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US 11,827,758 B2Granted
Article comprising a fiber reinforced polypropylene composition
AssigneeBorealis AG
InventorsMichael Jerabek, Wolfgang Stockreiter, Thomas Lummerstorfer
Life of this patent
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Abstract
The present invention is directed to an article comprising a fiber reinforced composition (C), said composition comprising a propylene polymer (PP), an elastomeric ethylene copolymer (E) and fibers (F).
Claims12
An article comprising a fiber reinforced composition (C), comprising
- (i) 33.0 to 76.0 wt.-% of a propylene homopolymer (PP) which is at least bimodal, has a xylene cold soluble (XCS) content below 3.1 wt %, and has a melt flow rate MFR2 (230° C., 2.16 kg) determined according to ISO 1133 in the range of 30 to 250 g/10 min,
- (ii) 2.5 to 10.0 wt.-% of an elastomeric ethylene copolymer (E) which is a copolymer of ethylene and a C4-C10 α-olefin, having a melt flow rate MFR2 (190° C., 2.16 kg) determined according to ISO 1133 of at least 25.0 g/10 min,
- (iii) 1.5 to 2.0 wt.-% of an adhesion promoter (AP), and
- (iv) 20.0 to 50.0 wt.-% of fibers (F)
- based on the overall weight of the fiber reinforced composition (C), and
- the fiber reinforced composition (C) not containing more than 5 wt.-%, based on the total amount the fiber reinforced composition (C), of polymers other than the propylene homopolymer (PP), the elastomeric ethylene copolymer (E), and the adhesion promoter (AP).
3 more elements
Dependencies are inferred from the claim text.