Core-skin fiber comprising propylene ethylene random copolymer

    公开(公告)号:US11814759B2

    公开(公告)日:2023-11-14

    申请号:US17617427

    申请日:2020-05-26

    CPC classification number: D04H1/43828 D10B2321/021 D10B2321/022

    Abstract: A skin-core fiber having

    a skin of a propylene ethylene copolymer having:
    i) xylene soluble fraction from 14 wt % to 27 wt %;
    ii) intrinsic viscosity of the fraction soluble in xylene at 25° C. from 1.0 to 2.4 dl/g;
    iii) melt flow rate, MFR, from 12 g/10 min to 60 g/10 min;
    iv) an ethylene derived units content from 5.0 wt % to 12.0 wt %;
    v) the ethylene derived units content of the fraction insoluble in xylene from 2.5 wt % to 6.0 wt %;
    vi) the ethylene derived units content of the fraction soluble in xylene ranging from 15.2. wt % to 30.2 wt %;
    vii) C13 NMR sequences PEP on the fraction insoluble in xylene from 3.5 mol % to 5.5 mol %; and
    viii) C13 NMR sequences PEP on the fraction soluble in xylene from 11.0 mol % to 14.2 mol %; and
    a core of a polyethylene having a density between 0.940 g/cm3 to 0.975 g/cm3.

    SOFT AND FLEXIBLE POLYOLEFIN COMPOSITION
    144.
    发明公开

    公开(公告)号:US20230279209A1

    公开(公告)日:2023-09-07

    申请号:US18019907

    申请日:2021-07-01

    Abstract: A polyolefin composition made from or containing:



    (A) 10-40% by weight of a copolymer of propylene with hexene-1, is made from or containing 1.0-6.0% by weight, based on the weight of (A), of units deriving from hexene-1 and has a melt flow rate (MFRA) measured according to ISO 1133, 230° C., 2.16 kg ranging from 20 to 60 g/10 min.; and
    (B) 60-90% by weight of a copolymer of propylene with an alpha-olefin of formula CH2═CHR, and optionally a diene, wherein R is H or a linear or branched C2-C8 alkyl and wherein the copolymer is made from or containing 20-35% by weight, based on the total weight of (B), of alpha-olefin,

    wherein

    the polyolefin composition has an amount of fraction soluble in xylene (XS(tot)) at 25° C. equal to or higher than 65% by weight, and

    the amounts of (A), (B), and XS(tot) being based on the total weight of (A)+(B).

    Compositions obtained from recycled polyolefins

    公开(公告)号:US11708484B2

    公开(公告)日:2023-07-25

    申请号:US16758758

    申请日:2018-11-05

    Abstract: A polyolefin composition made from or containing:
    T1) 70-95 wt %, a polyolefin component containing:
    a1) from 30 wt % to 70 wt % of a propylene based polymer; and
    a2) from 30 wt % to 70 wt % of an ethylene based polymer;
    the sum of a1) and a2), being referred to the total weight of a1) and a2), being 100; and
    T2) 5-30 wt % of a propylene ethylene copolymer containing from 2.0 wt % to 10.0 wt %; of ethylene derived units and having a melt flow rate (230° C./2.16 kg) ranging from 0.5 to 20.0 g/10 min, and having a fraction soluble in xylene at 25° C. lower than 20 wt %.

    the sum of the amount of T1) and T2), being referred to the total weight of T1) and T2), being 100.

    Polypropylene Composition And Molded Article

    公开(公告)号:US20220372198A1

    公开(公告)日:2022-11-24

    申请号:US17771667

    申请日:2020-10-22

    Abstract: A polypropylene composition made from or containing
    a first polymer consisting of component (1) made from or containing a propylene homopolymer having an MFR of 80 to 300 and containing 97.5% by weight or more of xylene insolubles (XI), wherein XI of the propylene homopolymer has a Mw/Mn of 4 to 10; and component (2) made from or containing an ethylene/propylene copolymer containing 35 to 50% by weight of an ethylene-derived unit; wherein the polypropylene composition has the following characteristics: 1) the relative proportions of component (2)/[component (1) and component (2)] is more than 30% by weight and not more than 50% by weight, 2) the intrinsic viscosity of xylene solubles (XSIV) of the first polymer is in the range of 1.5 to 4.0 dl/g, and 3) the MFR of the first polymer is in the range of 20 to 100 g/10 min.

    Polypropylene composition and molded article

    公开(公告)号:US11459454B2

    公开(公告)日:2022-10-04

    申请号:US17051109

    申请日:2019-04-25

    Abstract: A polypropylene composition made from or containing a polymer made from or containing: (i) component (1) made from or containing a propylene homopolymer having MFR of 100 to 300 (at a temperature of 230° C. under a load of 2.16 k(g) and containing more than 97.5% by weight of xylene insolubles (XI), wherein XI has a Mw/Mn of 4 to 10; (ii) component (2) made from or containing an ethylene/propylene copolymer containing 15 to 50% by weight of an ethylene-derived unit; wherein 1) relative proportions of component (1) and component (2) are, respectively, not less than 50 parts by weight but less than 70 pbw and more than 30 pbw but not more than 50 pbw, 2) intrinsic viscosity of xylene solubles (XSIV) of the polymer is in the range of 1.5 to 4.0 dl/g, 3) MFR of the polymer is in the range of 20 to 100 g/10 min.

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