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