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:
Jun. 07, 1994
Filed:
Dec. 04, 1992
Osamu Mitani, Chiba, JP;
Ichiro Murakami, Chiba, JP;
Dow Corning Toray Silicone Co., Ltd., Tokyo, JP;
Abstract
The instant invention pertains to viscous fluid coupling organopolysiloxane compositions comprised of (A) at least one organopolysiloxane fluid that has the general formula R.sup.1.sub.a R.sup.2.sub.b SiO.sub.[4-(a+b)]/2 wherein R.sup.1 is an alkyl group, R.sup.2 is an aryl group, a+b has the value of 1.95 to 2.05, and b/(a+b) has the value of 0.05 to 0.30; and (B) 0.01 to 5 weight parts by weight per 100 parts by weight of component (A) of a compound with the general formula ##STR1## wherein each R.sup.3 is independently selected from an alkyl group and C has the value of 0 to 2. The viscous fluid coupling organopolysiloxane compositions of the instant invention are capable of withstanding long-term use and under high-temperature, high-shear conditions with little increase or decrease in viscosity and almost no torque fluctuation.