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    APPARATUS AND METHOD FOR GRANULATING LOW VISCOSITY MATERIALS
    1.
    发明申请
    APPARATUS AND METHOD FOR GRANULATING LOW VISCOSITY MATERIALS 审中-公开

    公开(公告)号：WO2020046936A1

    公开(公告)日：2020-03-05

    申请号：PCT/US2019/048344

    申请日：2019-08-27

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： BAWISKAR, Santosh S. ,  ZOGG JR., Michael J. ,  LI, Guang Ming ,  JIN, Yi ,  SCHILHAB, Lonnie

    IPC: B29B9/10 ,  B01J2/26 ,  C08F2/01 ,  C08F10/06

    Abstract: An apparatus to batch or continuously form solid polymer particles, the apparatus comprising the following components: A) at least one pastillation unit comprising a pastillation head, said unit used to form discrete molten polymer particles from a polymer melt; B) a moving belt to receive and transfer the discrete molten polymer particles from the pastillation head; C) a means to transfer water onto the moving belt, such that the water comes into contact with the discrete molten polymer particles on the moving belt to form the solid polymer particles; and wherein the water of component C is sprayed onto the discrete molten polymer particles, such that the ratio of "the rate of water spray" to "the discharge rate" is ≥ 3.0; and wherein the belt residence time is ≤ 50 seconds.

    CONTROLLED LONG CHAIN BRANCHING IN EPDM BY POST-REACTOR MODIFICATION
    2.
    发明申请
    CONTROLLED LONG CHAIN BRANCHING IN EPDM BY POST-REACTOR MODIFICATION 审中-公开

    公开(公告)号：WO2020263681A1

    公开(公告)日：2020-12-30

    申请号：PCT/US2020/038468

    申请日：2020-06-18

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： BAWISKAR, Santosh S. ,  LI, Guang Ming ,  HUANG, Tianzi

    IPC: C08F210/18 ,  C08J3/28

    Abstract: The present disclosure provides a process. In an embodiment, the process includes providing a neat ethylene/propylene/non-conjugated polyene terpolymer (n-terpolymer) having a Mooney viscosity (ML (1 +4) at 125C) less than 100 Mooney units (MU). The process includes exposing the n-terpolymer to electron beam radiation at a dosage from 0.2 megaRad (MRad) to 1.3 MRad. The process includes forming a branched ethylene/propylene/non-conjugated polyene terpolymer (b-terpolymer) having a Mooney viscosity ML (1 +4) at 125C from 25 MU to 135 MU.

    A POLYMERIC BLEND COMPOSITION
    5.
    发明申请
    A POLYMERIC BLEND COMPOSITION 审中-公开
    聚合混合组合物

    公开(公告)号：WO2015042820A1

    公开(公告)日：2015-04-02

    申请号：PCT/CN2013/084292

    申请日：2013-09-26

    Applicant: DOW GLOBAL TECHNOLOGIES LLC ,  WEAVER, Laura B. ,  WANG, David ,  LI, Guang Ming ,  NGUYEN, Lena T.

    Inventor： WEAVER, Laura B. ,  WANG, David ,  LI, Guang Ming ,  NGUYEN, Lena T.

    IPC: C08L23/06 ,  C08L23/16 ,  C08L31/06

    CPC classification number: C08L23/142 ,  C08J5/18 ,  C08J2323/08 ,  C08J2323/14 ,  C08J2423/08 ,  C08J2423/14 ,  C08L23/0815 ,  C08L23/0853 ,  C08L23/14 ,  C08L23/16 ,  C08L23/0807

    Abstract: The instant invention provides a polymeric blend composition, injection molded articles, films and sheets made therefrom. The polymeric blend composition according to the present invention comprises: (a) a first component selected from the group consisting of an ethylene/alpha-olefin copolymer and a propylene/ethylene copolymer; wherein said ethylene/alpha-olefin copolymer has density in the range of from 0.857 to 0.902 g/cm 3 , a melt index (I 2 ) in the range of from 0.5 to 30 g/10 minutes, a DCS melting point temperature (second heat) in the range of from 40 to 99˚C, a heat of fusion in the range of from 18 to 108 Jg -1 , and a crystallinity in the range of from 6 to 37 weight percent; and wherein propylene/ethylene copolymer has a melt flow rate in the range of from 1 to 30 g/10 minutes, a DCS melting point temperature (second heat) in the range of from 55 to 85˚C, a heat of fusion in the range of from 10 to 40 Jg -1 , and a crystallinity in the range of from 6 to 21 weight percent; and (b) less than 40 percent by weight of a second component comprising an ethylene vinyl acetate copolymer comprising from 9 to 40 percent by weight of units derived from vinyl acetate, and wherein said ethylene vinyl acetate copolymer has a melt index (I 2 ) in the range of from 0.2 to 20 g/10 minutes; wherein Δ n is less than 0.003, and wherein Δ n is the absolute value of the difference between the refractive index of (a) and (b); and wherein dielectric loss factor of the polymeric blend composition is greater than 0.024, for example in the range of greater than 0.024 to 0.15.

    Abstract translation: 本发明提供了一种聚合共混组合物，由其制成的注塑制品，薄膜和薄片。 根据本发明的聚合物共混物组合物包含：（a）选自乙烯/α-烯烃共聚物和丙烯/乙烯共聚物的第一组分; 其中所述乙烯/α-烯烃共聚物的密度范围为0.857-0.902g / cm3，熔体指数（I 2）为0.5-30g / 10分钟，DCS熔点温度（第二次加热） 在40至99℃的范围内，熔化热范围为18至108Jg-1，结晶度为6至37重量％; 丙烯/乙烯共聚物的熔体流动速率为1〜30g / 10分钟，DCS熔点温度（第2次加热）为55〜85℃，熔融温度为 范围为10至40Jg-1，结晶度为6至21重量％; 和（b）小于40重量％的包含乙烯乙酸乙烯酯共聚物的第二组分，其包含9至40重量％的衍生自乙酸乙烯酯的单元，并且其中所述乙烯 - 乙酸乙烯酯共聚物的熔体指数（I 2）为 范围为0.2〜20g / 10分钟; 其中＆Dgr; n小于0.003，并且其中＆Dgr; n是（a）和（b）的折射率之间的差的绝对值; 并且其中所述聚合物共混组合物的介电损耗因子大于0.024，例如在大于0.024至0.15的范围内。

    HIGH FREQUENCY WELDABLE POLYOLEFIN COMPOSITIONS INCLUDING POLAR POLYMERS
    6.
    发明申请
    HIGH FREQUENCY WELDABLE POLYOLEFIN COMPOSITIONS INCLUDING POLAR POLYMERS 审中-公开
    高频焊接聚烯烃组合物，包括极性聚合物

    公开(公告)号：WO2013096711A1

    公开(公告)日：2013-06-27

    申请号：PCT/US2012/071110

    申请日：2012-12-21

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： WEAVER, Laura Bauerle ,  HU, Yushan ,  REGO, Jose M. ,  LI, Guang Ming ,  DANIEL, Sherrika D. ,  WALTON, Kim L.

    IPC: C08L23/08 ,  C08L23/14

    CPC classification number: C08L23/14 ,  B29C65/14 ,  C08L23/0815 ,  C08L23/0853 ,  C08L23/0869 ,  C08L23/142 ,  C08L23/20 ,  C08L2205/02 ,  C08L2314/06

    Abstract: A polyolefin-based composition showing improved weldability using high frequency(HF) includes (1) a base polymer selected from (a) a homogeneously branched, linear or substantially linear ethylene/α-olefin copolymer; (b) a homogeneously branched propylene/α-olefin copolymer; or (c) a combination thereof; and (2) at least one secondary component selected from (a) an ethylene vinyl acetate copolymer having from 5 to 40 wt% vinyl acetate; (b) an ethylene-ethyl acrylate having from 5 to 25 wt% ethyl acrylate; and (c) a combination thereof. The combination of the specified polyolefin with the specified secondary component, which is a polar polymer, makes these formulations HF weldable, with a cohesive welding failure, a weld strength for 10 mil thick film greater than 7 lb/in (1.23 N/mm) at a weld time of less than or equal to 6 seconds. The formulations may also exhibit good calendering processability and mechanical properties.

    Abstract translation: 使用高频（HF）显示改善的焊接性的聚烯烃基组合物包括（1）选自（a）均匀支化的，直链的或基本上线性的乙烯/α-烯烃共聚物的基础聚合物; （b）均匀支化的丙烯/α-烯烃共聚物; 或（c）其组合; 和（2）至少一种选自（a）乙烯 - 乙酸乙烯酯共聚物的次要组分，其具有5至40重量％的乙酸乙烯酯; （b）具有5至25重量％丙烯酸乙酯的乙烯 - 丙烯酸乙酯; 和（c）其组合。 指定的聚烯烃与作为极性聚合物的规定的次要组分的组合使得这些配方HF可焊接，具有内聚焊接故障，10密耳厚膜的焊接强度大于7lb / in（1.23N / mm） 在焊接时间小于或等于6秒。 制剂还可以表现出良好的压延加工性能和机械性能。

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