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. 27, 2024
Filed:
Nov. 11, 2019
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Ryuto Hayashi, Annaka, JP;
Kenichi Fukuda, Annaka, JP;
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 65/00 (2006.01); C08G 65/333 (2006.01); C08G 73/08 (2006.01);
U.S. Cl.
CPC ...
C08G 65/007 (2013.01); C08G 65/333 (2013.01); C08G 73/08 (2013.01); C08G 2650/48 (2013.01);
Abstract
A perfluoropolyether-based rubber composition which gives cured objects excellent in terms of heat resistance, low-temperature resistance, organic-solvent resistance, and acid resistance, the rubber composition being characterized by comprising (a) a linear perfluoropolyether compound having a number-average molecular weight of 1,000-100,000 and including at least two azido groups in the molecule and a divalent perfluoroalkyl ether structure in the main chain and (b) a linear perfluoropolyether compound having at least three ethynyl groups in the molecule.