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:
Oct. 03, 2006
Filed:
Mar. 22, 2005
Kenneth Wynne, Midlothian, VA (US);
Takako Ohsaka, Legal Representative, Minoh, JP;
Suresh Shenoy, Richmond, VA (US);
Sadashige Irie, Setsu, JP;
Kenneth Wynne, Midlothian, VA (US);
Takako Ohsaka, legal representative, Minoh, JP;
Suresh Shenoy, Richmond, VA (US);
Sadashige Irie, Setsu, JP;
Daikin Institute of Advanced Chemistry and Technology (DAI-ACT), Orangeburg, NY (US);
Virginia Commonwealth University, Richmond, VA (US);
Abstract
Fluoropolymer materials containing tetrafluoroethylene monomers, such as PTFE, are significantly swollen by supercritical carbon dioxide at high temperatures and pressures. The swollen fluoropolymer is processable by molding, extrusion, and other techniques. In addition, the fluoropolymer may be sintered at significantly lower temperatures compared to a nonswollen fluoropolymer material. The melting temperature of fluorinated polymers containing tetrafluoroethylene and triflouroethylene monomers which are swollen with supercritical carbon dioxide is significantly reduced, thereby permitting manufacturing operations such as extruding and molding to be performed at lower temperatures and with reduced risk of decomposition.