Cable semiconducting shield compositions

Details Cable semiconducting shield compositions Cable semiconducting shield compositions

C - Chemistry, Metallurgy

08

L

C08L 9/02 (2006.01) C08K 3/04 (2006.01) H01B 1/24 (2006.01) H01B 7/18 (2006.01)

Patent

CA 2272742

A cable comprising an electrical conductor or a core of electrical conductors surrounded by a moisture cured insulation layer, which is surrounded by, and contiguous with, a semiconducting layer, said semiconducting layer comprising: (a) a copolymer of ethylene and an unsaturated ester selected from the group consisting of vinyl esters, acrylic acid esters, and methacrylic acid esters wherein the ester is present in the copolymer in an amount of about 20 to about 55 percent by weight; (b) a conductive carbon black; and, optionally, (c) a copolymer of acrylonitrile and butadiene wherein the acrylonitrile is present in an amount of about 30 to about 60 percent by weight based on the weight of the copolymer or a silicone rubber; with the proviso that the polymeric component is partially crosslinked in an amount of about 15 to about 35 percent.

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