FIELD: chemistry.
SUBSTANCE: invention relates to method of olefin polymerisation, which includes contact in gas-phase reactor system under conditions of polymerisation to obtain polymer product: i) metallocene-based catalytic system, including applied catalyst with constrained geometry, with applied metallocene catalyst with constrained geometry including borate anion, ii) at least, one monomer; and additive, including mixture of aluminium distearate and ethoxylated amine, with additive being added into reactor system separately from catalytic system, and content of additive in reactor system constitutes from 5 to 20 pp by weight (ppm(wt)) counted for productivity by polymer product. Invention also relates to metallocene-based catalytic system.
EFFECT: improvement of reactor operability.
5 cl, 1 tbl, 2 dwg, 2 ex
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