The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2020
Filed:
Jun. 29, 2016
Applicant:
Borealis Ag, Vienna, AT;
Inventors:
Assignee:
BOREALIS AG, , AT;
Primary Examiner:
Int. Cl.
CPC ...
C08F 210/06 (2006.01); C08F 210/16 (2006.01);
U.S. Cl.
CPC ...
C08F 210/06 (2013.01); C08F 210/16 (2013.01); C08F 2800/20 (2013.01);
Abstract
The present invention relates to an olefin polymerization process, wherein propylene and a C4 to C10 a-olefin, preferably 1-butene and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst so as to obtain a polypropylene, wherein the polypropylene comprises C4 to C10 a-olefin, preferably 1-butene-derived comonomer units in an amount of from 0.5 wt % to 15 wt % and ethylene-derived comonomer units in an amount of 0 wt % to 3 wt %, and wherein the Ziegler-Natta catalyst comprises i) an external donor of the formula (I): (R)(RO)Si(R)x and ii) a solid Ziegler-Natta catalyst component being free of external carrier material.