Patent ID: 7091266
Filing Date: 2006-08-15
Classification: C08K,C08L

Abstract:
1. A flame-retardant composition comprising from 20 to 95% by weight of (a) a polyphenylene ether resin having a number average molecular weight of 500 to 5,000, and from 80 to 5% by weight of (b) a phosphazene compound wherein said phosphazene compound comprises a total of 95% by weight or more of a cyclic phosphazene compound represented by formula (1) and/or a straight chain phosphazene compound represented by formula (2): where n represents an integer of 3 to 15; m represents an integer 3 to 1,000; X represents an aryloxy group represented by formula (3): (where R1, R2, R3, R4 and R5 each independently represent hydrogen atom, an alkyl or alkoxy group having 1–5 carbon atoms or a phenyl group), a naphthyloxy group, or an alkyloxy group having 1–6 carbon atoms; Y represents —N═P(O)(X) or —N═P(X) wherein said phosphazene compound comprises 80% by weight or more of a cyclic phosphazene trimer and/or tetramer.