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. 19, 2019
Filed:
Jun. 10, 2016
Applicant:
Borealis Ag, Vienna, AT;
Inventors:
Pauli Leskinen, Helsinki, FI;
Jingbo Wang, Linz, AT;
Johanna Lilja, Porvoo, FI;
Markus Gahleitner, Neuhofen/Krems, AT;
Assignee:
BOREALIS AG, , AT;
Primary Examiner:
Int. Cl.
CPC ...
C08F 210/16 (2006.01); C08F 210/06 (2006.01); C08L 23/14 (2006.01);
U.S. Cl.
CPC ...
C08F 210/16 (2013.01); C08F 210/06 (2013.01); C08L 23/14 (2013.01);
Abstract
The present invention relates to a process for producing polypropylene polymer composition by polymerizing propylene with a C4 to C8 a-olefin comonomer and with ethylene in a sequential polymerization process with at least two reactors connected in series in the presence of a solid Ziegler-Natta catalyst component being free of external carrier material and any phthalic compounds, and wherein the C4 to C8 a-olefin comonomer content in the propylene polymer composition is at least 4.5 wt-%.