FIELD: chemistry.
SUBSTANCE: invention relates to a gas-phase polymerisation method for producing polyolefins. Described is a method which includes reacting monomers, a catalyst system and an inert condensable reagent under polymerisation conditions to produce a polyolefin. Inert condensing reagent includes at least 25 mol. % of isobutane and at least 25 mol. % of propane.
EFFECT: technical result is increase in productivity and reduction of ΔTP (thaw point) at relatively low pressure in reactor.
19 cl, 4 tbl, 16 ex
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