FIELD: polymer production. SUBSTANCE: invention, in particular, relates to recirculation reactors for polymerization of alpha0olefins in presence of catalyst to yield product in the form of particles. Clogging in reactor is prevented by adding special agent, in particular composition including alpha- olefin/acrylonitrile copolymer and polyamine, which is prepared by polymerization of primary aliphatic mono- or diamine with epichlorohydrin or with copolymer of alpha-olefin with maleic anhydride. EFFECT: facilitated anticlogging operation. 5 cl, 1 dwg, 7 ex
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