Flame-resistant polymer compositions

Claim 1

A composition which comprises a polymer selected from the group consisting of (1) a homopolymer or copolymer of styrene or α-methyl styrene, (2) a blend of (1) with polyphenylene oxide, polysulfone, vinyl chloride resin or polycarbonate, (3) a styrene cured unsaturated polyester resin, and (4) a polymer containing an aromatic group in the polymer chain and selected from the group consisting of polycarbonates, polyphenylene ethers, polysulfides, polyurethanes, polyhydrazides, linear polyesters, polysulfones, polyamides,polyimides, polybenzimidazoles and polyanhydrides, and a flame-retarding combination of (a) a phosphorus compound selected from the group consisting of a phosphine oxide, a phosphorus oxy acid, a salt of a phosphorus oxy acid and an ester of a phosphorus oxy acid, and (b) a compound of the formula (A).sub.a (--CH.sub.2 --).sub.b [--CH.sub.2 (OCH.sub.2).sub.m OCH.sub.2 --].sub.c (--CH.sub.2 OH).sub.d wherein A is an unsubstituted aromatic hydrocarbon, an aromatic hydrocarbon substituted by up to two substituents selected from the group of halogen, alkyl with 1 to 4 cabon atoms, haloalkyl with 2 to 4 carbon atoms, hydroxyl, alkoxy with 1 to 4 carbon atoms or acyloxy with 2 to 4 carbon atoms, or diphenyl ether radical, a is 2 to 20 and is equal to b+c+1, b is 0 to 19, c is 0 to 19, d is 0 to 2a, and m is 0 to 10, there being present per molecule (a) at least two of the groups (CH 2 OH), (b) at least two of the groups (--CH 2 OCH 2 --) or (c) at least one group (CH 2 OH) and one group (--CH 2 OCH 2 --) and wherein the groups (--CH 2 --), [--CH 2 (OCH 2 ) m OCH 2 --] and (--CH 2 OH) are all directly attached to the nucleus of radicals A only.