Flammwidrige thermoplastische Formmassen

摘要

The invention concerns flame-resistant thermoplastic moulding compounds containing: A) between 1 and 97 wt % of at least one polycarbonate, polyamide, polyester, polyolefin or polymethacrylate or a mixture of the above-mentioned thermoplastic polymers; B) between 1 and 97 wt % of at least one graft polymer consisting of: b1) between 40 and 80 wt % of a graft basis comprising a rubber-elastic polymer with a glass transition temperature of less than 0 DEG C; and b2) between 20 and 60 wt % of a graft overlay comprising: b21) between 50 and 95 wt % vinylaromatic monomers of general formula PHI , in which R designates a C1-C8 alkyl group or a hydrogen atom and R<1> designates a C1-C8 alkyl group, and n has the value 0, 1, 2 or 3 or methylmethacrylate or mixtures thereof; and b22) between 5 and 50 wt % acrylonitrile, methacrylonitrile, methylmethacrylate, maleic acid anhydride or mixtures thereof; C) between 1 and 97 wt % of at least one thermoplastic copolymer comprising: c1) between 50 and 95 wt % vinylaromatic monomers of general formula PHI or methylmethacrylate or mixtures thereof; and c2) between 5 and 50 wt % acrylonitrile, methacrylonitrile, methylmethacrylate, maleic acid anhydride or mixtures thereof; D) between 1 and 50 wt % flame retardants containing iminophosphoranes; and E) between 0 and 50 wt % further additives.