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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 12662592 B1

PDFFull Text
Date of Patent:
Jun. 23, 2026

Filed:

Jun. 24, 2021

Polypropylene composition for hms pp foam sheet with balanced bending resistance

Applicant:

Borealis Ag, Vienna, AT;

Inventors:

Antti Tynys, Linz, AT;

Norbert Reichelt, Linz, AT;

Yi An Lin, New Taipei, CN;

Assignee:

BOREALIS AG, Vienna, AT;

Attorney:

Tarolli, Sundheim, Covell & Tummino LLP

Primary Examiner:

Eli D Strah

Int. Cl.
CPC ...
C08L 23/12 (2006.01); B32B 27/06 (2006.01); B32B 27/32 (2006.01); C08J 5/18 (2006.01); C08J 9/00 (2006.01); C08J 9/14 (2006.01); C08K 3/34 (2006.01);
U.S. Cl.
CPC ...
C08L 23/12 (2013.01); B32B 27/065 (2013.01); B32B 27/32 (2013.01); C08J 5/18 (2013.01); C08J 9/0061 (2013.01); C08J 9/0066 (2013.01); C08J 9/141 (2013.01); C08K 3/34 (2013.01); B32B 2266/025 (2013.01); B32B 2270/00 (2013.01); B32B 2272/00 (2013.01); B32B 2307/304 (2013.01); B32B 2307/546 (2013.01); B32B 2307/72 (2013.01); C08J 2201/03 (2013.01); C08J 2203/14 (2013.01); C08J 2203/16 (2013.01); C08J 2323/12 (2013.01); C08J 2323/14 (2013.01); C08J 2400/30 (2013.01); C08J 2423/12 (2013.01); C08L 2203/14 (2013.01); C08L 2205/025 (2013.01); C08L 2205/24 (2013.01); C08L 2207/20 (2013.01);
Abstract

The present invention relates to a polypropylene composition comprising —10 to 50 wt. % of recycled polypropylene (R-PP) and/or linear polypropylene (L-PP); —40 to 89.95 wt. % of a high melt strength polypropylene (HMS-PP) having an F30 melt strength of more than 25.0 cN and a v30 melt extensibility of more than 205 mm/s, wherein the F30 melt strength and the v30 melt extensibility are determined according to ISO 16790:2005; and —0.05 to 10 wt. % of a nucleating agent (NA); a foamed sheet formed from the polypropylene composition; an article comprising the foamed sheet and a process comprising the step of forming the polypropylene composition. Furthermore, the invention is further directed to the usage of the polypropylene composition for the formation of foamed sheets.

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