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