CATALYST COMPONENT FOR OLEFIN POLYMERIZATION AND CATALYST COMPRISING THE SAME

摘要

A catalyst component for olefin polymerization is disclosed, which comprises a reaction product of the following components: (1) spheric carrier; (2) titanium compound; and optionally, (3) electron donor, wherein the spheric carrier comprises a reaction product of at least the following components: (a) magnesium halide as shown in general formula MgX2-nRn, wherein X independently is chlorine or bromine, R is C1-C14 alkyl, C6-C14 aryl, C1-C14 alkoxy, C6-C14 aryloxy, and n is 0 or 1; (b) alcohol compound; and (c) epoxy compound as shown in general formula(I), wherein R2 and R3 independently are hydrogen, C1-C5 straight or branched alkyl, or C1-C5 straight or branched haloalkyl. When the catalyst of the present invention is used for olefin polymerization, particularly propylene polymerization, at least one of the following desired effects can be achieved: high polymerization activity of catalyst, high orientation capability of catalyst, good hydrogen-regulation sensitivity of catalyst, high stereotacticity of high melt index polymer, and low particle fine powder content of polymer.