| 摘要 |
According to the present invention, a process is provided for forming a lubricating oil concentrate containing aromatic carbonate which comprises admixing lubricating oil, aromatic carbonate and at least one aromatic carbonate solubilizing co-additive of the formula: wherein R1 is Cl to C20 substituted or unsubstituted hydrocarbyl, Ar is C6 to C20 aromatic group, and Z1 is a member selected from the group consisting of -(O)COR2, -N(R3)-T2, -X-Tl, and -Dl-T3 wherein R2 is H or Cl to C20 hydrocarbyl, R3 is H or C1 to C6 hydrocarbyl, T2 is substituted or unsubstituted aryl, X is O or S, Tl is a group of the formula: wherein Ar' is C6 to C20 aromatic group, Z2 is divalant C1 to C10 a1ky1ene or C3 to C10 cycloalkylene, R4 is C1 to C20 substituted or unsubstituted hydrocarbyl, C' is O or 1, d is an integer of at least t 1, and f ' and b' are each integers of from O to 3, with the proviso that the sum of f' and b' does not exceed the unsatisfied valences of Ar', Dl is a Cl to C10 hydrocarbon 1inking group and T3 is an alkylene polyamine group, optionally substituted by one or more hydroxy-(optionally hydrocarbyl-substituted) aromatic groups, wherein f, b and c are each integers of from O to 3, with the proviso that the sum of f, b and c does not exceed the unsatisfied valences of Ar.
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