Insulated electrical conductors
AssigneeUnion Carbide Corporation
InventorNorman M. Burns, Jr.
Life of this patent
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Abstract
Vulcanizable semi-conducting compositions that can be used to provide strippable insulation shielding compositions for electrical conductors, and articles of manufacture wherein the crosslinked product of said vulcanizable compositions are directly bonded to a crosslinked polyolefin substrate.
Claims23
A vulcanizable semi-conductive insulation shielding composition consisting essentially of, based on the total weight of said composition, (A) about 40 to 90 weight percent of an ethylene-vinyl acetate copolymer containing from about 27 to 45 weight percent of vinyl acetate based on the total weight of said copolymer, (B) about 3 to about 15 weight percent of a low density low molecular weight polyethylene homopolymer having a number average molecular weight of about 2,000 to about 10,000, a density of about 0.85 up to about 0.93 grams per cubic centimeter and a melt index of 20 to 500 when measured according to ASTM D-1238 at 125.degree. C., (C) about 8 to about 45 weight percent of carbon black, and (D) about 0.2 to about 5 weight percent of an organic peroxide crosslinking agent.
Dependencies are inferred from the claim text.