METHOD OF POLYMERIZING OLEFINS

摘要

A method for polymerizing olefins is provided to improve productivity even with using inexpesive catalyst and to reduce the density of a polymer while using a small amount of alpha-olefin comonomer and to the density of a polymer. A polymerization method of olefin comprises a step for gas-polymerizing at least olefins in the presence of an olefin polymerization catalyst. The catalyst is injected at the position of 1/2 times and 4 times of the diameter(D) of gas phase polymerization(31). The olefin polymerization catalyst comprises an organometallic compound represented by chemical formula 1: M^1R^1_lR^2_mR^3_n or R^2_mR^3_nM^1R^1_l-Q-R^1_lM^1R^2_mR^3_; aluminoxane; and an organometallic compound represented by chemical formula 2: M^2R^4_pX_q.