作者: Chung-Sin Su
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摘要: A film forming composition was prepared which comprises a homogeneous mixture of (a) from 2% to 10% by weight polyisobutylene having Staudinger molecular 3,000 50,000; (b) 3% 20% an ethylene-propylene copolymer rubber melt index 0.2 2.0 dg/min. and ethylene/propylene copolymerization ratio 30/70 70/30 (c) the remainder being olefin polymer selected polyethylene density 0.915 0.930 gm/cc 0.3 5.0 ethylene-vinyl acetate wherein vinyl up copolymer. Film exhibited improved cling properties down at least -40° C.