公开(公告)号：US20090111946A1

公开(公告)日：2009-04-30

申请号：US12246302

申请日：2008-10-06

申请人： SUDHIN DATTA ,  CHARLES L. SIMS ,  JAMES NORRIS COFFEY

发明人： SUDHIN DATTA ,  CHARLES L. SIMS ,  JAMES NORRIS COFFEY

IPC分类号： C08L23/00

CPC分类号： C08L23/10 ,  C08L23/142 ,  C08L23/145 ,  C08L2205/02 ,  C08L2666/06

摘要： Provided are heterogeneous blend compositions comprising; a) from 1% to 99% by weight of the blend of a first polymer component comprising a copolymer of 5% to 35% by weight of the first polymer component consisting predominantly of alpha olefin derived units and 65% to 95% by weight of the first polymer component of propylene derived units having a crystallinity of 0.1% to about 25% from isotactic polypropylene sequences, a melting point of from 45° C. to 105° C., and wherein the Melt Flow Rate (MFR@230 C) of the first polymer component is between 300 g/10 min to 5000 g/10 min b) from 1% to 99% by weight of the blend of a second polymer component comprising isotactic polypropylene and random copolymers of isotactic propylene, wherein the percentage of the copolymerized alpha-olefin in the copolymer is between 0.0% and 9% by weight of the second polymer component and wherein the second polymer component has a melting point greater than about 110° C., wherein the first polymer component has less than 1000 ppm of reaction products arising from the chemical reaction of a molecular degradation agent. The provided compositions are useful in high temperature applications.

摘要翻译： 提供了非均相共混组合物，其包含： a）1重量％至99重量％的第一聚合物组分的共混物，其包含5重量％至35重量％的主要由α-烯烃衍生单元组成的第一聚合物组分和65重量％至95重量％ 来自全同立构聚丙烯序列的结晶度为0.1％至约25％的丙烯衍生单元的第一聚合物组分，熔点为45℃至105℃，其中熔体流动速率（MFR @ 230℃） 的第一聚合物组分的量为300g / 10min至5000g / 10min，b）1重量％至99重量％的包含全同立构聚丙烯的第二聚合物组分和全同立构丙烯的无规共聚物的共混物，其中百分比 共聚物中共聚的α-烯烃的含量为第二聚合物组分的0.0％至9％，其中第二聚合物组分的熔点大于约110℃，其中第一聚合物组分的含量小于1000ppm 的反应产物出现 这是分子降解剂的化学反应。 所提供的组合物可用于高温应用。