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    LOW COEFFICIENT OF FRICTION ETHYLENE-BASED COMPOSITIONS
    13.
    发明申请
    LOW COEFFICIENT OF FRICTION ETHYLENE-BASED COMPOSITIONS 审中-公开

    公开(公告)号：WO2018226582A1

    公开(公告)日：2018-12-13

    申请号：PCT/US2018/035846

    申请日：2018-06-04

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： SHARMA, Rahul ,  LEE, Jong-Young ,  WEINHOLD, Jeffrey D. ,  KAPUR, Mridula, Babli

    IPC: C08L23/08 ,  B32B27/32

    Abstract: The present disclosure provides a composition containing a polymeric blend. The polymeric blend contains (A) from 50 wt% to 90 wt% of a first ethylene-based polymer having a density from 0.895 g/cc to 0.905 g/cc; and a melt index from 0.1 g/10 min to 50 g/10 min; (B) from 8 wt% to 48 wt% of a second ethylene-based polymer having a density from 0.935 g/cc to 0.967 g/cc; and a melt index from 0.1 g/10 min to 180 g/10 min; and from 0.01 wt% to 2.0 wt% of a slip agent, based on the total weight of the polymeric blend. The polymeric blend has (i) an overall density from 0.900 g/cc to 0.925 g/cc; and (ii) a coefficient of friction (COF) after aging for 1 week at 60°C from 0.001 to 0.400. The present disclosure also provides a multilayer film with a first layer containing the composition.

    IMPROVED METHOD TO MAKE CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES
    14.
    发明申请
    IMPROVED METHOD TO MAKE CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES 审中-公开
    改进的制备碳分子筛空心纤维膜的方法

    公开(公告)号：WO2018089114A1

    公开(公告)日：2018-05-17

    申请号：PCT/US2017/053153

    申请日：2017-09-25

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： XU, Liren ,  SHARMA, Rahul ,  HARRIS, William J. ,  BRAYDEN, Mark M. ,  MARTINEZ, Marcos M.

    IPC: B01D67/00 ,  B01D69/02 ,  B01D71/64 ,  C08G73/10 ,  B01D53/22 ,  B01D69/08 ,  B01D71/02

    Abstract: An asymmetric hollow fiber (CMS) carbon molecular sieve is made by providing a dope solution comprised of a polvimide and a solvent, at a temperature greater than 250°C that is less than the storage modulus at a temperature of 250°C, but no more than ten times less as measured using dynamic mechanical thermal analysis from 250°C to a temperature where the polyimide carbonizes. The polvimide is shaped into a hollow polvimide fiber, the solvent removed and the polyimide hollow fiber is heated to pyroiyze the polvimide and form the asymmetric hollow carbon molecular sieve. The asymmetric hollow fiber carbon molecular sieve has a wall that is defined by an inner surface and outer surface of said fiber and the wall has an inner porous support region extending from the inner surface to an outer raicroporous separation region that extends from the inner porous support region to the outer surface. Surprisingly, when the polyimide has the particular storage modulus characteristics, the method allows for the hollow fiber CMS to be made without any pre- treatmenis or additives to inhibit stractural collapse of the inner microporous region.

    Abstract translation: 通过在大于250℃的温度下提供包含聚酰亚胺和溶剂的掺杂溶液来制备不对称中空纤维（CMS）碳分子筛，所述掺杂溶液的温度大于在250℃下的储能模量 温度为250℃，但使用从250℃到聚酰亚胺碳化的温度的动态机械热分析测量时不超过十倍。 将聚酰亚胺成型为中空聚酰亚胺纤维，除去溶剂，加热聚酰亚胺中空纤维以热解聚酰亚胺并形成不对称中空碳分子筛。 所述不对称中空纤维碳分子筛具有由所述纤维的内表面和外表面限定的壁，并且所述壁具有内部多孔支撑区域，所述内部多孔支撑区域从所述内表面延伸至外部多孔分离区域，所述外部多孔分离区域从所述内部多孔支撑 区域到外表面。 令人惊奇的是，当聚酰亚胺具有特定的储能模量特性时，该方法允许制备中空纤维CMS而不用任何预处理剂或添加剂来抑制内微孔区域的结构破坏。

    ORIENTED FILMS INCLUDING POLYETHYLENE
    16.
    发明公开
    ORIENTED FILMS INCLUDING POLYETHYLENE 审中-公开

    公开(公告)号：EP4484156A1

    公开(公告)日：2025-01-01

    申请号：EP23382649.4

    申请日：2023-06-26

    Applicant: Dow Global Technologies LLC

    Inventor： HILL, Martin Keith ,  SHARMA, Rahul

    IPC: B32B7/02 ,  B32B27/08 ,  B32B27/30 ,  B32B27/32

    Abstract: Provided are oriented films and a process for making oriented films. The process for making the oriented film according to embodiments disclosed herein includes providing a low density polyethylene and an ethylene based copolymer, extruding the low density polyethylene in a first outer layer and the ethylene copolymer in an inner layer to form a multilayer film, and orienting the film to obtain a specific thickness in the first outer layer. The resulting oriented film can provide desirable properties such as heat seal initiation temperature and recyclability, among others.

    IMPROVED METHOD TO MAKE CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES
    17.
    发明公开
    IMPROVED METHOD TO MAKE CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES 审中-公开

    公开(公告)号：EP4070880A1

    公开(公告)日：2022-10-12

    申请号：EP22176998.7

    申请日：2017-09-25

    Applicant: Dow Global Technologies LLC

    Inventor： XU, Liren ,  SHARMA, Rahul ,  HARRIS, William J ,  BRAYDEN, Mark M ,  MARTINEZ, Marcos V

    IPC: B01D67/00 ,  B01D69/02 ,  B01D71/64 ,  C08G73/10 ,  B01D53/22 ,  B01D69/08 ,  B01D71/02

    Abstract: An asymmetric hollow fiber (CMS) carbon molecular sieve is made by providing a dope solution comprised of a polyimide and a solvent, at a temperature greater than 250°C that is less than the storage modulus at a temperature of 250°C, but no more than ten times less as measured using dynamic mechanical thermal analysis from 250°C to a temperature where the polyimide carbonizes. The polyimide is shaped into a hollow polyimide fiber, the solvent removed and the polyimide hollow fiber is heated to pyrolyze the polyimide and form the asymmetric hollow carbon molecular sieve. The asymmetric hollow fiber carbon molecular sieve has a wall that is defined by an inner surface and outer surface of said fiber and the wall has an inner porous support region extending from the inner surface to an outer microporous separation region that extends from the inner porous support region to the outer surface. Surprisingly, when the polyimide has the particular storage modulus characteristics, the method allows for the hollow fiber CMS to be made without any pretreatments or additives to inhibit structural collapse of the inner microporous region.

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