Thermoplastic compositions based on vinyl-aromatic copolymers and polyamide resins

METHOD FOR PRODUCING POLYAMIDE COMPOSITE MATERIALS CONTAINING SILICON

The invention relates to a method for producing polyamide composite materials containing silicon, comprising the copolymerisation of: a) at least one silicon compound (SV) having at least one silicon atom, said silicon atom having at least one lactamyl group of formula (A) bonded by means of the nitrogen atom thereof; b) the method also comprises copolymerisation with at least one comonomer (CM) that is selected from among ammonium salts of dicarboxilic acids, amino acids, amino acid amides and lactams. In formula (A), m represents a whole number between 1 and 11, in particular in between 2 and 9, and specifically 3, and # represents the connection to the silicon atom of the compound (SV).

Седло для клапана сигнального с дисковым затвором

Полезная модель относится к пожарной технике, применима в клапанах сигнальных с дисковыми затворами прямоточного типа узлов управления спринклерных водозаполненных автоматических установок пожаротушения.Седло для клапана сигнального с дисковым затвором выполнено из двух частей и состоит из первой полой цилиндрической втулки, выполненной из композиционного материала и имеющей утоненную снаружи нижнюю часть с выполненной на ней резьбой, и из второй втулки полой армирующей, сопрягаемой по резьбе с первой втулкой, при этом вторая втулка выполнена с внутренней кольцевой ступенью, обеспечивающей возможность опоры на нее первой полой цилиндрической втулки, и с возможностью герметизации резьбового соединения посредством анаэробного герметика. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 207 724 U1 (51) МПК F16K 1/42 (2006.01) C08L 77/00 (2006.01) C08G 75/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК F16K 1/42 (2021.05); C08L 77/00 (2021.05); C08G 75/00 (2021.05) (21)(22) Заявка: 2021102711, 04.02.2021 (24) Дата начала отсчета срока действия патента: Дата регистрации: 12.11.2021 (45) Опубликовано: 12.11.2021 Бюл. № 32 (54) СЕДЛО ДЛЯ КЛАПАНА СИГНАЛЬНОГО С ДИСКОВЫМ ЗАТВОРОМ (57) Реферат: Полезная модель относится к пожарной имеющей утоненную снаружи нижнюю часть с технике, применима в клапанах сигнальных с выполненной на ней резьбой, и из второй втулки дисковыми затворами прямоточного типа узлов полой армирующей, сопрягаемой по резьбе с управления спринклерных водозаполненных первой втулкой, при этом вторая втулка автоматических установок пожаротушения. выполнена с внутренней кольцевой ступенью, Седло для клапана сигнального с дисковым обеспечивающей возможность опоры на нее затвором выполнено из двух частей и состоит из первой полой цилиндрической втулки, и с первой полой цилиндрической втулки, возможностью герметизации резьбового выполненной из композиционного материала и соединения посредством анаэробного ...

Partially aromatic polyamide moulding compositions and their uses

An unreinforced, halogen-free polyamide moulding composition which is provided with flame retardants and from which it is possible to produce electric and/or electronic components which can be reliably soldered, i.e. in particular without blisters being formed in the soldering process, in particular at 260° C. and possibly higher temperatures after water absorption and in the case of critical designs of the components, and which have an elongation at break of at least 5% and reliably achieve the UL94 classification V0. These polyamide moulding compositions have the following composition: (A) 62-87% by weight of a partially aromatic, partially crystalline copolyamide having a melting point of 270° C. to 320° C. and made up of 100% by weight of diacid fraction composed of: 50-100% by weight of terephthalic acid (TPA) and/or naphthalenedicarboxylic acid; 0-50% by weight of isophthalic acid (IPA), and 100% by weight of diamine fraction composed of at least one diamine selected from the group consisting of: butanediamine, pentanediamine, hexanediamine, octanediamine, methyloctanediamine, nonanediamine, decanediamine, undecanediamine and dodecanediamine; (B) 5-15% by weight of ionomer; (C) 8-18% by weight of flame retardants; (D) 0-5% by weight of additives; where the components (A)-(D) add up to 100% by weight.

Low-staining room temperature curable coating composition

The present invention provides a low-staining room temperature curable coating composition having an excellent low-staining property and recoatability, and comprising (A) a hydroxyl-containing resin, (B) an isocyanate based curing agent, (C) an organosilicate based hydrophilizing agent, (D) a recoatability modifier and (E) an organic solvent, in which the recoatability modifier (D) comprises at least (D1) an amide-containing polymer and (D2) a silane coupling agent.

Salt resistant polyamide compositions

Disclosed is a thermoplastic composition including: a) 20 to 35 weight percent poly(decamethylene decanediamide), b) 50 to 65 weight percent poly(hexamethylene decanediamide), and c) 8 to 15 weight percent of sulfonamide plasticizer. wherein the sulfonamide plasticizer is one or more sulfonamides selected from the group consisting of N-butylbenzenesulfonamide, N-(2-hydroxypropyl)benzenesulfonamide, N-ethyl-o-toluenesulfonamide, N-ethyl-p-toluenesulfonamide, o-toluenesulfonamide, and p-toluenesulfonamideone.

Stone based copolymer substrate

A stone based copolymer substrate includes calcium carbonate (CaCO3) from approximately fifty to eighty-five percent (50-85%) by weight and varying in size generally from 1.0 to 3.0 microns, high-density polyethylene (HDPE) from approximately two to twenty-five percent (2-25%) by weight and a biopolymer from approximately two to twenty-five percent (2-25%) by weight. The substrate may include a biodegradation additive from approximately three fourths of a percent to two percent (0.75-2%) by weight. By selectively adjusting the ranges of the substrate's components, various products can be made to replace current tree-based and plastic-based products. The substrate can be configured to be tear proof, water proof, fade resistant and fire retardant while utilizing less energy and producing less waste during its manufacture. In an exemplary embodiment of the invention, the stone used in the substrate includes limestone.

Transparent films

The invention relates to an optically transparent polymer film or extrudate product made of a polymer composition comprising a semi-crystalline polyamide having a melting temperature of at least 270° C. or a blend of the semi-crystalline polyamide (A) and a second polymer (B), and optionally at least one additive, wherein the semi-crystalline polyamide (A) is present in an amount of more than 50 wt. %, relative to the total weight of the polymer composition, the polymer composition in the optically transparent polymer film or extrudate product has a melting temperature (Tm-C) in the range of 270-340 ° C., and wherein the film or a part of the extrudate product has a haze of less than 12% and a light transmittance, of at least 88% measured with the method according to ASTM D1003A.

Golf ball compositions

Disclosed herein are hard and flexible compositions, i.e., compositions which have a flexural modulus that is less than the value that is expected based on the composition's hardness. The compositions preferably have a hardness/modulus relationship represented by the formula H≧ 11.889 Ln( M )+47, where H is the hardness of the composition, in JIS-C, and M is the flexural modulus of the composition, in ksi; or a softness/stiffness relationship represented by the formula if M <110, then H ≧8.5218 Ln( M )+ 32.5 if M≧110, then H≧72.5, where H is the hardness of the composition, in Shore D, and M is the flexural modulus of the composition, in ksi.

Process for polymerizing lactam

The present invention relates to a novel process for the anionic polymerization of lactam monomers.

Polyamide resin composition

Disclosed is a polyamide resin composition, including: a polyamide (A) containing a diamine unit including 70 mol % or more of a p-xylylenediamine unit and a dicarboxylic acid unit including 70 mol % or more of a linear aliphatic dicarboxylic acid unit having 6 to 18 carbon atoms; and a filler (B), in which the polyamide (A) includes a polyamide having a phosphorus atom concentration of 50 to 1,000 ppm and a YI value of 10 or less in a color difference test in accordance with JIS-K-7105, and a content of the filler (B) is 1 to 200 parts by mass with respect to 100 parts by mass of the polyamide (A).

Hydrolysis-resistant polyamides

Thermoplastic molding compositions comprising A) from 10 to 99.9% by weight of a thermoplastic polyamide, B) from 0.1 to 20% by weight of a terpolymer obtainable via copolymerization of (B1) from 1 to 70% by weight of at least one electron-deficient olefin, (B2) from 0 to 85% by weight of at least one olefin which, at its olefinic double bond, bears only hydrogen atoms and/or carbon atoms without electron-withdrawing substituents, and (B3) from 1 to 99% by weight of at least one alkoxyvinylsilane, C) from 0 to 50% by weight of a fibrous or particulate filler or a mixture of these, D) from 0 to 50% by weight of other additives, where the total of the percentages by weight of components A) to D) is 100%.

Melt-blended thermoplastic composition

Disclosed is a melt-blended thermoplastic composition including: A) a polyamide composition including a) 55 to 90 weight percent semi-crystalline semi-aromatic copolyamide; wherein the semi-aromatic copolyamide has a DMA tan delta peak value of greater than or equal to 0.23; and heat of fusion of at least 20 J/g and b) 10 to 45 weight percent aliphatic homopolyamide; wherein the aliphatic homopolyamide has a DMA tan delta peak value of less than or equal to 0.21; and heat of fusion of at least 30 J/g; B) 0 to 45 weight percent polymeric toughener; C) 0 to 20 weight percent plasticizer; and D) 0 to 45 weight percent reinforcing agent; wherein said melt-blend composition has a glass transition and has a tan delta peak (E″/E′) value of 0.21 or lower at said glass transition. Further disclosed herein is a method for providing the melt-blended thermoplastic composition.

Polymer composition comprising polyamide and ionomer

Disclosed in a composition comprising at least one ionomer (A) and at least one blend comprising at least one polyamide and at least one ionomer (B) wherein the polyamide is an aliphatic polyamide and the ionomer (B) is a copolymer of ethylene, an α, β-unsaturated C 3 -C 8 carboxylic acid, at least one ethylenically unsaturated dicarboxylic acid or derivative thereof, and optionally an alkyl (meth)acrylate.

Process for producing thermoplastic elastomer composition

Disclosed is a process for producing a thermoplastic elastomer composition having a matrix phase comprising a polyamide and an ethylene/vinyl alcohol copolymer and a disperse phase comprising a rubber composition, by which gelation by a reaction between a polyamide and an ethylene/vinyl alcohol copolymer can be inhibited and the dispersion of the rubber composition can be good. In the process, the polyamide resin and the rubber composition are melt-blended to the extent necessary for the rubber composition to form a disperse phase, and then the ethylene/vinyl alcohol copolymer is added and further melt-blended together.

Durable polyoxymethylene composition

A durable polyoxymethylene composition includes a polyoxymethylene copolymer with 1,3-dioxolane as a comonomer, a lubricant, an inorganic filler, a nucleating agent including a sodium salt, a stabilizer, an anti-static agent. A ramp is made of the durable polyoxymethylene. The ramp and the durable polyoxymethylene have excellent micro-wear-resistant property.

Semi-aromatic, semi-crystalline copolyamides

Semiaromatic, semicrystalline copolyamide molding compositions, comprising A) from 35 to 100% by weight of a copolyamide composed of a 1 ) from 35 to 69% by weight of units which derive from hexamethylenediamine and from an aromatic dicarboxylic acid having from 8 to 16 carbon atoms, a 2 ) from 31 to 65% by weight of units which derive from 3,3′-dimethyl-4,4′-diaminodicyclohexylmethane and from terephthalic acid, a 3 ) from 0 to 30% by weight of units of a semicrystalline polyamide different from a 1 ) and a 2 ), B) from 0 to 65% by weight of further additives, where the total of the percentages by weight of A) and B) is 100%.

Antistatic thermoplastic compositions

The instant invention pertains to the use of an antistatic composition comprising a polar thermoplastic polymer and an ionic liquid as antistatic additive for non-polar thermo-plastic or elastomeric polymers. Further aspects of the invention are a process for the preparation of an antistatic non-polar thermoplastic or elastomeric polymer which process comprises incorporating therein a mixture of a polar thermoplastic polymer and an ionic liquid and the composition of a polar thermoplastic polymer, an ionic liquid and a non-polar thermoplastic or elastomeric polymer.

Flame-retardant thermoplastic molding composition

The invention relates to a thermoplastic molding composition comprising a) from 30 to 95% by weight of at least one aliphatic polyamide or copolyamide, as component A, b) from 1 to 15% by weight of at least one cyclic phenoxyphosphazene having at least 3 phenoxyphosphazene units, as component B, c) from 3 to 20% by weight of at least one (di)phosphinate salt, as component C, d) from 1 to 15% by weight of at least one reaction product of melamine with a phosphorus acid, as component D, e) from 0 to 5% by weight of at least one metal borate, as component E, f) from 0 to 20% by weight of at least one impact-modifying polymer, as component F, g) from 0 to 50% by weight of glass fibers, as component G, and h) from 0 to 30% by weight of further additives, as component H, where the total amount of components A to H gives 100% by weight.

Curable biopolymer nanoparticle latex binder for mineral, natural organic, or synthetic fiber products and non-woven mats

A curable aqueous binder composition includes a dispersion of biopolymer particles, optionally with and an inter-particle crosslinking agent, for use in the formation of composite materials such as mineral, natural organic, or synthetic fiber products, including mineral fiber insulation, non-woven mats, fiberglass insulation and related glass fiber products, and wood based products, and construction materials. In an application of the curable aqueous composition to making fiberglass insulation, the composition may be blended with a second resin which may be a non-formaldehyde resin. In an application of the composition to making fiberglass roofing shingles, the biopolymer particles may be mixed into a formaldehyde based resin during or after the polymerization of the resin.

Method for increasing the recyclability of a polyamide used in sintering

The present invention relates to a method for increasing the recyclability of a polyamide in a sintering process, wherein at least 4000 ppm of at least one acid is incorporated in the polyamide, said acid being selected from: the acids of general formula HxPyOz in which x, y and z are integers selected in the range from 1 to 7, boric acid, the salts of these acids, their esters, their anhydrides and mixtures thereof.

Bio-Polymers In Multicomponent Fibers

Multicomponent fibers comprising bio-based thermoplastic polymers, and optionally thermoplastic starch are disclosed. Also disclosed are nonwoven webs and articles formed from these fibers.

Hose for refrigerant transport use

A hose for refrigerant transport use comprising an inner layer with superior deterioration resistance performance. The innermost layer comprised in the hose for refrigerant transport use of the present invention is formed using a polyamide resin composition comprising a polyamide and, per 100 parts by mass thereof, from 0.5 to 20 parts by mass of an acid acceptor.

Thermoplastic elastomer composition and pneumatic tire using same

Provided is a thermoplastic elastomer composition that can be suitably used for the inner liners of pneumatic tires and exhibits high air barrier properties and high fatigue durability. The present invention is a thermoplastic elastomer composition comprising a thermoplastic resin composition and a rubber composition dispersed in the thermoplastic resin composition, wherein the thermoplastic resin composition comprises a polyamide and an ethylene-vinyl alcohol copolymer or a poly(vinyl alcohol), the rubber composition comprises a halogenated isoolefin-p-alkylstyrene copolymer and is cross inked. The thermoplastic resin composition preferably comprises 1 to 25% by weight of the ethylene-vinyl alcohol copolymer or the poly(vinyl alcohol). The thermoplastic elastomer composition preferably comprises 100 parts by weight of the thermoplastic resin composition and 80 to 200 parts by weight of the halogenated isoolefin-p-alkylstyrene copolymer.

Polyamide compound

A polyamide compound containing from 25 to 50 mol % of a diamine unit that contains at least 50 mol % of an alicyclic diamine unit represented by the following general formula (I); from 25 to 50 mol % of a dicarboxylic acid unit that contains a linear aliphatic dicarboxylic acid unit represented by the following general formula (II-1) and/or an aromatic dicarboxylic acid unit represented by the following general formula (II-2) in an amount of at least 50 mol % in total; and from 0.1 to 50 mol % of a constituent unit represented by the following general formula (III): wherein, in the formulae, n indicates an integer of from 2 to 18; Ar represents an arylene group; and R represents a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group.

Polyamide Resin

This is to provide a polyamide resin which can sufficiently ensure all of a relative viscosity ηr (high degree of polymerization), moldable temperature range estimated from a temperature difference (Td−Tm), heat resistance estimated from a melting point Tm, melt moldability estimated from a temperature difference (Tm−Tc), and low water absorbability as compared with the conventional polyoxamide resin. This is a polyamide resin comprising a dicarboxylic acid-derived unit and a diamine-derived unit being bonded, wherein the above-mentioned dicarboxylic acid contains oxalic acid (Compound A), and the above-mentioned diamine contains 1,6-hexanediamine (Compound B) and 2-methyl-1,5-pentanediamine (Compound C).

Wax and method for producing same

Disclosed is a wax that is added to a thermoplastic resin that undergoes a molding process at high temperatures. The wax does not thermally decompose when that thermoplastic resin composition undergoes the molding process. The wax also prevents mold fouling and provides superior lubricating properties and mold release properties. Also disclosed are a method for producing the wax with superior productivity, a lubricant and mold release agent for thermoplastic resin molding processes. The wax contains a dehydration condensed amide wax component. 99.98-5% by weight of which is an acid, which is formed from 2 mol of a C 12-22 saturated aliphatic monocarboxylic acid by molar ratio and “a” mole of a C 2-12 polybasic acid by molar ratio (0≦“a”≦5), and “b” mole of a C 2-14 diamine by molar ratio (1≦“b”≦6), and 0.02-5% by weight of an oxidation inhibitor that has compatibility with this amide wax component.

Composite wheel for a vehicle

Disclosed is a injection molded composite wheel, including a thermoplastic polyamide composition consisting essentially of (A) 20 to 70 weight percent of at least one polyamide resin including at least one repeat unit selected from the group consisting of the formulas —C(O)(CH 2 ) 10 C(O)NH(CH 2 ) n NH—  (I), —C(O)(CH 2 ) 12 C(O)NH(CH 2 ) n NH—  (II), —C(O)(CH 2 ) 14 C(O)NH(CH 2 ) n NH—  (III), and —C(O)(CH 2 ) 16 C(O)NH(CH 2 ) n NH—  (IV); wherein n is an integer selected from 4, 6, and 10, and with the proviso that when the polyamide resin has repeat units of formula (I), at least one other repeat unit of formula (II)-(IV) is also present in at least 30 mol % content; (B) 20 to 65 weight percent of one or more fiber reinforcing agents, and (C) 0 to 20 weight percent of one or more polymer impact modifiers.

Recycled thermoplastic with toughener

Disclosed is a thermoplastic composition including a) a recycled thermoplastic including polyamide resin, polyolefin and mineral filler, wherein the recycled thermoplastic includes at least 60 weight percent content of recycled polyamide selected from the group consisting of polyamide 66, polyamide 6, blends of polyamide 66 and polyamide 6, and copolymers having repeat units of polyamide 66 and polyamide 6; and at least 1 weight percent content of polyolefin; b) polymer toughener, wherein the polymer toughener includes at least 50 to 85 weight percent non-functionalized rubber and 15 to 50 weight percent of a functionalized rubber; and c) 10 to 50 reinforcing agent having a minimum aspect ratio of 3; and molded articles manufactured therefrom.

Polyamide resin-type composite material and method of producing same

A xylylenediamine-based polyamide resin/fiber composite material and molding are provided that do not exhibit a decline in properties under high temperatures and high humidities, and that exhibit a high elastic modulus and present little warping, and exhibit better recycle characteristics, a better moldability, and a better productivity than for thermosetting resins. The polyamide resin-type composite material comprises a fibrous material (B) impregnated with a polyamide resin (A) wherein at least 50 mole % of diamine structural units derived from xylylenediamine, and having a number-average molecular weight (Mn) of 6,000 to 30,000, and containing a component of a molecular weight of not more than 1,000 at 0.5 to 5 mass %.

HEAT RESISTANT THERMOPLASTIC ARTICLES INCLUDING POLYHYDROXY POLYMERS

Disclosed is a molded or extruded thermoplastic article, including a thermoplastic polyamide composition including (a) a polyamide resin; (b) one or more polyhydroxy polymer(s); (c) one or more co-stabilizer(s); (d) one or more reinforcement agents; (e) and, optionally, a polymeric toughener. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. A molded or extruded thermoplastic article , comprising a thermoplastic polyamide composition comprising(a) a polyamide resin having a melting point and/or glass transition temperature;(b) 1 to 10 weight percent of one or more polyhydroxy polymer(s) having a number average molecular weight of at least 2000 and selected from the group consisting of ethylene/vinyl alcohol copolymers;(c) 0.1 to 3 weight percent of one or more co-stabilizer(s) having a 10% weight loss temperature, as determined by thermogravimetric analysis, of greater than 30° C. below said melting point of said polyamide resin if said melting point is present, or at least 250° C. if said melting point is not present, selected from the group consisting of secondary aryl amines, hindered amine light stabilizers, hindered phenols, and mixtures thereof;(d) 10 to about 60 weight percent of one or more reinforcement agents; and(e) 0 to 20 weight percent of a polymeric toughener comprising a reactive functional group and/or a metal salt of a carboxylic acid; wherein all weight percentages are based on the total weight of the polyamide composition; wherein molded 4 mm test bars prepared from said polyamide composition, and exposed at a test temperature at 170° C. for a test period of 500 hours, in an atmosphere of air, and tested according to ISO 527-2/1A, have, on average, a retention of tensile strength of at least 50 percent, as compared with that of an unexposed control of identical composition and shape; and ...

HEAT/LIGHT-STABILIZED POLYAMIDE COMPOSITIONS

Heat and light-stabilized polyamide compositions containing a stabilization system that includes copper oxide and KBr, and have an excellent preservation of color and of the mechanical properties thereof after exposure to heat or to light; these compositions are especially useful for producing shaped articles in the automotive field. 1. An admixture comprising at least one polyamide and a heat- and light-stabilizing amount of at least one copper oxide and KBr.2. The admixture as defined in claim 1 , wherein said at least one polyamide comprises at least one PA-6 polyamide or PA-6 claim 1 ,6 polyamide.3. The admixture as defined in claim 1 , wherein said at least one polyamide comprises a blend of polyamides.4. The admixture as defined in claim 1 , wherein said polyamide comprises at least one (co)polyamide and/or star polyamide.5. The admixture as defined in claim 1 , wherein said at least one polyamide is a branched polyamide or a star polyamide.6. The admixture as defined in claim 1 , wherein said admixture comprises between 20 and 80% by weight of said at least one polyamide claim 1 , relative to the total weight of the composition.7. The admixture as defined in claim 1 , wherein said admixture comprises from 0.001% to 2% by weight of copper oxide claim 1 , relative to the total weight of said polyamide.8. The admixture as defined in claim 1 , wherein said admixture comprises from 0.009% to 1.2% by weight of CuO and 0.1% to 1.2% by weight of KBr claim 1 , relative to the weight of said polyamide.9. The admixture as defined in claim 1 , further comprising at least one other heat and/or light stabilizer selected from the group consisting of KI claim 1 , hindered phenols claim 1 , stabilizers having at least one hindered amine structural unit claim 1 , organic phosphorus-containing stabilizers claim 1 , inorganic phosphorus-containing stabilizers claim 1 , sodium hypophosphite and manganese hypophosphite.10. The admixture as defined in claim 1 , further comprising ...

MOLDED RESIN PRODUCT FOR VEHICLE STRUCTURAL MEMBER OR AIRCRAFT STRUCTURAL MEMBER

A molded resin product for a vehicle structural member or an aircraft structural member according to the present invention is formed by injection-molding of thermoplastic resin feedstock containing reinforcement fibers by using a screw provided at a leading end portion thereof with a mixer protruding in a radial direction. In the injection-molded product, the reinforcement fiber content ratio is greater than or equal to 20% by weight and the weight-average fiber length of the reinforcement fibers in an evaluation target area having a certain size is greater than or equal to 1 mm and less than or equal to 3 mm. 1. A molded resin product for a vehicle structural member or an aircraft structural member , which is formed by injection-molding of thermoplastic resin feedstock containing reinforcement fibers by using a screw provided at a leading end portion thereof with a mixer which is provided with radially protruding fins and in which the number of fins increases toward a leading end side in the axial direction from a rear end side in the axial direction ,wherein thermoplastic resin in which reinforcement fibers each having a length of greater than or equal to 2 mm and less than or equal to 20 mm are contained at the reinforcement fiber content ratio of greater than or equal to 20% by weight is used as feedstock, and the weight-average fiber length of the reinforcement fibers therein is greater than or equal to 1 mm and less than or equal to 3 mm.2. (canceled)3. The molded resin product for a vehicle structural member or an aircraft structural member according to claim 1 , wherein the evaluation target area is an approximate square in a plan view and the length of one side thereof is greater than or equal to 20 mM.4. The molded resin product for a vehicle structural member or an aircraft structural member according claim 1 , wherein the thermoplastic resin injected from the screw is filled into a mold having a temperature adjusted to a temperature lower than or equal ...

POLYAMIDE RESIN COMPOSITIONS

[Problems] 1. A polyamide resin composition , comprising:a polyamide resin (A) comprising a diamine structural unit and a dicarboxylic acid structural unit, and 1 to 40 parts by mass of a copolyamide (B),wherein 70 mol % of the diamine structural unit is derived from xylylenediamine and50 mol % of the dicarboxylic acid structural unit is derived from sebacic acid; andthe copolyamide (B) is selected from the group consisting of (B-1)-(B-3) per 100 parts by mass of the polyamide resin (A);(B-1) is a copolyamide 6/66/12;(B-2) is a copolyamide 6/66/11; and(B-3) is a polyether-polyamide copolymer comprising 12 units of a polyamide or 11 units of a polyamide and one unit of a polyether.2. The polyamide resin composition of claim 1 , wherein the xylylene diamine is m-xylylenediamine claim 1 , p-xylylenediamine claim 1 , or a mixture thereof.3. The polyamide resin composition of claim 1 , wherein the polyamide resin is a polyamide resin obtained by a process comprising polycondensing m-xylylenediamine claim 1 , p-xylylenediamine claim 1 , or a mixture thereof with sebacic acid.4. The polyamide resin composition of claim 1 , further comprising 0.1 to 2 parts by mass of a carbodiimide compound (C) per 100 parts by mass of the polyamide resin (A).5. The polyamide resin composition of claim 4 , wherein the carbodiimide compound (C) is an aliphatic or alicyclic polycarbodiimide compound.6. The polyamide resin composition of claim 1 , further comprising 0.01 to 1 parts by mass of a stabilizer (D) per 100 parts by mass of the polyamide resin (A).7. The polyamide resin composition of claim 6 , wherein the stabilizer (D) is selected from the group consisting of an inorganic stabilizer claim 6 , a secondary aromatic amine stabilizer claim 6 , and an organic sulfur stabilizer.8. The polyamide resin composition of claim 1 , wherein the polyamide resin composition is suitable for a film with a tensile modulus of elasticity (E) of from 70 to 97% of a tensile modulus of elasticity (E) of ...

POLYAMIDE AND POLYAMIDE COMPOSITION

[Problem to be Solved] 1. (A) A polyamide comprising:(a) a unit comprising adipic acid and hexamethylenediamine; and(b) a unit comprising isophthalic acid and hexamethylenediamine,wherein a ratio (x) of an isophthalic acid component to a total carboxylic acid component in the polyamide is 0.05≦(x)≦0.5 and {'br': None, 'i': Y', 'EG', 'x', 'x, '()=[()−()]/[1−()]\u2003\u2003(1)'}, 'a range of (Y) represented by the following formula (1) is −0.3≦(Y)≦0.8.'} {'br': None, 'i': 'EG', '()=an amount of the isophthalic acid end group/the total amount of the carboxyl end group\u2003\u2003(2)'}, 'wherein (EG) represents a ratio of an isophthalic acid end group to a total carboxyl end group contained in the polyamide and is represented by the following formula (2).'}2. The polyamide according to claim 1 , wherein the range of (Y) represented by the formula (1) is 0.05≦(Y)≦0.8.3. The polyamide according to claim 1 , wherein the ratio (x) of the isophthalic acid component claim 1 , the amount of isophthalic acid end group and the total amount of carboxyl end group are values determined by a nuclear magnetic resonance method (NMR).4. A polyamide composition comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '30 to 95% by mass of the polyamide according to ; and'}5 to 70% by mass of (B) an inorganic filler.5. The polyamide according to claim 2 , wherein the ratio (x) of the isophthalic acid component claim 2 , the amount of isophthalic acid end group and the total amount of carboxyl end group are values determined by a nuclear magnetic resonance method (NMR).6. A polyamide composition comprising:{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, '30 to 95% by mass of the polyamide according ; and'}5 to 70% by mass of (B) an inorganic filler. The present invention relates to a polyamide and a polyamide composition.Polyamide resins have good fabricability, mechanical properties and chemical resistance and thus have been widely used as various part materials for garments, ...

Oxygen Scavenging Plastic Material

The invention relates to a plastic material comprising a composition Z comprising the components A, B, C and D, 1. A plastic material comprising a composition Z wherein composition Z includes components A , B , C and D , and whereincomponent A is a polyester,component B is a polyamide,component C is a transition metal catalyst, andcomponent D is an organic compound selected from the group consisting of paraffins, vegetable oils, polyalkylene glycols, esters of polyols, alkoxylates, and mixtures thereof.2. A plastic material as claimed in claim 1 , wherein component A is selected from the group consisting of polyethylene terephthalate claim 1 , cyclohexane dimethanol/polyethylene terephthalate copolymer claim 1 , polyethylene naphthalate claim 1 , polybutylene terephthalate claim 1 , and mixtures thereof.3. A plastic material as claimed in claim 1 , wherein component B is selected from the group consisting of poly(m-xylylene adipamide) claim 1 , poly(hexamethylene isophthalamide) claim 1 , poly(hexamethylene adipamide-co-isophthalamide) claim 1 , poly(hexamethylene adipamide-co-terephthalamide) claim 1 , poly(hexamethylene isophthalamide-co-terephthalamide) claim 1 , poly(hexamethylene adipamide) claim 1 , poly(caprolactam) claim 1 , poly(hexamethylene adipamide)-co-caprolactam claim 1 , and mixtures thereof.4. A plastic material as claimed in claim 1 , wherein component C is selected from the group consisting of cobalt oleate claim 1 , cobalt propionate claim 1 , cobalt stearate claim 1 , cobalt neodecanoate claim 1 , and mixtures thereof.5. A plastic material as claimed in claim 1 , wherein component D is liquid at ambient temperature and atmospheric pressure.6. A plastic material as claimed in claim 1 , wherein composition Z further comprises a component E claim 1 , wherein component E is selected from the group consisting of colorants claim 1 , fillers claim 1 , acid scavengers claim 1 , processing aids claim 1 , coupling agents claim 1 , lubricants claim 1 , ...

Seat support

A seat support and a method for obtaining same includes a support body made from polymeric materials derived from castor oil, a padding positioned on said body, and a coating that covers the padding. The padding includes at least one layer of foam made at least in part from a component derived from renewable sources and/or of natural origin like palm oil, castor oil, soybean oil, colza oil, or in general a vegetable oil, and it can include a layer and/or insert made from gel obtained by adding in dispersion with a polyolic and or isocyanic component, possible particles of cork and possible compatibilizing agents to maintain the continuity of the polymeric characteristics with the coating and promote sticking. The coating includes a polymer formed from castor oil. The seat support according to the present invention is therefore environmentally-friendly, biodegradable, easy to recycle and/or dispose of.

Thermoplastic composition, method of producing the same, and articles made therefrom

The instant invention provides a thermoplastic composition, method of producing the same, and articles made therefrom. The thermoplastic composition according to present invention comprises the melt blending product of: (a) from 10 to 75 percent by weight of a continuous phase, based on the total weight of the thermoplastic composition, wherein said continuous phase comprises one or more thermoplastic polymers; and (b) from 25 to 90 percent by weight of a dispersed phase comprising one or more core/shell polymer particles, based on the total weight of the thermoplastic composition, wherein said one or more core/shell polymer particles comprise a crosslinked elastomer core and a thermoplastic shell and wherein said core/shell polymer has an average particle size diameter in the range of from 70 to 10,000 nm.

Fine Pitch Electrical Connector and a Thermoplastic Composition for Use Therein

A thermoplastic composition for use in a fine pitch electrical connector is provided. The thermoplastic composition contains a liquid crystalline polymer and a plurality of fibers. The volume average length of the fibers in the thermoplastic composition is selectively controlled according to the present invention so that it is within a certain range, such as from about 80 to about 250 micrometers. The fibers also have a narrow length distribution. That is, at least about 70% by volume of the fibers have a length within a certain range. Through the use of a liquid crystalline polymer and fibers of a certain weight average length and narrow length distribution, the present inventors have discovered that the resulting thermoplastic composition is able to achieve a desirable combination of strength and flowability, which enables it to be uniquely suited for the walls of a fine pitch connector. 1. An electrical connector that comprises at least two opposing walls between which a passageway is defined for receiving a contact pin , wherein the walls have a width of about 500 micrometers or less , the walls being formed from a thermoplastic composition that comprises from about 20 wt. % to about 90 wt. % of at least one thermotropic liquid crystalline polymer and from about 2 wt. % to about 40 wt. % of fibers , wherein the ratio of the width of at least one of the walls to the volume average length of the fibers is from about 0.8 to about 3.2 , and wherein the fibers have a volume average length of from about 80 to about 250 micrometers and wherein at least about 70% by volume of the fibers have a length of from about 80 to about 250 micrometers.2. The electrical connector of claim 1 , wherein the walls have a width of from about 200 to about 400 micrometers.3. The electrical connector of claim 1 , wherein the ratio of the width of at least one of the walls to the volume average length of the fibers is from about 1.2 to about 2.9.4. The electrical connector of claim 1 , ...

FLAME RETARDANT POLYAMIDE COMPOSITIONS

Predominately amino terminated phosphonamide oligomers and their use as flame retardant additives in polyamides and copolyamides without detracting from melt processability are described herein. Other important properties such as strength, modulus, dyeing and thermal stability are maintained. 1. A polymer composition comprising at least one phosphonamide oligomer having amino end groups and one or more polyamides , copolyamides or combinations thereof.3. The composition of claim 1 , wherein at least 50% of available end groups of the phosphonamide oligomer are amine groups.4. The composition of claim 1 , wherein the phosphonamide oligomer comprises a molecular weight of about 200 g/mole to about 10 claim 1 ,000 g/mole using polystyrene standards.5. The composition of claim 1 , wherein the composition comprises about 2 wt. % to about 50 wt % phosphonamide oligomer.6. The composition of claim 1 , wherein the one or more polyamides claim 1 , copolyamides or combinations thereof are selected from the group consisting of polyhexamethylene adipamide claim 1 , polyhexamethylene sebacamide claim 1 , polycaprolactam claim 1 , and copolyamide 6/66 claim 1 , nylon-4 claim 1 , nylon-6 claim 1 , nylon-6 claim 1 ,6 claim 1 , nylon-6 claim 1 ,10 claim 1 , nylon-6 claim 1 ,9 claim 1 , nylon-6 claim 1 ,12 claim 1 , nylon-4 claim 1 ,6 claim 1 , nylon-12 claim 1 ,12 claim 1 , nylon-11 claim 1 , nylon-12 claim 1 , aromatic polyamides based on m-xylene claim 1 , diamine and adipic acid; polyamides prepared from hexamethylenediamine and terephthalic acid and/or isoterephthalic acid.7. The composition of claim 1 , further comprising one or more elastomers.8. The composition of claim 7 , wherein the one or more elastomers are selected from the group consisting of poly-2 claim 7 ,4 claim 7 ,4-trimethylhexamethylene-terephthalamide or poly-m-phenyleneisophthalamide.9. The composition of claim 1 , wherein the one or more polyamides claim 1 , copolyamides or combinations thereof comprise block ...

Liquid Crystalline Polymer Composition for High Voltage Electronic Components

A liquid crystalline polymer composition having a relatively high comparative tracking index (“CTI”) is provided. The present inventors have discovered that high CTI values can be achieved through the use of inorganic particles in combination with a functional aromatic compound. While not fully understood, it is believed that the functional compound can react with the liquid crystalline polymer and create smaller degraded polymer chains. In combination with the inorganic particles, these smaller chains can potentially form insulated regions at the surface of the polymer that hinder the formation of conductive carbonaceous deposits during the tracking process, which could otherwise lead to failure during testing. 2. The polymer composition of claim 1 , wherein the functional aromatic compound includes a phenolic compound claim 1 , diphenolic compound claim 1 , naphthenic compound claim 1 , or a combination thereof.3. The polymer composition of claim 1 , wherein the functional aromatic compound includes an aromatic diol.4. The polymer composition of claim 3 , wherein the aromatic diol is 4 claim 3 ,4′-biphenol.5. The polymer composition of claim 1 , wherein the functional aromatic compound includes an aromatic carboxylic acid.6. The polymer composition of claim 1 , wherein the aromatic carboxylic acid is 2 claim 1 ,6-naphthelene dicarboxylic acid.7. The polymer composition of claim 1 , wherein the composition includes from about 0.01 wt. % to about 1 wt. % of at least one aromatic dial and from about 0.001 wt. % to about 0.5 wt. % of at least one aromatic dicarboxylic acid.8. The polymer composition of claim 1 , wherein the composition further includes at least one non-aromatic functional compound.9. The polymer composition of claim 8 , wherein the non-aromatic functional compound is a hydrate.10. The polymer composition of claim 1 , wherein the inorganic particles include titanium dioxide.11. The polymer composition of claim 1 , wherein the composition has a ...

QUASI-MELT PROCESSES FOR SINGLE POLYMER COMPOSITES AND PRODUCTS THEREOF

Processes and compounds are described herein for single polymer composites based on a process for making the single polymer composites that includes the steps of heating a matrix material to create polymer melt, cooling the polymer melt to below its Tto create an undercooled polymer melt, or quasi-melt, and combining the melt with an enhancing or reinforcing material to produce a single polymer composite. The process can produce materials that do not have any degradation of the polymer characteristic of the enhancing material due to melting of the polymer in the enhancing material. 1. A process for preparing a single polymer composite , the process comprising:{'sub': 'm', 'heating a matrix material to above its Tto create a polymer melt'}{'sub': q', 'm, 'cooling the polymer melt to a temperature Tbelow its Tto create an undercooled polymer melt (also called a quasi-melt), and'}combining the undercooled polymer melt with a enhancing material to form the single polymer composite,wherein the matrix material and the enhancing material comprise the same polymer.2. The process of claim 1 , wherein the polymer is a polyolefin claim 1 , polyamide or polyester.3. The process of claim 1 , wherein the polymer is polypropylene claim 1 , nylon-6 claim 1 , or PET.4. The process of claim 1 , wherein Tis at least 10 degrees C. below the Tto create the undercooled polymer melt.5. The process of claim 1 , wherein Tis at least 20 degrees C. below the Tto create the undercooled polymer melt.6. The process according to wherein the undercooled polymer melt is held at Tq for at least 10 seconds.7. The process according to claim 1 , wherein the enhancing material comprises at least about 10% by weight of the single polymer composite.8. The process according to claim 1 , wherein the enhancing material comprises at least about 25% by weight of the single polymer composite.9. The process according to claim 1 , wherein the enhancing material comprises at least about 40% by weight of the single ...

REACTIVE POLYAMIDE RESINS AND POLYAMIDE RESIN COMPOSITIONS

Provided is a polyamide resin composition comprising an elastomer etc, and a reactive polyamide resin excellent in reactivity. The polyamide resin composition comprises 0.5 to 100 parts by mass of an elastomer per 100 parts by mass of a reactive polyamide resin, wherein the reactive polyamide resin obtained by polycondensing a diamine (A) containing 70 mol % or more of a diamine structural unit derived from xylylenediamine and a dicarboxylic acid (B) containing 50 mol % or more of a dicarboxylic acid structural unit derived from sebacic acid, and has a concentration of reactive functional groups of 100 μeq/g or more and a molar ratio of reacted diamine to reacted dicarboxylic acid (the number of moles of reacted diamine/the number of moles of reacted dicarboxylic acid) of 1.0 or more. 1. A reactive polyamide resin obtained by polycondensing:(A) a diamine comprising 70 mol % or more of a diamine structural unit derived from a xylylenediamine; and(B) a dicarboxylic acid comprising 50 mol % or more of a dicarboxylic acid structural unit derived from sebacic acid,wherein:the reactive polyamide resin has a concentration of reactive functional groups of 100 μeq/g or more;the reactive polyamide resin has a molar ratio of reacted diamine to reacted dicarboxylic acid (the number of moles of reacted diamine/the number of moles of reacted dicarboxylic acid) of 1.0 or more; andthe reactive functional groups are a carboxylic group, an amino group, or both.2. The reactive polyamide resin according to claim 1 , wherein the reactive functional groups are located at ends of the polyamide resin.3. (canceled)4. The reactive polyamide resin according to claim 1 , which has an amino group concentration of 50 μeq/g or more.5. The reactive polyamide resin according to claim 1 , which has a number average molecular weight of 20 claim 1 ,000 or less.6. The reactive polyamide resin according to claim 1 , wherein the xylylenediamine is m-xylylenediamine or p-xylylenediamine.7. The reactive ...

Crosslinked blends of polyphenylene sulfide and polyphenylsulfone for downhole applications, methods of manufacture, and uses thereof

A composition includes a crosslinked product of a polyphenylene sulfide and a polyphenylsulfone. A method for the manufacture of the crosslinked product of a polyphenylene sulfide and a polyphenylsulfone includes heating the polyphenylene sulfide and the polyphenylsulfone in presence of a crosslinking agent at a temperature and for a time effective to form the crosslinked product of polyphenylene sulfide and polyphenylsulfone.

Flame-Proof Agent-Stabiliser Combination for Thermoplastic and Duroplastic Polymers

The invention relates to a flameproof agent stabiliser combination containing, as component A 40-99 wt. % of a phosphinic acid salt of formula (I) and/or a diphosphinic acid salt of formula (II) and/or polymers thereof, wherein R, Rare the same or different and represent C-C-alkyl linear, branched or cyclic, C-C-aryl, C-C-arylalkyl and/or C-C-alkylaryl; Rrepresents C-C-alkylene, linear or branched, C-C-arylene, C-C-alkylarylene or C-C-arylalkylene; M represents Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and/or a protoned nitrogen base; m represents 1-4; n represents 1-4; x represents 1-4, as component B 1-60 wt. % of a phosphinic acid salt of general formula (III) wherein Rrepresents C-C-alkyl linear, branched or cyclic, C-C-aryl, C-C-arylalkyl or C-C-alkylaryl and M represents Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and/or a protonated nitrogen base, as component C 0-50 wt. % of a synergist containing nitrogen and/or a phosphorous/nitrogen flameproof agent, as component D 0-10 wt. % of a zinc salt and/or a basic or amphoteric oxide, hydroxide, carbonate, silicate, borate, stannate, mixed oxide-hydroxide, oxide-hydroxide-carbonate, hydroxide-silicate and/or hydroxide-borate and/or mixtures of said substances, as component E 0-10 wt. % phosphonite or phosphonite/phosphite-mixture and as component F 0-10 wt. % ester and/or salts of long-chained fatty acids having 14-40 C-atom, the total of the components always amounting to 100 wt. %, under the proviso that if Rrepresents C-C-alkyl, then at least one of the groups Rand/or Rrepresent C-C-aryl, C-C-arylalkyl and/or C-C-alkylaryl. 2. The flame retardant-stabilizer combination as claimed in claim 1 , wherein R claim 1 , Rare the same or different and are each linear claim 1 , branched or cyclic C-C-alkyl and Ris C-C-aryl claim 1 , C-C-arylalkyl or C-C-alkylaryl.3. The flame retardant-stabilizer combination as claimed in claim 1 , wherein at least one of the RRgroups or both ...

HIGH-VISCOSITY POLYAMIDE COMPOSITION

A high-viscosity polyamide composition including a branched polyamide is described. Also described, is a relationship between a high-viscosity polyamide composition and a composition including a copolyamide of a statistical tree type resulting from a reaction between a multifunctional monomer including at least three reactive functions in order to form an amide function. Further described, are three reactive functions of two different types and bifunctional monomers used in the manufacture of linear polyamides. A resulting copolyamide can have a very low melt flow index relative to the linear polyamide and improved impact resistance properties. Lastly, use of such a composition for extrusion blow-molding articles is described. 1. A composition obtained by blending at least: {'br': None, 'sub': 1', '2', 'n, '(AR)—R—(RB)\u2003\u2003(I)'}, 'one polyfunctional monomer corresponding to the following a general formula I, 'a) one copolyamide having a random tree structure, which results from a reaction between at least{'sub': 1', '2, 'claim-text': [ [{'br': None, 'sub': 1', '3', '1, 'A-R-A\u2003\u2003(II)'}, {'br': None, 'sub': 1', '4', '1, 'B—R—B\u2003\u2003(III)'}, {'br': None, 'and'}, {'br': None, 'sub': 1', '6', '1, 'A-R—Bor the corresponding lactams\u2003\u2003(IV)'}], 'at least one bifunctional monomer of following formula II to IV, [{'br': None, 'sub': 6', '1, 'R—B\u2003\u2003(V),'}, {'br': None, 'and'}, {'br': None, 'sub': 7', '1, 'R-A\u2003\u2003(VI)'}], 'with optionally at least one monofunctional monomer of formula V or formula VI], 'in which: n is an integer between 2 and 10 (limits included), Rand Rcan be identical or different and represent a covalent bond or an aliphatic, arylaliphatic, aromatic or alkylaromatic hydrocarbon radical, R is a linear or branched aliphatic radical, a substituted or unsubstituted cycloaliphatic radical, a substituted or unsubstituted aromatic radical which can comprise several aromatic rings and/or heteroketones, A represents an ...

INJECTION MOLDED PARTS PRODUCED FROM A POLYMER COMPOSITION COMPRISING POLYAMIDE 410 (PA-410)

Injection molded polymeric part produced from a polymer composition comprising polyamide 410 (PA-410) and less than 1.5 weight % of a mold release agent. In a preferred embodiment the polymer composition contains less than 1 wt. % of a mold release agent. 1. Injection molded polymeric part characterized in that the part is produced from a polymer composition comprising polyamide 410 (PA-410) and less than 1.5 weight % of a mold release agent.2. Injection molded part according to claim 1 , wherein the polymer composition containsA. 20-100 parts by weight (pbw) PA-410B. One or more further polymers,Whereby A and B add up to 100 pbw.3. Injection molded part according to claim 1 , wherein the polymer composition contains less than 1 wt. % of a mold release agent.4. Injection molded part according to claim 1 , wherein the polymer composition contains less than 0.5 wt. % of a mold release agent.5. Injection molded part according to claim 1 , wherein the polymer composition contains less than 0.3 wt. % of a mold release agent.6. Injection molded part according to claim 1 , wherein the part has a weight of at least 100 grams.7. Injection molded part according to claim 1 , wherein the part has a weight of at least 200 grams.8. Injection molded part according to claim 1 , wherein the polymer composition does not contain glass fibers and wherein the part comprises one or more release angles of less than 1° 30′.9. Injection molded part according to claim 1 , wherein the polymer composition does not contain glass fibers and wherein the part comprises one or more release angles of less than 1°.10. Injection molded part according to claim 1 , wherein the polymer composition does not contain glass fibers and wherein the part comprises one or more release angles of less than 50′.11. Injection molded part according to claim 1 , wherein the polymer composition contains glass fibers and wherein the part comprises one or more release angles of less than 30′.12. Injection molded part ...

THERMOPLASTIC COMPOSITION BASED ON POLYAMIDE, POLYKETONE AND NOVOLAC RESIN

A thermoplastic composition based on polyamide and polyketone is described. The thermoplastic composition can have an excellent mechanical strength and dimensional stability. Further, the composition can include a novolac resin and a reinforcing or a bulking filler. The composition can be molded, for example in the form of granules or powder, which is used for manufacturing articles via an injection-molding process. 1. A composition obtained by melt blending the following compounds: a polyamide , a polyketone and a novolac resin.2. The composition as described by claim 1 , wherein the composition comprises:30% to 95% by weight of a polyamide;1% to 50% by weight of a polyketone; and1% to 20% by weight of a novolac resin, with respect to the total weight of the composition.3. The composition as described by claim 1 , wherein the polyamide is selected from the group consisting of: a PA 66 claim 1 , a PA 610 claim 1 , a PA 612 claim 1 , a PA 6.66 claim 1 , a PA 46 claim 1 , a MXD6 claim 1 , a PA 66/6T claim 1 , a PA 6 claim 1 , a PA 11 and a PA 12.4. The composition as described by claim 1 , wherein the polyketone is aliphatic.5. The composition as described by claim 1 , wherein the polyketone is represented by the formula:{'br': None, 'sub': 2', '2', 'x', 'y, '—(CO—CH—CH)—(CO-A)—'}in which A denotes an unsaturated monomer having at least 3 carbon atoms and the x/y ratio is at least 2.6. The composition as described by claim 1 , wherein the polyketone is a copolymer of ethylene and carbon oxide.7. The composition as described by claim 1 , wherein the composition comprises a reinforcing or bulking filler and/or an impact modifier.8. A method of reinforcing mechanical properties of a polyamide claim 1 , the method comprising incorporating a novolac resin and a polyketone to reinforce the mechanical properties of the polyamide.9. The composition as described by claim 1 , wherein the polyketone is a copolymer of ethylene claim 1 , propylene and carbon oxide. The present ...

METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITIONS

Provided is a method for producing thermoplastic resin compositions, the method comprising the step of melt-blending (A) a thermoplastic elastomer composition, obtained by dispersing (ii) an acid anhydride-modified or epoxy-modified rubber in (i) an ethylene-vinyl alcohol copolymer, with (B-1) a resin composition comprising at least one resin selected from (i) unmodified polyamide resins and modified polyamide resins or (B-2) a thermoplastic elastomer composition obtained by dispersing (ii) an acid anhydride-modified or epoxy-modified rubber in (i) at least one resin selected from unmodified polyamide resins and modified polyamide resins. Said thermoplastic elastomer composition has excellent gas barrier properties and the decrease in gas barrier properties associated with fatigue has been reduced. 1. A method for preparing a thermoplastic resin composition comprising melt-mixing(A) a thermoplastic elastomer composition comprising (i) an ethylene-vinyl alcohol copolymer and (ii) an acid anhydride-modified or epoxy-modified rubber dispersed therein, with(B-1) (i) a resin composition comprising at least one resin selected from unmodified polyamide resins and modified polyamide resins, or(B-2) a thermoplastic elastomer composition comprising (i) at least one resin selected from unmodified polyamide resins and modified polyamide resins, and (ii) an acid anhydride-modified or epoxy-modified rubber dispersed therein.2. The method for preparing a thermoplastic resin composition according to claim 1 , comprising melt-mixing thermoplastic elastomer composition (A) with thermoplastic elastomer composition (B-2).3. The method according to claim 1 , wherein the weight ratio of thermoplastic elastomer composition (A) to resin composition (B-1) or thermoplastic elastomer composition (B-2) is 5:95 to 95:5.4. The method according to claim 1 , wherein the weight ratio of thermoplastic elastomer composition (A) to resin composition (B-1) or thermoplastic elastomer composition (B-2) ...

AQUEOUS DISPERSION OF POLYAMIDE RUBBER ELASTIC BODY AND METHOD OF PRODUCING THE SAME

An aqueous dispersion of polyamide rubber elastic body, which contains an aqueous medium and a polyamide rubber elastic body emulsified and dispersed in the aqueous medium in the presence of a surfactant. The surfactant is used in an amount of 1 to 20 parts by weight based on 100 parts by weight of the polyamide rubber elastic body, and is for example at least one member selected from the group consisting of a polyoxyalkylene alkyl ether sulfate, a dialkyl sulfosuccinate, a fatty acid salt and an ethylene oxide/propylene oxide copolymer. This aqueous dispersion can produce a molded article having the characteristics of the polyamide rubber elastic body, particularly a molded article which hardly suffers from bleeding of the surfactant and is excellent in transparency. 1. A method of producing an aqueous dispersion of polyamide rubber elastic body , comprising the steps of:preparing a mixture containing a polyamide rubber elastic body, a surfactant and an aqueous medium, andemulsifying the mixture at a temperature not lower than the softening temperature of the polyamide rubber elastic body,wherein the polyamide rubber elastic body has a structure in which a rigid polymer system having a crystalline polyamide block with a high melting point is combined with a soft polymer system having a noncrystalline polyether block with a low glass transition temperature, and the surfactant is used in an amount of 1 to 20 parts by weight based on 100 parts by weight of the polyamide rubber elastic body.2. The method of producing an aqueous dispersion of polyamide rubber elastic body according to claim 1 , wherein the polyamide rubber elastic body is a polyether block amide copolymer or a polyether ester block amide copolymer.3. The method of producing an aqueous dispersion of polyamide rubber elastic body according to claim 1 , wherein the surfactant is at least one member selected from the group consisting of a polyoxyalkylene alkyl ether sulfate claim 1 , a dialkyl ...

RECYCLING POLYAMIDE AIRBAGS

A method for making a polyamide composition, in particular for molding, prepared by mixing a polyamide material, a powder made from airbag scraps, and optionally reinforcing fillers is desribed. Also described, is a method for recycling used airbags. 1. A process for manufacturing a polyamide composition , the process comprising at least one step of mixing , without heating or providing in a molten state , a polyamide material with a safety airbag residue powder.2. The process as defined by claim 1 , wherein the powder is obtained from safety airbags comprising polyamide claim 1 , polyester claim 1 , polypropylene or polyurethane.3. The process as defined by claim 1 , wherein the residue comprises a coating comprising silicone claim 1 , polychloroprene claim 1 , polyurethane claim 1 , polyacrylate claim 1 , polyamide claim 1 , polyester or elastomeric polymer.4. The process as defined by claim 1 , wherein the powder has a particle size distribution of from 50 μm to 400 μm.5. The process as defined by claim 1 , wherein the powder comprises spherical or substantially spherical particles and/or fibrous particles.6. The process as defined by claim 1 , wherein the mixing is performed without heating and is followed by melting of the mixture.7. The process as defined by claim 1 , wherein the mixing is performed with heating.8. The process as defined by claim 1 , wherein from 0.5% to 70% by weight of residue is mixed relative to the total weight of the composition.9. The process as defined by claim 1 , wherein the polyamide material is added to the residue in the form of virgin polyamide granules or in the form of granules comprising a reinforcing or bulking filler and another additive.10. The process as defined by claim 1 , further comprising adding a reinforcing or bulking filler wherein the reinforcing or bulking filler is selected from the group consisting of a fibrous filler and a non-fibrous mineral filler.11. A polyamide composition obtained via the process defined ...

COMPOSITIONS, METHODS AND ARTICLES PRODUCED BY COMPOUNDING POLYAMIDES WITH OLEFIN-MALEIC ANHYDRIDE POLYMERS

The disclosure of the present application provides compositions and methods of compounding polyamides comprising the steps of forming a polyamide mixture, comprising a polyamide with an olefin maleic anhydride copolymer, and compounding the polyamide mixture at its processing temperature. Compounded polyamides derived from recycled nylon and other recycled polyamides and methods for preparing the compounded polyamides are described. 1. A thermoplastic pelletizable polymer composition comprising:(a) a polyamide; and(b) a polymer polymerized from maleic anhydride and an olefin; wherein the polyamide and the polymer are compounded.2. The thermoplastic pelletizable polymer composition of wherein the polyamide is selected from the group consisting of nylon-6 claim 1 , nylon 6-6 claim 1 , a copolymer of nylon-6 and nylon 6-6 claim 1 , nylon-9 claim 1 , nylon-10 claim 1 , nylon-11 claim 1 , nylon-12 claim 1 , nylon 6-10 claim 1 , aromatic polyamides claim 1 , elastomeric polyamides claim 1 , and mixtures thereof.3. (canceled)4. The thermoplastic pelletizable polymer composition of wherein the olefin is selected from the group consisting of ethylene claim 1 , propylene claim 1 , isobutylene claim 1 , butene-1 claim 1 , octene claim 1 , butadiene claim 1 , styrene claim 1 , isoprene claim 1 , hexene claim 1 , dodecene claim 1 , dodecene-1 claim 1 , and tetradecene.5. The thermoplastic pelletizable polymer composition of wherein the olefin is ethylene.6. A cross-linked polymer composition comprising:(a) a polyamide, and(b) a polymer polymerized from maleic anhydride and an olefin; wherein the polyamide and the polymer are compounded at a processing temperature wherein the processing temperature is sufficient to promote cross-linking.7. The cross-linked polymer composition of wherein the polyamide is selected from the group consisting of nylon-6 claim 6 , nylon 6-6 claim 6 , a copolymer of nylon-6 and nylon 6-6 claim 6 , nylon-9 claim 6 , nylon-10 claim 6 , nylon-11 claim 6 , ...

POLYAMIDE COMPOSITION FOR SURFACE-MOUNTED COMPONENTS

A polyamide composition for surface-mounted components is described. Also described are compositions for surface-mounted components (SMCs) including a semiaromatic polyamide modified by a hydroxyaromatic compound, reinforcing fillers, and a flame retardant. Further, the compositions have many advantages linked to the uses thereof in lead-free reflow soldering processes, in particular a good dimensional stability and a blistering resistance during the use of articles produced from these compositions. 1. A component for surface mounting obtained at least from a composition comprising at least a semiaromatic polyamide modified by an aromatic hydroxyl compound , a reinforcing filler glom; and a flame retardant.2. The component as defined in claim 1 , wherein 5 mol % to 50 mol % of the monomers used in the semiaromatic polyamide are monomers comprising aromatic groups claim 1 , including an aromatic hydroxyl compound.3. The component as defined in claim 1 , wherein the polyamide is selected from the group consisting of: polyamide 6T claim 1 , polyamide 66/6T claim 1 , polyamide 61 claim 1 , polyamide 66/61 claim 1 , polyamide 6T/61 claim 1 , copolyamide6/6T of differing molar compositions and blends thereof.4. The component as defined in claim 1 , wherein the polyamide has a melting point of from 150° C. and 340° C.5. The component as defined in claim 1 , wherein the composition comprises 30% to 75% by weight of polyamide claim 1 , with respect to the total weight of the composition.6. The component as defined in claim 1 , wherein the aromatic hydroxyl compound has at least one function that can react with the functions of the polyamide or the polyamide monomers.7. The component as defined in claim 1 , wherein the aromatic hydroxyl compound is represented by the following formula (I):{'br': None, 'sub': x', 'n, '(HO)—Z—(F)\u2003\u2003(I)'} Z is a multivalent aromatic or arylaliphatic hydrocarbon radical;', 'x is from 1 to 10;', 'F is an acid, aldehyde, amine or ketone ...

METHOD FOR PRODUCING THERMOPLASTIC RESIN COMPOSITION

A method for producing a thermoplastic resin composition, comprising the steps of: (I) melt-kneading (A) acid anhydride-modified or epoxy-modified rubber with (B) ethylene-vinylalcohol copolymer resin to prepare a first resin composition in which (A) acid anhydride-modified or epoxy-modified rubber is dispersed in (B) ethylene-vinylalcohol copolymer resin, (II) crosslinking (C) crosslinkable elastomer while melt-kneading the crosslinkable elastomer with (D) polyamide resin to prepare a second resin composition in which crosslinked elastomer particles are dispersed in (D) polyamide resin, and (III) melt-mixing together the first resin composition with the second resin composition. The thermoplastic resin composition has excellent gas barrier properties, low-temperature durability, and fatigue resistance. 1. A method for producing a thermoplastic resin composition , comprising the steps of:(I) melt-kneading (A) acid anhydride-modified or epoxy-modified rubber with (B) ethylene-vinylalcohol copolymer resin to prepare a first resin composition in which (A) acid anhydride-modified or epoxy-modified rubber is dispersed in (B) ethylene-vinylalcohol copolymer resin,(II) crosslinking (C) crosslinkable elastomer while melt-kneading the crosslinkable elastomer with (D) polyamide resin to prepare a second resin composition in which crosslinked elastomer particles are dispersed in (D) polyamide resin, and(III) melt-mixing together the first resin composition with the second resin composition.2. The method for producing a thermoplastic resin composition according to claim 1 , in which (A) acid anhydride-modified or epoxy-modified rubber is selected from the group consisting of ethylene-α-olefin copolymers and the acid anhydride-modified products and epoxy-modified products of their derivatives claim 1 , ethylene-unsaturated carboxylic acid copolymers and acid anhydride-modified products and epoxy-modified products of their derivatives claim 1 , and combinations thereof.3. The ...

PARTICLES COMPRISING COMPOSITE OF PARA-ARAMID AND ADDITIVE MATERIAL

The invention pertains to a method for making a polymer-additive composite particle from a dope by jet spinning the dope to obtain a pulp, fibril or fibrid, wherein the solvent of the dope is selected from N-methyl-2-pyrrolidone, N,N′-dimethylformamide, N,N′-dimethylacetamide, tetramethylurea, and 4 to 75 wt % of a composition consisting of 2 to 95 wt % of a para-aramid polymer and 5-98 wt % of a solid additive material, to a total of 100 wt %, and wherein the aramid polymer is dissolved in the solvent; or coagulating the dope by means of a rotor-stator apparatus in which the polymer solution is applied through the stator on the rotor so that the precipitating polymer-additive composite particle is subjected to shear forces while they are in a plastic deformable stage. 1. A dope comprising (a) a solvent selected from the group consisting of N-methyl-2-pyrrolidone , N ,N′-dimethylformamide , N ,N′-dimethylacetamide , tetramethylurea , and mixtures thereof; (b) an alkali or earth alkali chloride; and (c) 4 to 75 wt % of a composition consisting of poly(para-phenylene terephthalamide) and a solid additive material , the poly(para-phenylene terephthalamide) being present in the composition in an amount of 2 to 80 wt % and the solid additive material being present in the composition in an amount of 20 to 98 wt %; wherein the poly(para-phenylene terephthalamide) is dissolved in a mixture of the alkali or earth alkali chloride and the solvent.2. The dope of claim 1 , wherein the mixture further includes water and the dope comprises (a) 1 to 8 wt % of the poly(para-phenylene terephtalamide); and (b) between 0.7 mole of the alkali or earth alkali chloride per mole amide groups of the poly(para-phenylene terephthalamide) and 7.5 wt % of the alkali or earth alkali chloride based on the weight of the mixture claim 1 , wherein the poly(para-phenylene terephthalamide) is dissolved in the mixture claim 1 , and (c) hydrochloric acid and/or neutralized hydrochloric acid; wherein at ...

Substrate structure and method for making the same

A substrate structure includes a support, a release layer releasably disposed on the support, and a flexible substrate disposed on the release layer. The release layer is made from a polymer composition including a polymer component obtained by subjecting a diamine component (A) and a tetracarboxylic dianhydride component (B) to a polymerization reaction.

POLYAMIDE COMPOSITION CONTAINING IONOMER

Disclosed is a composition comprising polyamide comprising nylon-6/12 or a polyamide comprising a first repeat unit of formula (I) 2. The article of wherein the at least one copolymer is a dipolymer consisting essentially of copolymerized comonomers of ethylene and 12 to 20 weight % of acrylic acid or methacrylic acid.3. The article of wherein copolymerized units of alkyl acrylate or alkyl methacrylate are present in the copolymer from 0.1 to about 30 weight %.4. The article of wherein the salts consist essentially of zinc cations.5. The article of wherein the salts comprise a mixture of zinc and sodium cations.6. The article of wherein the salts comprise a mixture of zinc and lithium cations.7. The article of wherein the polyamide consists essentially of nylon-6/12.8. The article of wherein the polyamide consists essentially of (2).9. The article of wherein the composition further comprises non-ionomeric thermoplastic materials.10. The article of comprising from 1 to 15 weight % of an impact modifier comprising polyethylene claim 9 , ethylene-propylene dipolymer claim 9 , ethylene-propylene terpolymer with an additional α-olefin claim 9 , or ethylenepropylene diene mononomer claim 9 , each grafted with a carboxylic acid or anhydride.11. The article of wherein the polyamide consists essentially of nylon-6/12.12. The article of wherein the polyamide consists essentially of (2).13. The article of wherein the composition further comprises a sulfonamide plasticizer.14. The article of wherein the blend composition exhibits salt stress crack behavior when tested according to ASTM D1693 that is characterized by standard test plaques that exhibit no cracks when exposed to 50% aqueous zinc chloride solution at about 45 to about 55° C. for at least 24 hours.15. The article of wherein standard test plaques exhibit no cracks when exposed to 50% aqueous zinc chloride solution at about 45 to about 55° C. for at least seven days.16. The article of wherein the article is a hose ...

PROCESS FOR PRODUCING A MOULDING FROM A POLYAMIDE MOULDING COMPOSITION WITH IMPROVED HYDROLYSIS RESISTANCE

A process for producing hydrolysis-resistant mouldings with geometries having large dimensions by cumulative condensation of a polyamide moulding composition, is provided. The process includes mixing a polyamide moulding composition of a polyamide having at least 50% of amino end groups with 0.1 to 5% by weight, based on the polyamide moulding composition, of an oligo- or polycarbodiimide. The mixture is subsequently processed to give the moulding, wherein cumulative condensation is obtained during the processing of the moulding. 1. A process for producing a moulding , comprising:mixing a polyamide having amino end groups and an oligo- or polycarbodiimide to prepare a moulding composition;optionally, storing the prepared composition, transporting the prepared composition or storing and transporting the prepared composition;processing the moulding composition to obtain a moulding having cumulative condensation;whereinat least 50% of end groups of the polyamide are amino groups,.a content of the oligo- or polycarbodiimide is 0.1 to 5% by weight, based on the polyamide moulding composition, andthe cumulative condensation is obtained only during the processing to form the moulding.2. The process according to claim 1 , further comprising:preparing a masterbatch comprising the oligo- or polycarbodiimide and at least one of a polyamide and a polyetheramide; andusing the masterbatch to supply the oligo- or polycarbodiimide which is mixed with the polyamide to prepare the moulding composition.3. The process according to claim 2 ,whereina concentration of the oligo- or polycarbodiimide in the masterbatch is from 0.15 to 40% by weight of the masterbatch.4. The process according to claim 1 , further comprising:adding an at least difunctional, amine-reactive compound to the moulding composition;whereina content of the difunctional amine-reactive based on the weight of the moulding composition is from 0.1 to 5% by weight.5. The process according to claim 2 , further comprising: ...

Polyamide Resin Composition Having Improved Physical Properties Including Thin-wall Moldability

A polyamide resin composition comprises (A) about 10 to about 70% by weight of a crystalline polyamide resin, (B) about 10 to about 70% by weight of an amorphous polyamide resin, (C) about 5 to about 30% by weight of an inorganic filler, and (D) about 10 to about 50% by weight of a white pigment. The polyamide resin composition can have good thin-wall moldability, light reflectance, yellowing resistance, impact strength and heat resistance. 1. A polyamide resin composition comprising:(A) about 10 to about 70% by weight of a crystalline polyamide resin;(B) about 10 to about 70% by weight of an amorphous polyamide resin;(C) about 5 to about 30% by weight of an inorganic filler; and(D) about 10 to about 50% by weight of a white pigment.2. The polyamide resin composition of claim 1 , wherein the polyamide resin composition further comprises (E) about 0.01 to about 2 parts by weight of a light stabilizer based on about 100 parts by weight of the crystalline polyamide resin (A) claim 1 , the amorphous polyamide resin (B) claim 1 , the inorganic filler (C) and the white pigment (D).3. The polyamide resin composition of claim 1 , wherein the polyamide resin composition further comprises (F) about 0.01 to about 2 parts by weight of a sodium phosphate salt based on about 100 parts by weight of the crystalline polyamide resin (A) claim 1 , the amorphous polyamide resin (B) claim 1 , the inorganic filler (C) and the white pigment (D).4. The polyamide resin composition of claim 1 , wherein the crystalline polyamide resin (A) has a repeating unit derived from a dicarboxylic acid including an aromatic dicarboxylic acid and an aliphatic diamine claim 1 , cycloaliphatic diamine claim 1 , or a combination thereof.6. The polyamide resin composition of claim 1 , wherein the crystalline polyamide resin (A) has a crystallization temperature of about 260 to about 320° C. measured by differential scanning calorimetry (DSC) and a glass transition temperature of less than about 130° C. ...

Polyphenylene Sulfide Resin Composition with Improved Thermal Conductivity and Surface Appearance and Articles Thereof

A polyphenylene sulfide resin composition comprises (A) about 30 to about 50% by weight of a polyphenylene sulfide resin; (B) about 1 to about 5% by weight of an amorphous polyamide resin; and (C) about 45 to about 69% by weight thermally conductive insulating fillers. 1. A polyphenylene sulfide resin composition comprising:(A) about 30 to about 50 wt % of a polyphenylene sulfide resin;(B) about 1 to about 5 wt % of an amorphous polyamide resin; and(C) about 45 to about 69 wt % of thermally conductive insulating fillers.2. The polyphenylene sulfide resin composition of claim 1 , wherein the polyphenylene sulfide resin (A) has a weight average molecular weight of about 3 claim 1 ,000 to about 50 claim 1 ,000 g/mol.3. The polyphenylene sulfide resin composition of claim 1 , wherein the amorphous polyamide resin (B) has a glass transition temperature (Tg) about 110 to about 200° C.5. The polyphenylene sulfide resin composition of claim 1 , wherein the amorphous polyamide resin (B) includes polyamide prepared from terephthalic acid and 2 claim 1 ,2 claim 1 ,4-trimethyl hexamethylene diamine or 2 claim 1 ,4 claim 1 ,4-trimethyl hexamethylene diamine; polyamide prepared from isophthalic acid and 1 claim 1 ,6-hexamethylene diamine; a copolyamide prepared from a combination of terephthalic acid/isophthalic acid and 1 claim 1 ,6-hexamethylene diamine; a copolyamide prepared from isophthalic acid claim 1 , 3 claim 1 ,3′-dimethyl-4 claim 1 ,4′-diamino dicyclohexylmethane claim 1 , and laurolactam or lactam; copolyamide prepared from a combination of terephthalic acid/isophthalic acid claim 1 , 3 claim 1 ,3′-dimethyl-4 claim 1 ,4′-diamino dicyclo hexylmethane and laurolactam claim 1 , or a combination thereof.6. The polyphenylene sulfide resin composition of claim 1 , wherein the thermally conductive insulating fillers (C) include spherical thermally conductive insulating fillers (c1) claim 1 , plate-shaped thermally conductive insulating fillers (c2) or a combination thereof.7 ...

Thermoplastic elastomer compositions

Disclosed is a thermoplastic elastomer composition comprising (i) about 10-60 wt % of at least one aliphatic polyamide; (ii) about 0.8-15 wt % of at least one graft-modified ethylene-olefin elastomeric copolymer; (iii) about 0.8-15 wt % of at least one graft-modified ethylene-propylene elastomeric copolymer, and (iv) about 35-85 wt % of at least one polyether-ester-amide block copolymer having a shore D of about 50-60 (as measured in accordance with ASTM D2240), with the total wt % of all components in the composition totaling to 100 wt %. Further disclosed herein is an article made from the thermoplastic elastomer composition disclosed above.

FUEL PART

This invention relates to a fuel part, comprising a polymer composition comprising at least 1 wt % with respect to the total weight of polymer in the polymer composition of a component A, being an aliphatic, semi-crystalline, polyamide which has as building blocks diamines with at least 2 carbon atoms and at most 5 carbon atoms and diacids with at least 10 carbon atoms. The invention also relates to a process for preparation of such fuel part. 1. Fuel part , comprising a polymer composition comprising at least 1 wt % with respect to the total weight of polymer in the polymer composition of a component A , being an aliphatic , semi-crystalline , polyamide which has as building blocks diamines with at least 2 carbon atoms and at most 5 carbon atoms and diacids with at least 10 carbon atoms.2. Fuel part according to claim 1 , in which component A is linear.3. Fuel part according to claim 1 , characterized in that the diacid with at least 10 carbon atoms is decanedioic acid.4. Fuel part according to claim 1 , characterized in that the diamine with at least 2 carbon atoms and at most 5 carbon atoms is butane-1 claim 1 ,4-diamine.5. Fuel part according to claim 1 , characterized in that the diacid with at least 10 carbon atoms is decanedioic acid and the diamine with at least 2 carbon atoms and at most 5 carbon atoms is butane-1 claim 1 ,4-diamine.6. Fuel part according to claim 1 , characterized in that the amount of component A is at least 70 wt % with respect to the total weight of polymer in the polymer composition.7. Fuel part according to claim 1 , in which the polymer composition further comprises at least 5 wt % with respect to the total weight of polymer in the polymer composition of a component B.8. Fuel part according to claim 7 , characterized in that component B is chosen from the group of polyamide-6 claim 7 , polyamide-66 or polyamide-46 claim 7 , and polyamide-12.9. Process for preparation of a fuel part according claim 1 , characterized in that a polymer ...

POLYMER MICROPARTICLES AND PROCESS FOR PRODUCTION THEREOF

A process of producing polymer microparticles wherein, in a system which includes a polymer (A), a polymer (B) and an organic solvent and can cause phase separation into two phases of a solution phase mainly composed of the polymer (A) and a solution phase mainly composed of the polymer (B) when the polymer (A), the polymer (B) and the organic solvent are dissolved and mixed together, after an emulsion is formed at a temperature of 100° C. or higher, the polymer (A) is precipitated by bringing a poor solvent for the polymer (A) into contact with the emulsion. 1. A process of producing polymer microparticles wherein , in a system which comprises a polymer (A) , a polymer (B) and an organic solvent and can cause phase separation into two phases of a solution phase mainly composed of said polymer (A) and a solution phase mainly composed of said polymer (B) when said polymer (A) , said polymer (B) and said organic solvent are dissolved and mixed together , after an emulsion is formed at a temperature of 100° C. , said polymer (A) is precipitated by bringing a poor solvent for said polymer (A) into contact with said emulsion.2. The process according to claim 1 , wherein said polymer (A) is a crystalline thermoplastic resin having a melting point of 100° C. or higher.3. The process according to claim 1 , wherein said polymer (A) is a crystalline thermoplastic resin containing at least one structural unit selected from the group consisting of an amide unit claim 1 , an ester unit claim 1 , a sulfide unit and a carbonate unit claim 1 , in a molecular principal chain structure of said polymer (A).4. The process according to claim 1 , wherein said polymer (A) is a crystalline thermoplastic resin selected from the group consisting of a polyimide group claim 1 , a polyester group and a polyphenylene sulfide group.5. The process according to claim 1 , wherein an SP value of said polymer (B) is 20 (J/cm)or higher.6. The process according to claim 1 , wherein solubility into water ...

POWDER COMPRISING POLYMER-COATED POLYMERIC CORE PARTICLES

The invention relates to powder, comprising composite particles comprising core particles completely or partially coated with a precipitated first polymer, where the core particles comprise a second polymer which differs from the precipitated first polymer, and where the ratio of the dmedian diameter of the composite particles to the dmedian diameter of the core particles is 1.15 or greater. The invention further relates to processes of using the powders of the present invention to making mouldings. 1. A powder , comprising composite particles comprising core particles completely or partially coated with a precipitated first polymer , where the core particles comprise a second polymer which differs from the precipitated first polymer , and where the ratio of the dmedian diameter of the composite particles to the dmedian diameter of the core particles is 1.15 or greater.2. A powder according to claim 1 , wherein the core particles consist of the second polymer.3. A powder according to claim 1 , wherein the second polymer is selected from the group consisting of a polycarbonate claim 1 , a polymethyl methacrylate claim 1 , a polypropylene claim 1 , a polybutylene terephthalate claim 1 , a polyethylene terephthalate claim 1 , a polyether ether ketone and a polyphthalamide.4. A powder according to claim 1 , wherein the precipitated first polymer is selected from the group consisting of a polyolefin claim 1 , a polyethylene claim 1 , a polypropylene claim 1 , a polyvinyl chloride claim 1 , a polyacetal claim 1 , a polystyrene claim 1 , a polyimide claim 1 , a polysulphone claim 1 , a poly(N-methylmethacrylimide) claim 1 , a polymethyl methacrylate claim 1 , a polyvinylidene fluorides claim 1 , an ionomer claim 1 , a polyether ketone claim 1 , a polyaryl ether ketone claim 1 , a polyamide claim 1 , a copolyamide claim 1 , and a mixture thereof.5. A powder according to claim 1 , wherein the precipitated first polymer is a mixture of a homopolyamide and a copolyamide.6. A ...

PROCESS FOR THE MANUFACTURE OF A POLYAMIDE

The present invention relates to a process for the manufacture of polyamide. The invention relates more particularly to a process for the manufacture of polyamide from at least one diacid and from at least one diamine, comprising the introduction of lactam and/or of amino acid after a stage of concentration of an aqueous solution of salt of diacid and diamine. 1. A process for the manufacture of a polyimide , the process comprising manufacturing the polyamide from at least one diacid , from at least one diamine and from at least one lactam , the process further comprising the following stages:a) concentrating by evaporation of water, an aqueous solution of salt of diacid and diamine obtained by mixing at least one diacid and at least one diamine,b) polymerizing under pressure, the concentrated aqueous solution,c) reducing in pressure the polymerization medium in order to remove residual water by evaporation,d) optionally maintaining at temperature of the polymer, at atmospheric pressure or under reduced pressure, in order to obtain a desired degree of polymerization, ande) optionally forming of the polymer obtained,wherein the lactam is introduced into the solution or the polymerization medium at the end of stage a) or after stage a);and wherein a proportion of monomer units resulting from the lactam in the final polymer, by weight with respect to the weight of final polymer, is from 2.5% to 25%.2. The process as defined in claim 1 , wherein the lactam is introduced before stage d).3. The process as defined in claim 2 , wherein the lactam is introduced before stage b).4. The process as defined in claim 1 , wherein the aqueous solution of salt of diacid and diamine claim 1 , before it is concentrated according to stage a) claim 1 , does not comprise lactam.5. The process as defined in claim 1 , wherein the concentration by weight of salt in the aqueous solution of salt of diacid and diamine claim 1 , before stage a) claim 1 , is from 40% to 70%.6. The process as ...

Thermoplastic moulding compositions with increased hydrolysis resistance

This invention relates to thermoplastic moulding compositions comprising A) polyamide and/or copolyamide, B) at least one copolymer of at least one olefin and of at least one acrylate of an aliphatic alcohol, C) at least one filler and/or reinforcing material, D) at least one oligomeric and/or polymeric carbodiimide, and optionally also at least one other additive E) and optionally at least one impact modifier F). The invention further relates to mouldings or semifinished products which are produced from the moulding compositions according to the invention, preferably by means of injection moulding. However, the present invention also relates to the use of a substance combination made of at least one component B) and of at least one component D) for improving the hydrolysis resistance of polyamide-based products.

COMPOSITIONS COMPRISING LACTAM

The invention relates to a composition comprising the following components: 115-. (canceled)16. A composition comprising:(A) at least one lactam(B) at least one catalyst(C) an activator selected from the group consisting of of isocyanates, anhydrides, acyl halides, reaction products of these with (A), and mixtures of these(D) at least one non-functionalized rubber, which comprises no functional groups having heteroatoms(E) at least one hydroxy-terminated rubber.17. The composition according to comprising(A) from 50 to 99.5% by weight of at least one lactam(B) from 0.1 to 10% by weight of at least one catalyst(C) from 0.1 to 5% by weight of an activator selected from the group consisting of isocyanates, anhydrides, acyl halides, reaction products of these with (A), and mixtures of these(D) from 0.25 to 45% by weight of at least one non-functionalized rubber, which comprises no functional groups having heteroatoms(E) from 0.05 to 25% by weight of at least one hydroxy-terminated rubber, where the % by weight data are based on components (A) to (E) and the total here is 100% by weight.18. The composition according to claim 16 , where the weight-average molar mass of the non-functionalized rubber (D) is from 500 to 300 000 g/mol claim 16 , determined from GPC with light scattering in hexafluoroisopropanol (HFIP) at 40° C.19. The composition according to claim 16 , where the Tg value of the non-functionalized rubber (D) is from −150° C. to 25° C. claim 16 , determined under nitrogen as inert gas by Differential Scanning calorimetry (DSC) with a start temperature of −180° C. claim 16 , an end temperature of 200° C. claim 16 , and a heating rate of 20 [K/min].20. The composition according to claim 16 , where the weight-average molar mass determined by means of light scattering for the hydroxy-terminated rubber (E) is from 500 to 60 000 g/mol.21. The composition according to claim 16 , wherein component (D) comprises at least one non-functionalized styrene-butadiene block ...

Impact-resistant polyamide composition and process for production of same

Provided are: an impact-resistant polyamide composition which exhibits improved toughness and improved impact strength and which can be easily polymerized in-situ in a molding stage; and a novel process for the production of the same. The novel process comprises initiating the anionic polymerization of ε-caprolactam in the presence of (A) an anionic polymerization catalyst, (B) an anionic polymerization activator, (C) 2.0 to 30% by weight (relative to the ε-caprolactam) of an N,N-disubstituted vinylbenzylamine, and (D) a radical polymerization initiator, and subjecting the resulting system to reaction under conditions comprising a reaction temperature of the reaction system of 120 to 180° C. and a reaction time of 10 seconds to 120 minutes. Since radical polymerization in the process is conducted without hindering the anionic polymerization, an alloyed polyamide composed of both polycaprolactam and poly (N,N-disubstituted vinylbenzylamine) can be obtained.

Stain-resistant articles

The present invention relates to stain- or dye-resistant light colored articles comprising a polymer composition (C) comprising a semi-aromatic polyamide comprising recurring units resulting from the condensation of terephthalic acid, isophthalic acid and at least one aliphatic diamine comprising 6 carbon atoms, a filler and from 0.1 to 35 wt. % of a white pigment, based on the total weight of the polymer composition (C). 2. The article according to claim 1 , wherein the polymer composition (C) comprises at least 40 wt. % of the semi-aromatic polyamide claim 1 , based on the total weight of the polymer composition (C).3. The article according to claim 1 , wherein the polymer composition (C) comprises at least 20 wt. % of the filler claim 1 , based on the total weight of the polymer composition (C).4. The article according to claim 1 , wherein the polymer composition (C) comprises at least 1 wt. % of the white pigment claim 1 , based on the total weight of the polymer composition (C).5. The article according to claim 1 , wherein the filler is glass fiber or wollastonite.6. The article according to claim 1 , wherein the white pigment is selected from the group consisting of titanium dioxide claim 1 , barium sulfate and zinc sulfide.7. The article according to claim 1 , being an electronic equipment housing.8. The article according to claim 7 , being a portable electronic device housing.9. The article according to claim 8 , being a mobile telephone housing claim 8 , personal digital assistants housing claim 8 , laptop computers housing claim 8 , tablet computer housing claim 8 , global positioning system receiver housing claim 8 , portable game housing claim 8 , radio housing claim 8 , cameras housing or camera accessory housing.10. The article according to being an injection molded article claim 1 , an extruded molded article claim 1 , a shaped article claim 1 , a coated article or a casted article.11. A method for conferring anti-staining properties to an article ...

Peba-based composition and use thereof for the manufacture of a transparent article having high-velocity impact resistance

A copolymer containing polyether (PE) block(s) and polyamide (PE) block(s) issued for the manufacture of a transparent article having high-velocity impact resistance, and impact strength. In said copolymer: PA blocks comprise more than 50 mol % of an equimolar combination of at least one cycloaliphatic diamine and of at least one aliphatic dicarboxylic acid having from 12 to 36 carbon atoms, represent 20 to 90% by weight, out of the total weight of the copolymer, have a number-average molecular weight of 1000 to 10 000 g/mol, and the PE blocks represent 10 to 80% by weight, out of the total weight of the copolymer, and have a number-average molecular weight of 200-1000 g/mol.

Polybutylene terephthalate resin composition

To provide a polybutylene terephthalate resin composition having excellent tracking resistance, mechanical strength, and low-hygroscopicity, and being flame-retarded by a non-halogen-containing flame retardant. A polybutylene terephthalate resin composition is prepared by compounding polyamide resin, an organic phosphorous flame retardant, and a nitrogen-containing flame retardant assistant into polybutylene terephthalate resin, wherein the content of the polyamide resin is not less than 1 part by mass and not more than 15 parts by mass to 100 parts by mass of the polybutylene terephthalate resin.

FLAME RESISTANT POLYAMIDE RESIN COMPOSITION AND ARTICLES COMPRISING THE SAME

Disclosed is polyamide resin composition including a polyamide resin, at least one reinforcing agent, and at least one flame retardant, wherein, (a) the polyamide resin includes at least one aliphatic polyamide and an aromatic polyamide blend including at least one semi-crystalline semi-aromatic polyamide and at least one amorphous semi-aromatic polyamide; (b) based on the total weight of the polyamide resin, about 35 to about 70 wt % of the at least one aliphatic polyamide and about 30 to about 65 wt % of the aromatic polyamide blend are present in the polyamide resin; and (c) based on the total weight of the aromatic polyamide blend, about 15 to about 80 wt % of the at least one semi-crystalline semi-aromatic polyamide and about 20 to about 85 wt % of the at least one amorphous semi-aromatic polyamide are present in the aromatic polyamide blend. 1. A polyamide resin composition comprising a polyamide resin , at least one flame retardant , and at least one reinforcing agent , wherein ,a) the polyamide resin comprises at least one aliphatic polyamide and an aromatic polyamide blend comprising at least one semi-crystalline semi-aromatic polyamide and at least one amorphous semi-aromatic polyamide;b) based on the total weight of the polyamide resin, about 35 to about 70 wt % of the at least one aliphatic polyamide and about 30 to about 65 wt % of the aromatic polyamide blend are present in the polyamide resin; andc) based on the total weight of the aromatic polyamide blend, about 15 to about 80 wt % of the at least one semi-crystalline semi-aromatic polyamide and about 20 to about 85 wt % of the at least one amorphous semi-aromatic polyamide are present in the aromatic polyamide blend.2. The polyamide resin composition of claim 1 , wherein claim 1 ,a) based on the total weight of the polyamide resin, about 40 to about 70 wt %, or preferably about 45 to about 65 wt % of the at least one aliphatic polyamide and about 30 to about 60 wt %, or preferably about 35 to about ...

Extended Life Tire Curing Bladder Composed of Aramid Fibers

Disclosed is a mixture to create expandable curing bladders for use in the curing process of rubber compositions such as tires. The bladders have an increased service with the addition of the aramid fibers to the rubber polymer. The aramid fibers increase the tear resistance of the cured product allowing for an increased number of expansions and contractions of the rubber polymer during the curing process. The use of these aramid fibers allows the tire curing bladders to cure more tires without changing out the bladder increasing the cost efficiency of the tire curing bladder. 1. An extended life rubber composition comprising a mixture of:a. Butyl polymer;b. Neoprene or butyl rubber with aramid fibers;c. Carbon blackd. Process oil e. Zinc oxide; andf. Phenolic curing resinWhereby said aramid fibers are mixed and heated in a manner in which a resilient, flexible and strong matrix for tire curing bladder will be provided.2. An improved tire curing bladder comprises a cylindrical membrane of rubber according to wherein the said butyl or neoprene with aramid fibers having random locations within the butyl or neoprene dispersed through the mixing process.3. An improved tire curing bladder according to wherein said neoprene or butyl with aramid fibers comprises Kevlar pieces.4. Wherein said Kevlar pieces having lengths of 0.01 millimeters to 0.5 millimeters. This application is a continuation of U.S. patent application Ser. No. 13/058,209 filed Feb. 9, 2011, incorporated herein by reference.1. Field of InventionThis invention generally relates to resin cured synthetic polymers, and the process of preparing a desired rubber composition along with the method of using the same for making shapes that are uniquely designed to expand and contract under pressure to form automobile tires inside of a form.2. Background ArtThis invention relates to the composition of a tire curing bladder used to form automobile tires in a mold. The use of tire curing bladders is well known to ...

Polyamide resin composition, expanded polyamide resin molding, and automotive resin molding

Provided is a polyamide resin composition which can provide an expanded molding being superior in heat resistance and sufficiently reduced in weight and having high load resistance by a simple molding process. The polyamide resin composition is characterized by comprising a polyamide resin (A), a glycidyl-group-containing styrene copolymer (B) having two or more glycidyl groups per molecule, a weight average molecular weight of 4000 to 25000 and an epoxy value of 400 to 2500 Eq/1×10 6 g and an inorganic reinforcing material (C) in a proportion such that the content of the glycidyl-group-containing styrene copolymer (B) is 0.2 to 25 parts by mass and the content of the inorganic reinforcing material (C) is 0 to 350 parts by mass relative to 100 parts by mass of the polyamide resin (A).

Polyamide Composition Having Surface Reflectance and Heat Resistance

A polyamide resin composition includes (A) a polyamide resin in an amount of about 30 to about 80% by weight, (B) inorganic filler in an amount of about 10 to about 60% by weight, (C) white pigment in an amount of about 5 to about 50% by weight; and (D) photostabilizer in an amount of about 0.05 to about 2 parts by weight and (E) inorganic fine particles in an amount of about 0.05 to about 3 parts by weight, wherein each of (D) and (E) is based on about 100 parts by weight of the polyamide resin (A). The polyamide resin composition can have good light reflectance and yellowing resistance. 1. A polyamide resin composition comprising:(A) a polyamide resin in an amount of about 30 to about 80% by weight,(B) inorganic filler in an amount of about 10 to about 60% by weight,(C) white pigment in an amount of about 5 to about 50% by weight; and(D) photostabilizer in an amount of about 0.05 to about 2 parts by weight and (E) inorganic fine particles in an amount of about 0.05 to about 3 parts by weight, wherein each of (D) and (E) is based on about 100 parts by weight of the polyamide resin (A).2. The polyamide resin composition of claim 1 , wherein photostabilizer (D) and inorganic fine particles (E) are included in a ratio of about 1:2 to about 1:5.3. The polyamide resin composition of claim 1 , wherein polyamide resin (A) has an intrinsic viscosity [η] from about 0.6 to about 0.9 [dl/g].4. The polyamide resin composition of claim 1 , wherein the melting point of the polyamide resin (A) is more than about 310° C.5. The polyamide resin composition of claim 1 , wherein inorganic filler (B) includes a glass fiber with an average length of about 0.1 to about 20 mm and an aspect ratio of about 10 to about 2000.6. The polyamide resin composition of claim 1 , wherein white pigment (C) comprises titanium oxide claim 1 , zinc oxide claim 1 , zinc sulfide claim 1 , lead white claim 1 , zinc sulfate claim 1 , barium sulfate claim 1 , calcium carbonate claim 1 , aluminum oxide claim 1 ...

CUO/ZNO MIXTURES AS STABILIZERS FOR FLAME-RETARDANT POLYAMIDES

Thermoplastic molding compositions comprising 113-. (canceled)15. The thermoplastic molding composition according to claim 14 , comprisingA) from 20 to 98% by weight of the thermoplastic polyamide;B) from 0.5 to 40% by weight of the red phosphorus;C) from 0.1 to 2% by weight of the catalyst;D) from 1 to 30% by weight of the impact modifier; andE) from 0 to 50% by weight of the further additives.16. The thermoplastic molding composition according to claim 14 , in which the BET surface area of component C) is from 1 to 350 m/g.17. The thermoplastic molding composition according to claim 14 , in which the support material of component C) comprises Al oxide claim 14 , Si oxide claim 14 , TiO claim 14 , MgO claim 14 , or iron oxide claim 14 , zirconium dioxide claim 14 , aluminosilicates claim 14 , clays claim 14 , zeolites claim 14 , kieselguhr claim 14 , hydrotalcites claim 14 , or fumed silica claim 14 , or of a mixture thereof.18. The thermoplastic molding composition according to claim 14 , comprising claim 14 , as catalyst C) claim 14 , a mixture offrom 30 to 70% by weight of CuO andfrom 15 to 60% by weight of ZnOfrom 1 to 35% by weight of support material, andfrom 0 to 10% by weight of further promoters,where the percentages by weight do not exceed 100% by weight.19. The thermoplastic molding composition according to claim 18 , comprising claim 18 , as further promoters of the catalyst C) claim 18 , oxides or elements selected from alkali metals claim 18 , alkaline earth metals claim 18 , rare earths claim 18 , Sc claim 18 , Ti claim 18 , V claim 18 , Cr claim 18 , Y claim 18 , Zr claim 18 , B claim 18 , Si claim 18 , Ge claim 18 , P claim 18 , Bi claim 18 , Co claim 18 , Fe claim 18 , Ni claim 18 , W claim 18 , Mo claim 18 , Mn claim 18 , K claim 18 , Mg claim 18 , Ca claim 18 , Cu claim 18 , Zn claim 18 , Al claim 18 , or a mixture of these.20. The thermoplastic molding composition according to claim 14 , in which component C) is used in a mixture with acid ...

ISOBUTYLENE-BASED BLOCK COPOLYMER COMPOSITION

The present invention relates to a resin composition containing (A) 100 parts by weight of an isobutylene-based block copolymer having an unsaturated bond and comprising (a) a polymer block mainly comprised of isobutylene and (b) a polymer block mainly comprised of an aromatic vinyl-based compound, and (B) 0.1-50 parts by weight of a polythiol compound having two or more thiol groups in one molecule, which aims to provide an isobutylene-based block copolymer composition superior in air barrier property, flexibility, toughness and adhesiveness to rubber, and further, an inner liner as an inner liner layer of a pneumatic tire, which does not require a vulcanization step and superior in the balance between air barrier property, flexibility and toughness, and adhesiveness to carcass. 1. A resin composition containing (A) 100 parts by weight of an isobutylene-based block copolymer having an unsaturated bond and comprising (a) a polymer block mainly comprised of isobutylene and (b) a polymer block mainly comprised of an aromatic vinyl-based compound , and (B) 0.1-50 parts by weight of a polythiol compound having two or more thiol groups in one molecule.2. The resin composition according to claim 1 , wherein (A) the isobutylene-based block copolymer having an unsaturated bond is one wherein β-pinene is copolymerized.3. The resin compound according to claim 1 , wherein (A) the isobutylene-based block copolymer having an unsaturated bond has an alkenyl group at the terminal.4. The resin composition according to claim 1 , wherein (A) the isobutylene-based block copolymer having an unsaturated bond is one wherein isoprene is copolymerized.5. The resin composition according to claim 1 , wherein the block structure of (A) the isobutylene-based block copolymer having an unsaturated bond is a diblock form of (a)-(b) or a triblock form of (b)-(a)-(b).6. The resin composition according to claim 1 , wherein (A) the isobutylene-based block copolymer having an unsaturated bond has a ...

Copolyamides

The invention relates to a copolyamide comprising units resulting from the polycondensation reaction of the following precursors: terephthalic acid (a), an aliphatic diamine (b) comprising x carbon atoms, x being an integer between 6 and 22, and an aminocarboxylic acid and/or a lactam (c) comprising a main chain and at least one linear or branched alkyl branching, the total number of carbon atoms of the aminocarboxylic acid and/or of the lactam (c) being between 12 and 36. The invention also relates to the process for preparing said copolyamide and to a composition comprising such a copolyamide.

COMPOSITIONS OF POLYHYDRIC ALCOHOLS AND POLYAMIDES

The present invention relates to a thermoplastic composition that provides improved thermal aging stability along with durability. The thermoplastic composition comprises a polyamide resin, and a polyhydric alcohol, wherein a majority of the polyhydric alcohol particles have a particle size that is less than about 70 microns. It has been found that a combination of a polyamide resin and a polyhydric alcohol with this particle size produces a superior product demonstrating greater thermal stability and durability than the polyamide resin alone. 1. A thermoplastic composition comprising:a) a polyamide resin; andb) a polyhydric alcohol, wherein a majority of the polyhydric alcohol particles have a particle size of 70 microns or less.2. The thermoplastic composition of wherein the particle size of at least 80% of the polyhydric alcohol particles is 70 microns or less.3. The thermoplastic composition of wherein a majority of the polyhydric alcohol particles have a particle size of 40 microns or less.4. The thermoplastic composition of wherein the particle size of at least 80% of the polyhydric alcohol particles is 40 microns or less.5. The thermoplastic composition of further comprising a copper based heat stabilizer claim 1 , wherein the thermoplastic composition has greater than 25 ppm copper.6. The thermoplastic composition of wherein the polyhydric alcohol is present in an amount between 0.1 and 20% by weight of the thermoplastic composition.7. The thermoplastic composition of wherein the polyhydric alcohol is selected from a group consisting of monopentaerythritol (MPE) claim 1 , dipentaerythritol (DPE) claim 1 , tripentaerythritol (TPE) or combinations thereof.8. The thermoplastic composition of wherein the concentration of the amine end groups (AEG) of the polyamide resin is between about 46 meq/kg and about 54 meq/kg and wherein the thermoplastic composition has a relative viscosity of greater than 45.9. The thermoplastic composition of further comprising ...

SEMI-AROMATIC POLYAMIDE FILM, AND PROCESS FOR PRODUCTION THEREOF

A semi-aromatic polyamide film including a semi-aromatic polyamide resin including a dicarboxylic acid mainly composed of terephthalic acid and a diamine mainly composed of an aliphatic diamine having 9 carbon atoms, wherein a number density of fish-eyes of 0.01 mmor more in size present in the film is 100/1000 cmor less. 1. A semi-aromatic polyamide film comprising a semi-aromatic polyamide resin comprising a dicarboxylic acid mainly composed of terephthalic acid and a diamine mainly composed of an aliphatic diamine having 9 carbon atoms , wherein a number density of fish-eyes of 0.01 mmor more in size present in the film is 100/1000 cmor less.2. The semi-aromatic polyamide film according to claim 1 , wherein the semi-aromatic polyamide resin is a resin prepared by polymerization using a phosphorous acid catalyst.3. The semi-aromatic polyamide film according to claim 1 , further comprising a phosphorus-based heat stabilizer.5. The semi-aromatic polyamide film according to claim 4 , wherein Rto Rof the compound represented by the foregoing general formula (1) are all a 2 claim 4 ,4-di-tert-butyl-5-methylphenyl group.6. The semi-aromatic polyamide film according to claim 1 , further comprising a hindered phenol heat stabilizer.7. The semi-aromatic polyamide film according to claim 6 , wherein the hindered phenol heat stabilizer has a thermal decomposition temperature at 5% weight loss of 320° C. or higher as measured with a thermogravity analyzer.8. The semi-aromatic polyamide film according to claim 6 , wherein the hindered phenol heat stabilizer has an amide group.9. The semi-aromatic polyamide film according to claim 1 , further comprising a bifunctional type heat stabilizer.10. A process for the production of the semi-aromatic polyamide film according to claim 1 , wherein a molten polymer is obtained by melting the semi-aromatic polyamide resin claim 1 , the molten polymer is made to pass through a metal sintered filter having an absolute filtration diameter of ...

Stain-resistant articles

The present invention relates to stain- or dye-resistant articles comprising a polymer composition comprising at least one semi-aromatic polyamide comprising recurring units resulting from the condensation of terephthalic acid and at least one aliphatic diamine comprising more than 8 carbon atoms, at least one filler and from 0.1 to 35 wt. % of at least one white pigment, based on the total weight of the composition. 2. The article according to claim 1 , wherein the aliphatic diamine comprises less than 14 carbon atoms.3. The article according to claim 2 , wherein the semi-aromatic polyamide is selected from the group consisting of PA9T claim 2 , PA10T claim 2 , PA11T claim 2 , PA12T and mixtures thereof.4. The article according to claim 1 , wherein the polymer composition (C) comprises at least 40 wt. % of the semi-aromatic polyamide claim 1 , based on the total weight of the polymer composition (C).5. The article according to claim 1 , wherein the polymer composition (C) comprises at least 20 wt. % of the at least one filler claim 1 , based on the total weight of the polymer composition (C).6. The article according to claim 1 , wherein the polymer composition (C) comprises at least 1 wt. % of the at least one white pigment claim 1 , based on the total weight of the polymer composition (C).7. The article according to claim 1 , wherein the filler is glass fiber.8. The article according to claim 1 , wherein the white pigment is selected from the group consisting of titanium dioxide claim 1 , barium sulfate claim 1 , zinc sulfide and mixtures thereof.9. The article according to having a stain-resistance rating of 1 on the Stain Rating Scale of the Stain Test Method.10. The article according to being an injection molded article claim 1 , an extruded molded article claim 1 , a shaped article claim 1 , a coated article or a casted article.11. The article according to being an electronic equipment housing.12. The electronic equipment housing according to being a mobile ...

FIBER-REINFORCED THERMOPLASTIC RESIN COMPOSITION, REINFORCING FIBER BUNDLE, AND PROCESS FOR PRODUCTION OF FIBER-REINFORCED THERMOPLASTIC RESIN COMPOSITION

The present invention relates to fiber-reinforced thermoplastic resin composition comprising 0.1 to 10 mass % of a (meth)acrylic-based polymer, 1 to 70 mass % of reinforcing fiber, and 20 to 98.9 mass % of thermoplastic resin, wherein the (meth)acrylic-based polymer has, in a side chain, at least one functional group selected from a hydroxyl group, a carboxyl group, an amide group, and an urea group, and has a cohesive energy density (CED) of 385 to 550 MPa. The present invention provides, particularly in the case of using a polyolefin-based resin as matrix resin, a fiber-reinforced thermoplastic resin composition and a reinforcing fiber bundle which have high adhesiveness and good mechanical characteristics. 115.-. (canceled)17. The fiber-reinforced thermoplastic resin composition according to claim 16 , wherein the (meth)acrylic-based polymer contains one or more (meth)acrylic-based monomer units selected from 2-hydroxyethyl methacrylate unit claim 16 , N-(2-hydroxyethyl)acrylic amide unit claim 16 , and N-(2-methacryloyl oxyethyl)ethylene urea unit.18. The fiber-reinforced thermoplastic resin composition according to claim 16 , wherein the (meth)acrylic-based polymer contains 0 to 5 mass % of a (meth)acrylic-based monomer unit having a carboxyl group claim 16 , 3 to 25 mass % of a (meth)acrylic-based monomer unit having a hydroxyl group claim 16 , and 70 to 97 mass % of (meth)acrylic acid alkyl ester unit having an alkyl group with 1 to 4 carbon atoms.19. The fiber-reinforced thermoplastic resin composition according to claim 16 , wherein of all the (meth)acrylic-based monomer units in the (meth)acrylic-based polymer claim 16 , (meth)acrylic-based monomer units in which an acryloyloxy group or a methacryloyloxy group is bonded to a hydrogen and/or a primary carbon atom account for 60 mass % or more claim 16 ,20. The fiber-reinforced thermoplastic resin composition according to claim 16 , wherein the (meth)acrylic-based polymer has a hydroxyl group in a side chain ...

COMPOSITE MATERIAL FROM WASTE AND AT LEAST ONE ELEMENT OF VULCANIZED RUBBER AND TIRE CORDS

The subject matter discloses a composite material comprising a first component and a second component, the first component comprising an organic element and a thermoplastic element and the second component comprising at least one element selected from the group consisting of vulcanized rubber and tire cords. The subject matter further discloses a process comprising mixing while heating under shear forces a first component comprising organic waste and thermoplastic waste with a second component comprising at least one element selected from the group consisting of vulcanized rubber and tire cords; to obtain a melt; processing the melt, the processing comprises at least cooling the melt to obtain a composite material comprising: organic element; thermoplastic element; and at least one element selected from the group consisting of vulcanized rubber and tire cords. 1. A composite material comprising a first component and a second component , the first component comprising an organic element and a thermoplastic element and the second component comprising at least one element selected from the group consisting of vulcanized rubber and tire cords.2. The composite material of claim 1 , wherein the amount of the first component is between about 10% weight to weight (w/w) to about 50% w/w of the total weight of the composite material.3. The composite material of claim 1 , wherein the amount of thermoplastic element in the composite material is between 1% w/w to about 30% w/w of the composite material and the amount of organic element is between about 10% w/w to about 49% w/w of the composite material.4. The composite material of claim 1 , wherein the amount of the second component is between 50% w/w to about 90% w/w of the composite material.5. The composite material of claim 1 , wherein the amount of the second component is not more than about 90% w/w of the composite material claim 1 , the amount of the vulcanized rubber in the composite material is not more than about 80% w ...

USE OF MULTI-LAYERED STRUCTURE FOR THE MANUFACTURE OF GAS CONDUCTS, NAMELY FOR METHANE

The present invention relates to the use of a multi-layered structure for the manufacture of gas conducts, namely for methane, The multi-layered structure comprises, from the inside to the outside, the following successive layers: a layer containing at least one polyamide, wherein the polyamide is chosen from PA11, PA12 and an aliphatic polyamide obtained from condensation reaction of an aliphatic diamine having 6 to 18 carbon atoms and an aliphatic diacid having 9 to 18 carbon atoms; optionally, a binding 2 layer; and a layer 3 chosen from an EVOH layer, a layer formed of a mixture of polyamide and a polyolefin with a polyamide matrix, a layer of PA6,Pa6-6, MXD.6 or MXD.10 and a layer of semi-aromatic copolyamide, the layer 3 being intended to be in contact with the transported gas, 110.-. (canceled)11. A process for transporting natural gas , comprising transporting said natural gas in a multilayer gas duct structure comprising , from the outside towards the inside , the following successive layers:a layer 1 comprising at least one polyamide, that is PA-11, PA-12 or an aliphatic polyamide resulting from the condensation of an aliphatic diamine having from 6 to 18 carbon atoms and an aliphatic diacid having from 9 to 18 carbon atoms;optionally, in contact with layer 1 a tie layer 2; anda layer 3, in contact with layer 1 or, if present, layer 2, which layer 3 is an EVOH layer, a layer formed from a blend of polyamide and a polyolefin with a polyamide matrix, a PA-6, PA-6,6, MXD-6 or MXD-10 layer or a semi-aromatic copolyamide layer,the layer 3 being in contact with the transported natural gas.12. The process according to claim 11 , wherein the layer 1 further comprises at least one additive that is plasticizers claim 11 , impact modifiers claim 11 , functionalized or unfunctionalized polyolefins claim 11 , dyes claim 11 , pigments claim 11 , brighteners claim 11 , antioxidants or UV stabilizers.13. The process according to claim 11 , wherein the layer 3 is coated by ...

Film or plate

Film or plate containing a polyamide having monomer units of butane-1,4-diamine and monomer units of decanedioic acid (PA410). In a preferred embodiment the film or plate contains PA410 and at least one further polymer.

FLAME-RETARDANT POLYAMIDES WITH LIQUID-CRYSTALLINE POLYESTERS

Thermoplastic molding compositions comprising 19-. (canceled)10. A thermoplastic molding composition comprisingA) from 10 to 99.6% by weight of a thermoplastic polyamide,B) from 0.1 to 60% by weight of red phosphorus,C) from 0.5 to 30% by weight of a liquid-crystalline polyester (LCP),D) from 0 to 55% by weight of a fibrous or particulate filler or a mixture of these,E) from 0 to 40% by weight of further additives,where the sum of the percentages by weight of A) to E) does not exceed 100%.11. The thermoplastic molding composition according to comprisingA) from 20 to 94% by weightB) from 0.5 to 40% by weightC) from 0.5 to 15% by weightD) from 5 to 50% by weightE) from 0 to 40% by weight.12. The thermoplastic molding composition according to in which component E) is composed of an ethylene copolymer which comprises from 0.1 to 20% by weight of functional monomers.13. The thermoplastic molding composition according to comprising claim 10 , as component C) claim 10 , a polyester C) composed of:{'sub': '1', 'C) from 70 to 100 mol % of units which derive from bisphenol A, from aromatic carboxylic acids, from 4,4′-dihydroxybiphenyl, or from a mixture of these, and'}{'sub': '2', 'C) from 0 to 30 mol % of alkanediols having from 2 to 4 carbon atoms.'}14. The thermoplastic molding composition according to in which the aromatic carboxylic acids in C1) are composed of isophthalic acid claim 10 , terephthalic acid claim 10 , 1 claim 10 ,5- or 2 claim 10 ,6-hydroxynaphthalenecarboxylic acid claim 10 , hydroxybenzoic acid claim 10 , or a mixture of these.15. The thermoplastic molding composition according to in which component C2) is composed of ethylene glycol.16. The thermoplastic molding composition according to in which the copolyester C) is composed of{'sub': '11', 'C) from 50 to 90 mol % of 4-hydroxybenzoic acid'}{'sub': '12', 'claim-text': '1,5- or 2,6-hydroxynaphthalenecarboxylic acid or 4,4′-dihydroxybiphenyl, or a mixture of these, and', 'C) from 10 to 30 mol % of ...

NOVEL THERMOPLASTIC COMPOSITE MATERIAL

The present invention relates to the field of thermoplastics, the synthesis thereof and the use thereof. It describes in particular the integration of light ash resulting from the combustion of waste from the paper-making industry into thermoplastic matrices. It describes in particular the manufacture and use of novel thermoplastic composite materials containing a thermoplastic resin and light ash resulting from the combustion of waste from the paper-making industry. The present invention also describes a novel filler material capable of being combines with a thermoplastic resin in the manufacture of a thermoplastic composite material. 1. A thermoplastic composite material characterized in that it contains a thermoplastic base resin and light ashes displaying a regular and spherical geometry , said ashes resulting from the combustion of production wastes of the papermaking industry.2. A thermoplastic composite material according to claim 1 , characterized in that it contains a thermoplastic base resin and light ashes resulting from the combustion of de-inking sludge.3. A thermoplastic composite material according to claim 1 , characterized in that light ashes are obtained by a process including the following stages:to select a mixture of fuels containing de-inking sludge resulting from papermaking industry,to burn said mixture at a minimal temperature of 850° C. during 2 seconds,to collect the light ashes with a filter or a sieve.4. A thermoplastic composite material according to claim 1 , characterized in that it is obtained by mixing a thermoplastic base resin and light ashes resulting from the combustion of production wastes from the papermaking industry.5. A thermoplastic composite material according to claim 1 , characterized in that its mass contains 1% to 99% in mass of light ashes resulting from the combustion of production wastes of the papermaking industry claim 1 , preferentially from 10% to 50% and ideally from 30% to 40%.6. A composite thermoplastic ...

MOLDED ARTICLE HAVING EXCELLENT FUEL BARRIER PROPERTIES

The molded article includes a resin composition with a single shaft extruder, in which the resin composition is generated by melting and mixing a raw mixture, the raw mixture being obtained by blending 40-90 parts by mass of the polyolefin (A), 3-30 parts by mass of the metaxylylene group-containing polyamide (B), and 3-50 parts by mass of the modified polyolefin (C). In the single shaft extruder, the ratio of the length of the feeding part to the screw effective length is 0.40-0.55, the ratio of the length of the compressing part to the screw effective length is 0.10-0.30, the ratio of the length of the measuring part to the screw effective length is 0.10-0.40, the upper limit of the temperature of the feeding part falls within the range of +20° C. from the melting point of the metaxylylene group-containing polyamide or less, and the temperatures of the compressing part and the measuring part fall within the range of −30° C. to +20° C. from the melting point of the metaxylylene group-containing polyamide, and the shear rate is 14/second or more. 1. A molded article , comprising:a resin composition produced in a single shaft extruder,wherein:the single shaft extruder comprises:a screw comprising a screw shaft with a base end and a top end and a threading part spirally formed on a surface of the screw shaft and conveying the resin composition from the base end to the top end of the screw shaft by rotating the screw;a cylinder comprising an inner circumferential face with a cylindrical inner face shape and the screw is inserted rotatably in the cylinder;a plurality of temperature controllers adjusting a temperature of the resin composition conveyed from the base end to the top end of the screw shaft by rotating the screw; anda screw drive rotating the screw at a predetermined shear rate,wherein the screw shaft comprises:{'b': '2', 'a feeding part, wherein a screw channel depth h between a tip end of the threading part and the surface of the screw shaft from the base ...

Heat-stabilized polyamide composition

A polyamide composition is described that is stabilized with respect to heat. The composition can have a polyhydric alcohol-based stabilization system that is excellent in maintaining mechanical properties after exposure to heat. Also described, is a process for producing these compositions, and the use of these compositions for making various articles.

POLYAMIDE-POLYDIENE BLENDS WITH IMPROVED OXYGEN REACTIVITY

This application discloses the use of polyamide-polydiene blends to improve the oxygen reactivity in the presence of ionic polyester compatibilizers. 2. The composition of claim 1 , wherein the weight ratio of the polyamide to the polydiene compound is in the range of 4:1 and 1000:1.3. The composition of claim 1 , wherein the polyamide is poly(m-xylylene adipamide).4. The composition of claim 2 , wherein the polyamide is poly(m-xylylene adipamide).5. The composition of claim 1 , wherein the metal of the transition metal compound is cobalt.6. The composition of claim 4 , wherein the metal of the transition metal compound is cobalt.7. The composition of claim 1 , wherein the polydiene compound is polybutadiene.8. The composition of claim 6 , wherein the polydiene compound is polybutadiene.9. The composition of claim 1 , wherein the second polyester is a crystallizable polyester with at least 85% of its acid units derived from terephthalic acid.10. The composition of claim 8 , wherein the second polyester is a crystallizable polyester with at least 85% of its acid units derived from terephthalic acid.11. A container made from the composition of .12. A container made from the composition of .13. The container of claim 11 , wherein the container comprises a stretched wall.14. The container of claim 12 , wherein the container comprises a stretched wall. This application claims priority from U.S. Provisional Application 61/186,271 filed on 11 Jun. 2009, the teachings of which are incorporated in their entirety.The use of ionic compatibilizers to compatibilize nylons in PET barrier bottles is known in the art. The use of cobalt with nylon is known in the art, as well as the use of ionic compatibilizers, cobalt and nylon in PET barrier bottles.It is also known to use cobalt salts in the presence of polybutadiene reacted with PET to create barrier bottles.WO0183318 describes the reaction of nylon with polybutadiene to create an oxygen scavenging compound to be blended with ...

FUEL PART AND PROCESS FOR PRODUCING OF A FUEL PART

This invention relates to a fuel part, comprising a polymer composition comprising: i. a polyamide A in which the ratio of terminal carboxy group concentration over terminal amino group concentration of the polyamide A is equal to 1 or higher, and ii. micro talcum in an amount of 0.001 to 1 weight percent with respect to the total amount of the polymer composition, and iii. an impact modifier in an amount of at least 1.0 weight percent with respect to the total amount of the polymer composition. This invention also relates to a process for producing a fuel part. 1. Fuel part , comprising a polymer composition comprising:i. a polyamide A in which the ratio of terminal carboxy group concentration over terminal amino group concentration of the polyamide A is equal to 1 or higher, andii. micro talcum in an amount of 0.001 to 1 weight percent with respect to the total amount of the polymer composition, andiii. an impact modifier in an amount of at least 1.0 weight percent with respect to the total amount of the polymer composition.2. Fuel part according to claim 1 , characterized in that the amount of micro talcum is between 0.01 to 0.5 weight percent with respect to the total amount of the polymer composition.3. Fuel part according to claim 1 , characterized in that the amount of micro talcum is between 0.01 to 0.2 weight percent with respect to the total amount of the polymer composition.4. Fuel part according to claim 1 , characterized in that the ratio of terminal carboxy group concentration over terminal amino group concentration of the polyamide A is at least 1.1.5. Fuel part according to claim 1 , characterized in that the ratio of terminal carboxy group concentration over terminal amino group concentration of the polyamide A is at least 1.2.6. Fuel part according to claim 1 , characterized in that the impact modifier is chosen from the group of maleic anhydride functionalized polyolefin.7. Fuel part according to claim 1 , characterized in that the polyamide A is ...

Composition including a mixture of a thermoplastic condensation polymer and a supramolecular polymer, and manufacturing method

A subject matter of the present invention is a composition comprising: (i) from 0.1 to 49 parts by weight of at least one thermoplastic condensation polymer; and (ii) from 51 to 99.9 parts by weight of at least one supramolecular polymer capable of being obtained by the reaction of at least one at least trifunctional compound (A) carrying first and second functional groups with: at least one compound (B) carrying, on the one hand, at least one reactive group capable of reacting with the first functional groups of (A) and, on the other hand, at least one associative group; and at least one at least bifunctional compound (C), the functional groups of which are capable of reacting with the second functional groups of the compound (A) in order to form ester, thioester or amide bridges.

HEAT STABILIZED POLYAMIDE COMPOSITION

Heat stabilized polyamide composition, characterized in that the composition contains polyamide 410 (PA-410) and a copper compound and reinforcement fibers. PA-410 is a polyamide containing monomer units derived from a dicarboxylic acid with a chain of 10 carbon atoms between the carboxylic acid groups and a diamine with 4 carbon atoms. Preferably as the dicarboxylic acid 1,10 decandioic acid is used. As the diamine preferably 1,4-butanediane is used. 1. Heat stabilized polyamide composition , characterized in that the composition contains polyamide 410 and a copper compound and reinforcement fibers.2. Heat stabilized polyamide composition according to claim 1 , wherein the composition contains a copper compound and a salt containing a halogenide acid group.3. Heat stabilized polyamide composition according to claim 2 , wherein copper iodide as copper compound and potassium iodide as the salt containing a halogenide acid group are used.4. Heat stabilized polyamide composition according to claim 1 , wherein the amount of copper present in the composition is between 10-500 ppm.5. Heat stabilized polyamide composition according to claim 1 , wherein the amount of copper present in the composition is between 10-100.6. Heat stabilized polyamide composition according to claim 1 , wherein the composition contains between 2-70 wt. % of reinforcement fibers.7. Heat stabilized polyamide composition according to claim 1 , wherein the reinforcement fibers are glass fibers.8. Heat stabilized polyamide composition according to claim 1 , wherein the reinforcement fibers are glass fibers in an amount between 15 and 60 wt %.9. Heat stabilized polyamide composition according to claim 1 , wherein a further polymer B is present and whereby the amount of polyamide 410 and B add up to 100 parts by weight. The invention relates to a heat stabilized polyamide composition.Polymers degrade by oxidation when heated. Because of this so-called thermal degradation the mechanical properties of the ...

Cleaning Method

The invention provides a method for the cleaning of a soiled substrate, the method comprising treating the substrate with a solid particulate cleaning material and wash water, the treatment being carried out in an apparatus comprising a drum comprising perforated side walls and having a capacity of between 5 and 50 litres for each kg of fabric in the washload, wherein said solid particulate cleaning material comprises a multiplicity of polymeric particles at a particle to fabric addition level of 0.1:1-10:1 by mass, each particle being substantially cylindrical or spherical in shape and having an average density in the range of 0.5-2.5 g/cm 3 and an average volume in the range of 5-275 mm 3 , and wherein said drum comprising perforated side walls is rotated at a speed which generates G forces in the range of from 0.05 to 900 G. The polymeric particles may comprise foamed or unfoamed polymeric materials which may comprise either linear or crosslinked polymers. Preferably, at least one detergent is employed in the cleaning process. The invention provides optimum cleaning performance as a result of improved mechanical interaction between substrate and cleaning media and is preferably used for the cleaning of textile fabrics. The method allows for significant reductions in the consumption of detergents, water and energy when compared with the conventional wet cleaning of textile fabrics, and also facilitates reduced washing-related textile fabric damage. The invention also envisages a cleaning composition comprising a solid particulate cleaning composition and at least one additional cleaning agent. In particular embodiments of the invention, the solid particulate cleaning material is separated and recovered and then re-used in subsequent cleaning processes. Typically, the solid particulate cleaning material is itself cleaned intermittently in order to maintain its efficacy.

THERMOPLASTIC POLYAMIDE COMPOSITION

Disclosed is a thermoplastic polyamide composition including a) a polyamide resin; b) one or more polyhydric alcohols; c) one or more anti-whitening agents selected from the group consisting of poly(ethylene glycol), poly(ethylene glycol) diesters, poly(propylene glycol), poly(propylene glycol) diesters; and styrene-isoprene-styrene block copolymers; and mixtures of these; d) a lubricant; e) one or more reinforcement agents; and, optionally, f) a polymeric toughener comprising a reactive functional group and/or a metal salt of a carboxylic acid. 2. The thermoplastic polyamide composition of wherein the lubricant is selected from the group consisting of fatty acids claim 1 , fatty acid esters claim 1 , fatty acid amides claim 1 , fatty acid metal salts claim 1 , and oxidized polyethylene wax.3. The thermoplastic polyamide composition of wherein the lubricant is present at 0.05 to 0.5 weight percent based on the weight of the total thermoplastic polyamide composition.4. The thermoplastic polyamide composition of wherein the anti-whitening agent is selected from polyethylene glycol and poly(ethylene glycol) diesters.5. The thermoplastic polyamide composition of wherein the reinforcing agent is selected from the group consisting of glass fiber and noncircular glass fiber.6. The thermoplastic polyamide of wherein the composition further comprises: 0.1 to 3.0 weight percent of one or more colorants.7. The thermoplastic polyamide of wherein the composition further comprises: 1 to 30 weight percent of one or more halogenated flame retardants.9. The thermoplastic polyamide composition of wherein the polyamide resin is selected from the group consisting of poly(ε-caprolactam) claim 8 , poly(hexamethylene hexanediamide) claim 8 , poly(hexamethylene hexanediamide/hexamethylene terephthalamide) claim 8 , and poly(hexamethylene terephthalamide/hexamethylene hexanediamide).10. The polyamide composition of wherein 5 in ×3 in ×2 mm test plaques prepared from said polyamide ...

SYNTHESIS AND USE OF ARAMID NANOFIBERS

Dissociation of a macroscale version of an aramid fiber leads to the nanofiber form of this polymer. Indefinitely stable dispersions of uniform high-aspect-ratio aramid nanofibers (ANFs) with diameters between 3 and 30 nm controlled by the media composition and up to 10 μm in length are obtained. ANFs can be processed in transparent thin films using layer-by-layer assembly (LBL) with superior mechanical performance. 1. Aramid nanofibers of diameter 3 to 100 nm.2. A suspension comprising aramid nanofibers of and an aprotic solvent claim 1 , wherein the nanofibers have a diameter of 3 to 100 nm and the length of 0.1 to 10 micrometers.3. Aramid nanofibers of claim 1 , wherein the aramid is (poly (para-phenylene terephthalamide)) (PPTA).4. Aramid nanofibers of claim 1 , having diameter from 3 to 30 nm.5. Aramid nanofibers of claim 1 , having a length of 1 to 10 micrometers.6. A suspension according to claim 2 , wherein the solvent comprises DMSO.7. A suspension comprising aramid nanofibers of and a mixture of water and an aprotic solvent claim 1 , wherein the volume ratio of water/aprotic solvent is from 1/1 claim 1 ,000 to 1/20.8. A suspension according to claim 7 , wherein the ratio of water/aprotic solvent is from 1/200 to 1/40.9. An aramid nanofiber film comprising a plurality of nanofibers according to .10. A film according to claim 9 , comprising a layer-by-layer assembled composite comprising a plurality of deposited layers of nanofibers.11. A film according to claim 9 , wherein the nanofiber comprises PPTA.12. A film according to claim 10 , comprising 10 to 2 claim 10 ,000 deposited layers.13. A film according to claim 10 , comprising 10 to 1 claim 10 ,000 deposited layers.14. A film according to claim 10 , comprising 100 to 500 deposited layers.15. A method for making a suspension of aramid nanofibers in a solvent comprising DMSO claim 10 , the method comprising:a. Exposing an aramid material to ultrasound energy while in contact with a solvent, wherein the ...

THERMOPLASTIC MOULDING COMPOUNDS WITH INCREASED MELT STABILITY

This invention relates to substance mixtures for thermoplastic molding compositions, comprising A) polyamide and/or copolyamide, B) copolymers of at least one olefin and of at least one acrylate of an aliphatic alcohol, C) additives with chain-extending effect and D) impact modifiers and optionally also E) other additives and/or F) fillers and reinforcing materials. The invention further relates to processes for producing molding compositions of the invention and molded products or semifinished products which are produced from the substance mixtures of the invention, preferably by means of extrusion or blow molding of the molding compositions to be produced from the substance mixtures. 1. A substance mixture comprisingA) from 70 to 98.99 parts by weight of polyamide,B) from 1 to 10% by weight of a copolymer composed of at least one olefin, preferably α-olefin, and at least one methacrylate or acrylate of an aliphatic alcohol, where the MFI (Melt Flow Index) of the copolymer B) is greater than 10 g/10 min, and the MFI is determined or measured at 190° C. with a load of 2.16 kg,C) from 0.01 to 10 parts by weight of an additive having chain-extending effect from the group of epoxidized fatty acid esters of glycerol or of modified bisphenol A epoxy resins, andD) from 0.001 to 40 parts by weight of an impact modifier.2. The substance mixture as claimed in claim 1 , characterized in that the copolymer B) is composed of less than 4 parts by weight of monomer units which comprise other reactive functional groups selected from the group consisting of epoxides claim 1 , oxetanes claim 1 , anhydrides claim 1 , imides claim 1 , aziridines claim 1 , furans claim 1 , acids claim 1 , amines claim 1 , and oxazolines.3. The substance mixture as claimed in or claim 1 , characterized in that in the copolymer B) the olefin is copolymerized with 2-ethylhexyl acrylate.4. The substance mixture as claimed in claim 3 , characterized in that in the copolymer B) the olefin is ethene.5. The ...

TOUGHENED POLYAMIDE COMPOSITIONS

Disclosed is a thermoplastic resin composition including 2. The thermoplastic resin composition of wherein said polyamide consists essentially of 10 to 35 weight percent repeat units of the formula (I) and 65 to 90 weight percent repeat unit of the formula (II).3. The thermoplastic resin composition of wherein said polymeric toughener b1 is selected from the group consisting of:(b11) an ethylene/α-olefin or ethylene/α-olefin/diene (EPDM) copolymer grafted with an unsaturated carboxylic anhydride; (b12) a copolymer of ethylene, 2-isocyanatoethyl (meth)acrylate, and optionally one or more (meth)acrylate esters; (b13) a copolymer of ethylene and acrylic acid reacted with a Zn, Li, Mg or Mn compound to form a corresponding ionomer; and (b14) a block polymer consisting of styrene-ethylene/butylene-styrene triblock polymer functionalized with maleic anhydride.4. The thermoplastic resin composition of wherein said nonfunctional polymeric toughener of b2 are selected from the group consisting of: (b21) an ethylene/α-olefin or ethylene/α-olefin/diene (EPDM) copolymer; and (b22) a block polymer consisting of styrene-ethylene/butylene-styrene triblock polymer.5. The thermoplastic resin composition of wherein said additives comprise 1 to 6 weight percent polyhydric alcohol.6. The thermoplastic resin composition of wherein said additives comprise 0.1 to at or about 1 weight percent of copper salts. This application claims priority of U.S. Provisional Application 61/639,122, filed Apr. 27, 2012.Polyamides containing repeat units derived from 1,6-diaminohexane and terephthalic acid, and 1,6-diaminohexane and adipic acid, in specified proportions, may be toughened with exceptionally small amounts of rubber tougheners, to give compositions which are especially tough.So-called “engineering polymers”, including polyamides, are important items of commerce, being used extensively for many different types of parts in for instance automotive, electrical and industrial uses. In some cases ...

Lubricious medical tubing

A composition of a polyamide and PTFE produces a lubricious surface on extruded medical tubing. The small size of the PTFE powder when compounded with polyamide disperses uniformly and produces an intrinsically lubricious polymer. Such a composition can be useful in medical, intralumenal tubing.

Flame-retardant polyamide compositions filled with ground glass

The present invention relates to flame-retardant compositions based on a thermoplastic polyamide comprising non-fibrous and unfoamed ground glass with specific particle size distribution, geometry and size, and also to the production and the use of the compositions of the invention for producing products, preferably fibres, foils and mouldings of any type.

SHEET FOR SHOE SOLE AND SHOE SOLE INCLUDING THE SAME

A sheet for forming a shoe sole, useful for efficiently joining a crosslinked rubber layer as a stud and a thermoplastic elastomer layer as a sole, is provided. 1. A sheet for forming a molded composite article as a shoe sole ,wherein the molded composite article comprises a crosslinked rubber layer as a stud, a thermoplastic elastomer layer as a sole, and the sheet interposed between the crosslinked rubber layer the thermoplastic elastomer layer, being in directly contact with these layers, andthe sheet comprises a resin component (A) containing a polyamide resin (a), wherein the resin component (A) has an amino group concentration of not less than 10 mmol/kg and a flexural modulus of not less than 300 MPa in accordance with ISO178.2. A sheet according to claim 1 , wherein the polyamide resin (a) comprises at least one member selected from the group consisting of a polyamide and a polyamide elastomer.3. A sheet according to claim 1 , wherein the polyamide resin (a) comprises a polyamide resin having a melting point of not lower than 165° C. at a proportion of not less than 30% by weight in the total polyamide resin (a).4. A sheet according to claim 1 , wherein the resin component (A) is any one of the following (1) to (3):(1) a polyamide resin alone, having an amino group concentration of not less than 10 mmol/kg, a melting point of not lower than 165° C., a flexural modulus of not less than 300 MPa in accordance with ISO178,(2) a polyamide resin composition comprising a plurality of polyamides, which comprises a polyamide having a melting point of not lower than 165° C. at a proportion of not less than 30% by weight and satisfies, as a whole, an amino group concentration of not less than 10 mmol/kg and a flexural modulus of not less than 300 MPa in accordance with ISO178,(3) a resin composition comprising a polyamide and a polyamide elastomer, wherein not less than 30% by weight of the polyamide and/or the polyamide elastomer has a melting point of not lower than ...

STRETCHED POLYAMIDE FILM

The objective of the present invention is to provide a stretched polyamide film which is excellent in laminatability, lamination strength, mechanical properties and shock resistance property and which has effects to prevent goods being broken and protect a content from vibration and shock at the time of transportation when used as various packaging materials. The present invention relates to a stretched polyamide film, wherein a main constituent is nylon 6; at least one surface layer meets the following conditions (1) and (2); and the stretched polyamide film meets the following condition (3): (1) a relaxation degree of a surface layer orientation measured by IR spectroscopy is within a range of not less than 0.3 and not more than 0.5; (2) a crystallization degree of a surface layer measured by IR spectroscopy is within a range of not less than 1.0 and not more than 1.4; (3) a heat shrinkage rate (%) in TD direction at 160° C. for 10 minutes is within a range of not less than 0.6 and not more than 4. 1. A stretched polyamide film , whereina main constituent is nylon 6;at least one surface layer meets the following conditions (1) and (2); andthe stretched polyamide film meets the following condition (3):(1) a relaxation degree of a surface layer orientation measured by IR spectroscopy is within a range of not less than 0.3 and not more than 0.5;(2) a crystallization degree of a surface layer measured by IR spectroscopy is within a range of not less than 1.0 and not more than 1.4;(3) a heat shrinkage rate (%) in TD direction at 160° C. for 10 minutes is within a range of not less than 0.6 and not more than 4.2. The stretched polyamide film according to claim 1 , whereinthe surface layer contains nylon 6 and a resin other than nylon 6;the surface layer meets the conditions (1) and (2); andthe stretched polyamide film meets the condition (3).3. The stretched polyamide film according to claim 1 ,comprising at least two layers composed of nylon 6;whereinrelative ...