Patent ID: 6372828
Filing Date: 2002-04-16
Classification: C09K,H01B

Abstract:
A crosslinkable, flame retardant composition useful for high temperature service wire and cable insulation consisting essentially of:(1) 30 to 65 weight percent of a base resin consisting of an ethylene-n-butyl acrylate copolymer, said copolymer containing 10 to 30 weight percent n-butyl acrylate and having a melt index of 0.3 to 10 g/10 min; (2) 1 to 10 weight percent of a stabilizer consisting of a mixture of a zinc salt of a mercaptoboenzimidazole selected from the group consisting of zinc 2-mercaptobenzimidazole and zinc 2-mercaptotolylimidazole, with 4,4â€²-bis (&agr;,&agr;-dimethylbenzyl)diphenylamine, the weight ratio of zinc salt to amine ranging from 0.5:1 to 10:1; (3) 5 to 40 weight percent ethylene bistetrabromophthalimide; (4) 1.5 to 20 weight percent antimony trioxide; (5) 5 to 50 weight percent magnesium hydroxide; and (6) 0.1 to 4 weight percent tertiary organic peroxide selected from the group consisting of dicumyl peroxide and &agr;,&agr;-bis(t-butylperoxy)diisopropylbenzene.