| abstract |
Disclosed herein is a composition comprising from 5 to 20 parts by weight per hundred parts by weight rubber (phr) of a propylene-a-olefin-diene (PEDM) terpolymer comprising 1 to 10 wt% diene, 5 to 40 wt% a-olefin, and 15 to 85 wt% propylene, said wt% based on the weight of the PEDM terpolymer; and from 80 to 95 phr of an ethylene-based copolymer comprising ethylene, one or more C3 to C12 a-olefins, and, optionally, one or more dienes; wherein the amount of ethylene content of the ethylene-based copolymer (in wt% on the basis of total weight of the ethylene-based copolymer) is greater than the amount of α-olefin content of the PEDM terpolymer (in wt% on the basis of total weight of the PEDM terpolymer). |