DEMULSIFIER FOR WATER-IN-OIL EMULSIONS, AND METHOD OF USE

摘要

A water-in-oil demulsifier is prepared by (a) reacting a high molecular weight polyalkylene glycol (PAG) with ethylene oxide (EO) to form a PAG/EO adduct, (b) reacting esterification of the PAG/EO adduct with a diacid anhydride to form a diester, (c) reacting the diester with a vinyl monomer, and (d) additional esterification of the step (c) product with a polyhedric material.