| abstract |
The use as an ashless anti-wear additive in a non-aqueous lubricating composition and/or in a fuel composition, of at least one compound represented by the structural formula (I):wherein R 4 represents H or a C 1 to C 9 hydrocarbyl group or formula (II) x, y and z are independently integers in the range 1 to 6; and R 1 , R 2 and R 3 each independently represent H or a C 1 to C 10 hydrocarbyl group. Also, a non-aqueous lubricating composition and a fuel composition for an internal combustion engine which comprise at least one of said compounds represented by structural formula (I). |