Polypropylene compositions for a layer element

  • US 10,934,422 B2
  • Filed: 07/29/2016
  • Issued: 03/02/2021
  • Est. Priority Date: 10/28/2015
  • Status: Active Grant
First Claim
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1. A layer element comprising at least one layer that includes a polypropylene composition (CA), the polypropylene composition (CA) comprising:

  • 5 to 50 wt % of a heterophasic copolymer of propylene (A) which has a Melting temperature (Tm) of at least 145°

    C. (DSC), and a Vicat softening temperature (Vicat A) of at least 90°

    C. (according to ASTM D 1525, method A, 50°

    C./h, 10N), and which comprisesa polypropylene matrix component (a1) andan elastomeric propylene copolymer component (a2) which is dispersed in said polypropylene matrix (a1), and20 to 60 wt % of a heterophasic copolymer of propylene (B) which has a Melting temperature (Tm) of at least 145°

    C. (DSC), and a Vicat softening temperature (Vicat A) of at least 90°

    C. (according to ASTM D 1525, method A, 50°

    C./h, 10N), and which comprises;

    a polypropylene matrix component (b1) andan elastomeric propylene copolymer component (b2) which is dispersed in said polypropylene matrix (b1),10 to 40 wt % of an inorganic filler,0 to 30 wt % of an plastomer, and0.3 to 5 wt % of an additive(s) other than the inorganic filler,based on the total amount (100 wt %) of the polypropylene composition;

    wherein the XCS of heterophasic copolymer of propylene (B) is higher than the XCS of heterophasic copolymer of propylene (A).

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