Patent ID: 7932409
Filing Date: 2011-04-26
Classification: C07D,C08G

Abstract:
1. A process to purify epoxidized oil produced from a reaction between per-acid and unsaturated oil, comprising the steps of: (a) washing the epoxidized oil with salt water upon separating the epoxidized oil from an aqueous fraction of any spent acids; (b) neutralizing an acidic condition of the washed epoxidized oil with a base; and (c) removing any base residue by washing the neutralized epoxidized oil with the salt water until the pH of the neutralized epoxidized oil is 6.5 to 7.5 to acquire the purified epoxidized oil, wherein the concentration of the salt in the salt water is 4% to 30% to avoid emulsion forming in the washing step, wherein the salt is selected from the group consisting of potassium chloride, sodium chloride, lithium chloride, and combinations thereof.