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发明授权
US5780168A Polypropylene composition for laminated and oriented film and laminated and oriented film thereof 失效
用于层压和取向膜的聚丙烯组合物及其层压和取向膜

Polypropylene composition for laminated and oriented film and laminated and oriented film thereof
摘要：
A propylene-.alpha.-olefin random copolymer composition for use in a laminated and oriented film. The composition includes: (A) from 75 to 95% by weight of a crystalline propylene random copolymer obtained by gas-phase polymerization of propylene and an .alpha.-olefin wherein the amount of components of the copolymer which are soluble in xylene at 20.degree. C. is less than 15% by weight, the propylene content is from 73 to 97% by weight, the .alpha.-olefin content is from 3 to 27% by weight, and (B) from 5 to 25% by weight of a propylene random copolymer of propylene and .alpha.-olefin, wherein the propylene content is from 50 to 60% by weight, and the .alpha.-olefin content is from 35 to 65 % by weight, wherein the amounts of components in the propylene-.alpha.-olefin random copolymer composition which are soluble in xylene at 20.degree. C. is less than 30% by weight.
摘要（中）：

用于层压和取向膜的丙烯-α-烯烃无规共聚物组合物。 该组合物包括：（A）75至95重量％的通过丙烯和α-烯烃的气相聚合获得的结晶丙烯无规共聚物，其中在20℃下可溶于二甲苯的共聚物的组分量 小于15重量％，丙烯含量为73至97重量％，α-烯烃含量为3至27重量％，（B）5至25重量％的丙烯无规 丙烯和α-烯烃的共聚物，其中丙烯含量为50至60重量％，α-烯烃含量为35至65重量％，其中丙烯-α-烯烃无规共聚物中组分的量 在20℃下可溶于二甲苯的组合物小于30重量％。

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