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. 17, 2006
Filed:
Apr. 27, 2004
Roice Andrus Wille, Malvern, PA (US);
Mehdi Durali, West Chester, PA (US);
Lotfi Hedhli, King of Prussia, PA (US);
Ramin Amin-sanayei, Collegeville, PA (US);
John Schmidhauser, Paoli, PA (US);
Roice Andrus Wille, Malvern, PA (US);
Mehdi Durali, West Chester, PA (US);
Lotfi Hedhli, King of Prussia, PA (US);
Ramin Amin-Sanayei, Collegeville, PA (US);
John Schmidhauser, Paoli, PA (US);
Arkema Inc., Philadelphia, PA (US);
Abstract
Nonfluorinated surfactants selected from C7–C20 linear 1-alkanesulfonates, 2-alkanesulfones, and 1,2-alkanedisulfones are particularly effective for stabilizing emulsions in preparing non-elastomeric fluoropolymers containing at least 71 wt % vinylidene fluoride and having at least a 2% crystalline polyvinylidene fluoride content. Processes for making such fluoropolymers using these surfactants, particularly in combination with one or both of a nonionic polymerization initiator and the use of mechanical coagulation to isolate the product, are also provided, as are fluoropolymers made thereby.