| http://www.w3.org/ns/prov#value | - ic groups, and the substituent groups are derived from polyalkene characterized as having an Mn value of at least about 700, and (C) a minor, effective amount of at least one demulsifier characterized by the formula wherein R is an alkyl or alkenyl group containing from about 5 to about 30 carbon atoms, and R1 is hydrogen or a hydrocarbyl group containing from 1 to about 8 carbon atoms.
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