阅读说明：本技术 用于膜的聚丙烯 (Polypropylene for films ) 是由 S·P·施密特 C·A·斯波福德 G·J·派勒特 于 2019-09-25 设计创作，主要内容包括：本发明的公开内容提供具有高光泽和最小或没有雾度同时还具有高熔体强度(高耐温性)和相对高劲度的聚丙烯组合物。该聚丙烯组合物含有一种或多种基础聚丙烯(例如,被修剪的聚丙烯(tPP))和一种或多种澄清剂。该基础或被修剪的聚丙烯含有至少50mol％丙烯且具有范围为7至22的分子量分布(Mw/Mn),小于2,500,000g/mol的z-均分子量,至少0.95的支化指数(g′-(vis))和使用拉伸流变仪在190℃下测定的小于20cN的熔体强度。可由一种或多种高熔体强度聚丙烯(HMS PP)生产该基础或被修剪的聚丙烯。(The present disclosure provides compositions having high gloss and minimal or no shinePolypropylene compositions having haze while also having high melt strength (high temperature resistance) and relatively high stiffness. The polypropylene composition contains one or more base polypropylenes (e.g., a trimmed polypropylene (tPP)) and one or more clarifying agents. The base or trimmed polypropylene contains at least 50 mol% propylene and has a molecular weight distribution (Mw/Mn) ranging from 7 to 22, a z-average molecular weight of less than 2,500,000g/mol, a branching index (g' vis ) And a melt strength of less than 20cN determined using an extensional rheometer at 190 ℃. The base or trimmed polypropylene may be produced from one or more high melt strength polypropylenes (HMS PP).)