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:
Aug. 21, 2012
Filed:
Jun. 17, 2009
Ming-hong Hung, Wilmington, DE (US);
Bruno Ameduri, Montpellier, FR;
Bernard Boutevin, Montpellier, FR;
Aurelien Soules, Capestang, FR;
Ming-Hong Hung, Wilmington, DE (US);
Bruno Ameduri, Montpellier, FR;
Bernard Boutevin, Montpellier, FR;
Aurelien Soules, Capestang, FR;
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Fluorinated copolymers are prepared via copolycondensation polymerization in a process comprising reacting A) a telechelic fluoroazido compound of formula N(Y)—(CH)—R—(CH)—(Y)N, wherein Y is SO, SO, CH, or CO, p=0 or 1, n and m are independently 1 to 4, and R is selected from the group consisting of i) a C-Cfluoroalkylene group, ii) a C-Cfluoroalkoxylene group, iii) a substituted aryl group, iv) an oligomer comprising copolymerized units of vinylidene fluoride and perfluoro(methyl vinyl ether), v) an oligomer comprising copolymerized units of vinylidene fluoride and hexafluoropropylene, vi) an oligomer comprising copolymerized units of tetrafluoroethylene and perfluoro(methyl vinyl ether), and vii) an oligomer comprising copolymerized units of tetrafluoroethylene and a hydrocarbon olefin with B) a telechelic diyne or dinitrile compound in the presence of copper halide catalyst.