TY JOUR TI POLYMERIC SURFACE-ACTIVE SUBSTANCE FOR OIL PRODUCING INDUSTRY KW surfactants KW xylene-formaldehyde resin KW 4-aminoantipyrine KW technological characteristics JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Klyuchnikova, N.V. AU Genov, I.. AU Kudina, A.E. PY 2018 IS 3 PB Belgorod State Technological University named after V.G. Shukhov