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. 03, 2021
Filed:
Feb. 17, 2017
Applicant:
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Inventor:
Christopher J. Bish, Kennett Square, PA (US);
Assignee:
E.I. DEUPONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 27/18 (2006.01); C08K 3/04 (2006.01); C08K 5/00 (2006.01); C08K 5/25 (2006.01); C08K 5/14 (2006.01); C08K 3/013 (2018.01);
U.S. Cl.
CPC ...
C08L 27/18 (2013.01); C08K 3/04 (2013.01); C08K 5/0025 (2013.01); C08K 5/14 (2013.01); C08K 5/25 (2013.01); C08K 3/013 (2018.01); C08K 2201/005 (2013.01); C08K 2201/014 (2013.01);
Abstract
The present invention is directed to compounds comprising a perfluoroelastomer and a blend of two different particle size carbon blacks that, when cured with a curing agent, comprise a heterocyclic or perfluorinated crosslink. Such compounds comprise copolymerized units of unsaturated fluorinated olefins, a perfluoro(vinyl ether), and a cure site fluorinated monomer having a nitrile cure site, plus a blend of carbon blacks. Articles cured from these compounds exhibit improved sealing force.