Polyethylene composition for filaments or fibers

    公开(公告)号:US11999839B2

    公开(公告)日:2024-06-04

    申请号:US17779686

    申请日:2020-12-02

    Abstract: A polyethylene composition for preparing filaments and fibers, made from or containing:



    A) from 65% to 97% by weight of a copolymer of ethylene having:

    1) a density of 0.925 g/cm3 or higher; and
    2) a MI2 value of 0.5 g/10 min. or greater; and


    B) from 3% to 35% by weight of a polyolefin composition made from or containing:

    BI) from 5% to 35% by weight of a propylene homopolymer;
    BII) from 20% to 50% by weight of an ethylene homopolymer or a copolymer of ethylene with up to 5% by weight of alpha-olefin comonomers, containing 5% by weight or less of a fraction soluble in xylene at 25° C.; and
    BIII) from 30% to 60% by weight of a terpolymer of ethylene, propylene, and 1-butene containing from 30% to 85% by weight of a fraction soluble in xylene at 25° C.

    Polyamide composition
    19.
    发明授权

    公开(公告)号:US11965093B2

    公开(公告)日:2024-04-23

    申请号:US17311042

    申请日:2019-12-06

    Applicant: BASF SE

    Abstract: Described herein is a polyamide composition including:



    (a) at least one first semi-crystalline polyamide including repeating units derived from two or more diacids, and one or more diamine(s),
    (b) at least one second semi-crystalline polyamide including repeating units derived from two or more diacids and one or more diamine(s),
    (c) at least one glass fibre, and
    (d) optionally at least one further additive,
    wherein the at least one first semi-crystalline polyamide and the at least one second semi-crystalline polyamide are different from each other and defined by their molar ratio of repeating units derived from aromatic dicarboxylic acids and aliphatic dicarboxylic acids. As described herein, the polyamide composition provides a superior combination of high thermal stability (i.e. heat distortion temperature) and high flowability (i.e. low melt viscosity).

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