Melt-processable, radiation cross-linkable E-CTFE copolymer compositions

A copolymer composition which comprises an admixture of an ethylene/chlorotrifluoroethylene copolymer and by weight of the copolymer, (a) about 0.1 to 5 % of a radiation cross-linking promoter selected from the group consisting of triallylisocyanurate, triallylcyanurate, triallylphosphite, diallylfumarate, diallylisophthalate and diallylterephthalate, (b) about 0.01 tp 5 % of an anti-oxidant selected from the group consisting of (1) mixtures of a phosphite or an organic polyhydric phenol and a salt of a carboxylic acid and a metal of Group II of the Periodic Table, (2) alkylated phenols and bisphenols having 1 to 18 carbon atoms in the alkyl chain, (3) alkylidene bis, tris and polyphenols having 1 to 8 carbon atoms in the alkylidene chain, and (4) mixtures of (1), (2) or (3) with an ester or alkali metal salt of thiodipropionic acid and (c) about 0.1 to 30 percent of an acid scavenger comprising an oxide of a metal of Group II of the Periodic Table.