CATALYST COMPONENT FOR OLEFIN POLYMERIZATION OR COPOLYMERIZATION,PREPARATION METHOD THEREOF, CATALYST CONTAINING SAID CATALYST COMPONENT AND USE THEREOF

摘要

A catalyst component for olefin polymerization or copolymerization, preparation method thereof, catalyst containing said catalyst component and the use thereof in the olefin polymerization or copolymerization. The inventive catalyst component contains magnesium, titanium, halogen, internal electron donor and alkoxy derived from surface modifier, wherein the content of said alkoxy derived from surface modifier is 0.01 to 3 by weight, based on the weight of catalyst component.