Curable ethylene copolymer blend composition

A curable composition which comprises a blend of

• a) a dipolymer having copolymerized units of ethylene and a monomer selected from the group consisting of C.sub.1 -C.sub.8 alkyl acrylates and C.sub.1 -C.sub.8 alkyl methacrylates, wherein the copolymerized ethylene units are present in an amount of from 20-85 weight percent;
• b) a copolymer comprising copolymerized units of i) 25-70 weight percent ethylene, ii) 25-70 weight percent of a comonomer selected from the group consisting of C.sub.1 -C.sub.8 alkyl acrylates, C.sub.1 -C.sub.8 alkyl methacrylates, and vinyl esters of C.sub.2 -C.sub.8 carboxylic acids, and iii) at least one 3-12 carbon atom carboxylic acid selected from the group consisting of alpha, betaunsaturated monocarboxylic acids, alpha, beta-unsaturated dicarboxylic acids, and monoesters of alpha, beta-unsaturated dicarboxylic acids, wherein the carboxylic acid is present in an amount sufficient to provide 0.1-10 weight percent of carboxylic acid groups and the carboxylic groups of the copolymer are neutralized with metal ions to a degree of at least 10%;
• and
• c) 0.5-6 parts per hundred parts combined component a) and component b) of an organic peroxide;
• wherein the weight ratio of component a) to component b) is 99:1 to 70:30 and the blend is substantially free of foaming agents.