A catalyst component for ethylene polymerization, preparation thereof and a catalyst comprising the catalyst component

摘要

A catalyst component for ethylene polymerization comprising an organic silicon compound of the formula (I), wherein R 1 is a C 3 -C 20 aliphatic hydrocarbyl, which is substituted with at least one substituent chosen from halogens, C 1 -C 6 acyloxy groups, epoxy, amino, C 1 -C 6 alkylamino groups, di(C 1 -C 6 alkyl)amino groups, C 1 -C 6 alkoxy groups, and oxo group; R 2 , R 3 and R 4 are independently a C 1 -C 10 aliphatic hydrocarbyl, a C 3 -C 10 alicyclic hydrocarbyl, a C 6 -C 10 aryl, a C 7 -C 10 aralkyl, or a C 7 -C 10 alkaryl, is disclosed. A process for preparing the catalyst component and a highly active catalyst comprising the catalyst component are also disclosed.