Patent ID: 7252779

Claim:
A composition comprising reaction products from a reaction of a ricinoleic acid with propyl alcohol in the presence of a phosphorus-containing acid, the reaction products including a propyl ester of ricinoleic acid formed through transesterification and a phosphorus-containing compound, the reaction products exhibiting solubility with refrigerant hydrocarbons to fuel solvents, the composition further comprising a miscibility-enhancement additive effective to increase miscibility with naphthenes, paraffins, alkyl benzenes, mineral oils, polyol esters, polyalphaolefins, polyalkylene glycols, polybutenes, polyvinyl ethers or substituted hydrocarbons, wherein the miscibility-enhancement additive is selected from the group consisting of C10 to C18 long chain alcohols, esters, quaternary ammonium salts and alkyl benzenes.