FIELD: chemical or physical processes.
SUBSTANCE: invention relates to gas-phase polymerisation methods in which certain condensing reagents are used. Described is a gas phase polymerisation method, involving reacting one or more monomers, at least one catalyst system and an inert condensable reagent under polymerisation conditions to produce a polyolefin. Inert condensing reagent contains mixture of 2,2-dimethylpropane and at least one other condensing reagent C4-C8.
EFFECT: technical result is higher efficiency when forming products during method due to additional improvement of heat removal due to evaporation of condensation reaction products.
11 cl, 3 dwg, 6 tbl, 6 ex
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