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    HIGH-DENSITY POLYETHYLENE COMPOSITIONS, METHOD OF MAKING THE SAME, INJECTION MOLDED ARTICLES MADE THEREFROM, AND METHOD OF MAKING SUCH ARTICLES
    21.
    发明申请
    HIGH-DENSITY POLYETHYLENE COMPOSITIONS, METHOD OF MAKING THE SAME, INJECTION MOLDED ARTICLES MADE THEREFROM, AND METHOD OF MAKING SUCH ARTICLES 有权

    公开(公告)号：US20210024727A1

    公开(公告)日：2021-01-28

    申请号：US17036566

    申请日：2020-10-15

    Applicant: Dow Global Technologies LLC

    Inventor： William J. Michie, JR. ,  Stephanie M. Whited ,  Nathan J. Wiker ,  Dale M. Elley-Bristow

    IPC: C08L23/08 ,  C08F210/16 ,  C08L23/06 ,  H01B3/44 ,  B29C43/00 ,  B29C43/02 ,  B29C45/00 ,  B29C49/00 ,  B65D41/24

    Abstract: The instant invention is a high-density polyethylene composition, method of producing the same, injection molded articles made therefrom, and method of making such articles. The high-density polyethylene composition of the instant invention includes a first component, and a second component. The first component is a high molecular weight ethylene alpha-olefin copolymer having a density in the range of 0.920 to 0.946 g/cm3, and a melt index (I21.6) in the range of 1 to 15 g/10 minutes. The second component is a low molecular weight ethylene polymer having a density in the range of 0.965 to 0.980 g/cm3, and a melt index (I2) in the range of 30 to 1500 g/10 minutes. The high-density polyethylene composition has a melt index (I2) of at least 1, a density in the range of 0.950 to 0.960 g/cm3. The method of producing a high-density polyethylene composition includes the following steps: (1) introducing ethylene, and one or more alpha-olefin comonomers into a first reactor; (2) (co)polymerizing the ethylene in the presence of one or more alpha-olefin comonomers in the first reactor thereby producing a first component, wherein the first component being a high molecular weight ethylene alpha-olefin copolymer having a density in the range of 0.920 to 0.946 g/cm3, and a melt index (I21.6) in the range of 1 to 15 g/10 minutes; (3) introducing the first component and additional ethylene into a second reactor; (4) polymerizing the additional ethylene in the second reactor thereby producing a second component, wherein the second component being a low molecular weight ethylene polymer having a density in the range of 0.965 to 0.980 g/cm3, and a melt index (I2) in the range of 30 to 1500 g/10 minutes; and (5) thereby producing the high-density polyethylene composition, wherein the high-density polyethylene composition having a melt index (I2) of at least 1, a density in the range of 0.950 to 0.960 g/cm3. The injection molded articles according to instant invention comprise the above-described inventive high-density polyethylene composition, and such articles are made via injection molding.

    HIGH-DENSITY POLYETHYLENE COMPOSITIONS, METHOD OF MAKING THE SAME, INJECTION MOLDED ARTICLES MADE THEREFROM, AND METHOD OF MAKING SUCH ARTICLES
    22.
    发明申请
    HIGH-DENSITY POLYETHYLENE COMPOSITIONS, METHOD OF MAKING THE SAME, INJECTION MOLDED ARTICLES MADE THEREFROM, AND METHOD OF MAKING SUCH ARTICLES 审中-公开

    公开(公告)号：US20190031867A1

    公开(公告)日：2019-01-31

    申请号：US16148205

    申请日：2018-10-01

    Applicant: Dow Global Technologies LLC

    Inventor： William J. Michie, JR. ,  Stephanie M. Whited ,  Nathan J. Wiker ,  Dale M. Elley-Bristow

    IPC: C08L23/08 ,  B29C43/00 ,  B29C43/02 ,  C08F210/16 ,  B29C45/00 ,  B29C49/00 ,  B65D41/24 ,  H01B3/44 ,  C08L23/06 ,  B29C43/52 ,  B29K23/00 ,  B29K105/00 ,  B29L31/56

    Abstract: The instant invention is a high-density polyethylene composition, method of producing the same, injection molded articles made therefrom, and method of making such articles. The high-density polyethylene composition of the instant invention includes a first component, and a second component. The first component is a high molecular weight ethylene alpha-olefin copolymer having a density in the range of 0.920 to 0.946 g/cm3, and a melt index (I21.6) in the range of 1 to 15 g/10 minutes. The second component is a low molecular weight ethylene polymer having a density in the range of 0.965 to 0.980 g/cm3, and a melt index (I2) in the range of 30 to 1500 g/10 minutes. The high-density polyethylene composition has a melt index (I2) of at least 1, a density in the range of 0.950 to 0.960 g/cm3. The method of producing a high-density polyethylene composition includes the following steps: (1) introducing ethylene, and one or more alpha-olefin comonomers into a first reactor; (2) (co)polymerizing the ethylene in the presence of one or more alpha-olefin comonomers in the first reactor thereby producing a first component, wherein the first component being a high molecular weight ethylene alpha-olefin copolymer having a density in the range of 0.920 to 0.946 g/cm3, and a melt index (I21.6) in the range of 1 to 15 g/10 minutes; (3) introducing the first component and additional ethylene into a second reactor; (4) polymerizing the additional ethylene in the second reactor thereby producing a second component, wherein the second component being a low molecular weight ethylene polymer having a density in the range of 0.965 to 0.980 g/cm3, and a melt index (I2) in the range of 30 to 1500 g/10 minutes; and (5) thereby producing the high-density polyethylene composition, wherein the high-density polyethylene composition having a melt index (I2) of at least 1, a density in the range of 0.950 to 0.960 g/cm3. The injection molded articles according to instant invention comprise the above-described inventive high-density polyethylene composition, and such articles are made via injection molding.

    Ethylene-based polymer compositions, and articles prepared from the same
    23.
    发明授权
    Ethylene-based polymer compositions, and articles prepared from the same 有权

    公开(公告)号：US10047217B2

    公开(公告)日：2018-08-14

    申请号：US14419850

    申请日：2013-09-12

    Applicant: Dow Global Technologies LLC

    Inventor： Mridula Kapur ,  Troy M. Tambling ,  Stephanie M. Whited

    IPC: C08L23/08 ,  C08L23/04

    Abstract: The invention provides a composition comprising a first composition, wherein the first composition comprises a first ethylene-based polymer and a second ethylene-based polymer, and wherein the first composition has a high load melt index (I21) less than 17, a density greater than, or equal to, 0.952 g/cm3, a molecular weight distribution MWD (conv), defined as the ratio of the weight average molecular weight to the number average molecular weight (Mw (conv)/Mn (conv)), greater than, or equal to, 11; and a viscosity ratio, η(0.01 s−1)/η(100 s−1) at 190° C., greater than, or equal to, 60.

    Method for producing one or more ethylene-based polymers
    24.
    发明授权
    Method for producing one or more ethylene-based polymers 有权

    公开(公告)号：US09988475B2

    公开(公告)日：2018-06-05

    申请号：US14902128

    申请日：2014-08-18

    Applicant: Dow Global Technologies LLC

    Inventor： Linfeng Chen ,  Robert J. Jorgensen ,  Stephanie M. Whited

    IPC: C08F2/38 ,  C08F4/12 ,  C08F26/00 ,  C08F210/16

    CPC classification number: C08F210/16 ,  C08F2/40 ,  C08F2/38 ,  C08F4/6494 ,  C08F4/6543 ,  C08F4/025 ,  C08F210/14 ,  C08F2/34 ,  C08F2/14

    Abstract: The instant invention provides a method for polymerizing one or more ethylene-based polymers. The method for polymerizing one or more ethylene-based polymers according to the present invention comprises the following steps: (1) selecting ethylene and optionally one or more alpha-olefin comonomers; (2) selecting one or more catalyst systems comprising one or more procatalysts comprising Ti, one or more cocatalysts comprising Al, and one or more self-limiting agents (SLA); wherein the ratio of SLA to Ti is from 5:1 to 40:1 and the ratio of Al to SLA is from 2:1 to 40:1; (3) polymerizing said ethylene and optionally one or more alpha-olefin comonomers in the presence of said one or more catalyst systems via a slurry polymerization process or gas-phase polymerization process in one or more reactors; (4) thereby producing one or more ethylene; wherein said catalyst system has a loss of least 85% of catalyst productivity when the temperature is increased from 85 to 115 C.

    High-density polyethylene compositions, method of making the same
    26.
    发明授权
    High-density polyethylene compositions, method of making the same 有权
    高密度聚乙烯组合物及其制备方法

    公开(公告)号：US09181421B2

    公开(公告)日：2015-11-10

    申请号：US14205678

    申请日：2014-03-12

    Applicant: Dow Global Technologies LLC

    Inventor： William J. Michie, Jr. ,  Thomas W. Kay ,  Stephanie M. Whited ,  Dale M. Elley-Bristow ,  David T. Gillespie ,  Lonnie G. Hazlitt

    IPC: C08L23/04 ,  C08L23/08 ,  C08L23/06

    CPC classification number: C08L23/08 ,  C08L23/04 ,  C08L23/06 ,  C08L23/0815 ,  C08L2203/10 ,  Y10T428/24992 ,  Y10T428/273 ,  C08L2666/06

    Abstract: The instant invention is a high-density polyethylene composition, method of producing the same, articles made therefrom, and method of making such articles. The high-density polyethylene composition of the instant invention includes a first component, and a second component. The first component is a high molecular weight ethylene alpha-olefin copolymer having a density in the range of 0.915 to 0.940 g/cm3, and a melt index (I21.6) in the range of 0.5 to 10 g/10 minutes. The second component is a low molecular weight ethylene polymer having a density in the range of 0.965 to 0.980 g/cm3, and a melt index (I2) in the range of 50 to 1500 g/10 minutes. The high-density polyethylene composition has a melt index (I2) of at least 1, a density in the range of 0.950 to 0.960 g/cm3, and g′ of 1.

    Abstract translation: 本发明是高密度聚乙烯组合物，其制造方法，由其制成的制品及其制造方法。 本发明的高密度聚乙烯组合物包括第一组分和第二组分。 第一组分是密度在0.915至0.940g / cm 3范围内的熔融指数（I 21.6）在0.5至10g / 10分钟范围内的高分子量乙烯α-烯烃共聚物。 第二组分是密度在0.965至0.980g / cm 3范围内的熔融指数（I 2）在50至1500g / 10分钟范围内的低分子量乙烯聚合物。 高密度聚乙烯组合物的熔体指数（I 2）至少为1，密度在0.950至0.960g / cm3，g'为1。

    ETHYLENE-BASED POLYMER COMPOSITIONS, AND ARTICLES PREPARED FROM THE SAME
    27.
    发明申请
    ETHYLENE-BASED POLYMER COMPOSITIONS, AND ARTICLES PREPARED FROM THE SAME 审中-公开
    基于乙烯的聚合物组合物及其制备的制品

    公开(公告)号：US20150203672A1

    公开(公告)日：2015-07-23

    申请号：US14419850

    申请日：2013-09-12

    Applicant: Dow Global Technologies LLC

    Inventor： Mridula Kapur ,  Troy M. Tambling ,  Stephanie M. Whited

    IPC: C08L23/08 ,  C08L23/04

    CPC classification number: C08L23/0815 ,  C08L23/04 ,  C08L2205/02 ,  C08L23/06

    Abstract: The invention provides a composition comprising a first composition, wherein the first composition comprises a first ethylene-based polymer and a second ethylene-based polymer, and wherein the first composition has a high load melt index (I21) less than 17, a density greater than, or equal to, 0.952 g/cm3, a molecular weight distribution MWD (conv), defined as the ratio of the weight average molecular weight to the number average molecular weight (Mw(conv)/Mn(conv)), greater than, or equal to, 11; and a viscosity ratio, η(0.01 s−1)/η(100 s−1) at 190° C., greater than, or equal to, 60.

    Abstract translation: 本发明提供包含第一组合物的组合物，其中第一组合物包含第一乙烯基聚合物和第二乙烯类聚合物，并且其中第一组合物具有小于17的高负荷熔体指数（I21），密度更大 定义为重均分子量与数均分子量（Mw（conv）/ Mn（conv））之比的分子量分布MWD（conv）大于或等于0.952g / cm3，大于 ，或等于，11; 并且在190℃，大于或等于60的粘度比（0.01s-1）/（e）（100s-1）。

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