PROCESS FOR IMPROVING BULK DENSITY WITH MULTI-CONTACT PROCATALYST AND PRODUCT

摘要

Disclosed herein are processes for preparing procatalyst compositions which include multiple contact steps in the presence of a substituted phenylene aromatic diester and at least one other internal electron donor. The multi-contact procatalyst compositions produced from the present processes improve polymer properties and polymerization parameters. In particular, the present multi-contact procatalyst compositions improve polymer bulk density.