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    Bioriented polyethylene film
    21.
    发明授权
    Bioriented polyethylene film 有权

    公开(公告)号：US11273592B2

    公开(公告)日：2022-03-15

    申请号：US16435935

    申请日：2019-06-10

    Applicant: Dow Global Technologies LLC

    Inventor： Xiao Bing Yun ,  Rongjuan Cong ,  Jianping Pan ,  Teresa P. Karjala

    IPC: B32B27/32 ,  B29C55/00 ,  B29C48/00 ,  C08L23/08 ,  B29C55/14 ,  B32B15/08 ,  B32B15/20 ,  B32B27/08 ,  B32B27/10 ,  B32B27/16 ,  B32B27/34 ,  B32B27/36 ,  C08J5/18 ,  B32B7/02 ,  C08L23/10 ,  B29K23/00

    Abstract: The present invention discloses a process for forming a biaxially oriented film. The process includes first selecting a polyolefin resin wherein said polyolefin resin comprises a linear low density polyethylene resin characterized by having from 9 to 35 weight percent of the total weight of linear low density polyethylene resin eluting from a CEF at a temperature greater than 97.0° C.; and further characterized by having a CDR of from 33 to 80 and a Mw Ratio of from 0.15 to 0.45. Next a film is formed from the polyolefin resin selected in the first step. Finally the film formed in the second step is oriented in a sequential manner. The films produced by this process are characterized by having an ultimate elongation at least 1.5 times greater in the MD as compared to the CD and the 2% secant modulus is a least 1.25 times greater in the CD as compared to the MD. The films are further characterized by having free residual shrinkage of less than 10% in the MD and less than 10% in the CD when exposed to a temperature of 90° C. for 10 minutes.

    CHROMATOGRAPHY OF POLYMERS
    24.
    发明申请
    CHROMATOGRAPHY OF POLYMERS 审中-公开
    聚合物色谱法

    公开(公告)号：US20140090453A1

    公开(公告)日：2014-04-03

    申请号：US14119403

    申请日：2012-06-01

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： Rongjuan Cong ,  Charles M. Cheatham ,  Al Parrott ,  Wallace W. Yau ,  Lonnie G. Hazlitt ,  Zhe Zhou ,  Alexander W. Degroot ,  Matthew D. Miller

    IPC: B01D15/34

    CPC classification number: G01N30/54 ,  B01D15/34 ,  B01J20/0251 ,  B01J20/0259 ,  B01J20/0285 ,  B01J20/286 ,  B01J20/3204 ,  B01J20/3236 ,  B01J2220/42 ,  G01N30/482

    Abstract: The invention provides an apparatus for polymer chromatography, comprising at least one column that comprises a first stationary phase comprising one of the following: A) a material comprising at least one non-carbon atom, excluding glass or a metal, selected from molybdenum sulfide MoS2, tungsten sulfide WS2, silicon carbide SiC, boron nitride BN, or combinations thereof, or B) glass, or a metal, or combinations thereof, and a material comprising at least one non-carbon atom selected from molybdenum sulfide MoS2, tungsten sulfide WS2, silicon carbide SiC, boron nitride BN, or combinations thereof. The invention also provides a method for polymer chromatography, comprising introducing a solution, comprising a polymer, into a liquid flowing through a first stationary phase, and wherein the first stationary phase comprises one of foregoing materials (A) or (B).

    Abstract translation: 本发明提供了一种用于聚合物层析的装置，其包含至少一个柱，其包括第一固定相，其包含以下之一：A）包含至少一个非碳原子的材料，不包括玻璃或金属，选自硫化钼MoS2 ，硫化钨WS2，碳化硅SiC，氮化硼BN或其组合，或B）玻璃或金属或其组合，以及包含至少一种选自硫化钼MoS 2，硫化钨WS2中的非碳原子的材料 ，碳化硅SiC，氮化硼BN或其组合。 本发明还提供了一种用于聚合物色谱法的方法，包括将包含聚合物的溶液引入流过第一固定相的液体中，并且其中所述第一固定相包含前述材料（A）或（B）之一。

    Ethylene/alpha-olefin interpolymer compositions
    26.
    发明授权
    Ethylene/alpha-olefin interpolymer compositions 有权

    公开(公告)号：US11161969B2

    公开(公告)日：2021-11-02

    申请号：US16469773

    申请日：2017-12-06

    Applicant: Dow Global Technologies LLC

    Inventor： Mehmet Demirors ,  Brayden E. Glad ,  Rongjuan Cong

    IPC: C08F210/16 ,  C08L23/08 ,  C08J5/18

    Abstract: Embodiments of the present disclosure are directed ethylene/alpha-olefin interpolymer compositions including a polyethylene and an alpha-olefin comonomer, where the polyethylene is from 70 wt % to 100 wt % of the interpolymer composition based on a total weight of the interpolymer composition and the interpolymer composition is characterized by a Comonomer Distribution Constant (CDC) in a range of from 100 to 500, a vinyl unsaturation of less than 0.15 vinyls per one thousand total carbon atoms present in the interpolymer composition, a zero shear viscosity ratio (ZSVR) in a range from 1.5 to 5, a density in a range of from 0.903 to 0.950 g/cm3, a melt index (I2) in a range of from 0.1 to 15 g/10 minutes, a molecular weight distribution (Mw/Mn) in a range of from 1.8 to 4.5, and a separation index of from 0.50 to 1.10.

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