Electric cable and a method and composition for the production thereof
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United States of America Patent
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Jul 9, 2002
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app pub date -
Mar 24, 2000
filing date -
Oct 20, 1997
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Abstract
A semiconducting composition for the inner semiconducting layer of an electric cable, an electric cable incorporating the composition, and a method of producing a cross-linked inner semiconducting layer of an electric cable are disclosed. The semiconducting composition comprises, based on the total weight of the composition, (a) 30-90% by weight of an ethylene copolymer, (b) carbon black in an amount at least sufficient to make the composition semiconducting, (c) 0-8% by weight of a peroxide cross-linking agent, (d) 0-8% by weight of conventional additives, characterized in that said ethylene copolymer (a) is an ethylene-methyl (meth)acrylate copolymer, preferably comprising 5-25% by weight of methyl(meth)acrylate, based on the weight of the copolymer.
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