Production of substituted phenylene dibenzoate internal electron donor and procatalyst with same

摘要

The present disclosure is directed to the production of substituted phenylene aromatic diesters and 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate (or “BMPD”) in particular. The processes disclosed herein produce a liquid BMPD product. The liquid BMPD product unexpectedly creates production efficiencies by reducing the number of production steps, reducing the amount and/or number of reagents required for BMPD production. The liquid BMPD product may also be utilized in procatalyst production yielding similar production efficiencies. The procatalyst composition is subsequently used for olefin polymerization.

主权项

1. A process comprising:
(A) combining, under reaction conditions in a reaction mixture, 5-tert-butyl-3-methyl catechol (BMC), triethylamine, benzoyl chloride, and a water insoluble solvent having a water solubility of up to 0.5 g/L at 20° C. selected from the group consisting of chlorobenzene, orthochlorotoluene, and combinations thereof; (B) forming a liquid 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate (BMPD) product that is dissolved in the water insoluble solvent; (C) introducing water into the reaction mixture to quench the reaction and washing with the introduced water the liquid BMPD that is dissolved in the water insoluble solvent to form a phase-separated solution of an aqueous phase and a nonaqueous phase; (D) maintaining the BMPD as a liquid in the water insoluble solvent of the reaction mixture before and during the water wash; and (E) separating the aqueous phase from the nonaqueous phase to form a washed BMPD product which is liquid and dissolved in the water insoluble solvent.