Patent GB-645339-A (GB)
Title: Lubricants comprising organo-silicon compounds
IPC: C08G77/06
Filed: 1946-11-22
Abstract: A lubricating composition comprises a lubricating oil, viz any non-hydrolysing and non-oxidizing animal, mineral or vegetable oil and a minor proportion of a non-hydrolysable liquid product obtained by the hydrolysis of an organic silicon compound of general formula RySiMz, where R is a saturated or unsaturated organic hydrocarbon radical, M is a halogen atom or -OR1 group, y is 1 or 2, z is 2 or 3, y plus z does not exceed 4, any remaining silicon valencies being satisfied by hydrogen.  The silicon compound may be a dialkyl-dialkoxy; dialkyl - dihalo -; trihalo - alkyl -; trialkoxy - alkyl-; or halo-alkoxy-dialkyl-; silicane.  In examples: (1) mono-n-amyl trimethoxy silicane was hydrolysed by heating with water, the oily silicon polymer remaining after distillation of volatiles being mixed with motor oil in the respective proportions of 5 and 95; (2) 8 parts of the polymer obtained by hydrolysing a diamyl dialkoxy silicane is added to 92 parts of "Gulf" oil.  The Specification as open to inspection under Sect. 91 comprises also the admixture with silicane hydrolysis products of non-lubricating liquids, such as various specified aliphatic and aromatic hydrocarbons, halogenated and nitrated hydrocarbons, aliphatic alcohols, ethers, esters and ketones, and aromatic hydroxy compounds.  Examples are given of hydraulic fluids: (1) phenyl-amyl methyl fluorosilicane; (2) tributyl silicol; (3) triethyl silicon oxide and hydrocarbon lubricant; (4) triamyl fluorosilicane; (5) tributyl silicon hydride; (6) tributyl fluoro silicane; (7) monofluoroamyl diamyl fluorosilicane; (11) tetrabutyl silicane; and of lubricants: (8) the hydrolysis product of diamyl dichlorosilicane and methyl amyl ketone; (9) the hydrolysis product of monoamyl-trimethoxysilicane and isobutyl alcohol; (10) the hydrolysis product of diethyl- or dimethyl-dichlorosilicane.  This subject-matter does not appear in the Specification as accepted.ALSO:A lubricating composition comprises a lubricating oil, viz any non-hydrolysing and non-oxidizing animal, mineral or vegetable oil and a minor proportion of a non-hydrolysable liquid product obtained by the hydrolysis of an organic silicon compound of general formula RySiMz, where R is a saturated or unsaturated organic hydrocarbon radical, M is a halogen atom or-OR1 group, y is 1 or 2, z is 2 or 3, y plus z does not exceed 4, any remaining silicon valences being satisfied by hydrogen.  The silicon compound may be a dialkyl-dialkoxy-; dialkyl-dihalo-; trihalo-alkyl-; trialkoxy-alkyl-; or halo-alkoxy-dialkylsilicane.  In examples: (1) mono-n-amyl trimethoxy silicane was hydrolysed by heating with water, the oily silicon polymer remaining after distillation of volatiles being mixed with motor oil in the respective proportions of 5 and 95; (2) 8 parts of the polymer obtained by hydrolysing a diamyl dialkoxy silicane is added to 92 parts of "Gulf" oil.  The Specification as open to inspection under Sect. 91 comprises also the admixture with silicane hydrolysis products of non-lubricating liquids, such as various specified aliphatic and aromatic hydrocarbons, halogenated and nitrated hydrocarbons, aliphatic alcohols, ethers, esters and ketones, and aromatic hydroxy compounds.  Examples are given of hydraulic fluids: (1) phenyl-amyl methyl fluorosilicane; (2) tributyl silicol; (3) triethyl silicon oxide and hydrocarbon lubricant; (4) triamyl fluorosilicane; (5) tributyl silicon hydride; (6) tributyl fluorosilicane; (7) monofluoroamyl diamyl fluorosilicane; (11) tetrabutyl silicane; and of lubricants (8) the hydrolysis product of diamyldichlorosilicane and methyl amyl ketone; (9) the hydrolysis product of monoamyl trimethoxysilicane and isobutyl alcohol; (10) the hydrolysis product of diethyl- or dimethyl-dichlorosilicane.  This subject-matter does not appear in the Specification as accepted.