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. 01, 2014
Filed:
Mar. 15, 2012
Christopher J Bish, Kennett Square, PA (US);
Peter a Morken, Wilmington, DE (US);
Robert Clayton Wheland, Wilmington, DE (US);
Christopher J Bish, Kennett Square, PA (US);
Peter A Morken, Wilmington, DE (US);
Robert Clayton Wheland, Wilmington, DE (US);
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Fluoroelastomer compositions comprising fluoroelastomers having copolymerized units of a nitrile-containing cure site monomer are cured with certain hydrazide curatives. The hydrazide is of the general formula R(C(O))NHNHR, wherein n is 1 or 2; Ris NH, NHNH, NHR, NR, NHNHC(O)NH, NHNHC(O)NHNH, NHNHR, or NHC(O)NHNH; Ris H, alkyl, aryl, heterocycle, COR, C(O)R, CHR, or C(O)R; Ris alkyl, aryl, heterocycle, or CHR; and Ris a fluoroalkyl group.