CONCENTRADO DE OLEO LUBRIFICANTE DE CARBONATO AROMATICO,DE BAIXA VISCOSIDADE E PROCESSO PARA FORMAR UM CONCENTRADO DE OLEO LUBRIFICANTE DE CARBONATO AROMATICO,DE BAIXA VISCOSIDADE

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 R is C1 to C20 substituted or unsubstituted hydrocarbyl, Ar is C6 to C20 aromatic group, and Z is a member selected from the group consisting of -(O)COR , -N(R )-T ,-X-T , and -D -T wherein R is H or C1 to C20 hydrocarbyl, R is H or C1 to C6 hydrocarbyl, T is substituted or unsubstituted aryl, X is O or S, T is a group of the formula: wherein Ar min is C6 to C20 aromatic group, Z is divalent C1 to C10 alkylene or C3 to C10 cycloalkylene, R is C1 to C20 substituted or unsubstituted hydrocarbyl, c min is 0 or 1, d is an integer of at least 1, and f min and b min are each integers of from 0 to 3, with the proviso that the sum of f min and b min does not exceed the unsatisfied valences of Ar min , D is a C1 to C10 hydrocarbon linking group and T 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 0 to 3, with the proviso that the sum of f, b and c does not exceed the unsatisfied valences of Ar.