摘要:
Reinforced thermoplastic molding materials containing, as essential components,(A) from 40 to 94 parts by weight of a polymer component of(a.sub.1) from 10 to 90% by weight of polyphenylene ether and(a.sub.2) from 10 to 90% by weight, based in each case on A, of a styrene polymer toughened with an acrylate rubber or with an unhydrogenated or hydrogenated polymer of a conjugated diene,(B) from 1 to 20 parts by weight of a copolymer of(b.sub.1) from 70 to 99.9% by weight of a monomer from the group consisting of styrene, .alpha.-methylstyrene and styrene alkylated in the nucleus or a mixture of these monomers,(b.sub.2) from 0.1 to 30% by weight of one or more compounds from the group consisting of tert-butyl acrylate and tert-butyl methacrylate, or one or more compounds from the group of compounds of the general formula I ##STR1## where R.sup.1 is hydrogen or methyl and R.sup.2, R.sup.3 and R.sup.4 are each an alkyl or alkoxy group of not more than 4 carbon atoms, or of the general formula II ##STR2## where n is an integer from 1 to 4 and R.sup.5, R.sup.6 and R.sup.7 are each one of the radicals stated for R.sup.2 or are each --O(CH.sub.2 --CH.sub.2 --O).sub.m R.sup.8, where R.sup.8 is C.sub.1 -C.sub.4 -alkyl and m is 1, 2, 3 or 4, and(b.sub.3) from 0 to 10% by weight, based on the copolymer, of a further ethylenically unsaturated monomer which is copolymerizable with b.sub.1 and b.sub.2, and(C) from 5 to 50 parts by weight of a reinforcing agent, the number of parts by weight being based on 100 parts by weight of the sum of A, B and C,are prepared and used for the production of moldings.
摘要:
Thermoplastic molding materials contain, as essential components,A) from 5 to 94% by weight of a polyamide,B) from 5 to 94% by weight of a polyphenylene ether,C) from 1 to 20% by weight of a partially hydrogenated PQP' block copolymer, where.alpha.) the blocks P and P' consist of vinylaromatic monomers and the total amount of these blocks in the block copolymer is from 25 to 40% by weight,.beta.) the number average molecular weight of block P is not more than 8,000 and is smaller than the number average molecular weight of block P',.gamma.) block Q consists of conjugated diene monomers and accounts in total for from 60 to 75% by weight of the block copolymer and.delta.) from 5 to 30% by weight of the double bonds in block Q are not hydrogenated, andD) from 0 to 50% by weight of a vinylaromatic polymer.
摘要:
A process for the preparation of finely divided polyolefin molding materials from 100 parts by weight of a polyolefin and from 0.01 to 30 parts by weight of an electrically conductive additive, with or without other additives, wherein the mixture of the finely divided polyolefin particles and the electrically conductive additives is brought to the crystallite melting point of the polyolefin by the heating effect of the mixing action, and is then brought to a temperature which is from 3.degree. to 40.degree. C. above the said crystallite melting point while being subjected to a defined mixing intensity, after which the mixture is either cooled within 120 seconds or is directly compression-molded.
摘要:
Thermoplastic molding materials containA) not less than 5% by weight of a polymer component consisting of from 50 to 100% by weight of polyphenylene ethers and from 0 to 50% by weight of a styrene polymer differing from component C),B) not less than 5% by weight of a polyester,C) not less than 0.1% by weight of a copolymer consisting ofC.sub.1) not less than 20% by weight of .alpha.-olefins of 2 to 8 carbon atoms, styrene or substituted styrenes of the general formula I ##STR1## where R and R.sup.1 is alkyl of 1 to 8 carbon atoms, hydrogen and/or halogen and n is 0, 1 or 2, or a mixture of these monomers,C.sub.2) not less than 0.5% by weight of a polymerizable monomer containing epoxide groups, and/orC.sub.3) not less than 0.05% by weight of a halobenzyl-containing polymerizable monomer having the structural unit (II) ##STR2## where X is halogen and R.sup.2 and R.sup.3 are each alkyl of 1 to 8 carbon atoms or hydrogen and n is 1, 2 or 3, and/orC.sub.4) not less than 0.05% by weight of a polymerizable monomer containing oxazoline groups, andC.sub.5) from 0 to 65% by weight of acrylonitrile, methacrylonitrile and further nonionic comonomers, andD) from 0 to 40% by weight of a rubber impact modifier.
摘要:
Thermoplastic molding materials containing(A) not less than 5% by weight of a polyphenylene ether and(B) not less than 5% by weight of a nylon furthermore contain(C) not less than 0.1% by weight of a copolymer composed of(C.sub.1) not less than 30% by weight of a styrene of the general formula I ##STR1## where R and R.sup.1 are alkyl of 1 to 8 carbon atoms, hydrogen and/or halogen and n is 0, 1, 2 or 3,(C.sub.2) not less than 0.5% by weight of an epoxide-containing polymerizable monomer and/or(C.sub.3) not less than 0.05% by weight of a halobenzyl-containing polymerizable monomer possessing a structural unit (II) ##STR2## where X is halogen, R.sup.2 and R.sup.3 are each alkyl of 1 to 8 carbon atoms or hydrogen and n is 1, 2 or 3, and/or(C.sub.4) not less than 0.05% by weight of a polymerizable monomer containing oxazoline groups and(C.sub.5) from 0 to 20% by weight of acrylonitrile, methacrylonitrile and/or other nonionic comonomers, and(D) from 0 to 35% by weight of a toughened rubber, and possess particularly good impact strength.
摘要:
Thermoplastic molding materials contain, as essential components,A) 5-92% by weight of a polyphenylene ether which can contain up to 50% by weight of a styrene polymer which differs from C),B) 5-92% by weight of a nylon,C) 3-50% by weight of a copolymer composed of C.sub.1) 97-99.9% by weight of styrene and/or substituted styrenes of the general formula I ##STR1## where R is hydrogen, alkyl of 1 to 8 carbon atoms or halogen, R.sup.1 is alkyl of 1 to 8 carbon atoms or halogen and n is 0, 1, 2 or 3,C.sub.2) 0.1-3% by weight of an .alpha.,.beta.-unsaturated dicarbonyl compound andC.sub.3) 0-10% by weight of further, nonionic comonomers, andD) 0-35% by weight of a rubber impact modifier.
摘要:
Thermoplastic molding materials contain(A) not less than 5% by weight of a polymer component consisting of from 50 to 10 % by weight by polyphenylene ethers and from 0 to 50% by weight of a styrene polymer differing from component (C),(B) not less than 5% by weight of a polyester,(C) not less than 0.1% by weight of a copolymer consisting of(C.sub.1) not less than 20% by weight of .alpha.-olefins of 2 to 8 carbon atoms, styrene or substituted styrenes of the general formula I ##STR1## where R and R.sup.1 is alkyl of 1 to 8 carbon atoms, hydrogen and/or halogen and n is 0, 1 or 2, or a mixture of these monomers,(C.sub.2) not less than 0.5% by weight of a polymerizable monomer containing epoxide groups,and/or(C.sub.3) not less than 0.05% by weight of a halobenzyl-containing polymerizable monomer having the structural unit (II) ##STR2## where X is halogen and R.sup.2 and R.sup.3 are each alkyl of 1 to 8 carbon atoms or hydrogen and n is 1, 2 or 3,and/or(C.sub.4) not less than 0.05% by weight of a polymerizable monomer containing oxazoline groups,and(C.sub.5) from 0 to 65% by weight of acrylonitrile, methacrylonitrile and further nonionic comonomers, and(D) from 0 to 40% by weight of a rubber impact modifier.
摘要:
Thermoplastic molding materials based on polyphenylene ethers and nylons are prepared in an extruder by a continuous process in which a modified polyphenylene ether is prepared in a first zone of the extruder and is then mixed with nylons and, if required, further additives in one or more further zones.
摘要:
Thermoplastic molding materials contain, as essential components,(A) 5-95% by weight of a polyamide;(B) 5-95% by weight of a modified polyphenylene ether, prepared from(b.sub.1) 4.95-99.9% by weight of a polyphenylene ether,(b.sub.2) 0-90% by weight of a vinylaromatic polymer,(b.sub.3) 0.05-10% by weight of one or more compounds from the group consisting of(b.sub.31) an .alpha.,.beta.-unsaturated dicarbonyl compound,(b.sub.32) a monomer containing amide groups and a polymerizable double bond and(b.sub.33) a monomer containing lactam groups and a polymerizable double bond,(b.sub.4) 0-80% by weight of further graft-active monomers and(b.sub.5) 0.01-0.09% by weight of a free radical initiator,(C) 0-90% by weight of an unmodified polyphenylene ether,(D) 0-45% by weight of a vinylaromatic polymer and(E) 0-40% by weight of a rubber impact modifier.
摘要:
Polyacetal molding materials which contain, as a stabilizer, from 0.1 to 10% by weight of a melamine resin, the latter being a melamine-formaldehyde condensate, having a mean degree of polymerization of from 1.2 to 6.0 and a melamine:formaldehyde ratio of from 1:2 to 1:5.5, which has been partially etherified with a C.sub.1 -C.sub.4 -alkanol so that the ratio melamine:ether radicals is from 1:1.5 to 1:5.0 and the ratio melamine:free methylol groups is from 1:0.5 to 1:3. The molding materials can be converted to moldings which can be used industrially at elevated ambient temperatures.