Flame resistant, impact modified polycarbonate compositions
First Claim
1. A thermoplastic composition comprisingA) 40 to 95 parts by weight of at least one member selected from the first group consisting of branched aromatic polycarbonate and branched aromatic polyestercarbonate,B) 1 to 25 parts by weight of graft polymer containing one or more graft bases selected from the group of the silicone rubber and silicone acrylate rubber,C) 9 to 18 parts by weight of talc,D) 11.0 to 20 parts by weight of phosphorus-containing flameproofing agent,E) 0 to 3 parts by weight of an anti-dripping agent, andF) 0 to 1.5 parts by weight of at least one member selected from the second group consisting of thermoplastic vinyl (co)polymer and polyalkylene terephthalate.
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Accused Products
Abstract
A flame resistant, impact-modified polycarbonate composition is disclosed. The composition that is suitable especially for preparing thermoformed articles comprises branched aromatic polycarbonate and/or branched aromatic polyester carbonate, a graft polymer containing silicone rubber or silicone acrylate rubber, talc, and a phosphorus-containing flameproofing agent, and meets high requirements in terms of fireproofing. Also disclosed is a process for the preparation of the composition and its use in the production of molded articles.
25 Citations
14 Claims
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1. A thermoplastic composition comprising
A) 40 to 95 parts by weight of at least one member selected from the first group consisting of branched aromatic polycarbonate and branched aromatic polyestercarbonate, B) 1 to 25 parts by weight of graft polymer containing one or more graft bases selected from the group of the silicone rubber and silicone acrylate rubber, C) 9 to 18 parts by weight of talc, D) 11.0 to 20 parts by weight of phosphorus-containing flameproofing agent, E) 0 to 3 parts by weight of an anti-dripping agent, and F) 0 to 1.5 parts by weight of at least one member selected from the second group consisting of thermoplastic vinyl (co)polymer and polyalkylene terephthalate.
Specification