FIELD: chemistry.
SUBSTANCE: invention relates to demulsifier compositions (versions) containing: (a) an anionic surfactant selected from a group consisting of alkylsulphosuccinates, alkyl phosphate esters, alkylphosphonic acids, salts thereof, and combinations thereof; and/or (b) a nonionic surfactant selected from a group consisting of ethylene oxide and propylene oxide copolymers, ethoxylated fatty acid esters and polyethylene glycol, terpene alkoxylates, alcohol ethoxylates, modified alkanolamides, and combinations thereof; and (c) a solvent base composition containing a mixture of dibasic esters. The present invention also relates to methods of breaking oil and water emulsions (versions).
EFFECT: obtaining solvent bases for use in demulsifier compositions, which have less toxicity and are environmentally safer.
40 cl, 6 tbl, 2 dwg
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