Abstract:
MIXTURES OF DIHALOGENOETHYL-SUBSTITUTED ORGANOSILICON COMPOSITIONS HAVE BEEN PREPARED BY ADDING EITHER IBR OR IC1 TO VINYL-SUBSTITUTED SILANCES AND SIOLXANES. LUBRICATIING COMPOSITIONS OF EXTREME PRESSURE AND HIGH TEMPERATURE CHARACTERISTICS ARE PREPARED BY ADDING THE MXTURES TO OILS OF LUBRICATING VISCOITY. THE LUBRICATING COMPOSITIONS ARE ESPECIALLY USEFUL FOR LUBRICATING HIGH TEMPERATURE ALLOYS.
Abstract:
MIXTURES OF DIHALOGENOETHYL-SUBSTITUTED ORGANOSILICON COMPOSITIONS HAVE BEEN PREPARED BY ADDING EITHER IBR OR ICI TO VINYL-SUBSTITUTED SILANES AND SILOXANES. LUBRICATING COMPOSITIONS OF EXTREME PRESSURE AND HIGH TEMPERATURE CHARACTERISTICS ARE PREPARED BY ADDING THE MIXTURES TO OILS OF LUBRICATING VISCOSITY. THE LUBRICATING COMPOSITIONS ARE ESPECIALLY USEFUL FOR LUBRICATING HIGH TEMPERATURE ALLOYS.
Abstract:
Compositions substituted with iodine, with either bromine or chlorine, and with either alkoxy, acyloxy, or hydroxy groups are prepared by adding a mixture of iodine and either bromine or chlorine or IBr or ICl to alpha-olefins in the presence of alcohols, carboxylic acids, or water. Lubricating compositions useful for lubricating high temperature alloys are prepared by adding such compounds to oils of lubricating viscosity.
Abstract:
ORGANOPOLYSILOXANES USEFUL AS HYDRAULIC FLUIDS COMPRISE ORGANOPOLYSILOXANES IN WHICH A MAJORITY OF THE SILOXANE GROUPS CONTAIN METHYL RADICALS AND HIGHER ALKYL RADICALS, AND A MINOR PROPORTION OF THE SILOXANE GROUPS CONTAIN SILICON-BONDED TERTIARY BUTYL-SUBSTITUTED HYDROXYARYL RADICALS ATTACHED TO SILICON THROUGH A DIVALENT PROPYLENE RADICAL. OPTIONALLY, A MINOR AMOUNT OF ARYL AND ARALKYL RADICALS CAN ALSO BE PRESENT ON THE SILOXANE GROUPS. THESE COMPOUNDS ARE PREPARED BY REACTING POLYSILOXANES CONTAINING METHYLHYDROGEN UNITS AND PHENYLHYDROGEN UNITS WITH HIGHER ALKENES AND HYDROXYARYL COMPOUNDS CONTAINING BOTH NUCLEAR SUBSTITUTED ALLYL RADICALS AND NUCLEAR SUBSTITUTED TERTIARY BUTYL RADICALS.
Abstract:
Lubricating compositions useful for lubricating high-temperature alloys are prepared by adding organosilicon compounds containing silicon-bonded ethyl groups substituted with iodine, with bromine or chlorine, and with alkoxy, acyloxy or hydroxy groups to oils of lubricating viscosity. The organosilicon compounds are prepared by adding I2 and Br2, I2 and Cl2, IBr, or ICl to vinylsubstituted silanes and siloxanes in the presence of alcohols or carboxylic acids or with subsequent water treatment.
Abstract:
ORGANOSILICON COMPOUNDS CONTAINING SILICON-BONDED ETHYL GROUPS SUBSTITUTED WITH IODINE, WITH BROMINE OR CHLORINE, AND WITH ALKOXY, ACYLOXY, OR HYDROXY GROUPS HAVE BEEN PREPARED BY ADDING I2 AND BR2, I2 AND CL2, IBR, OR ICI TO VINYL-SUBSTITUTED SILANES AND SILOXANES IN THE PRESENCE OF ALCOHOLS OR CARBOXYLIC ACIDS OR WITH SUBSEQUENT WATER TREATMENT. LUBRICATING COMPOSITIONS USEFUL FOR LUBRICATING HIGH TEMPERATURE ALLOYS ARE PREPARED BY ADDING SUCH SUBSTITUTED ORGANOSILICON COMPOUNDS TO OILS OF LUBRICATING VISCOSITY.
Abstract:
1,205,222. Organopolysiloxanes. GENERAL ELECTRIC CO. 28 Nov., 1967 [12 Dec., 1966], No. 54185/67. Heading C3T. [Also in Division C5] An organopolysiloxane or a mixture of organopolysiloxanes useful as lubricants have the formula or average general formula in which R is a higher alkyl radical (i.e. at least 8 carbon atoms), R 1 is a t-butyl-substituted hydroxyaryl radical; a + b = 5-40 and the ratio b to a + b = 0.005-0.05. R 1 may be selected from radicals: A composition may comprise a mixture of an organopolysiloxane: and a second organopolysiloxane of formula in which a = 5-40, c = 0-39, d = 1-40 and c+d=1-40. A composition in accordance with Formula I may also comprise a mixture of an organopolysiloxane of formula (B) (a= 5-10) and a cyclic polymer of formula in which e = 3 to 7. In a preferred polymer R is tetradecyl and R 1 has the formula of Formula II above. The organopolysiloxane(s) are liquids but may be compounded with a thickener, e.g. silica, to form a silicone grease. The polyorganosiloxanes may, for example, be prepared from a phenolic compound having t-butyl radicals in both meta-positions to the OH group by first replacing one of the t-butyl radicals with an allyl radical to give a compound R 1 CH 2 -CH = CH 2 (R 1 as previously defined) and reacting this compound with an organopolysiloxane containing Si-H linkages.