Patent ID: 7964611

Claim:
An alkaline earth metal borated alkyltoluene sulfonate prepared by the process comprising: (a) reacting (i) at least one of an oil soluble alkyltoluene sulfonic acid, an alkaline earth metal alkyltoluene sulfonate salt, or mixtures thereof; (ii) at least one source of alkaline earth metal; (iii) at least one source of boron, in the presence of a mixture comprising: (1) at least one hydrocarbon solvent; (2) at least one low molecular weight alcohol; and (iv) from 0 to less than 10 mole percent, relative to the source of boron, of an overbasing acid, other than the source of boron; and (b) heating the reaction product of (a) to a temperature above the distillation temperatures of the hydrocarbon solvent and the low molecular weight alcohol to distill the hydrocarbon solvent, the alcohol and the water generated from the reaction, wherein no additional water is added in the process.