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:
Nov. 03, 2015
Filed:
May. 02, 2013
Applicant:
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Inventors:
Paul Douglas Brothers, Chadds Ford, PA (US);
Gregory Allen Chapman, Washington, WV (US);
Subhash Vishnu Gangal, Hockessin, DE (US);
Assignee:
THE CHEMOURS COMPANY FC, LLC, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 114/26 (2006.01); C08F 114/18 (2006.01); C08F 8/06 (2006.01); C08F 214/26 (2006.01); C08F 6/00 (2006.01); C08F 6/28 (2006.01); C08F 14/26 (2006.01); C08F 6/22 (2006.01); B29C 47/00 (2006.01); B29K 27/18 (2006.01); B29C 47/10 (2006.01);
U.S. Cl.
CPC ...
C08F 8/06 (2013.01); C08F 6/006 (2013.01); C08F 6/22 (2013.01); C08F 6/28 (2013.01); C08F 14/26 (2013.01); C08F 214/262 (2013.01); B29C 47/0004 (2013.01); B29C 47/0021 (2013.01); B29C 47/1072 (2013.01); B29K 2027/18 (2013.01); C08F 2800/20 (2013.01); C08F 2810/10 (2013.01);
Abstract
Process for reducing thermally induced discoloration of melt-processible fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises melt extruding said fluoropolymer resin to produce molten fluoropolymer resin; and exposing said molten fluoropolymer resin to an oxygen source during said melt extruding.