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, polysulfonates, 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 phosphorous oxy acid, a salt of a phosphorous oxy acid and an ester of a phosphorous oxy acid, and (b) a compound of the formula R(CH.sub.2 X).sub.n wherein R represents a monocyclic aromatic hydrocarbon radical or a di- or polycyclic-aromatic hydrocarbon radical the rings of which are fused or are linked directly and wherein R is unsubstituted other than by (CH 2 X) or is substituted by one or more groups selected from alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, hydroxyl, alkoxy of 1 to 12, alkoxy of 1 to 12 carbon atoms which contains an epoxide group, cycloalkoxy of 5 to 12 carbon atoms, aralkyloxy of 7 to 12 carbon atoms, acyloxy of 1 to 12 carbon atoms, carboxyl and carboalkoxy of 2 to 12 carbon atoms, n is an integer of 2 to 12, and X is OH.