| abstract |
Adducts of formula (I) have been found to be additives for functional fluids. These additives are effective extreme pressure agents and antiwear agents as well as antioxidants for use in such functional fluids as lubricating oils including automatic transmission fluids and hydraulic fluids. Wherein R is, independently, alkyl or aryl and X and Y are the same or different and are hydrogen, carboxy, hydrocarbyl carboxy, cyano, aldehyde, hydrocarbyl keto, N-substituted carboxamide, thio- or dithiocarbamate, thioamide, thioacid or ester, a hydrocarbyl phosphorus containing radical, together are dicarboxylic anhydride or imide or N-hydrocarbyl substituted imide. Some of these adducts are considered to be new. |