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 PB Belgorod State Technological University named after V.G. Shukhov