Patent · US Active

Polypropylene compositions for automotive applications

US10308797B2 · kind B2 · utility

4Cited by

2References

11Claims

0Family size

Assignee

Borealis AG · AT

Inventors

Thomas Lummerstorfer · Linz, AT
Georg Grestenberger · Steyr, AT
Michael Tranninger · Traun, AT

Key dates

Filing date	Sep 28, 2016
Grant date	Jun 4, 2019
Priority date	—
Expiry date	Sep 28, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2207/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to novel polypropylene compositions suitable for automotive applications, having a good balance of mechanical properties and especially low gloss. The inventive compositions are characterized by at least two heterophasic propylene copolymers (HECOs), where at least one of the HECOs is characterized by a rather high molecular weight rubber, an ethylene-a-olefin elastomer (EOE) having a rather low melt flow rate MFR2 (190° C.) and a specific ratio between the MFR of the ethylene-a-olefin elastomer (EOE) and of at least one of the heterophasic propylene copolymers (HECOs).

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