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US 11,111,369 B2Granted
Foamed polypropylene composition
AssigneeBorealis AG
InventorsSusanne Kahlen, Daniela Mileva, Georg Grestenberger, Michael Tranninger, Michael Jerabek, Dieter Nicolussi, Anna Hartl
Life of this patent
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Abstract
The present invention is directed to a polypropylene composition (C) comprising a heterophasic propylene copolymer and an inorganic filler, the use of said polypropylene composition (C) for the production of a foamed article and a foamed article obtained from said polypropylene composition (C).
Claims13
A polypropylene composition (C), comprising:
- a) a first heterophasic propylene copolymer (HECO1) having a comonomer content of the xylene soluble fraction (XCS) equal or above 40.0 mol %, said first heterophasic propylene copolymer comprising:
- i) a first matrix being a first propylene polymer (M1) and
- ii) a first elastomeric propylene copolymer (E1) being dispersed in said first matrix,
- b) a second heterophasic propylene copolymer (HECO2) having a comonomer content of the xylene soluble fraction (XCS) below 39.0 mol %, wherein the xylene soluble fraction (XCS) of the second heterophasic copolymer (HECO2) has an intrinsic viscosity (IV) above 3.5 dl/g, said second heterophasic propylene copolymer comprising:
- iii) a second matrix being a second propylene polymer (M2) and
- iv) a second elastomeric propylene copolymer (E1) being dispersed in said second matrix,
- c) an inorganic filler (F),
- d) optionally a high density polyethylene (HDPE), and
- e) optionally a plastomer (PL) being a copolymer of ethylene and a C4 to C8 α-olefin.
6 more elements
Dependencies are inferred from the claim text.