AUTOMATIC TRANSMISSION FLUIDS CONTAINING ESTERS OF HYDROCARBYL SUCCINIC ACID OR ANHYDRIDE WITH THIO-BIS- ALKANOLS AND METAL SALTS THEREOF

摘要

- 16 -ABSTRACT OF THE DISCLOSUREAutomatic transmission fluids containing themono- and di- esters of C12-C50 aliphatic hydrocarbon-substituted succinic acids or anhydrides, such as octa-decenyl succinic anhydride, with thio-bis-alkanols, suchas dithiodiethanol or thiodiethanol, as friction modifiersand corrosion inhibitors. Compositions containing thezinc or nickel salts of said esters are also useful asanti-oxidants in ATF.