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Thermoplastic moulding compositions based on polycarbonate/graft polymer mixtures
| Details |
Inventors: Lindner, Christian; Koch, Otto; Kress, Hans-Jurgen; Peters, Horst;
Assignee: Bayer Aktiengesellschaft (Leverkusen, DE)
Primary Examiner: Ziegler; Jacob
Assistant Examiner:
Attorney, Agent or Firm: Connolly & Hutz
The present invention relates to thermoplastic moulding compositions containing thermoplastic polycarbonates, graft polymers, rubber-free copolymers and, if appropriate, copolymeric rubbers, and also, if appropriate, conventional additives, which are characterized in that the rubber-free copolymers contain internal epoxide compounds. |
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DETAILED DESCRIPTION We claim: 1.
A thermoplastic molding composition consisting essentially of (A) 10 to 80 parts by weight of an aromatic thermoplastic polycarbonate, (B) 10 to 60 parts by weight of a graft polymer of ethylenically unsaturated monmers grafted onto a rubber, with a rubber content of 5 to 80% by weight, based on the weight of component (B), and (C) 10 to 60 parts by weight of at least one terpolymer of (i) styrene, a-methylstyrene, a halogenostyrene, a ring-substituted C.
sub.
1 -C.
sub.
5 -alkylstyrene, or a mixture thereof with (ii) acrylonitrile, methacrylonitrile, or a mixture of both with (iii) 0.
05 to 5% by weight, based on the total weight of component (C), of an ethylenically unsaturated copolymerized epoxide comound, in which the weight ratio of the monomers of (i) to those of (ii) is between 90:10 and 50:50 and the sum of (A), (B) and (C) being 100 parts by weight.
2.
A moulding composition according to claim 1 wherein at least one polymer of component C contains 0.
1 to 3% by weight of the copolymerized epoxide compound, based on the total weight of component C.
3.
A moulding composition according to claim 1 wherein the weight ratio of the monomers of (i) to those of (ii) is between 80:20 and 65:35.
4.
A moulding composition according to claim 1 wherein the ethylenically unsaturated, copolymerized epoxide compound in component C is glycidyl (meth)acrylate.
5.
A moulding composition according to claim 1 having a halogen content of 0.
5% by weight of 8% by weight, based on the total weight of the moulding composition.
6.
A moulding composition according to claim 5 which additionally contains 0.
5 to 5% by weight of Sb.
sub.
2 O.
sub.
3, based on the total weight of components A+B+C+Sb.
sub.
2 O.
sub.
3 and halogen compound.
7.
A moulding composition according to claim 1 additionally containing at least one extra component selected from the group consisting of pigments, lubricants, antistatic agents, plasticizers, dyestuffs and fillers.
8.
A thermoplastic moulding composition according to claim 1 wherein component (C) (i) is styrene and component (C) (ii) is acrylonitrile
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Adhesives and Rubbers 
