Patent ID: 7235609

Claim:
A thermoplastic olefin composition, comprising: a) from more than 50% up to about 90% by weight of polyolefins consisting of: 1) a substantially linear homopolymer of propylene and 2) a long chain branched linear homopolymer of propylene, b) from about 10% to less than 50% by weight of a cross linkable ethylene α-olefin polymer elastomer, and c) a thermally decomposing free radical generating agent comprising at least an azo compound of the general formula R 1 —N═N—R 2 in which R 1 and R 2 can be the same or different alkane groups, present in an amount not exceeding about 1.0 phr of elastomer, wherein the composition is formed by melt blending the components at a temperature sufficient to melt said polyolefins and elastomer and thermally decompose said agent.