POLYMER COMPOSITIONS WITH IMPROVED RETENTION OF PROPERTIES UNDER MECHANICAL AND THERMAL STRESSES

摘要

The invention provides a composition comprising the following: A) an ethylene/a olefin/diene interpolymer; B) an ethylene/a olefin copolymer with a Mooney Viscosity [ML(1+4) at 125°C] greater than 40; and C) a peroxide; and wherein the a olefin of the ethylene/a olefin copolymer of component B comprises at least four carbon atoms; and wherein component A is present in an amount from 50 to 95 weight percent based on the sum weight of components A and B.