Polypropylene composite
AssigneeBorealis AG
InventorsLuca Boragno, Cornelia Tranninger, Markus Gahleitner
Life of this patent
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Abstract
Fiber reinforced composition comprising (a) a polypropylene random copolymer comprising ethylene and/or C4 to C8 a-olefin (PP-RACO), (b) glass fibers (GF), and (c) a polar modified polypropylene as adhesion promoter (AP), wherein (i) the polypropylene random copolymer comprising ethylene and/or C4 to C8 a-olefin (PP-RACO) heaving a melt flow rate MFR2 (230° C.) measured according to ISO 1133 of at least 2.5 g/10 min, (ii) the glass fibers (GF) are cut glass fibers and (iii) the polymer contained in the reinforced composition forms a continuous phase being the matrix of the fiber reinforced composition.
Claims11
A fiber reinforced composition comprising
- (a) 50.0 to 84.5 wt. % of a metallocene catalyzed polypropylene random copolymer comprising ethylene and/or C4 to C8 α-olefin (PP-RACO),
- (b) 15.0 to 45.0 wt. % glass fibers (GF) and
- (c) 0.5 to 5.0 wt. % a modified polypropylene as adhesion promoter (AP), based on the total weight of the fiber reinforced composition,
- wherein
- (i) the polypropylene random copolymer comprising 1.0 to 10.0 wt. % of ethylene and/or C4 to C8 α-olefin (PP-RACO) having a melt flow rate MFR2 (230° C.) measured according to ISO 1133 of at least 2.5 g/10 min up to 15.0 g/10 min, having a xylene cold soluble content (XCS) measured according ISO 16152 (25° C.) in the range of 10 to 25 wt. %, and having a polydispersity (Mw/Mn) as determined by size exclusion chromatography in the range of 1.5 to 6.5,
- (ii) the glass fibers (GF) are cut glass fibers and
- (iii) the complete polymer contained in the reinforced composition forms a monophasic continuous phase being the matrix of the fiber reinforced composition.
Dependencies are inferred from the claim text.