The present invention provides a composition comprising a blend of:
(A) from about 90 to about 10 % by weight of polymethylpentene, wherein the polymethylpentene has a molecular weight between from about 200,000 to about 700,000, and a melt flow rate between from about 20 grams/10 minutes to about 200 grams/10 minutes;
(B) from about 10 to about 90 % by weight of polypropylene, wherein the polypropylene has a molecular weight between from about 150,000 to about 350,000, and a melt flow rate between from about 1 gram/10 minutes to about 10 grams/10 minutes;
whereby the blend of (A) and (B) has improved elongation and improved release properties.
The invention further provides a blend with improved tensile strength, improved elongation, and improved release properties, and a method of producing a article with improved release properties from the blend.
本发明提供了一种由以下物质混合而成的组合物:
(A) 聚甲基
戊烯的重量占约 90%至约 10%,其中聚甲基
戊烯的分子量在约 200,000 至约 700,000 之间,熔体流动速率在约 20 克/10 分钟至约 200 克/10 分钟之间;
(B) 聚
丙烯,按重量计,约占 10%至约 90%,其中聚
丙烯的分子量在约 150,000 至约 350,000 之间,熔体流动速率在约 1 克/10 分钟至约 10 克/10 分钟之间;
由此,(A)和(B)的混合物具有更好的伸长率和更好的释放性能。
本发明进一步提供了一种具有改进的拉伸强度、改进的伸长率和改进的脱模性能的混合物,以及一种用该混合物生产具有改进的脱模性能的制品的方法。