Abstract: Multiphase polymer blends containa) a polymer (A),b) an A--B block copolymer (B) composed of a block A and a resilient block B andc) a B--C block copolymer (C) composed of a resilient block B and a block Cd) and at least one further polymer (D) which differs from (A),(B) and (C) and is incompatible with the polymer (A),wherein the blocks A, B and C are different from one another, the polymer (A) is compatible with the block A and incompatible with the block C, the polymer (D) is compatible with the block C and incompatible with the block A, the resilient block B has a glass transition temperature below +20.degree. C. and the blocks A, B and C are incompatible with one another.

Abstract: Thermoplastic molding materials containA) from 5 to 94% by weight of a partly aromatic, semicrystalline copolyamide composed essentially ofa.sub.1) from 30 to 44 mol % of units which are derived from terephthalic acid,a.sub.2) from 6 to 20 mol % of units which are derived from isophthalic acid,a.sub.3) from 43 to 49.5 mol % of units which are derived from hexamethylenediamine, anda.sub.4) from 0.5 to 7 mol % of units which are derived from aliphatic cyclic diamines of 6 to 30 carbon atoms,the molar percentages of components a.sub.1) to a.sub.4) together giving 100% andB) from 5 to 94% by weight of an ASA or ABS or SAN polymer or of a C.sub.1 -C.sub.18 -alkyl ester of (meth)acrylic acid or of a mixture thereof,C) from 1 to 30% by weight of an adhesion promoter which contains from 0.

Abstract: Thermoplastic molding materials containA) from 1 to 98.5% by weight of a partly aromatic copolyamide,B) from 1 to 98.5% by weight of a polymethacrylimide,C) from 0.5 to 30% by weight of a polymeric component having OH groups,D) from 0 to 60% by weight of fibrous or particulate fillers or mixtures thereof,E) from 0 to 40% by weight of rubber impact modifiers andF) from 0 to 40% by weight of conventional additives and processing assistants.

Abstract: Thermoplastic molding materials containA) from 5 to 95% by weight of a semicrystalline, partly aromatic copolyamide composed ofa.sub.1) from 30 to 44 mol % of units which are derived from terephthalic acid,a.sub.2) from 6 to 20 mol % of units which are derived from isophthalic acid,a.sub.3) from 43 to 49.5 mol % of units which are derived from hexamethylenediamine anda.sub.4) from 0.5 to 7 mol % of units which are derived from aliphatic cyclic diamines of 6 to 30 carbon atoms,the molar percentages of the components a.sub.1) to a.sub.4) summing to 100%,B) from 5 to 95% by weight of a copolymer of vinylaromatic compounds with .alpha.,.beta.-unsaturated dicarboxylic anhydrides and .alpha.,.beta.-unsaturated dicarboximides,C) from 0 to 90% by weight of an SAN, ABS or ASA polymer or of a polymer of a C.sub.1 -C.sub.

Abstract: The invention is directed to molding materials containingA) from 1 to 99% by weight of polyarylene ethers having repeating units I ##STR1## where t and q may each be an integer 0, 1, 2 or 3,T, Q and Z may each be a chemical bond or --O--, --S--, --SO.sub.2 --, S.dbd.O, C.dbd.O, --N.dbd.N--, R.sup.a C.dbd.CR.sup.b -- or --CR.sup.c R.sup.d --, with the proviso that at least one of the groups T, Q and Z is --SO.sub.2 -- or C.dbd.O,R.sup.a and R.sup.b,R.sup.c and R.sup.d, andAr and Ar.sup.1 are as defined in the specification,B) from 1 to 99% by weight of copolyamides containingb.sub.1) from 30 to 44 mol % of units which are derived from terephthalic acid,b.sub.2) from 6 to 20 mol % of units which are derived from isophthalic acid,b.sub.3) from 43 to 49.5 mol % of units which are derived from hexamethylenediamine,b.sub.4) from 0.5 to 7 mol % of units which are derived from aliphatic cyclic diamines of 6 to 30 carbon atoms andb.sub.5) from 0 to 4 mol % of further polyamide-forming monomers which differ from b.sub.

Abstract: Thermoplastic molding materials containA) from 5 to 95% by weight of a partly aromatic, semicrystalline copolyamide composed essentially ofa.sub.1) from 30 to 44 mol % of units which are derived from terephthalic acida.sub.2) from 6 to 20 mol % of units which are derived from isophthalic acida.sub.3) from 43 to 49.5 mol % of units which are derived from hexamethylenediamine anda.sub.4) from 0.5 to 7 mol % of units which are derived from aliphatic cyclic diamines of 6 to 30 carbon atoms,the molar percentages of components a.sub.1) to a.sub.4) together being 100%, andB) from 5 to 95% by weight of a polyphenylene etherC) from 0 to 30% by weight of an elastomeric polymer,D) from 0 to 45% by weight of a fibrous or particulate filler or of a mixture thereof,E) from 0 to 20% by weight of a flameproofing agent andF) from 0 to 30% by weight of conventional additives and processing assistants,the percentages A) to F) summing to 100%.

Abstract: High molecular weight thermoplastic molding materials are obtainable by mixingA) 20-80% by weight of a polyphenylene ether andB) 0-70% by weight of conventional additives and processing assistantsinto a melt ofc) 10-80% by weight of a low molecular weight polyamide having a viscosity number of from 40 to 185 ml/gand subsequently carrying out solid-phase postcondensation.

Abstract: In order to prepare thermoplastic molding materials ofA) 5-95% by weight of a modified polyphenylene ether,B) 5 to 95% by weight of a thermoplastic polyamide,C) 0 to 25% by weight of an impact-modifying rubber, andD) 0 to 50% by weight of auxiliaries and/or additives,the components A and B and if necessary the components C and D are fed individually at one or more points into an extruder, mixed with one another, and melted. The component A present in a pulverulent consistency is compacted and/or sintered under pressure and if necessary with the addition of heat, preferably at a pressure corresponding to a nip pressure of 1 to 100 kn/cm to form a porous compact before it is fed into the extruder. The compact is then modified and added as granules to the feed zone of the extruder. In this way the proportion of the fines in the polyphenylene ether is considerably reduced, so that there is virtually no further danger of dust explosions.

Abstract: In order to prepare thermoplastic molding materials from pulverulent polyphenylene ethers and aromatic vinyl polymers by melt extrusion, the pulverulent polyphenylene ether is first of all compacted and/or sintered under pressure and if necessary with the addition of heat, preferably under a pressure corresponding to a nip pressure of from 1 to 100 kN/cm, to form a porous compact. The compact is then fed in the form of agglomerates having a particle size of from about 0.5 mm to about 20 mm into an extruder or the like, mixed with the aromatic vinyl polymer and if desired further components, and melted. In this way the proportion of the fines in the polyphenylene ether is considerably reduced, with the result that there is virtually no further danger of dust explosions. Further advantages include improved ease of metering and reduced electrostatic charge of the agglomerates. The extruded molding materials have good mechanical properties and also high thermal stability.