Flame-retardant, impact-resistant polyphenylene ether compositions

Abstract From the Canadian patent

Self-extinguishing thermoplastic molding compositions having high impact resistance and good surface appearance are disclosed which comprise, in admixture (a) a normally flammable, composition comprising a polyphenylene ether resin and a polymer selected from the group consisting of a hydrogenated A-B-A1 block copolymer and an acrylic resin modified diene rubber containing resin, and (b) an aromatic phosphate compound in an amount at least sufficient to render the normally flammable composition self-extinguishing and, after molding impact, resistant and having a high surface glass as required for use in many commercial applications.