Electric cable coated with polyolefin and polymer with ester and epoxy groups
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United States of America Patent
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Aug 20, 2002
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app pub date -
Feb 22, 2001
filing date -
Jun 21, 1995
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Abstract
A polymeric composition for coating electric cables for power transmission at medium/high voltage, having an improved resistance against the formation of the so-called water trees, comprises a polymeric polyolefin base including, in parts by weight to the total weight thereof, from 0.5 to 15 parts of ester groups and from 0.01 to 5 parts of epoxy groups. Electric cables according to the invention comprise at least one electrically conducting core (2) and an insulation coating (5) comprising the aforementioned polymeric composition.
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