Patent · US Active

Polypropylene composition with excellent surface appearance

US11332603B2 · kind B2 · utility

0Cited by

9References

18Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Daniela Mileva · Linz, AT
Susanne Kahlen · Leonding, AT
Georg Grestenberger · Steyr, AT
Anton Sageder · Linz, AT
Christof Wurnitsch · Eisenlohrsweg, AT
Anna Hartl · Linz, AT
Patrick Rover · Linz, AT
Erwin Pirklbauer · Linz, AT

Key dates

Filing date	Jun 26, 2018
Grant date	May 17, 2022
Priority date	—
Expiry date	Jun 26, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2207/062
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention is directed to a polypropylene composition (C) comprising a heterophasic propylene copolymer (HECO1) having an intrinsic viscosity (IV) of the xylene soluble fraction (XCS) above 3.5 dl/g, an inorganic filler (F) and a nucleating agent (NU) being a dicarboxylic acid and/or a salt thereof. Further, the present invention is directed to the use of said polypropylene composition (C) for the production of a foamed article as well as a foamed article comprising said polypropylene composition (C). The present invention is also directed to the use of a nucleating agent (NU) being dicarboxylic acid and/or a salt thereof for the reduction of tigerskin of a polypropylene composition.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.