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. 20, 2011
Filed:
Dec. 08, 2006
Ramin Amin-sanayei, Collegeville, PA (US);
Mehdi Durali, West Chester, PA (US);
Patrick Kappler, Ecully, FR;
Greylan Burch, Runnemede, NJ (US);
Ramin Amin-Sanayei, Collegeville, PA (US);
Mehdi Durali, West Chester, PA (US);
Patrick Kappler, Ecully, FR;
Greylan Burch, Runnemede, NJ (US);
Arkema Inc., King of Prussia, PA (US);
Abstract
A novel aqueous polymerization process for making fluoropolymer dispersions is disclosed in which non-ionic non-fluorinated emulsifier is used to produce fluoropolymer emulsions. The emulsifiers contain blocks of polyethylene glycol, polypropylene glycol and/or polytetramethylene glycol. The process and fluoropolymer produced contain no fluorinated surfactant. The fluoropolymers have excellent resistance to discoloration.