Salts of mercaptocarboxylic acid derivatives and their use...

Details Salts of mercaptocarboxylic acid derivatives and their use... Salts of mercaptocarboxylic acid derivatives and their use...

C - Chemistry, Metallurgy

07

C

C07C 323/50 (2006.01) C07D 211/54 (2006.01) C07D 213/70 (2006.01) C07D 307/18 (2006.01) C07D 307/64 (2006.01) C07D 333/34 (2006.01) C10M 135/26 (2006.01) F02B 1/04 (2006.01)

Patent

CA 2096896

T 5373 FF ABSTRACT SALTS OF MERCAPTOCARBOXYLIC ACID DERIVATIVES AND THEIR USE AS DETERGENT ADDITIVES The invention provides calcium and magnesium salts of a mercaptocarboxylic acid derivative of the general formula: R - S - (CR1R2) - COOH (I) in which n is 1 to 10; R represents an alkyl group, optionally substituted by a cycloalkyl, heterocyclyl or aryl group; or a cycloalkyl group optionally substituted by an alkyl group; and R1 and R2 are independently selected from hydrogen atoms, and hydroxyl, carboxyl, alkyl, alkoxy, alkylthio, cycloalkyl, aralkyl and aryl groups; subject to the total number of carbon atoms in the derivative being in the range from 12 to 50; a process for preparing the salts; and lubricating oil compositions and concentrates containing the salts. PS28/T5373FF

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