Abstract:
The present invention relates to moulding compounds comprising (A) from 29 to 89% by weight of at least one polyarylene ether sulphone, having a mean number of phenolic end groups per chain from 0 to 0.2, (B) from 0.5 to 20% by weight of a thermotropic polymer, (C) from 0.5 to 10% by weight of a polyarylene ether having predominantly OH end groups, (D) from 10 to 70% by weight of at least one fibrous or particulate filler, (E) from 0 to 40% by weight of additive or processing auxiliaries, wherein the sum of the weight fractions gives 100% by weight, based on the thermoplastic moulding compound.
Abstract:
The thermoplastic moulding composition contains, based on the thermoplastic moulding composition, a) at least one thermoplastic matrix polymer which is selected from among polyamides, polyesters, polyacetals and polysulphones and can also be present as polymer blends as component A, b) from 0.1 to 5% by weight of at least one highly branched or hyperbranched polymer having functional groups which can react with the matrix polymer of the component A as component B, c) from 0.1 to 15% by weight of conductive carbon fillers selected from among carbon nanotubes, graphenes, carbon black, graphite and mixtures thereof as component C, with specific thermoplastic moulding compositions being excluded.
Abstract:
Method for producing fiber-reinforced composite materials, by saturating a plurality of continuous filaments or woven fabrics, optionally together with reinforcement materials, containing caprolactam and other starting materials for polyamide 6, or other starting materials for copolymers of the caprolactam, passing the materials through at temperatures between 70 and 100ºC, anionically polymerizing them at temperatures between 100 and 190ºC, and optionally re-polymerizing them at temperatures between 90 and 170ºC.
Abstract:
The manufacture of flat molded members or films that have anisotropic thermal expansion coefficients is done from extrudable thermoplastic polymer molding materials by filling the thermoplastic polymer molding materials with lamellar layered silicates that have a diameter in the range of 10 to 1000 nm and an aspect ratio from 1 to 5 to 1 to 10000, extruding the filled thermoplastic polymer molding materials and subsequently uniaxially or biaxially stretching the extrudate into flat molded members or films.
Abstract:
The present invention relates to compositions comprising the following components: (A) at least one polyarylene ether, (B) at least one polyarylene sulfide and (C) at least one anhydride of a polyfunctional carboxylic acid having a number-average molecular weight of at most 600 g/mol. The present invention further relates to the use of the anhydrides of polyfunctional carboxylic acids mentioned in compositions comprising at least one polyarylene ether and at least one polyarylene sulfide.
Abstract:
The manufacture of flat molded members or films that have anisotropic thermal expansion coefficients is done from extrudable thermoplastic polymer molding materials by filling the thermoplastic polymer molding materials with lamellar layered silicates that have a diameter in the range of 10 to 1000 nm and an aspect ratio from 1 to 5 to 1 to 10000, extruding the filled thermoplastic polymer molding materials and subsequently uniaxially or biaxially stretching the extrudate into flat molded members or films.
Abstract:
The invention relates to polymer mixtures that contain the components (a) 40 to 95% by weight of at least one polyaryl ether copolymer which is constituted of (a1) 50 to 99.9% by weight of elements of formula (I) and 0 to 40% by weight of additional elements Il selected from segments of one or more thermoplastic polymers, and (a2) 0.1 to 10% by weight of at least one crosslinker V having at least three hydroxy functionalities, the at least one crosslinker V in component (a) being present in reacted form and the sum of weight percents of (a1) and (a2) being 100% by weight, and (b) 5 to 60% by weight of at least one hydrophilic polymer selected from polyvinyl pyrrolidone, polyvinyl pyrrolidone copolymers, polyethylene glycol, polypropylene glycol, copolymers of ethylene glycol and propylene glycol, water-soluble cellulose derivatives, polyamide, polyvinyl acetate and polyvinyl alcohol, the sum of weight percents of components (a) and (b) being 100% by weight. The invention also relates to separate combinations of the above components (a) and (b) for their joint use. The invention further relates to polymer membranes that contain the above polymer mixtures and to a method for producing the same and to the use of the polymer membranes for producing dialysis filters. The invention also relates to dialysis filters that contain the above hollow fiber membranes.
Abstract:
The invention relates to polyester mixtures comprising A) from 30 to 98% by weight of at least one thermoplastic aromatic polyester, B) from 0.01 to 15% by weight of B1) at least one highly branched or hyperbranched polycarbonate or B2) at least one highly branched or hyperbranched polyester or mixtures thereof, C) from 1 to 20% by weight of a polyester based on aliphatic and aromatic dicarboxylic acids and an aliphatic dihydroxyl compound, D) from 0 to 60% by weight of further additives, where the sum of the percentages by weight of components A) to D) adds up to 100%; to the use thereof, and to fibers, films and moldings obtainable from these polyester mixtures.
Abstract:
Thermoplastic molding materials, comprising A) 10 to 97.5 % by weight of at least one thermoplastic polyester A; B) 1 to 97.5 % by weight of at least one graft polymer B from b1) 40 to 80 % by weight of a graft base from a rubber-elastic polymer B1 on the basis of alkylacrylates with 1 to 8 C atoms in the alkyl group, ethylene/propylene, dienes or siloxanes and having a glass transition temperature of below 0 °C, b2) 20 to 60 % by weight of a graft base B2 from b21) 60 to 95 % by weight of styrene or substituted styrenes B21 of general formula (I), wherein R represents a C1-8 alkyl group or hydrogen and R1 represents a C1-8 alkyl group and n is 1, 2 or 3, or the mixtures thereof and b22) 5 to 40 % by weight of at least one unsaturated nitrile B22; C) 1 to 97.5 % by weight of at least one thermoplastic copolymer C, from c1) 60 to 85 % by weight of styrene or substituted styrenes C1 of general formula (I) or the mixtures thereof and c2) 15 to 40 % by weight of at least one unsaturated nitrile C2; D) 0.5 to 50 % by weight of at least one copolymer D, which is obtainable by reacting d1) 5 to 95 % by weight of at least one thermoplastic methacrylate polymer D1 comprising at least one kind of functional groups, selected from the group including epoxy, carboxyl, hydroxyl, anhydride and oxazoline, with d2) 5 to 95 % by weight of at least one thermoplastic polyester D2; E) 0 to 40 % by weight of at least one filler E; F) 0 to 2 % by weight of at least one organic acid F; G) 0 to 25 % by weight of at least one halogen-free phosphorus compound G; H) 0 to 45 % by weight of other additives H; the sum of components A to H always adding up to 100 %.