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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 8785516 B1

PDFFull Text
Date of Patent:
Jul. 22, 2014

Filed:

May. 02, 2013

Fluoropolymer dispersion treatment employing ultraviolet light and oxygen source to reduce fluoropolymer resin 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);

Dipti Dilip Khasnis, Wilmington, DE (US);

Adam Paul Smith, Vienna, WV (US);

Assignee:

E I du Pont de Nemours and Company, Wilmington, DE (US);

Attorney:
Primary Examiner:

Ling Choi

Assistant Examiner:

Jessica E Whiteley

Int. Cl.
CPC ...
B29C 71/04 (2006.01); C08F 2/46 (2006.01); B01J 19/12 (2006.01); C08F 114/26 (2006.01); C08F 214/26 (2006.01); C08F 6/00 (2006.01); C08J 3/28 (2006.01);
U.S. Cl.
CPC ...
B01J 19/123 (2013.01); C08F 114/26 (2013.01); C08F 214/262 (2013.01); C08F 6/006 (2013.01); C08F 2800/20 (2013.01); C08J 2327/18 (2013.01); C08J 3/28 (2013.01);
Abstract

Process for reducing thermally induced discoloration of fluoropolymer resin produced by polymerizing fluoromonomer in an aqueous dispersion medium to form aqueous fluoropolymer dispersion and isolating said fluoropolymer from said aqueous medium to obtain said fluoropolymer resin. The process comprises exposing the aqueous fluoropolymer dispersion to ultraviolet light in the presence of an oxygen source.

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Brothers, Paul. (2014). Fluoropolymer dispersion treatment employing ultraviolet light and oxygen source to reduce fluoropolymer resin discoloration (U.S. Patent No. 8785516). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8785516

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

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