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:
Sep. 24, 1985
Filed:
Aug. 15, 1983
Joseph B Finlay, Wilmington, DE (US);
Leo Ojakaar, Hockessin, DE (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A peroxide curable fluoroelastomer composition wherein the composition comprises a tetrapolymer whose interpolymerized units consist essentially of units derived from: (1) about 30-40 weight percent vinylidene fluoride, (2) about 30-40 weight percent of the fluorine-containing monomers hexafluoropropylene or pentafluoropropylene, (3) about 25-35 weight percent tetrafluoroethylene and (4) up to 3 mole percent of units, based upon the tetrapolymer, derived from a bromine-containing olefin, with the proviso that enough of such units are present to provide 0.05 weight percent bromine in the tetrapolymer, the units of the bromine-containing olefin are derived from a compound having the formula CX.sub.2 .dbd.CX(CY.sub.2).sub.n (CZ.sub.2).sub.2 Br where X is hydrogen or fluorine, Y is hydrogen, fluorine or chlorine, Z is fluorine or chlorine and n is 0-5 and said fluoroelastomer composition contains at least 1 part per hundred parts tetrapolymer of trimethallylisocyanurate.