Patent ID: 7504438

Claim:
A demulsifier composition comprising oligo- and polymeric compounds, wherein the oligo- and polymeric compounds are prepared by 1) reaction of a) an amine having only two reactive amino hydrogens, b) an aliphatic or cycloaliphatic epoxidized olefin having two epoxide groups, and c) a second amine monomer having only two reactive amino hydrogens and a tertiary amine group; 2) optional subsequent reaction of epoxy groups of the oligo- and polymeric reaction products with d) an amine capping monomer having one or two reactive amino hydrogens; and 3) subsequent reaction of amine groups of the oligo- and polymeric reaction products with an N-alkylating agent selected from epichlorohydrin or epibromohydrin reacted polyalkoxide compounds which comprise an oxyalkylene group selected from polyethoxy groups and polypropoxy groups in a propoxy to ethoxy ratio of from about 9 to 1 to about 1 to 9 and methoxy-capped polyethylene oxide.