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:
Apr. 04, 2017
Filed:
Nov. 24, 2014
E. I. Du Pont DE Nemours and Company, Wilmington, DE (US);
Ming-Hong Hung, Wilmington, DE (US);
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Abstract
Compositions comprising fluoroelastomers having copolymerized units of a cyano-containing cure site monomer are cured (i.e. crosslinked) with a fluoropolymer having pendant sulfonyl azide groups. The latter fluoropolymer comprises copolymerized units of a fluoroalkanesulfonyl azide of formula CF═CF—(O)—R—(CH)—SON, wherein p=0 or 1; n=0-4; and Ris a C-Cperfluoroalkyl or perfluoroalkoxy group. The crosslinks are tetrazole rings formed by the reaction of the pendant sulfonyl azide groups on the fluoropolymer with pendant cyano groups on the fluoroelastomer.