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:
Feb. 21, 2012
Filed:
May. 19, 2009
Kenichi Fukuda, Gunma-ken, JP;
Mikio Shiono, Gunma-ken, JP;
Hirofumi Kishita, Gunma-ken, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
Perfluoropolyether compositions are provided comprising: (A) a linear perfluoropolyether compound containing at least two alkenyl groups, having a perfluoropolyether structure comprising recurring units —CFO— in its backbone, and having a molecular weight of 10,000 to 100,000; (B) an organosilicon compound containing at least two silicon atom-bonded hydrogen atoms; (C) a reinforcing filler; (D) a hydrosilylation catalyst; and (E) a polyfluoromonoalkenyl compound containing one alkenyl group and having a perfluoropolyether structure in its backbone. The compositions cure into rubber or gel products having improved acid resistance.