| 摘要 |
PURPOSE:To improve impact strength by melt molding a compsn. comprising a saponified ethylene-vinyl acetate copolymer, an ethylene-propylene copolymer elastomer, and a specific graft polymer. CONSTITUTION:100 pts.wt. polyolefin resin having a degree of polymn. of 350-45000 and a melt flow rate of 0. 1-50g/10min is allowed to undergo the graft reaction with 0.05-10 pts.wt. ethylenically unsatd. carboxylic acid (deriv.) and then reacted with 0. 01-1mol (per mol of carboxyl group) of a polyamide having a degree of polymn. of 80-1000 to give a graft polymer. Then, a compsn. comprising 50-99.5wt.% saponified ethylene-vinyl acetate copolymer having an ethylene content of 20-60mol% and a degree of saponification of 95-mol% or higher, 0.4-50wt.% ethylene-propylene copolymer elastomer having a density of 0.85-0.87g/cm<3> and a glass transition point of -50 to -60 deg.C, and 0.1-15wt.% the graft polymer is melt molded at 170-260 deg.C). |
