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:
Dec. 13, 2011
Filed:
Jul. 25, 2008
Thomas Robert Earnest, Jr., Wilmington, DE (US);
Daniel A. Favereau, Chambesy, CH;
Niall D. Mckee, West Grove, PA (US);
Patricia A. Tooley, Dickson, TN (US);
Thomas Robert Earnest, Jr., Wilmington, DE (US);
Daniel A. Favereau, Chambesy, CH;
Niall D. McKee, West Grove, PA (US);
Patricia A. Tooley, Dickson, TN (US);
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
The present invention relates to a partially-crystalline copolymer comprising tetrafluoroethylene, hexafluoropropylene in an amount corresponding to hexafluoropropylene index (HFPI) of from about 2.8 to 5.3, and preferably from about 0.2% to 3% by weight of perfluoro(alkyl vinyl ether), said copolymer having less than about 50 ppm alkali metal ion, having a melt flow rate of within the range of about 30±3 g/10 min, and having no more than about 50 unstable endgroups/10carbon atoms and which can be extruded at high speed onto conductor over a broad polymer melt temperature range to give insulated wire of high quality.