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US 5,183,850 AGranted
Graft polymers and their use as flameproofing agents
AssigneeBayer Aktiengesellschaft
InventorsChristian Lindner, Herbert Eichenauer
Life of this patent
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Abstract
Graft polymers of a) 5 to 95% by weight of a copolymer of 20 to 60% by weight of a 1,3,5-triazine derivative corresponding to formula (I) ##STR1## in which R=H, C.sub.1-2 alkyl, and 40 to 80% by weight of other vinyl monomers as the graft base and b) 5 to 95% by weight of a thermoplastic polymer as the graft shell, their use as thermoplastic molding compounds and as flame-proofing agents for other synthetic materials.
Claims2
A flameproofed molding composition comprising:
- I) 80 to 99.9% by weight of a synthetic material selected from polystyrene, polymethyl methacrylate, styrene/acrylonitrile copolymer, methyl methacrylate/styrene copolymer, styrene/maleic anhydride copolymer and graft polymers on thermoplastics containing a rubber base;
- and
- II) 0.1 to 20% by weight of a graft polymer of
- a) 5 to 95% by weight of a copolymer of 20 to 60% by weight of a 1, 3, 5-triazine derivative corresponding to formula (I) ##STR3## in which R=H, C.sub.1-2 alkyl, and 40 to 80% by weight of other vinyl monomers as the graft base and
- b) 5 to 95% by weight of a polymer of styrene, .alpha.-methyl styrene, p-methyl styrene, acrylonitrile, methacrylonitrile, C.sub.1-8 alkyl acrylates, C.sub.1-8 alkyl methacrylates, maleic imides, maleic anhydride, vinyl ethers, vinyl esters, ethylene, methacrylamide, acrylic acid, methacrylic acid, styrene, sulfonic acid or mixtures thereof as the graft shell.
2 more elements
Dependencies are inferred from the claim text.