POLYOLEFIN BLEND COMPOSITIONS

The present disclosure relates to polypropylene-based and polyethylene -based polyolefin compositions having improved impact properties. In at least one embodiment, a polyolefin composition includes an ethylene polymer, a propylene polymer, a propylene -based elastomer, and an ethylene-based plastomer. Compositions of the present disclosure can have one or more of: a Notched Charpy impact strengthat 23 DEG C of 8 kJ/m2 or greater, a Notched Izod Impact Strength at 23 DEG C of 6 ft-lb/in. or greater, an unnotched Izod impact strength at 23 DEG C of 10 ft-lb/in. or greater, and a portion of thecomposition having a submicron domain content of 50% or greater per mm2. 本公开内容涉及具有改进的冲击性能的基于聚丙烯的和基于聚乙烯的聚烯烃组合物。在至少一个实施方案中，聚烯烃组合物包括乙烯聚合物、丙烯聚合物、基于丙烯的弹性体和基于乙烯的塑性体。本公开内容的组合物可以具有以下性质中一个或多个：8kJ/m2或更大的23℃缺口卡毕冲击强度、6ft-lb/in.或更大的23℃缺口Izod冲击强度、10ft-lb/in.或更大的23℃无缺口Izod冲击强度和所述组合物的一部分具有50％或更大的每mm2的亚微米结构域含量。