TY JOUR TI ISOLATION OF DIVINYL FROM THE BUTENE-DIVINYL FRACTION (BDF) OF THE PRODUCTS OF THE PYROLYSIS OF HYDROCARBON FEEDSTOCK KW divinyl KW rectification KW separating agent JO Bulletin of the Angarsk State Technical University AU Ul'yanov, B.A. AU Semenov, I.A. AU Nemcov, A.S. PY 2022 IS 1 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»