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1. (WO2018059750) PROCESS TO PREPARE PROCATALYST FOR POLYMERIZATION OF OLEFINS

Pub. No.:    WO/2018/059750    International Application No.:    PCT/EP2017/064951
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Tue Jun 20 01:59:59 CEST 2017
IPC: C08F 110/06
C08F 4/656
C08F 4/651
Applicants: SABIC GLOBAL TECHNOLOGIES B.V.
Inventors: MOMAN, Akhlaq
SIDDIQUI, Inaamul Haq
PADMANABHAN, Sudhakar R.
AL-HUMAIDAN, Osamah
AL-ENAZI, Haitham
Title: PROCESS TO PREPARE PROCATALYST FOR POLYMERIZATION OF OLEFINS
Abstract:
The present invention relates to a process for the preparation of a procatalyst suitable for preparing a catalyst composition for olefin polymerization, said process comprising the steps of: Step A) providing or preparing a Grignard compound; Step B) contacting the Grignard compound an alkoxy-or aryloxy silane compound, to give a solid support; Step C) optionally contacting the solid support obtained with at least one activating compound; and Step D) reacting the (activated) support with a halogen- containing Ti-compoundas catalytic species,an activatorand at least one internal electron donor in several sub steps wherein the internal donor is added in portions during at least two of said stages to obtain a procatalyst. The invention moreover relates to a procatalyst, a catalytic system comprising said procatalyst and to a process to prepare polyolefins using said catalyst system and the polyolefins obtained therewith.