Organopolysiloxane composition for viscous fluid couplings.

摘要

The instant invention pertains to organopolysiloxane compositions for viscous fluid couplings, comprised of (A) an organopolysiloxane liquid having the general formula R<1>aR<2>bSiO[4-(a+b)]/2, wherein R<1> represents an alkyl group, R<2> represents an aryl group, a + b = 1.95 to 2.05 and b/(a + b) = 0.05 to 0.30; and (B) a compound having by the general formula: <CHEM> wherein each R<3> may be independently selected from the same or different alkyl group. The organopolysiloxane composition for viscous fluid couplings of the instant invention can withstand use of long periods of time with no increase or decrease in viscosity under high-temperature and high-shear conditions and with almost no torque variation.