Patent ID: 6844307

Claim:
A contaminant solubilizing composition comprising: (a) about 1 to about 90 weight percent, based on the weight of the contaminant solubilizing composition, of an ester acid composition consisting essentially of at least one C 1 to C 4 ester of lactic acid; (b) about 1 to about 30 weight percent, based on the weight of the contaminant solubilizing composition of at least one surfactant; (c) up to about 98 weight percent, based on the weight of the contaminant solubilizing composition, of at least one solvent selected from the group consisting of water, methanol, ethanol, and isopropanol; and at least one oil scavenger selected from the group consisting of phosphated ethoxylate blend, stearic acid diethanolamide, sulphated and sulphited natural oils, sulphated and sulphited synthetic oils, polyethylene emulsions, polyethylene glycol esters, ethoxylated lanolin derivatives, fatty acid alyolamides, and mixtures thereof.