CATALYST COMPONENT FOR OLEFIN POLYMERIZATION REACTION AND CATALYST COMPRISING SAME

摘要

A catalyst component for olefin polymerization reaction and a catalyst comprising same are provided. The catalyst component comprises magnesium, titanium, halogen and electron donor, wherein the electron donor is selected from at least one of diol ester compounds. The activity and stereospecificity of the catalyst are improved greatly when the diol ester contains a certain amount of isomer which has the Fischer Projection of (II), and especially the isotactic index of the obtained polymer is improved greatly when a polymer of high melt index is produced.