Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 12, 2019
Patent Application Number
15106101
Date Filed
January 12, 2015
Patent Citations Received
0
0
...
Patent Primary Examiner
Patent abstract
The present invention relates to an olefin polymerization process, wherein propylene and 1-butene and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst system so as to obtain a polypropylene, wherein the polypropylene comprises 1-butene-derived comonomer units in an amount of from 5 to 20 wt % and optionally ethylene-derived comonomer units in an amount of up to 3 wt %, and the Ziegler-Natta catalyst system comprises an external donor of the following formula (I): (R3)z(R2O)ySi(R1)x.
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