Patent ID: 7906586

Claim:
A thermoplastic composition comprising the following: at least one ethylene/alpha-olefin interpolymer having a PRR between about 8 and 70, a melt strength of at least 5 cN, a density less than 0.91 g/cc, and a “0.1 radian per second, at 190° C., viscosity” of at least 200,000 poise; and at least one polypropylene polymer selected from the group consisting of polypropylene homopolymers and propylene/alpha-olefin interpolymers, and wherein the weight ratio of ethylene/alpha-olefin interpolymer to polypropylene polymer in the composition being from “greater than 50: less than 50” to 90:10, and wherein the thermoplastic composition comprises a “190° C. shear thinning index (STI)” of 20 or more, and two of the three following heat related characteristics: a) a 140° C. stress strain slope of 0.20 or more; b) an upper service temperature (UST) of 115° C. or more; and c) a 120° C. hot creep elongation at 8.7 psi of less than 100%; and wherein the ethylene/alpha-olefin interpolymer has T-type long chain branching.