Patent ID: 7915339

Claim:
An insulation composition for electric cable consisting of: (a) a metallocene ethylene-butene polymer; (b) a filler; and (c) an additive blend of: (i) an amine antioxidant selected from the group consisting of 1,2-dihydro-2,2,4-trimethylquinoline, octylated diphenylamine, diphenyl-p-phenylene-diamine, 4,4′-di-(1,1-dimethylbenzyl)-diphenylamine, ethoxy-1,2-dihydro-2,2,4-trimethylquinoline, p,p′-dioctyldiphenylamine, N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylene diamine, N-phenyl-N′-isopropyl-p-phenylene diamine, and p-phenylene diamine, and (ii) a hindered amine light stabilizer.