CATALYST SYSTEM FOR POLYMERISATION OF AN OLEFIN

Title:

CATALYST SYSTEM FOR POLYMERISATION OF AN OLEFIN

Document Type and Number:

WIPO Patent Application WO/2015/091981

Kind Code:

A3

Abstract:

The present invention relates to a process for the preparation of a catalyst system suitable for olefin polymerization, wherein the process comprises the steps of: A) providing said procatalyst obtainable via a process comprising the steps of: i) contacting a compound R4 zMgX4 2-z with an alkoxy- or aryloxy-containing silane compound to give a first intermediate reaction product, ii) optionally contacting the solid product obtained in step i) with at least one activating compound selected from the group formed of activating electron donors and metal alkoxide compounds; iii) contacting the first or second intermediate reaction product, obtained respectively in step i) or ii), with a halogen-containing Ti-compound and optionally an internal electron donor to obtain said procatalyst; B) contacting said procatalyst with a co-catalyst and the at least diethylaminotriethoxysilane as the external donor. Moreover, the present invention relates to a catalyst system obtained or obtainable by the process of the present invention and to a process for preparing a polyolefin by contacting at least one olefin with the catalyst system according to the invention. In addition, the present invention relates to a polyolefin obtained or obtainable by the process for preparing a polyolefin according to the present invention and to a composition comprising a propylene-ethylene copolymer and a shaped article thereof. In addition, the invention relates to the use of said polyolefin.

Inventors:

BATINAS-GEURTS AURORA ALEXANDRA (NL)
ZUIDEVELD MARTIN ALEXANDER (NL)
GERLOFSMA RAYMOND (NL)
STEENBAKKERS-MENTING HENRICA NORBERTA ALBERTA MARI (NL)

Application Number:

PCT/EP2014/078795

Publication Date:

August 13, 2015

Filing Date:

December 19, 2014

Export Citation:

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Assignee:

SAUDI BASIC IND CORP (SA)
SABIC GLOBAL TECHNOLOGIES BV (NL)
BATINAS-GEURTS AURORA ALEXANDRA (NL)
ZUIDEVELD MARTIN ALEXANDER (NL)
GERLOFSMA RAYMOND (NL)
STEENBAKKERS-MENTING HENRICA NORBERTA ALBERTA MARI (NL)

International Classes:

C08F210/16; C08F4/646; C08F4/656; C08F10/06

Domestic Patent References:

WO2011106497A1

2011-09-01

Foreign References:

EP1783145A1	2007-05-09
EP1538167A1	2005-06-08
US20050032991A1	2005-02-10
EP0841348A2	1998-05-13
CN101104656B	2010-11-10
US20130030100A1	2013-01-31
EP1270651A1	2003-01-02

Other References: