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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.:

US 9175115 B1

PDFFull Text
Date of Patent:
Nov. 03, 2015

Filed:

May. 02, 2013

Fluoropolymer resin treatment employing heating and oxygen source to reduce discoloration

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);

Adam Paul Smith, Vienna, WV (US);

Assignee:

THE CHEMOURS COMPANY FC, LLC, Wilmington, DE (US);

Attorney:
Primary Examiner:

Peter D Mulcahy

Assistant Examiner:

Henry Hu

Int. Cl.
CPC ...
C08F 114/26 (2006.01); C08F 114/18 (2006.01); C08F 214/26 (2006.01); C08F 6/22 (2006.01); C08F 6/00 (2006.01); C08F 6/28 (2006.01);
U.S. Cl.
CPC ...
C08F 114/26 (2013.01); C08F 214/262 (2013.01); C08F 6/006 (2013.01); C08F 6/22 (2013.01); C08F 6/28 (2013.01); C08F 2800/20 (2013.01);
Abstract

Process for reducing thermally induced discoloration of 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: heating the fluoropolymer resin to a temperature of about 160° C. to about 400° C.; and exposing the heated fluoropolymer resin to an oxygen source.

Find Patent Forward Citations

Brothers, Paul. (2015). Fluoropolymer resin treatment employing heating and oxygen source to reduce discoloration (U.S. Patent No. 9175115). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9175115

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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