abstract |
FIELD: petrochemistry. SUBSTANCE: depressant for paraffin and high-paraffin crude oils and petroleum derivatives contains 1-50 wt % of ethylene-vinyl acetate copolymer with 24-32 wt % vinyl acetate units and molecular weight 10000-45000, 0.5-15 wt % of interaction product of 1 mol of fatty C 10 -C 18 - alcohols with 8-20 mol of ethylene oxide, and hydrocarbon solvent to 100%. EFFECT: increased depressant efficacy. 4 tbl |