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:
Jul. 24, 2007
Filed:
Apr. 05, 2004
Ralph Munson Aten, Chadds Ford, PA (US);
Ralph Munson Aten, Chadds Ford, PA (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Melt-fabricable, tough copolymer of tetrafluoroethylene and fluorinated vinyl ether is produced in a suspension polymerization process by copolymerizing tetrafluoroethylene and fluorinated vinyl ether in a pressurized, agitated reaction vessel which contains aqueous medium, free radical initiator, and a telogen, the aqueous medium being essentially free of fluorine containing organic solvent. The contents of the reaction vessel are agitated during polymerization sufficiently to coagulate copolymer of tetrafluoroethylene and fluorinated vinyl ether. The melt-fabricable, tough copolymer having a melt viscosity of less than about 1×10Pa·S is isolated directly from the reaction vessel.