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US 2016/0108219 A1Published application
Stiff polypropylene composition suitable for primerless painting
AssigneeBorealis AG
InventorsGeorg Grestenberger, Claudia Kniesel, Daniela Mileva, Dietrich Gloger
Life of this patent
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Abstract
The present invention is directed to a polypropylene composition (C), an article comprising the polypropylene composition (C) as well as the use of the polypropylene composition (C) to reduce paintability failure of a molded article.
Claims19
Polypropylene composition (C), the polypropylene composition (C) comprising:
- (a) 30.0 to 60.0 wt.-%, based on the total weight of the composition, of a heterophasic propylene copolymer (HPP) having a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 10.0 to 40.0 g/10 min, comprising
- (a1) a polypropylene matrix (M), and
- (a2) an elastomeric propylene copolymer (E1)
- (b) 5.0 to 30.0 wt.-%, based on the total weight of the composition, of a polypropylene homopolymer (PP-H1), and
- (c) 25.0 to 35.0 wt.-%, based on the total weight of the composition, of a mineral filler (F) being selected from the group consisting of talcum, wollastonite, caolin and mica,
- wherein the polypropylene composition (C) has a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 10.0 to 25.0 g/10 min.
3 more elements
Article comprising a polypropylene composition (C), the polypropylene composition (C) comprising:
- (a) 30.0 to 60.0 wt.-%, based on the total weight of the composition, of a heterophasic propylene copolymer (HPP) having a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 10.0 to 40.0 g/10 min, comprising
- (a1)) a polypropylene matrix (M), and
- (a2) an elastomeric propylene copolymer (E1)
- (b) 5.0 to 30.0 wt.-%, based on the total weight of the composition, of a polypropylene homopolymer (PP-H1), and
- (c) 25.0 to 35.0 wt.-%, based on the total weight of the composition, of a mineral filler (F) being selected from the group consisting of talcum, wollastonite, caolin and mica,
- wherein the polypropylene composition (C) has a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 10.0 to 25.0 g/10 min.
3 more elements
Dependencies are inferred from the claim text.