The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 2004
Filed:
Jul. 23, 2002
David M. Dean, West Chester, PA (US);
Richard James Arhart, Wilmington, DE (US);
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The present invention relates a process for manufacturing polymer coated wire and cable and an electrically conductive wire having a metal core and an outer electrically-insulative, polymer coating capable of withstanding temperatures as high as 150° C., wherein the polymer composition contains polyphenylene sulfide, a polymeric grafting agent and an ethylene copolymer. The polymeric grafting agent is a copolymer of at least about 50% by weight ethylene, about 0.5% to about 15% by weight of a reactive comonomer (e.g. unsaturated epoxide of 4-11 carbon atoms) and the ethylene copolymer comprises at least about 50% by weight ethylene and about 1% to about 35% by weight of an acid-containing unsaturated mono-carboxylic acid comonomer. The molar ratio of the reactive comonomer in the polymeric grafting agent to the unsaturated mono-carboxylic acid comonomer of the ethylene copolymer is to be maintained between 1.0 and 5.5 in order to achieve the desired polyphenylene sulfide wire coating properties.