, a nucleating agent.17. The polypropylene composition (C) according to claim 16 , wherein the composition comprisesa) 35.0 to 55.0 wt.-% of the first heterophasic propylene copolymer (HECO1),b) ≥20.0 wt.-% of the second heterophasic ...

BIODEGRADABLE FOAMS

A composite material includes a polymer matrix with a polymer having D-glucosamine monomer units and 50% or fewer N-acetyl-D-glucosamine monomer units. A salt can be disposed in the polymer matrix. A dispersed phase is disposed in the polymer matrix with the salt, and the dispersed phase and the polymer matrix form a porous composite foam. The porous composite foam includes, by weight, 0.5-3 times the dispersed phase to the polymer matrix, and the porous composite foam has a density of less than 1 g/cm. 1. An composite material , comprising:a polymer matrix including chitosan; and{'sup': '3', 'a dispersed phase disposed in the polymer matrix, wherein the dispersed phase, and the polymer matrix form a porous composite foam, wherein the porous composite foam includes, by weight, 0.5-2.5 times the dispersed phase to the polymer matrix, and wherein the porous composite foam has a density of less than 1 g/cm.'}2. The composite material of claim 1 , further comprising a coating disposed on the exterior of the porous composite foam claim 1 , wherein the coating is substantially non-porous and includes chitosan.3. The composite material of claim 2 , wherein the coating encapsulates the porous composite foam to prevent water ingression into the porous composite foam claim 2 , and wherein the polymer matrix includes 90% or more chitosan.4. The composite material of claim 1 , wherein loads imparted on the porous composite foam are transferred claim 1 , at least in part claim 1 , from the polymer matrix to the dispersed phase.5. The composite material of claim 1 , further comprising a plasticizer disposed in the polymer matrix to impart a flexible character to the porous composite foam.6. The composite material of claim 5 , wherein the plasticizer includes a polyol.7. The composite material of claim 1 , wherein the composite foam includes at least one of a sodium or calcium salt.8. The composite material of claim 1 , wherein the dispersed phase includes at least one of chitin ...

Ethylene-propylene-diene rubber foamed material and sealing material

An ethylene-propylene-diene rubber foamed material is obtained by foaming a rubber composition containing an ethylene-propylene-diene rubber and a thermoplastic resin having a melting point of 60 to 140° C. The thermoplastic resin content with respect to 100 parts by mass of the ethylene-propylene-diene rubber is 5 to 50 parts by mass and the ethylene-propylene-diene rubber includes an ethylene-propylene-diene rubber having a diene amount of 4.0 mass % or more.

THERMALLY EXPANDABLE COMPOSITIONS

The present invention relates to a thermally expandable composition comprising at least one peroxidically crosslinking polymer which does not contain glycidyl (meth) acrylate as a monomer in copolymerized form; at least one polymer, which is polymerized with glycidyl (meth) acrylate as a monomer present in a proportion of from 2 to 20% by weight, based on the respective polymer; at least one peroxide; and at least one endothermic chemical propellant, moldings containing this composition, and a method for sealing and filling cavities in components, for reinforcing or stiffening components, in particular hollow components, and for bonding movable components using such molded bodies. 1. A thermally expandable composition , containinga) at least one peroxidically crosslinking polymer that does not contain glycidyl (meth)acrylate as a monomer in copolymerized form,b) at least one polymer that contains glycidyl (meth)acrylate as a monomer in copolymerized form in a proportion from 2 to 20 wt % with respect to the respective polymer,c) at least one peroxide, andd) at least one endothermic chemical propellant.2. The thermally expandable composition as set forth in claim 1 , wherein the at least one peroxidically crosslinking polymer a) is selected from among ethylene vinyl acetate copolymers claim 1 , functionalized ethylene vinyl acetate copolymers claim 1 , functionalized ethylene butyl acrylate copolymers claim 1 , ethylene propylene diene copolymers claim 1 , styrene butadiene block copolymers claim 1 , styrene isoprene block copolymers claim 1 , ethylene methyl acrylate copolymers claim 1 , ethylene ethyl acrylate copolymers claim 1 , ethylene butyl acrylate copolymers claim 1 , ethylene (meth)acrylic acid copolymers and mixtures thereof.3. The thermally expandable composition as set forth in claim 2 , wherein the at least one peroxidically crosslinking polymer a) is selected from among ethylene vinyl acetate copolymers and functionalized ethylene vinyl acetate ...

THERMALLY EXPANDABLE COMPOSITIONS COMPRISING POLYSACCHARIDE

The present application relates to a thermally expandable composition containing at least one peroxide cross-linking polymer, at least one peroxide, at least one polysaccharide and at least one endothermic, chemical blowing agent; as well as to shaped bodies containing said composition and to a method for sealing and filling voids in components, for strengthening or reinforcing components, in particular hollow components, and for bonding mobile components using shaped bodies of this type. 1. A thermally expandable composition comprising:a. at least one peroxidically crosslinked polymer;b. at least one peroxide;c. at least one polysaccharide; andd. at least one endothermic chemical blowing agent.2. The thermally expandable composition according to claim 1 , wherein the at least one peroxidically crosslinkable polymer a) is selected from styrene-butadiene block copolymers claim 1 , styrene-isoprene block copolymers claim 1 , ethylene-vinyl acetate copolymers claim 1 , functionalized ethylene-vinyl acetate copolymers claim 1 , functionalized ethylene-butyl acrylate copolymers claim 1 , ethylene-propylene-diene copolymers claim 1 , ethylene-methyl acrylate copolymers claim 1 , ethylene-ethyl acrylate copolymers claim 1 , ethylene-butyl acrylate copolymers claim 1 , ethylene-(meth)acrylic acid copolymers claim 1 , ethylene-2-ethylhexyl acrylate copolymers claim 1 , ethylene-acryl ester copolymers and polyolefins.3. The thermally expandable composition according to claim 2 , wherein the at least one peroxidically crosslinked polymer a) is a copolymer selected from ethylene-vinyl acetate copolymers and functionalized ethylene-vinyl acetate copolymers.4. The thermally expandable composition according to claim 1 , wherein the at least one polysaccharide is a starch and/or a cellulose.5. The thermally expandable composition according to claim 4 , wherein the at least one polysaccharide is a starch.6. The thermally expandable composition according to claim 5 , wherein the ...

THERMALLY EXPANDABLE COMPOSITIONS COMPRISING UREA DERIVATIVES

The present application relates to a thermally expandable composition containing at least one peroxide cross-linking polymer, at least one peroxide and at least one endothermic, chemical blowing agent, the blowing agent comprising at least one solid, optionally functionalized, polycarboxylic acid or the salt thereof and at least one urea derivative according to the formula (I) as defined herein; as well as shaped bodies containing the composition and to a method for sealing and filling voids in components, for strengthening or reinforcing components, in particular hollow components, and for bonding mobile components using shaped bodies of this type. 1. A thermally expandable composition , comprising:a) at least one peroxidically cross-linking polymer;b) at least one peroxide; and {'br': None, 'sub': 1', '2', '3, 'R—NH—C(═X)—NRR\u2003\u2003(I)'}, 'c) at least one endothermic chemical blowing agent comprising at least one carboxylic acid or salt thereof, and at least one urea derivative of formula (I)'}wherein X denotes O or S; and{'sub': 1', '2', '3', '4', '4, 'R, Rand Rindependently denote H, substituted or unsubstituted alkyl, substituted or unsubstituted heteroalkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl or —C(O)—R, where Rdenotes H or substituted or unsubstituted alkyl.'}2. The thermally expandable composition according to claim 1 , wherein the at least one peroxidically cross-linking polymer a) is selected from styrene-butadiene block copolymers claim 1 , styrene-isoprene block copolymers claim 1 , ethylene-vinyl acetate copolymers claim 1 , functionalized ethylene-vinyl acetate copolymers claim 1 , functionalized ethylene-butyl acrylate copolymers claim 1 , ethylene-propylene-diene copolymers claim 1 , ethylene-methyl acrylate copolymers claim 1 , ethylene-ethyl acrylate copolymers claim 1 , ethylene-butyl acrylate copolymers claim 1 , ethylene-(meth)acrylic acid copolymers claim 1 , ethylene-2-ethylhexyl acrylate copolymers ...

PROCESS FOR PREPARING BIOCOMPATIBLE AND BIODEGRADABLE POROUS THREE-DIMENSIONAL POLYMER MATRICES AND USES THEREOF

The present invention relates to a process for preparing a biocompatible and biodegradable, porous three-dimensional polymer matrix, to the porous polymer matrix obtained by means of such a process, and also to the uses thereof, in particular as a support and for cell culture or in regenerative medicine, and in particular for cell therapy, in particular cardiac cell therapy. 1. Process for preparing a biocompatible and biodegradable polymer matrix comprising a network of open and interconnected pores , said process comprising at least the following steps:1) preparing an aqueous solution comprising at least one biocompatible anionic polysaccharide and at least one biocompatible cationic polymer,2) mechanically stirring said solution obtained above in the preceding step, in the presence of a foaming agent or of a pressurized gas, so as to form a foam,3) freezing the foam obtained above in the preceding step, so as to obtain a frozen foam,4) gelling the frozen foam obtained above in the preceding step, by adding, to said foam, at least one gelling agent in solution in a solvent, so as to obtain a gelled foam,5) dehydrating the gelled foam obtained above in the preceding step, so as to obtain a dehydrated gelled foam, then{'sub': '2', '6) drying the dehydrated gelled foam obtained above in the preceding step, by treatment with supercritical CO, so as to obtain said polymer matrix.'}2. Process according to claim 1 , wherein the biocompatible anionic polysaccharide(s) have an average molecular weight (MwA) of greater than or equal to 75 000 Daltons.3. Process according to claim 1 , wherein the biocompatible anionic polysaccharide(s) are chosen from alginates and modified alginates.4. Process according to claim 1 , wherein the amount of anionic polysaccharides present in the aqueous solution of step 1) ranges from 0.5% to 8% by weight relative to the total weight of said aqueous solution.5. Process according to claim 1 , wherein the biocompatible cationic polymer(s) have ...

FOAM PRODUCTS AND METHODS OF PRODUCING THE SAME

Compositions for the formation of heat resistant foams are disclosed. The invention also relates to a process for the production of polymeric foams containing amide groups with foaming substantially accomplished by elimination of carbon dioxide by reaction of polyfunctional isocyanates, carboxylic acids, and polyols in the presence of a catalyst system composition comprises a catalyst compound having a cation of a metal, in a salt or ligand, which metal is selected from the group consisting of magnesium, cobalt, manganese, yttrium, Lanthanide Series metals, and combinations thereof, resulting in formation of amide groups in the polymer. 1. A polymer foam material formed from a foamable composition comprising:an organic polyisocyanate component;a polyacid component substantially reactive with the polyisocyanate to form an amide group in a polyamide-urethane copolymer;a polyol component substantially reactive with the polyisocyanate component to form a urethane group in a polyamide-urethane copolymer;a surfactant composition component; anda catalyst system composition having substantial catalytic activity in the curing of said foamable composition, wherein the catalyst system composition comprises a catalyst compound comprising a cation of a metal, in a salt or ligand, which metal is selected from the group consisting of magnesium, cobalt, manganese, yttrium, Lanthanide Series metals, and combinations thereof;wherein the curing reaction is associated with the elimination of carbon dioxide derived from a carboxy group in the polyacid and results in formation of amide groups in the copolymer component.2. (canceled)3. The polymer foam material of claim 1 , wherein the catalyst compound is selected form the group consisting of magnesium hydroxide claim 1 , magnesium oxide claim 1 , magnesium acetate claim 1 , magnesium stearate claim 1 , magnesium dimerate claim 1 , magnesium in association with an aromatic polyester polyol claim 1 , and combinations thereof.4. The ...

Heat expandable foam

A composition for an expandable sealant including at least one polymeric material selected from the group consisting of low density polyethylenes (LDPE), linear low density polyethylenes (LLPDE), ethylene vinyl acetate (EVA), ethylene methacrylate (EMA), and ethylene-butyl acrylate (EnBA); and a chemical blowing agent, wherein the composition is substantially free of a cross-linking agent.

MODIFIED SILICONE RESIN FOAMED BODY

An object of the present invention is to provide a modified silicone resin foam that can be foamed without generating hydrogen as a by-product, while maintaining excellent texture and flexibility. The present invention provides a modified silicone resin foam obtained by curing a foamable liquid resin composition, the foamable liquid resin composition containing 100 parts by weight of a base resin, 0.1 to 5 parts by weight of a silanol condensation catalyst, and 2 to 40 parts by weight of a chemical foaming agent, the base resin including a polymer having in its molecular chain at least one silyl group that contains a hydrolyzable group bonded to a silicon atom and can be crosslinked by forming a siloxane bond, the polymer having a backbone composed of oxyalkylene units, the foam having an ASKER FP hardness of 60 or less in a 25° C. atmosphere. 1. A modified silicone resin foam , obtained by curing a foamable liquid resin composition , the foamable liquid resin composition comprising:100 parts by weight of a base resin;0.1 to 5 parts by weight of a silanol condensation catalyst; and2 to 40 parts by weight of a chemical foaming agent,the base resin comprising a polymer having in its molecular chain at least one silyl group that contains a hydrolyzable group bonded to a silicon atom and can be crosslinked by forming a siloxane bond, the polymer having a backbone composed of oxyalkylene units,the foam having an ASKER FP hardness of 60 or less in a 25° C. atmosphere.2. The modified silicone resin foam according to claim 1 ,wherein the backbone of the polymer is composed of oxypropylene repeating units.3. The modified silicone resin foam according to claim 1 ,wherein the polymer has a number average molecular weight of at least 3000 but not more than 100000.4. The modified silicone resin foam according to claim 1 ,wherein the silanol condensation catalyst is an acidic organophosphate.5. The modified silicone resin foam according to claim 1 ,{'sub': m', '2m+1', 'n', '3-n, ...

FOAMED THERMOPLASTIC MATERIAL, METHOD FOR THE MANUFACTURE THEREOF, ARTICLES PREPARED THEREFROM, AND ARTICLE-FORMING METHOD

A foamed thermoplastic material includes a thermoplastic material exhibiting, in its unfoamed state, a particular flammability index, flame growth rate, and specific extinction area. The foamed thermoplastic material further includes a plurality of cells having a number average mean diameter of 5 to 150 micrometers present in an amount effective to provide the foamed thermoplastic material with a density that is 10 to 90 percent of the density of the unfoamed thermoplastic material. The foamed thermoplastic material exhibits a desirable tensile elongation and dielectric constant. A process for forming the foamed thermoplastic material, articles including the foamed thermoplastic material, and an article-forming process are also described. 1. A foamed thermoplastic material comprising: [ a flammability index of 0.1 to 15, determined according to ASTM D7309 Method A at a heating rate of 1° C. per second under nitrogen from 25 to 750° C.;', {'sup': '2', 'a flame growth rate of 0.1 to 1.5 kW/ms, determined according to ASTM E1354 or ISO 5660 using an applied heat flux of 35 kilowatt per square meter;'}, 'a specific extinction area of 300 to 1200 square meters per kilogram, determined according to ASTM E1354 or ISO 5660 using an applied heat flux of 35 kilowatt per square meter;', 'a tensile elongation of greater than 100%, measured according to UL 1581 at a temperature of 23° C., using a coated wire test sample; and', 'a dielectric constant of 2 to 4, determined according to ASTM D150-11 at 1 MHz; and, 'in its unfoamed state,'}, a tensile elongation of 100 to 500%, measured according to UL 1581 at a temperature of 23° C., using a coated wire test sample; and', 'a dielectric constant of 1.4 to 4, determined according to ASTM D150-11 at 1 MHz; and, 'in its foamed state,'}], 'a thermoplastic material exhibiting,'}a plurality of cells having a number average mean diameter of 5 to 150 micrometers;wherein the cells are present in an amount effective to provide the foamed ...

Film laminate and Interior Trim Part for Motor Vehicles

The invention relates to a film laminate, including at least one compact decorative layer with a lacquer layer on the upper side and with a foam layer on the underside, where the density of the foam layer is more than 500 kg/m 3 . The invention further relates to the use of said film laminate for the coating of components for the interior trim of motor vehicles and to interior trim parts of motor vehicles provided with said film laminate. The foam layer is based on a composition which includes from 15 to 60 parts by weight of at least one thermoplastic vulcanizate, from 15 to 35 parts by weight of at least one high melt strength polyolefin, and from 30 to 60 parts by weight of at least one low density polyethylene (LDPE).

FUNCTIONALIZED PARTICULATE BICARBONATE AS BLOWING AGENT, FOAMABLE POLYMER COMPOSITON CONTAINING IT, AND ITS USE IN MANUFACTURING A THERMOPLASTIC FOAMED POLYMER

A chemical blowing agent for foaming a thermoplastic polymer, for example PVC plastisol or a polymer resin in an extrusion process, comprising a functionalized particulate bicarbonate containing at least one additive, preferably excluding an exothermic blowing agent. The additive may be selected from the group consisting of polymers; inorganic salts; oils; fats; resin acids, any derivative thereof, and salts thereof; amino acids; fatty acids; carboxylic or polycarboxylic acids, soaps; waxes; derivatives thereof; salts thereof; or any combinations thereof. The particulate bicarbonate may be functionalized by spray-drying, coating, extrusion or co-grinding with at least one additive. The functionalized particulate bicarbonate may comprise 50 wt % to less than 100 wt % of the bicarbonate component, and 0.02-50 wt % of the additive. A foamable polymer composition comprising such chemical blowing agent. A process for manufacturing a foamed polymer, such as foamed PVC, comprising shaping and heating the foamable polymer composition, and a foamed polymer obtained by such process. 1. A chemical blowing agent for foaming a thermoplastic polymer precursor ,said chemical blowing agent comprising a functionalized particulate bicarbonate,wherein said functionalized particulate bicarbonate contains at least one additive, andwherein said additive in the functionalized particulate bicarbonate is at least one following compound:one or more polymers;one or more amino acids, any derivative thereof, and salts thereof;one or more inorganic salts;one or more oils;one or more fats;one or more resin acids, any derivative thereof, and salts thereof;one or more fatty acids, any derivative thereof, and salts thereof;a carboxylic or polycarboxylic acid, derivative thereof (such as esters), or salts thereof;one or more soaps;one or more waxes; orany combinations thereof.2. The chemical blowing agent according to claim 1 , wherein the blowing agent does not contain any further blowing agent ...

RESIN COMPOSITION FOR FOAM, FOAM, AND PRODUCTION METHOD OF FOAM

Provided is a resin composition for a foam that may include a base resin having a reactive silicon group (A), a chemical foaming agent (B), and a silanol condensation catalyst (D), wherein the chemical foaming agent (B) comprises a dicarbonate diester (B-1). Further provided is a method for producing a foam, that may include: a mixing step of mixing a liquid, which may include a base resin having a reactive silicon group (A) and a dicarbonate diester (B-1), with a silanol condensation catalyst (D) to obtain a mixed liquid, wherein in the mixed liquid, a rate of foaming effected by decomposition of the dicarbonate diester (B-1), and a rate of a curing reaction of the mixed liquid effected by a reaction between the reactive silicon groups may each be adjusted, such that a foam having an expansion ratio of 2-fold or more and 60-fold or less is obtained. 1. A resin composition for a foam comprising:a base resin having a reactive silicon group (A),a chemical foaming agent (B), anda silanol condensation catalyst (D),wherein the chemical foaming agent (B) comprises a dicarbonate diester (B-1).2. The resin composition for a foam according to claim 1 , wherein the base resin (A) comprises an acrylic resin claim 1 , a polyoxyalkylene-based polymer claim 1 , or an acrylic resin and a polyoxyalkylene-based polymer.4. The resin composition for a foam according to claim 1 , wherein the silanol condensation catalyst (D) is a neutral or weakly acidic catalyst.5. The resin composition for a foam according to claim 4 , wherein the silanol condensation catalyst (D) comprises a tin-containing catalyst.7. The resin composition for a foam according to claim 1 , wherein a content of the dicarbonate diester (B-1) is 1 part by weight or more and 50 parts by weight or less with respect to 100 parts by weight of the base resin (A).8. A foam formed by expanding and curing the resin composition for a foam according to .9. A method for producing a foam claim 1 , comprising:mixing a liquid, which ...

NON-ISOCYANATE POLYURETHANE FOAM COMPOSITION AND METHOD OF MAKING THE SAME

A thermoset non-isocyanate polyurethane foam (NIPU) composition includes a reaction product of a polycyclic carbonate, a polyamine; and a foaming ingredient including a carbonate-based chemical foaming agent. The reaction product is configured to form a urethane bond. The polycyclic carbonate and the polyamine can be bio-derived. A process for making the NIPU foam includes the steps of: (a) selecting a polycyclic carbonate and a polyamine; (b) mixing the polycyclic carbonate and the polyamine to form a reactant product including a partially cured gel matrix; (c) adding a foaming ingredient comprising a blowing agent including a carbonate; (d) curing the mixture to form the NIPU foam. Optionally, a first catalyst can be added to step (b); and additional foaming ingredients selected from the group consisting of an accelerant, a surfactant, and a combination thereof can be added prior to step (d). 1. A thermoset non-isocyanate polyurethane (NIPU) foam composition comprising:a reaction product of:(a) a polycyclic carbonate, having a plurality of cyclic carbonate functional groups, ranging from 5 to 90% of the NIPU foam composition ingredients by weight;(b) a polyamine, having a plurality of amine functional groups, ranging from 5% to 90% of the NIPU foam composition ingredients by weight; and(c) a foaming ingredient configured to produce the NIPU foam composition ranging from 0.5 to 20% of the NIPU composition ingredients by weight, wherein the foaming ingredient comprises a carbonate-based chemical blowing agent;wherein the polycyclic carbonate and the polyamine form a urethane bond.2. The NIPU foam composition of claim 1 , wherein the cyclic carbonate functional group and amine functional group are provided in a ratio in a range from 4:1 to 1:4.3. The NIPU foam composition of claim 1 , wherein the cyclic carbonate functional group and amine functional group are provided in a ratio in a range from 2:1 to 1:2.4. The NIPU foam composition of claim 1 , wherein the ...

Additive compositions for low loss wire and cable dielectric and products obtained thereby

There are disclosed additive compositions for polymer base materials, which additive compositions are comprised of blowing agent (direct gas or chemical blowing agent), thermoplastic polymer carrier for the chemical blowing agent and filler, wherein the thermoplastic polymer carrier has a melting point below the decomposition temperature of the chemical blowing agent. The additive compositions improve the dielectric properties of a foamed material and find particular application as additives for coverings for metallic or non-metallic conductive wire or cable composites. The chemical blowing agent for the additive can be selected from those based on hydrazine, hydrazide, or azodicarbonamide, or those based on combinations of sodium citrate/citric acid and sodium bicarbonate. The filler for the additive can be selected from calcium carbonate, zeolites, clay and other known fillers. The polymer base material for the additive can be, e.g., polyethylene, polypropylene, polybutylene, poly (p-phenylene oxide), polystyrene and combinations thereof.

Composition based on vegetable tannins, free from formaldehyde and low-boiling organic solvents, for manufacturing a foam material, and process thereof

A composition for manufacturing a foam material includes flavonoid tannins, mainly of the prorobineditinidin and/or profisetinidin type, according to an amount generally in the range between 40% and 50% by weight of the composition, furfuryl alcohol according to an amount greater than 15% by weight of the composition, and an acid catalyst. The composition contains an amount of water not greater than 15% by weight of the composition, and includes a substance adapted to release a gas having the function of a foaming agent, such as an isocyanate, according to an amount not greater than 10% by weight of the STD SF composition, preferably less than 1% by weight, the composition being totally free from formaldehyde and of low-boiling organic solvents.

Foamable polyamide composition and foam obtained therefrom

Provided is a foamable polyamide composition comprising a) at least one polyamide comprising at least one carboxylic group; b) at least one thermoplastic rubber; and c) at least one compound having at least one isocyanate group; and optionally d) at least one filler and e) at least one additive. 1. A composition comprising:a) 21.0 to 99.6 wt % of at least one polyamide comprising at least one carboxylic group;b) 0.3 to 9.0 wt % of at least one thermoplastic rubber;c) 0.1 to 3.0 wt % of at least one compound having at least one isocyanate group;d) 0 to 65.0 wt % of at least one filler; ande) 0 to 2.0 wt % of at least one additive;wherein the sum of wt % of the components a) to e) is 100 wt %.2. The composition according to claim 1 , wherein the at least one polyamide is selected from the group consisting of polyamide 6 claim 1 , polyamide 6 claim 1 ,6 claim 1 , and mixtures and co-polyam ides thereof.3. The composition according to claim 1 , wherein the at least one thermoplastic rubber comprises styrenic thermoplastic elastomer claim 1 , preferably selected from the group consisting of styrene-ethylene/butylene-styrene claim 1 , styrene-ethylene/propylene-styrene (SEPS) claim 1 , styrene-ethylene/ethylene/propylene-styrene (SEEPS) claim 1 , and any a combinations thereof.4. The composition according to claim 1 , wherein the at least one thermoplastic rubber comprises ethylene propylene diene rubber claim 1 , ethylene propylene rubber claim 1 , or any a combinations thereof.5. The composition according to claim 1 , wherein the at least one compound having at least one isocyanate group comprises an oligomeric polyisocyanate.6. The composition according to claim 5 , wherein the oligomeric polyisocyanate is a diisocyanate or a triisocyanate.7. The composition according to claim 6 , wherein the polyisocyanate is hexamethylene diisocyanate trimer or isophorone diisocyanate trimer.8. The composition according to claim 1 , wherein the at least one filler is selected from ...

BLOWING AGENT

The present invention relates to a new composition comprising 4,4′-oxybis(benzenesulfonylhydrazide) (OBSH) and sodium hydrogen carbonate (SBC), a process for the manufacturing thereof, and its use as blowing agent for the manufacturing of expanded thermoplastic materials and rubber compounds. 1. A composition comprising:a) 5 to 50% by weight or 4,4′-oxybis(benzenesulfonylhydrazide); andb) 95 to 50% by weight of sodium hydrogen carbonate,whereby the sum of components a) and b) adds up to 100%.2. The composition according to claim 1 , comprising:a) 10 to 40% by weight of 4,4′-oxybis(benzenesulfonylhydrazide); andb) 90 to 60% by weight of sodium hydrogen carbonate,whereby the sum of components a) and b) adds up to 100%.3. The composition according to claim 1 , wherein:the 4,4′-oxybis(benzenesulfonylhydrazide) comprises 4,4′-oxybis(benzenesulfonylhydrazide) particles with a mean particle size D50 of 1 to 15 micron, preferred 4 to 13 micron, very preferred 6 to 10 micron; andthe sodium hydrogen carbonate comprises sodium hydrogen carbonate particles with a mean particle size D50 of 1 to 15 micron, preferred 2 to 10 micron, very preferred 3 to 6 micron.4. The composition according to claim 1 , wherein:the 4,4′-oxybis(benzenesulfonylhydrazide) comprises 4,4′-oxybis(benzenesulfonylhydrazide) particles having a mean particle size D50 of 1 to 15 micron, preferred 4 to 13 micron, very preferred 6 to 10 micron, and a particle size distribution D10 of 0.1 to 3 micron, preferred 0.5 to 2 micron and very preferred 1 to 1.5 micron, and a D90 of 3 to 40 micron, preferred 5 to 30 micron and very preferred 15 to 25 micron, andthe sodium hydrogen carbonate comprises sodium hydrogen carbonate particles with a mean particle size D50 of 1 to 15 micron, preferred 2 to 10 micron, very preferred 3 to 6 micron, and a particle size distribution D10 of 0.1 to 3 micron, preferred 0.5 to 2 micron, and very preferred 0.7 to 1.2 micron, and a D90 of 3 to 40 micron, preferred 5 to 30 micron and very ...

COMPOSITION FOR SPONGE RUBBER, SPONGE RUBBER MOLDED PRODUCT, AND METHOD FOR PRODUCING THE SAME

The present invention provides a composition for sponge rubber including 2 to 6 parts by mass of polyethylene, 0.5 to 12 parts by mass of baking soda as a foaming agent, and a sulfur vulcanizing agent with respect to 100 parts by mass of an ethylene-αolefin-nonconjugated diene copolymer. 1. A composition for sponge rubber comprising 2 to 6 parts by mass of polyethylene , 0.5 to 12 parts by mass of baking soda as a foaming agent , and a sulfur vulcanizing agent with respect to 100 parts by mass of an ethylene-αolefin-nonconjugated diene copolymer.2. The composition for sponge rubber according to claim 1 , wherein the polyethylene is high-pressure low-density polyethylene claim 1 , linear low-density polyethylene claim 1 , or a mixture thereof.3. The composition for sponge rubber according to claim 1 , further comprising 12 parts by mass or more of a process oil as a plasticizer with respect to 100 parts by mass of the ethylene-αolefin-nonconjugated diene copolymer.4. A sponge rubber molded product that is produced by foam molding from the composition for sponge rubber as claimed in .5. The sponge rubber molded product according to claim 4 , wherein the sponge rubber molded product is a sealing part or an end-connection part of a weather strip.6. The sponge rubber molded product according to claim 5 , wherein the sealing part or the end-connection part include an insert made of resin or an insert made of metal.7. A method for producing a sponge rubber molded product claim 1 , the method comprising foam molding the composition for sponge rubber as claimed in in a mold at a temperature of 190° C. to 220° C. The present invention relates to a composition for sponge rubber and a sponge rubber molded product.Sponge rubber is widely used for, for example, sealing parts and end-connection parts of weather strips attached on automobile bodies, sealing materials on house door opening and closing parts, and universal buffer materials. As a rubber polymer of the sponge rubber, ...

METHOD FOR PREPARING SUPERABSORBENT POLYMER

The preparation method of superabsorbent polymer according to the present invention can increase suction power without degradation of other properties of superabsorbent polymer, and thus, the prepared superabsorbent polymer may be usefully used as material of hygienic goods such as a diaper. 1. A method for preparing superabsorbent polymer comprising the steps of1) polymerizing and cross-linking a monomer composition comprising a water-soluble ethylene-based unsaturated monomer, a polymerization initiator, a first cross-linking agent and a blowing agent to form a hydrous gel phase polymer,2) drying the hydrous gel phase polymer,3) grinding the dried polymer, and4) carrying out a surface cross-linking reaction by reacting the ground polymer at 180 to 250° C. for 50 minutes or more in the presence of a second cross-linking agent.2. The method for preparing superabsorbent polymer according to claim 1 , wherein the water-soluble ethylene-based unsaturated monomer is a compound represented by the following Chemical Formula 1 claim 1 ,{'br': None, 'sub': '1', 'sup': '1', 'R—COOM\u2003\u2003[Chemical Formula 1]'}in the Chemical Formula 1,{'sub': 1', '2-5, 'Ris a Calkyl group comprising an unsaturated bond,'}{'sup': '1', 'Mis a hydrogen atom, a monovalent or divalent metal, an ammonium group, or an organic amine salt.'}3. The method for preparing superabsorbent polymer according to claim 1 , wherein the first cross-linking agent is one or more selected from the group consisting of N claim 1 ,N′-methylenebisacrylamide claim 1 , trimethylolpropane tri(meth)acrylate claim 1 , ethyleneglycol di(meth)acrylate claim 1 , polyethyleneglycol (meth)acrylate claim 1 , propyleneglycol di(meth)acrylate claim 1 , polypropyleneglycol (meth)acrylate claim 1 , butanediol di(meth)acrylate claim 1 , butyleneglycol di(meth)acrylate claim 1 , diethyleneglycol di(meth)acrylate claim 1 , hexanediol di(meth)acrylate claim 1 , triethyleneglycol hexanediol di(meth)acrylate claim 1 , ...

POLYMER COMPOSITION BASED ON THERMOPLASTIC COPOLYESTER ELASTOMER, MANUFACTURED ARTICLE MADE WITH SUCH POLYMER COMPOSITION AND PRODUCTION PROCESS OF SUCH POLYMER COMPOSITION

The invention relates to a polymer composition based on thermoplastic copolyester elastomer comprising: —from 90% to 70% by weight of the thermoplastic copolyester elastomer containing ester and ether bonds; —from 5% to 25% by weight of one or more saturated esters with a molecular weight between about 200 and 1,000, and preferably between 300 and 380; —from 2 to 10% by weight of expanding additives. This invention also covers a manufactured article obtained by injection moulding a predefined amount of the polymer composition according to this invention, as well as a production process of such polymer composition. 1. Polymer composition based on thermoplastic copolyester elastomer comprising:from 90% to 70% by weight of the thermoplastic copolyester elastomer containing ester and ether bonds;from 5% to 25% by weight of one or more saturated esters with a molecular weight between about 200 and 1,000, and preferably between 300 and 380;from 2 to 10% by weight of expanding additives.2. Polymer composition according to claim 1 , wherein said one or more saturated esters are present in the composition from 5% to 20% by weight.4. Polymer composition according to claim 3 , wherein said alternating-structure thermoplastic copolyester elastomer is obtained by:esterification/transesterification of one or more dicarboxylic acids, of one or more esters of dicarboxylic acids and/or of one or more dimer or trimer carboxylic acids with diols and with diol polyglycols, the esters of dicarboxylic acids and the dimer or trimer carboxylic acids having a molecular weight greater than 300 and the corresponding carboxylic acid having a molecular weight less than 300; andsubsequent polycondensation of the products of esterification/transesterification.5. Polymer composition according to claim 4 , wherein the long-chain ester units are the reaction products of the esterification/transesterification of one or more diol polyglycols selected from the group consisting of: polytetramethylene ...

Skin-Foam-Substrate Structure Via Induction Heating

A method of forming a skin-foam-substrate type structure particular suitable as an automobile trim component. The method comprises supplying a polymer resin containing a chemical foaming agent and including metal particles capable of inductive heating, that is positioned between a polymeric skin and substrate, followed by inductive heating to cause foaming of the polymeric resin. The foamed polymer resin adheres to the skin and substrate.

MANUFACTURING PROCESS AND COMPOSITION FOR FOAMED PVC-P ROCK SHIELDS

A plasticized PVC formulation for foam extrusion including polyvinyl chloride, at least one plasticizer, at least one nucleating agent and a chemical blowing agent, wherein the plasticized PVC formulation is a dry blend containing 0.5 to 5% by weight of one or more nucleating agents and 0.1 to 3% by weight of the chemical blowing agent, wherein the blowing agent is sodium bicarbonate and the nucleating agent is talcum, and a foam extrusion method using said formulation. The extruded plasticized PVC foam is particularly suitable for rock shield pads used for pipeline protection. The foams are lightweight and require less consumption of materials with comparable properties to corresponding solid articles. 1. A non-woven mat consisting of a plurality of foamed PVC strands that are extruded from a melted plasticized PVC formulation and then fused together , each of the plurality of strands consisting of the plasticized PVC formulation.2. The non-woven mat according to claim 1 , wherein the plasticized PVC formulation comprises from 20 to 70 weight percent PVC.3. The non-woven mat according to claim 1 , wherein the plasticized PVC formulation comprises from 30 to 60 weight percent PVC.4. The non-woven mat according to claim 1 , wherein the plasticized PVC formulation comprises from 40 to 51 weight percent PVC.5. The non-woven mat according to claim 2 , wherein the plasticized PVC formulation further comprises from 15 to 45 percent by weight of plasticizer.6. The non-woven mat according to claim 2 , wherein the plasticized PVC formulation further comprises from 20 to 40 percent by weight of plasticizer.7. The non-woven mat according to claim 2 , wherein the plasticized PVC formulation further comprises from 26 to 31 percent by weight of plasticizer.8. The non-woven mat according to claim 5 , wherein the plasticized PVC formulation further comprises a blowing agent.9. The non-woven mat according to claim 8 , wherein the plasticized PVC formulation further comprises a ...

PROCESSING AIDS FOR USE IN MANUFACTURE EXTRUDED POLYSTYRENE FOAMS USING LOW GLOBAL WARMING POTENTIAL BLOWING AGENTS

A foamable polymeric mixture is provided that includes a polymer composition and at least one blowing agent. The blowing agent may comprise any blowing agents known not to deplete the ozone or increase the prevalence of global warming, such as CO, HFO, HFC and mixtures thereof. The foamable polymeric mixture may further includes at least one processing aid comprising an organic phase changing material. The inventive foamable mixture is capable of processing at a pressure range of 800 to 1200 psi (5.5 to 8.3 MPa). 1. A foamed insulation product comprising: polystyrene;', 'a blowing agent composition, and', 'from 0.05 to 3 wt. % of an organic phase changing material comprising synthetic beeswax;, 'a polymeric foam composition comprisingwherein the foamed insulation product has an insulation R-value per inch of between 4 and 7.2. The foamed insulation product of claim 1 , wherein the blowing agent composition comprises one or more of carbon dioxide claim 1 , hydrofluoroolefins claim 1 , and hydrofluorocarbons.3. The foamed insulation product of claim 2 , wherein the blowing agent composition comprises hydrofluoroolefins and hydrofluorocarbons.4. The foamed insulation product of claim 1 , wherein the organic phase changing material is micro encapsulated.5. The foamed insulation product of claim 4 , wherein the organic phase changing material is microencapsulated by a polymer material comprising one or more of melamine formaldehyde claim 4 , urea formaldehyde claim 4 , and acrylate copolymer resins.6. The foamed insulation product of claim 1 , further comprising at least one infrared attenuating agent.7. The foamed insulation product of claim 1 , wherein the foamed insulation product is monomodal.8. The foamed insulation product of claim 1 , wherein the foamed insulation product has a density of from 1 to 5 lbs/ft.9. The foamed insulation product of claim 1 , wherein the foamed insulation product has a compressive strength between 6 and 80 psi.10. The foamed insulation ...

Formulation of polymeric mixtures for the production of cross-linked expanded PVC foams and process for producing said foams

A formulation of polymeric mixtures for the production of cross-linked expanded PVC foams, of the type comprising PVC, isocyanates, anhydrides and one or more nucleating agents, wherein the nucleating agents are composed of nucleating materials having a porosity of 1-100 nm, preferably 2-50 nm. With respect to known formulations for the production of cross-linked PVC foams, a formulation according to the invention offers the advantage of obtaining the desired degrees of stabilization, nucleation and expansion, even without the use of diazocompounds. 1. A formulation of polymeric mixtures for production of cross-linked expanded PVC foams , comprising:PVC, isocyanates, anhydrides and one or more nucleating agents,wherein said anhydrides are liquid at room temperature;wherein said nucleating agents consist of porous nucleating materials; andwherein diazocompounds are absent.2. The formulation according to claim 1 , wherein a porosity of said one or more nucleating agents is 1-100 nm.3. The formulation according to claim 2 , wherein said one or more nucleating agents comprise a nucleating agent consisting of a porous zeolite claim 2 , composed of aluminosilicates having a formulation:{'br': None, 'i': x', 'y', '.z, 'sub': 2', '2', '3, 'MO.SiOAlO'}wherein:×=0-0.5;y=0-0.5;z=0.5-1; and{'sub': '4', 'M=Na, K, Ca, NH, Fe.'}4. The formulation according to claim 2 , wherein said one or more nucleating agents comprise a nucleating agent consisting of porous sodium bicarbonate.5. The formulation according to claim 4 , wherein said porous sodium bicarbonate is present in a polymeric mixture in quantities lower than 3% by weight.7. The formulation according to claim 1 , wherein the formulation comprises:PVC 30-60%,Isocyanate 20-60%, andLiquid anhydrides 3-40%,in presence ofZeolites less than 3%, andSodium bicarbonate less than 3%.8. A cross-linked expanded PVC foam obtained with a formulation according to claim 1 , wherein said foam has closed cells with a diameter smaller than or ...

POLYVINYL ALCOHOL FIBERS AND FILMS WITH MINERAL FILLERS AND SMALL CELLULOSE PARTICLES

The present invention is directed to an article of manufacture, which can be a fiber and or a film. In one aspect, the fiber or the film comprises a polyvinyl alcohol (PVOH) and an inorganic filler comprising particles having an average diameter of less than about 20 micrometers. The PVOH has a degree of hydrolysis of greater than about 95% and is present in a range between about 20 wt. % and about 99 wt. % based on the total fiber weight. Methods of making the fibers and films are also disclosed. 1. An article of manufacture comprising:a polyvinyl alcohol (PVOH) and an inorganic filler comprising particles having an average diameter of less than about 20 micrometers, the PVOH having a degree of hydrolysis of greater than about 95% and being present in a range between about 20 wt. % and about 99 wt. % based on the total article weight.2. The article of claim 1 , wherein the article is a fiber or a film.3. The article of claim 2 , wherein the inorganic filler particles have an average diameter of less than about 3 micrometers.4. The article of claim 2 , wherein the inorganic filler is present in a range between about 1 wt. % and about 50 wt. % based on the total fiber weight.5. The article of claim 2 , wherein the inorganic filler is precipitated calcium carbonate claim 2 , ground calcium carbonate claim 2 , gypsum claim 2 , titanium dioxide claim 2 , clay claim 2 , silica claim 2 , or any combination thereof.6. The article of claim 2 , wherein the PVOH is present in a range between about 40 wt. % and about 60 wt. % based on the total weight of the fiber or the film.7. The article of claim 2 , wherein the PVOH has a degree of polymerization in a range between about 500 and about 3 claim 2 ,000.8. The article of claim 7 , wherein the degree of polymerization is in a range between about 1 claim 7 ,000 and about 1 claim 7 ,600.9. The article of claim 2 , wherein the degree of hydrolysis is greater than about 98%.10. The article of claim 2 , further comprising cellulose ...

Thermosetting epoxy resin compositions useful as structural reinforcement or structural foam

Thermosetting epoxy resin compositions on the one hand at room temperature in the incompletely cured state exhibit extremely slight alteration in shape and on the other hand develop a high surface tack, and, moreover, in the fully cured state are of high impact strength and at the same time exhibits high adhesion, particularly to metallic substrates. These compositions are ideally suited to the production of self-adhesive reinforcing elements.

FOAMABLE HOT MELT GASKET SEALANTS AND USE THEREOF

The invention relates to a one-part, foamable hot melt gasket sealant. The foamable hot melt adhesive comprises greater than about 35 wt % of a rubber block copolymer, a tackifier and less than about 5 wt % of a wax. The foamable hot melt adhesive can be applied onto a space in between two mating surfaces without expensive foam-in-place equipment. The foamable hot melt gasket sealant is particularly suitable in automotive applications, electrical component and technical lighting sectors. 1. A foamable hot melt adhesive composition comprising:(a) at least about 35 wt % a rubber block copolymer having a solution viscosity of about 10 cps to about 1,950 cps measured in 25 wt % toluene solution at 25° C.; and(b) a tackifier;wherein the adhesive has (i) a viscosity of about 10,000 cps to about 100,000 cps at 180° C.,wherein the foamed adhesive has (ii) a compression of about 5% to about 90% measured in accordance with DIN ISO 815 and (iii) a Shore 00 Durometer set hardness of about 10 to about 60 measured in accordance ASTM D2240; andwherein the total wt % of the component equal to 100 wt % of the adhesive.2. The foamable hot melt adhesive of claim 1 , wherein the rubber block copolymer is a linear block copolymer having a styrene content greater than about 15wt % claim 1 , andwherein the linear block copolymer is selected from the group consisting of styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, and functionalized styrene-butadiene-styrene, functionalized styrene-isoprene-styrene, functionalized styrene-ethylene-butylene-styrene, functionalized styrene-ethylene-propylene-styrene, and mixtures thereof.3. The foamable hot melt adhesive of claim 2 , wherein the linear block copolymer is styrene-ethylenebutylene-styrene or functionalized styrene-ethylenebutylene-styrene.4. The foamable hot melt adhesive of claim 1 , wherein the rubber block copolymer is a radial or a star block copolymer having a ...

New approach to heat expandable materials

A thermally expandable composition, including at least one epoxy-functional polymer, at least one thermoplastic polymer, at least one chemical blowing agent, and at least one activator, wherein the epoxy-functional polymer is present in the composition before expansion with an amount of between 30 and 75 wt.-%, based on the total composition, and the epoxy-functional polymer includes at least 300 mmol epoxy groups per kg polymer, and wherein the chemical blowing agent is able to form at least one reaction product with at least two amino groups upon thermal decomposition, and the chemical blowing agent is in the composition before expansion with an amount of between 5 and 30 wt.-%, based on the total composition.