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SYNTHETIC AIRCRAFT TURBINE OIL
申请号	GB5027873	申请日	1973-10-29	公开(公告)号	GB1402697A	公开(公告)日	1975-08-13
申请人	TEXACO DEVELOPMENT CORP;			发明人
摘要	1402697 Lubricants TEXACO DEVELOPMENT CORP 29 Oct 1973 [14 Dec 1972] 50278/73 Heading C5F A lubricant suitable for gas-turbine engines in aircraft comprises the combination of three specified additives with a specified base oil. The base oil is the ester of pentaerythritol, a polypentaerythritol or trimethylolpropane and an organic monocarboxylic acid having from 2 to 18 carbon atoms in the molecule. The first additive is a thiocyanate of Formula I where R is a hydrocarbyl or amine-substituted hydrocarbyl group having from 1 to 30 carbon atoms or a radical of Formula II where R 1111 is a bridging polymethylene radical having from 2 to 4 carbon atoms, and R1, R 11 and R 111 are hydrogen or hydrocarbyl having from 1 to 30 carbon atoms. The second additive is of Formula III where one, two or all of X, Y and Z is hydroxyl and the other or others, if any, are hydrogen. The third additive is a triazole of Formula IV where R is hydrogen or alkyl having from 1 to 3 carbon atoms. Other additives may also be present; those referred to are arylamines of Formulµ V and VI where R is an alkyl or alkaryl radical having from 4 to 12 carbon atoms and trihydrocarbyl orthophosphates in which the hydrocarbyl radical has from 2 to 12 carbon atoms. The Specification includes lists of suitable components. Polyhydroxyanthraquinones not of Formula III are not suitable. The base oil used in the examples is made from a technical grade pentaerythritol containing a minor amount of dipentaerythritol and a mixture comprising valeric, 2-methyl-pentanoic, n-octanoic and pelargonic acids.
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