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US 4,539,370 AGranted
Thermoplastic moulding compositions
AssigneeBayer Aktiengesellschaft
InventorsWerner Nouvertne, Wolfgang Stix
Life of this patent
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Abstract
The present invention relates to thermoplastic moulding compositions of (A) thermoplastic polycarbonates, mixed with (B) thermoplastic polyalkylene terephthalates and, if appropriate, with (C) elastomeric polymers, which are characterized in that they contain (D) a thermoplastic based on a polyether-imide.
Claims11
Thermoplastic moulding compositions containing
- (A) 95 to 50 parts by weight of thermoplastic, aromatic polycarbonates obtained from at least one of hydroquinone, resorcinol, dihydroxy-diphenyls, bis-(hydroxypenyl)-C.sub.1 -C.sub.8 -alkanes, bis-(hydroxyphenyl)-C.sub.5 -C.sub.6 -cycloalkanes, bis-(hydroxyphenyl) sulphides, bis-(hydroxyphenyl) ethers, bis-(hydroxyphenyl) ketones, bis-(hydroxyphenyl) sulphoxides, bis-(hydroxyphenyl) sulphones or .alpha.,.alpha.'-bis-(hydroxyphenyl)-diisopropylbenzenes with weight-average molecular weights M.sub.w between 10,000 and 200,000 with M.sub.w determined by means of light scattering,
- (B) 50 to 5 parts by weight of thermoplastic polyalkylene terephthalate,
- (C) 3 to 15 parts by weight of an elastomeric polymer obtained by polymerizing at least two monomers selected from chloroprene, butadiene, isoprene, isobutene, styrene, acrylonitrile, ethylene, propylene, vinyl acetate and (meth)acrylate esters of alcohols having 1-8 carbon atoms, and having a glass transition temperature of less than -20.degree. C.;
- the sum of the parts by weight of (A)+(B)+(C) in each case being 100 parts by weight, characterized in that the polycarbonate component (A) contains 2 to 16% by weight based on the sum of (A)+(D), of (D) which is a thermoplastic polyether-imide of the formula ##STR2## wherein "n" is the degree of polymerization, which corresponds to a number-average molecular weight (M.sub.n) of between 10,000 and 50,000 g/mol.
1 more element
Dependencies are inferred from the claim text.