Hydrocarbonoxy-containing silicone fluids useful as hydraulic fluids

Claim 1

A process for producing a novel silicone fluid polymer useful as a hydraulic fluid consisting essentially of (a) adding up to 3.5 moles of water per mole of a mixture of silanes having therein 75 to 95 mole percent of R 2 SiX 2 , 5 to 25 mole percent of RSiX 3 , and trace amounts of silanes selected from the class consisting of SiX 4 and R 3 SiX where there is added sufficient water to replace 50 to 85 mole percent of the X atoms present in the silanes, X is selected from halogen, R is selected from the class consisting of monovalent hydrocarbon radicals, halogenated monovalent hydrocarbon radicals and cyanoalkyl radicals and which reaction is carried out at a temperature of 9° to 20° C; (b) adding with agitation to the hydrolyzate up to 30 parts of a water-immiscible organic solvent to form a solution; (c) heating the resulting solution to 25°- 100° C; (d) agitating into the solution 0.15 to 3.0 moles of an alcohol selected from the class consisting of ROH, ROR' OH, and ROR'OR'OH, and R(OC x H 2x ) n --OH, where R is as previously defined, R' is selected from divalent hydrocarbon radicals and halogenated divalent hydrocarbon radicals, x varies from 2 to 4 and n varies from 4 to 100; (e) heating and resulting mixture to the reflux temperature of the solvent to strip off all solvent, cyclic siloxanes and free alcohol; and (f) cooling the resulting silicone polymer fluid to room temperature.