METHOD FOR GAS-PHASE POLYMERIZATION OF ALPHA-OLEFIN

摘要

PURPOSE: A gas-phase polymerization method of alpha-olefins is provided to prepare polyolefin with high productivity and to efficiently remove reaction heat by increasing contact time. CONSTITUTION: A gas-phase polymerization method of alpha-olefins comprises the steps of: producing a polyolefin prepolymer by prepolymerizing a catalyst, liquid isobutene, and at least one alpha-olefin; supplying the mixture of the catalyst and polyolefin prepolymer, and a cycling gas including at least one alpha-olefin and inert gas to a second reactor(200); polymerizing prepolymer and alpha-olefin with polyolefin; and discharging a polyolefin polymer from a reactor.