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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.:

US 12234351 B1

PDFFull Text
Date of Patent:
Feb. 25, 2025

Filed:

Jan. 15, 2020

Random propylene polymer composition and use in extrusion blow moulding

Applicant:

Borealis Ag, Vienna, AT;

Inventors:

Jingbo Wang, Linz, AT;

Markus Gahleitner, Linz, AT;

Friedrich Berger, Linz, AT;

Karlheinz Friedrich, Schwechat, AT;

Assignee:

BOREALIS AG, Vienna, AT;

Attorney:

DITTHAVONG, STEINER & MLOTKOWSKI

Primary Examiner:

Robert C Boyle

Int. Cl.
CPC ...
C08L 23/14 (2006.01); B29C 49/04 (2006.01); C08F 2/00 (2006.01); C08F 4/646 (2006.01); C08F 4/649 (2006.01); C08F 4/654 (2006.01); C08F 210/02 (2006.01); C08F 210/14 (2006.01); B29K 23/00 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
C08L 23/142 (2013.01); B29C 49/04 (2013.01); C08F 2/001 (2013.01); C08F 4/6465 (2013.01); C08F 4/6492 (2013.01); C08F 4/6545 (2013.01); C08F 4/6548 (2013.01); C08F 210/02 (2013.01); C08F 210/14 (2013.01); B29K 2023/14 (2013.01); B29L 2031/7158 (2013.01); C08L 2205/025 (2013.01); C08L 2205/06 (2013.01); C08L 2205/24 (2013.01); C08L 2308/00 (2013.01); C08L 2314/02 (2013.01);
Abstract

The present invention is directed to a propylene polymer composition comprising at least one propylene copolymer (C-PP), and an α-nucleating agent (NU), wherein the propylene copolymer (C-PP) comprises two propylene copolymer fractions (PP1) and (PP2), wherein propylene copolymer fraction (PP1) is contained in the propylene copolymer (C-PP) in an amount of 30 to 70 wt. % and the propylene copolymer fraction (PP2) is contained in the propylene copolymer (C-PP) in an amount of 70 to 30 wt. %, the comonomer content of propylene copolymer fraction (PP1) is in the range of 0.5 to 2.5 wt.-% and the comonomer content of the propylene copolymer fraction (PP1) is lower compared to the comonomer content of the propylene copolymer fraction (PP2), and the propylene polymer composition has (a) a melt flow rate MFR(230° C.) measured according to according to ISO 1133 of 1 to 5 g/10 min., and (b) a comonomer content of 4.0 to 8.0 wt. %, the comonomer(s) being ethylene and/or at least one Cto Cα-olefin. The above propylene polymer composition has improved impact and optical properties. The invention further provides a method of producing the above propylene polymer composition and an extrusion blow molded article comprising the above propylene polymer composition.

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