Improvements in or relating to the production of organo-silicon compounds

Triorgano silicon fluorides are prepared by saturating a solution of an alkyl, alicyclic or alkaryl magnesium halide or a mixture thereof in ether with silicon tetrafluoride, the alkyl, alicyclic or alkaryl group containing at least eight carbon atoms. Grignard reagents that may be used are n-octyl, n-octadecyl, cyclohexyl, n-dodecyl and n-tetradecyl magnesium bromides. The alicyclic radical may be derived from a terpene. The Specification as open to inspection under Sect. 91 refers to the preparation of organosilicon fluorides by reacting silicon tetrafluoride with an alkyl, alicyclic or alkaryl magnesium halide. This subject-matter does not appear in the Specification as accepted.ALSO:Lubricating oil compositions comprise non-hydrocarbon glycol lubricants or hydrocarbon type lubricants and a triorganosilicon fluoride, wherein the organo groups may be the same or different and are alkyl, alicyclic or alkaryl groups containing at least eight carbon atoms.