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:
Mar. 12, 2019
Filed:
Jan. 12, 2015
Applicant:
Borealis Ag, Vienna, AT;
Inventors:
Assignee:
Borealis AG, Vienna, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 210/16 (2006.01); C08F 4/64 (2006.01); C08F 210/06 (2006.01); B32B 27/32 (2006.01); C08J 5/18 (2006.01); C08F 110/02 (2006.01);
U.S. Cl.
CPC ...
C08F 210/06 (2013.01); B32B 27/32 (2013.01); C08J 5/18 (2013.01); B32B 2307/518 (2013.01); C08F 110/02 (2013.01); C08F 2410/00 (2013.01); C08F 2410/04 (2013.01); C08F 2500/12 (2013.01); C08F 2500/26 (2013.01); C08F 2800/10 (2013.01); C08J 2323/14 (2013.01);
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): (R)(RO)Si(R).