PROCATALYST FOR POLYMERIZATION OF OLEFINS COMPRISING AN AMINOBENZOATE INTERNAL DONOR AND A 1,3-DIETHER INTERNAL DONOR IN A SPECIFIC RATIO

摘要

A process for preparing a procatalyst for polymerization of olefins, comprising contacting a magnesium-containing support with a halogen-containing titanium compound, a first internal electron donor represented by Formula A, a second internal electron donor represented by Formula B, and an activator; wherein the molar ratio of the first internal donor to the second internal donor is between 0.01 and 0.7;; ;wherein in Formula A each R⁸⁰ group is independently a substituted or unsubstituted aromatic group; and R⁸¹, R⁸², R⁸³, R⁸⁴, R⁸⁵, R⁸⁶ and R⁸⁷ are each independently selected from a hydrogen or a hydrocarbyl group; wherein in Formula B R⁵¹ and R⁵² are each independently selected from a hydrogen or a hydrocarbyl group; and R⁵³ and R⁵⁴ are each independently selected from hydrogen, a halide or a hydrocarbyl group.