C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/08 (2006.01) C08K 3/04 (2006.01) C08L 33/04 (2006.01) H01B 1/24 (2006.01) H01B 3/42 (2006.01) H01B 12/00 (2006.01)
Patent
CA 2245343
A composition of matter useful for strippable shields for electric power cables comprises: a base polymer which is a copolymer of ethylene with a mono-unsaturated ester; conductive carbon black in an amount to give the composition an electrical resistivity below 500 .OMEGA.m; and as adhesion-controlling additive, a copolymer of ethylene with a mono-unsaturated ester containing from 0.5 to 2% by weight of side-chains each of which comprises an inflexible ring structure bonded to a backbone carbon atom of the copolymer with at most five atoms interposed between them. The compositions have the advantage of being less rubbery than current strippable-screen compositions and can be made successfully with copolymers of lower ester content.
Easter Mark Richard
Keen Fiona Eleanor
Bicc Public Limited Company
Fetherstonhaugh & Co.
General Cable Technologies Corporation
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