Exterior automotive article with reduced paintability failure

US9150715B2 · kind B2 · utility

Assignee

• Borealis AG · AT

Inventors

• Michael Tranninger · Traun, AT
• Klaus Lederer · Kalwang, AT

Key dates

• Filing date: Mar 1, 2012
• Grant date: Oct 6, 2015
• Expiry date: May 10, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2314/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Exterior automotive article comprising a composition comprising a polypropylene, an elastomeric copolymer, and a mineral filler, wherein said polypropylene (PP) has a comonomer content of equal or below 1.0 wt.-%, the comonomers are ethylene and/or at least one C4 to C20 a-olefin, and <2,1> erythro regiodefects of equal or more than 0.4 mol.-%, said elastomeric copolymer (EC) comprises units derived from ethylene and at least one C3 to C10 a-olefin, said composition (C) has a melt flow rate MFR2 (230° C.) in the range of 5 to 80 g/10 min.