DEMULSIFIER Russian patent published in 1995 - IPC

FIELD: producing demulsifiers. SUBSTANCE: proposed demulsifier contains reagent on the base of methanol solution of block-copolymer of ethylene and propylene oxides and oxypropylated and oxyethylated alcohol (R-4B) and inhibitor of corrosion (C-1033). Said inhibitor is prepared on the base of solution of N-alkylC₁₀-C₁₂-2-methyl-5-ethylpiridinium bromide in isopropyl or in isobutyl alcohol. Ratio of mentioned above ingredients (mass %) is as follows: R-4B 50-90, C-1003 20-50. Using proposed demulsifier it is enable to produce petroleum having 0.1 mass % of residual water. EFFECT: increases demulsification activity. 6 tbl