METHOD OF FORMING COATED CONDUCTOR AND COATED CONDUCTOR FORMED THEREBY
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United States of America Patent
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Issued Date -
Aug 30, 2012
app pub date -
Feb 25, 2011
filing date -
Feb 25, 2011
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Abandoned
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Abstract
A coated conductor, such as an insulated electrical wire, is formed by a method that includes a specific poly(arylene ether) composition and an extrusion coating apparatus in which molten poly(arylene ether) composition flows through helical channels en route to covering the previously uncoated conductor. There is a synergy between the use of the helical channels and the poly(arylene ether) composition. Specifically, coated conductor formed using the helical channels and the poly(arylene ether) composition exhibits improved resistance to temperature and humidity variations compared to coated conductor formed using the same poly(arylene ether) composition and so-called heart-sleeve channels. This synergy is not seen with alternative insulation compositions, such as those based on poly(vinyl chloride) and polyethylene.
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