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:
Dec. 22, 1987
Filed:
Feb. 25, 1986
Takatsugu Hashimoto, Higashiyamato, JP;
Akihiro Maehara, Musashimurayama, JP;
Seisuke Tomita, Tokorozawa, JP;
Yuichi Funahashi, Ota, JP;
Junichiro Watanabe, Ota, JP;
Kazuo Sugiura, Tokyo, JP;
Hironori Matsumoto, Tokyo, JP;
Bridgestone Corp., Tokyo, JP;
Toshiba Silicone Co., Ltd., Tokyo, JP;
Japan Synthetic Rubber Co., Ltd., Tokyo, JP;
Abstract
Rubber compounds comprising a specific type of polyorganosiloxane of the following formula ##STR1## in which R and R' independently represent a hydrocarbon substituent and n is an integer of not smaller than 3 provided that at least 6 mole % of the substituents R and R' consists of a hydrocarbon group having Small's molecular attraction constant not smaller than 350. Carbon black is added to the polyorganosiloxane whereby various physical properties are improved including breaking strength, water and hot water resistances. The rubber compound may further comprise at least one organic rubber other than the above polyorganosiloxane.