| 摘要 |
1. Use of mixtures containing (a) 40 to 95% by weight of halogen-free, sulphur-free and phosphorus-free thermoplastic polycarbonates with ~Mw of 10,000 to 200,000, (b) 0 to 60% by weight of halogen-free styrene polymers which contain, polymerised therein, at least 50% by weight of styrene or halogen-free styrene derivatives and up to 50% by weight of halogen-free acrylic or methacrylic compounds or of an unsaturated dicarboxyl anhydride, and have average molecular weights ~Mw of between 10,000 and 600,000 and (c) 0 to 60% by weight of halogen-free graft polymers of the halogen-free monomers included under (b) on halogen-free butadiene, acrylic copolyester or polyolefine rubbers, which are based on a rubber/graft monomer weight ratio of 93% : 7% to 5% : 95%, the sum of components (a)+(b)+(c) in the mixtures being in each case 100% by weight, as flame-proofing agents for the production of articles of thermoplastic plastics which are to be provided with a flame-resistant finish, characterised in that the halogen-free, sulphur-free and phosphorus-free polycarbonates contain 25 mole % to 100 mole % of bifunctional structural units of the formula (I) see diagramm : EP0146023,P7,F4 and 75 mole % to 0 mole % of bifunctional structural units of the formula (III), see diagramm : EP0146023,P7,F5 wherein -O-D-O- is a halogen-free, sulphur-free and phosphorus-free diphenolate radical except according to structure I. |
