HIGH IMPACT MELT-FLOWABLE DUAL CONTINUUM MELT MIXED POLYMER BLENDS OF POLYPROPYLENE, POLYETHYLENE AND ETHYLENE-PROPYLENE RUBBER

摘要

Melt mixed, melt-flowable blends of polypropylene, at least about 30% polyethylene and from about 4 to about 11% ethylene-propylene copolymer rubber, and method for making same, are disclosed. Such blends possess higher low temperature Izod and Gardner impact strength than conventional impact polypropylene blends, while having a comparable or higher flexural modulus.