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THERMOPLASTIC COMPOSITION

  • US 20190315955A1
  • Filed: 06/21/2019
  • Published: 10/17/2019
  • Est. Priority Date: 12/23/2016
  • Status: Active Grant
First Claim
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1. A thermoplastic composition comprising:

  • (A) from 10 to 69 wt. %, based on the weight of said composition polypropylene;

    (B) at least 30 wt. %, based on the weight of said composition of a heterophasic propylene copolymer comprising;

    from 70 to 92 wt. % based on the weight of said heterophasic propylene copolymer of a propylene-based matrix consisting of a polypropylene polymer;

    wherein the polypropylene polymer has an intrinsic viscosity IVPP;

    from 8 to 30 wt. % based on the weight of said heterophasic propylene copolymer of a dispersed ethylene-α

    -olefin copolymer having an ethylene content of between 10 and 55 wt. % based on the weight of the ethylene-α

    -olefin copolymer and wherein the ethylene-α

    -olefin copolymer has an intrinsic viscosity IVEPR; and

    wherein the ratio of IVEPR/IVPP is between 3 and 7, wherein IVPP and IVEPR are determined according to ISO-1628-1 (2009) and ISO-1628-3 (2010) based on the amount of the xylene-soluble matter (CXS) and xylene-insoluble matter (CXI) measured according to ISO 16152 (2005);

    C) from 0-30 wt. %, based on the weight of said composition of an ethylene-α

    -olefin elastomer comprising ethylene and a C3 to C10 α

    -olefin;

    D) from 1-30 wt. %, based on the weight of said composition of a talc;

    E) from 0-10 wt. % based on the weight of said composition of a high-density polyethylene (HDPE);

    F) from 0-5 wt. %, based on the weight of said composition of an additive.

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