POLYPROPYLENE COMPOSITION AND MOLDED ARTICLE

    公开(公告)号:US20210017367A1

    公开(公告)日:2021-01-21

    申请号:US16981217

    申请日:2019-03-15

    Abstract: A polypropylene composition made from or containing: (i) component (1) made from or containing a propylene/ethylene copolymer containing more than 1.5% by weight and not more than 4% by weight of an ethylene-derived unit; (ii) component (2) made from or containing an ethylene/propylene copolymer containing 65 to 87% by weight of an ethylene-derived unit; and (iii) 0.01 to 0.5 parts by weight of a crystal nucleating agent, based on a total of 100 parts by weight of component (1) and component (2); wherein the polypropylene composition has 1) weight ratio of component (1) to component (2) is in the range of 80:20 to 90:10, 2) intrinsic viscosity of xylene solubles (XSIV) in the range of 0.8 to 1.4 dl/g, 3) MFR (at 230° C. under a load of 2.16 kg) in the range of 5 to 15 g/10 min., 4) viscosity ratio in the range of 0.40 to 0.80 where Viscosity   ratio = XSIV Intrinsic   viscosity   of   component   ( 1 ) .

    Multilayer film comprising a polyolefin composition

    公开(公告)号:US10882287B2

    公开(公告)日:2021-01-05

    申请号:US16613635

    申请日:2018-05-03

    Abstract: A multilayer film made from or containing at least one layer made from or containing a polyolefin composition made from or containing: A) 5-35% by weight, based upon the total weight of the polyolefin composition, of a propylene homopolymer or a propylene ethylene copolymer; B) 25-50% by weight, based upon the total weight of the polyolefin composition, of a copolymer of ethylene and a C3-C8 alpha-olefin containing 0.1-20% by weight of C3-C8 alpha-olefin units; and C) 30-60% by weight, based upon the total weight of the polyolefin composition, of a copolymer of ethylene and propylene containing 25-75% by weight of ethylene units.

    Soft polyolefin composition
    174.
    发明授权

    公开(公告)号:US10793655B2

    公开(公告)日:2020-10-06

    申请号:US16087731

    申请日:2017-03-23

    Abstract: The present disclosure provides a polyolefin composition made from or containing: A) from about 60 to about 89% by weight based upon the total weight of the polyolefin composition of a copolymer of butene-1 with ethylene having a copolymerized ethylene content of up to about 18% by mole based upon the molar composition of the copolymer, and no melting peak detectable at the DSC at the second heating scan; and B) from about 11 to about 40% by weight based upon the total weight of the polyolefin composition of an ethylene polymer having density of from about 0.900 to about 0.970 g/cm3, measured according to ISO 1183 at 23° C.; wherein the amounts of A) and B) are referred to the total weight of A)+B) and the DSC second heating scan is carried out with a heating rate of 10° C. per minute. The composition is useful for preparing gaskets.

    PROPYLENE ETHYLENE RANDOM COPOLYMER
    179.
    发明申请

    公开(公告)号:US20200032041A1

    公开(公告)日:2020-01-30

    申请号:US16495289

    申请日:2018-03-23

    Abstract: A propylene ethylene copolymer having: (i) an ethylene derived units content (C2) ranging from 2.0 wt % to 11.0 wt %, based upon the total weight of the copolymer; (ii)) a fraction soluble in xylene (Xs) at 25° C. (Xs) ranging from 7.1 wt % to 28.5 wt %, based upon the total weight of the copolymer; (iii) an intrinsic viscosity of the fraction soluble in xylene at 25° C. ranging from 3.2 dl/g to 5.6 dl/g; (iv) a melting point (Tm) higher than 140.0° C. and fulfilling the relation (I): Tm>155−1.4×C2   (I); and (v) a flexural modulus (TM) higher than 500 MPa and fulfilling the relation (II) TM>1900−285×C2+50×Xs   (II).

    PROPYLENE-BASED COMPOSITION FOR PIPES
    180.
    发明申请

    公开(公告)号:US20190338113A1

    公开(公告)日:2019-11-07

    申请号:US16338904

    申请日:2017-09-22

    Abstract: A polyolefin composition made from or containing:A) from 85.0 wt % to 99.5 wt % of a propylene 1-hexene copolymer, based upon the weight of the polyolefin composition and B) from 0.5 wt % to 15.0 wt % of a propylene, ethylene copolymer composition, based upon the weight of the polyolefin composition, made from or containing: b1) from 12 wt % to 52 wt % of a propylene homopolymer or a propylene/ethylene copolymer, based upon the weight of the propylene, ethylene copolymer composition and b2) from 48 wt % to 88 wt % of a propylene ethylene copolymer, based upon the weight of the propylene, ethylene copolymer composition, having a content of ethylene derived units ranging from 15.0 wt % to 42.0 wt %; wherein the polyolefin composition has a melt flow rate (230° C./5 kg. ISO 1133) ranging from 0.2 g/10 min to 4.0 g/10 min; the sum A+B being 100 and the sum b1+b2 being 100.

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