High stability brominated phthalate compounds as flame retardants for resin compositions containing polyphenylene ethers

摘要

Flame resistance of blends of polyphenylene ether resin and high impact polystyrene are upgraded by including both a stable brominated phthalate compound and antimony oxide, which work in synergistic combination in the composi­tions. The present flame retardant combination not only exhibits good heat stability improved flow and impact pro­perties, but unlike many prior art flame retardants of greater volatility, also resists migration to the surface of molded parts.