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:
May. 25, 2021
Filed:
Sep. 16, 2016
Solvay Specialty Polymers Italy S.p.a., Bollate, IT;
SOLVAY SPECIALTY POLYMERS ITALY S.P.A., Bollate, IT;
Abstract
The invention pertains to a fluoroelastomer composition comprising: (a) a vinylidene fluoride-based fluoroelastomer [fluoroelastomer (A)] comprising recurring units derived from vinylidene fluoride (VDF) and recurring units derived from at least one additional (per)fluorinated monomer; said fluoroelastomer (A): —possessing a polydispersity index (IMWD) of between 1.5 and 3.5, —comprising an amount of polar end groups of formula —CFCHOH of at least 3 mmol/kg and at most 6 mmol/kg, and —further comprising end of chain groups of formula —CFH, —CFCH, and, optionally, —OC(o)—R(with Rbeing a C-Calkyl group) in an amount such to satisfy the following inequality: [—CFCHOH]+[—CFH]+[—CFCHH—OC(o)R]≤30+(2×10)/M, (b) at least one polyhydroxylated curing agent; (c) at least one accelerant; (d) at least one metal oxide selected from the group consisting of divalent metal oxides; and (e) optionally, at least one metal hydroxide, wherein the amount of said metal hydroxide, if present, is below 3 phr, based on 100 weight parts of fluoroelastomer (A).