COMPOUND FOR REMOVAL AND PREVENTION OF ASPHALTENERESINPARAFFIN DEPOSITS Russian patent published in 1994 - IPC

FIELD: removers. SUBSTANCE: compound contains, % by weight, 20-78 hexane fraction, heavy petroleum 18-78, solvent, diproxamine 157-65M - a product prepared by successive adding 4 wt. parts wt of propylene oxide, 28 wt. parts wt of ethylene oxide and 60 wt. parts wt of propylene oxide to 1 pt wt of ethylenediamine (2-4% ). EFFECT: higher dissolving capacity at any relation of resins, paraffins and asphaltenes with simultaneous prevention of redeposition of asphalteneresinparaffin deposits after their primary dissolution for any grades of oil.