| abstract |
The invention belongs to the technical field of olefin polymerization catalysts, and discloses a catalyst for olefin polymerization and an olefin polymerization method. The catalyst comprises the reaction product of the following components: 1) a solid catalyst component comprising titanium, magnesium, halogen and an internal electron donor compound; 2) an alkyl aluminum compound; 3) an external electron donor compound selected from formula (I) At least one of the cyclosiloxane compounds represented by ): in formula (I), R 1 and R 2 are the same or different, and are each selected from hydrogen, C 1 -C 20 straight-chain alkyl, C 3 -C 20 branched alkyl group, C2 - C20 straight-chain double bond-containing alkene group, C3 - C20 branched double bond-containing alkene group, C3 - C10 cycloalkyl group, C6 -C6- C 20 aryl group, C 7 -C 20 alkaryl group or aralkyl group; n is an integer of 2-100. The catalyst has high polymerization activity, high hydrogen modulation sensitivity, slow activity decay, and adjustable polymer isotactic index and melt index. |