Patent ID: 7981979

Claim:
A composition comprising one or more siloxane cross-linked demulsifiers, wherein said siloxane cross-linked demulsifiers are prepared by reacting one or more alkylphenol-formaldehyde resin alkoxylates that is the reaction product of one or more alkylphenol-formaldehyde resins and 20 to about 500 molar equivalents of one or more alkylene oxides, one or more polyalkylene glycols, or a mixture thereof, with about 0.01 to about 0.5 molar equivalents of one or more silicon-based cross-linkers selected from compounds of formula: Si(OCH 2 CH 3 ) 4 , Si(OCH 3 ) 4 , and (CH 3 CH 2 O) 3 Si—(CH 2 ) 3 —NH—(CH 2 ) 3 —Si(OCH 2 CH 3 ) 3 .