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, 2002
Filed:
Jan. 05, 2001
Makoto Sato, Usui-gun, JP;
Takashi Matsuda, Usui-gun, JP;
Shinichi Sato, Usui-gun, JP;
Masatoshi Arai, Usui-gun, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
A curable fluoropolyether base rubber composition contains (A) 100 parts by weight of a linear fluoropolyether compound having at least two alkenyl groups in a molecule and a perfluoroalkyl ether structure in its backbone, (B) 10-40 parts by weight of a silica filler having a specific surface area of at least 50 m /g, (C) 5-35 parts by weight of diatomaceous earth, (D) an organosilicon compound having at least two Si—H groups, and (E) a hydrosilylation catalyst. The inclusion of diatomaceous earth is effective for preventing the composition from outgassing and from changing its curing behavior with time.