| abstract |
PURPOSE: To obtain a composition of high flame-retardancy and heat and impact resistance, by incorporating polyphenylene ether resin composition with phosphate compound having spiro ring. n CONSTITUTION: The objective composition can be obtained by incorporating (A) polyphenylene ether [pref. poly(2,6-dimethyl-1,4-phenylene) ether] or (B) a composition made up of (i) (pref. 5W95wt% of) polyphenylene ether and (ii) polystyrene resin (pref. of impact-resistant type) with (C) 1W50wt%, based on the whole composition, of a spiro ring-carrying phosphate compound of formula (R is alkylene, phenylene, alkylenephenylene, biphenylene, or (hydrogenated) bisphenol A residue, each being allowed to be substituted by halogen; n≥1, X is H when n=1, but OH when n≥2) (e.g. diphenyl pentaerythritol phosphate). n COPYRIGHT: (C)1985,JPO&Japio |