CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS

    公开(公告)号:US20190338055A1

    公开(公告)日:2019-11-07

    申请号:US16097103

    申请日:2017-04-24

    Abstract: The present disclosure provides a solid catalyst component obtainable by a process including: (a) a first step in which Ti(OEt)4, is reacted with a Mg based compound of formula MgCln(ORI)2-n, where n is from about 0.5 to about 1.5, RI is a C1-C10 alkyl groups, the Ti(OEt)4 and the Mg compound are used in amounts such that the Ti/Mg molar ratio is of about 0.2 to about 0.4, the reaction temperature is about 110 to about 130° C., and the reaction time is about 2 to about 5 hours; and (b) a subsequent step in which the product obtained in step (a) is reacted with a Ti compound of the formula Ti(ORI)4-yCly, where y is a number between 3 and 4.

    FILM COMPRISING A POLYOLEFIN COMPOSITION
    274.
    发明申请

    公开(公告)号:US20190284383A1

    公开(公告)日:2019-09-19

    申请号:US16300634

    申请日:2017-05-09

    Abstract: The disclosure provides a film made from or containing a polyolefin composition made from or containingA) 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 from 0.1% to 20% by weight of 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 from 25% to 75% by weight of ethylene units.

    PLATE COMPRISING A POLYOLEFIN COMPOSITION FOR 3D PRINTER

    公开(公告)号:US20190283322A1

    公开(公告)日:2019-09-19

    申请号:US16339101

    申请日:2017-09-22

    Abstract: A plate for use in an extrusion-based additive manufacturing system made from or containing a top layer made from or containing a sheet or film made from or containing polyolefin composition A) made from or containing(i) 5-35% by weight of a propylene homopolymer or a propylene ethylene copolymer; (ii) 20-50% by weight of a copolymer of ethylene and a C3-C8 alpha-olefin; and (iii) 30-60% by weight of a copolymer of ethylene and propylene wherein the amounts of (i), (ii) and (iii) being referred to the total weight of (i)+(ii)+(iii) and the sum of the amount of (i), (ii) and (iii) being 100.

    Process for forming a consumable filament

    公开(公告)号:US10385478B2

    公开(公告)日:2019-08-20

    申请号:US16094647

    申请日:2017-03-20

    Abstract: The present disclosure provides a filament for use in an extrusion-based additive manufacturing system made from or containing a propylene ethylene copolymer having: ethylene derived units content ranging from about 3.0 wt % to about 12.0 wt %, based upon the weight of the propylene ethylene copolymer; MFR L (Melt Flow Rate according to ISO 1133, condition L, at 230° C. and 2.16 kg load) from about 4 to about 20 g/10 min; and xylene solubles measured at 25° C. from about 3 wt % to about 30 wt %, based upon the weight of the propylene ethylene copolymer. The disclosure further provides an extrusion-based additive manufacturing system made from or containing the filament as well as 3D printed articles prepared from the system.

    Pre-polymerized catalyst components for the polymerization of olefins

    公开(公告)号:US10351641B2

    公开(公告)日:2019-07-16

    申请号:US14899296

    申请日:2014-06-10

    Abstract: The present technology relates to a pre-polymerized catalyst component for the polymerization of olefins, characterized by a non-stereospecific solid catalyst component comprising Ti, Mg and a halogen and an amount of a (co)polymer of an alpha-olefin CH2═CHR1, where R1 is a C1-C12 hydrocarbon group ranging from 0.1 to 500 g per g of said solid catalyst component. In some embodiments, the (co)polymer is characterized by an isotacticity, expressed in terms isotactic pentads, of higher than 60 molar % and an intrinsic viscosity, measured in tetraline at 135° C., of at least 1.0 dL/g.

    Catalyst components for the polymerization of olefins

    公开(公告)号:US10246532B2

    公开(公告)日:2019-04-02

    申请号:US15557704

    申请日:2016-03-08

    Abstract: A solid catalyst component which exhibits high activity and stereospecificity in the polymerization of olefins made from or containing Mg, Ti and an electron donor of formula (I) where R and R1 are selected from the group consisting of C1-C20 hydrocarbon groups, C6-C14 aryl or alkylaryl groups hydrocarbon groups, optionally containing a heteroatom selected from the group consisting of halogens, P, S, N, and O; R2 to R11 groups, equal to or different from each other, are hydrogen, halogen or C1-C15 hydrocarbon groups which can be optionally fused together to form one or more cycles with the proviso that R6 and R11 cannot join together to form a phenyl ring.

    Polyolefin nanocomosites materials
    280.
    发明授权

    公开(公告)号:US10214625B2

    公开(公告)日:2019-02-26

    申请号:US15591979

    申请日:2017-05-10

    Abstract: A polyolefin nanocomposite material comprising the following components: (A) a crystalline or semi-crystalline polyolefin resin; and (B) a nanosized mineral filler comprising or substantially consisting of a hydrotalcite, wherein the amount of the hydrotalcite is from 0.02 to 6 parts by weight per 100 parts by weight of the nanocomposite material, and the ratio MFR (1)/MFR (2) of the melt flow rate value MFR (1) of component (A) to the melt flow rate value MFR (2) of the polyolefin nanocomposite material is of at least 1.02, charachterized in that the said polyolefin nanocomposite material includes a compatibilizer the dispersion of the mineral filler (B) and compatibilizer in the polyolefin resin is produced at shear mixing rates from 30 to 300 sec−1.

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