M.Yu. Dolomatov - Dr.Sc. (Chem.), Professor, Bashkir State University, Physico-Technical Institute, Ufa E. A. Kovaleva - Ph.D. (Chem.), Associate Professor, Ufa State Petroleum Technological University E-mail: kovaleva-ugntu@yandex.ru N.Kh. Paymurzina - Post-graduate Student, Ufa State Petroleum Technological University