| 摘要 |
PURPOSE:To provide the titled compsn. which inhibits bleeding of flame retarder and gives moldings having excellent surface appearance, consisting of a propylene polymer, an acetyl group-contg. polymer, a halogen-contg. flame retarder and a flame-retardant aid. CONSTITUTION:100pts.wt. propylene polymer (A) such as propylene homopolymer or block, random or graft copolymer composed of a major proportion of propylene and a minor proportion of other copolymerizable monomers such as alpha-olefin, an unsaturated carboxylic acid (derivative) or an unsaturated organosilane, 3-50pts.wt. acetyl group-contg. polymer (B) such as ethylene/vinyl acetate copolymer having a vinyl acetate content of 10-90wt%, 1-100pts.wt. halogen-contg. flame retarder (C) [e.g. bis(2,3-dibromopropyl)ether of tetra bromobisphenol A], 0.5-50pts.wt. flame-retardant aid (D) (e.g. Sb2O3) and option ally, additives (E) such as reinforcing filler (e.g. carbon black), antioxidant, etc., are melt-kneaded. |
