Electrical cable, particularly for high voltage direct current transmission or distribution
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United States of America Patent
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Nov 1, 2005
Grant Date -
Feb 17, 2005
app pub date -
Sep 24, 2004
filing date -
Dec 27, 2000
priority date (Note) -
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Abstract
An electrical cable having at least one conductor and at least one extruded insulating coating layer. The extruded insulating coating layer includes a polymeric composition having a polyethylene grafted with at least one unsaturated carboxylic acid of general formula (I): ##STR1## in which: R represents H or CH.sub.3 ; n represents 0 or 1. The grafted polyethylene is derived from polyethylene, a radical initiator and at least one unsaturated carboxylic acid of general formula (I) in free form; and the unsaturated carboxylic acid is present in an amount of between 0.0006% and 0.25% by weight. The amount is expressed as the weight content of --COOH groups relative to the total weight of the polymeric composition.
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