Patent ID: 8414764
Filing Date: 2013-04-09
Classification: C10G

Abstract:
1. A water-based separating composition for separating hydrocarbons from hydrocarbon-containing material, said separating composition comprising: at least about 71% by weight water; a hydrotropic agent comprising an aromatic phosphate ester having the formula: a wetting agent comprising 2,5,8,11-tetramethyl-6-dodecyn-5,8-diol ethoxylate; a dispersant having flocculating characteristics comprising one or more of sodium acid pyrophosphate and tetrapotassium pyrophosphate; and at least one acid and at least one base, in amounts sufficient to provide the separating composition with a pH of about 7 to about 8.5; wherein the hydrotropic agent and the dispersant having flocculating characteristics are different.