Vinylidene chloride copolymer-based carbon molecular sieve adsorbent compositions and processes therefor

    公开(公告)号:US10239043B2

    公开(公告)日:2019-03-26

    申请号:US15320334

    申请日:2015-06-22

    摘要: Novel carbon molecular sieve (CMS) compositions comprising carbonized vinylidene chloride copolymer having micropores with an average micropore size ranging from 3.0 to 5.0. These materials offer capability in separations of gas mixtures including, for example, propane/propylene; nitrogen/methane; and ethane/ethylene. Such may be prepared by a process wherein vinylidene chloride copolymer beads, melt extruded film or fiber are pretreated to form a precursor that is finally carbonized at high temperature. Preselection or knowledge of precursor crystallinity and attained maximum pyrolysis temperature enables preselection or knowledge of a average micropore size, according to the equation ?=6.09+(0.0275×C)−(0.00233×T), wherein ? is the average micropore size in Angstroms, C is the crystallinity percentage and T is the attained maximum pyrolysis temperature in degrees Celsius, provided that crystallinity percentage ranges from 25 to 75 and temperature in degrees Celsius ranges from 800 to 1700. The beads, fibers or film may be ground, post-pyrolysis, and combined with a non-coating binder to form extruded pellets, or alternatively the fibers may be woven, either before or after pre-treatment, to form a woven fiber sheet which is thereafter pyrolyzed to form a woven fiber adsorbent.

    BARRIER FILM, METHODS OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME
    13.
    发明申请
    BARRIER FILM, METHODS OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME 审中-公开
    遮瑕膜,其制造方法和包含其的制品

    公开(公告)号:US20150376450A1

    公开(公告)日:2015-12-31

    申请号:US14316875

    申请日:2014-06-27

    IPC分类号: C09D179/02 C09D133/02

    摘要: Disclosed herein is a barrier film comprising at least two substrates each comprising a first surface and a second surface; where the first surface and the second surface are opposedly disposed to each other; the second surfaces of each substrates being in direct contact with each other; where the second surfaces do not contact a barrier coating; and a barrier coating comprising alternating layers of cationic material and anionic material; where the barrier coating is adhesively bonded with the first surfaces of each substrate.

    摘要翻译: 本文公开了一种阻挡膜,其包括至少两个基板,每个基板包括第一表面和第二表面; 其中所述第一表面和所述第二表面彼此相对设置; 每个基板的第二表面彼此直接接触; 其中第二表面不接触阻挡涂层; 以及包含交替层的阳离子材料和阴离子材料的阻隔涂层; 其中阻挡涂层与每个基底的第一表面粘合。

    VINYLIDENE CHLORIDE POLYMER COMPOSITIONS AND ARTICLES COMPRISING THE SAME

    公开(公告)号:US20200048448A1

    公开(公告)日:2020-02-13

    申请号:US15738866

    申请日:2016-08-17

    摘要: The present invention relates generally to vinylidene chloride polymer compositions. In one embodiment, a vinylidene chloride polymer composition comprises (a) a vinylidene chloride polymer formed from a monomer mixture comprising from 60 to 99 weight percent vinylidene chloride monomer and from 40 to 1 weight percent of a monoethylenically unsaturated monomer copolymerizable therewith; (b) 0.3 to 5 weight percent of an acrylic polymer based on the total weight of the polymer composition; and (c) 0.2 to 7 weight percent of at least one additive comprising (i) at least one wax in an amount of from 0.01 to 2 weight percent based on the total weight of the polymer composition, (ii) at least one polyethylene having a density greater than 0.940 g/cm3 in an amount of from 0.1 to 5 weight percent based on the total weight of the polymer composition, or combinations thereof.

    SEPARATION OF GASES VIA CARBONIZED VINYLIDENE CHLORIDE COPOLYMER GAS SEPARATION MEMBRANES AND PROCESSES THEREFOR

    公开(公告)号:US20190083939A1

    公开(公告)日:2019-03-21

    申请号:US16085039

    申请日:2017-03-14

    摘要: A carbonized PVDC copolymer useful for the separation of an olefin from its corresponding paraffin may be made by heating a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 20 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C. A process for separating an olefin from its corresponding paraffin in a gas mixture is comprised of flowing the gas mixture through the aforementioned carbonized polyvinylidene chloride (PVDC) copolymer to produce a permeate first stream having an increased concentration of the olefin and a second retentate stream having an increased concentration of its corresponding paraffin.

    SEPARATION OF GASES VIA CARBONIZED VINYLIDENE CHLORIDE COPOLYMER GAS SEPARATION MEMBRANES AND PROCESSES THEREFOR

    公开(公告)号:US20190076793A1

    公开(公告)日:2019-03-14

    申请号:US16085038

    申请日:2017-03-14

    摘要: A process for separating hydrogen from a gas mixture having hydrogen and a larger gas molecule is comprised of flowing the gas mixture through a carbonized polyvinylidene chloride (PVDC) copolymer membrane having a hydrogen permeance in combination with a hydrogen/methane selectivity, wherein the combination of hydrogen permeance and hydrogen/methane selectivity is (i) at least 30 GPU hydrogen permeance and at least 200 hydrogen/methane selectivity or (ii) at least 10 GPU hydrogen permeance and at least 700 hydrogen/methane selectivity. The carbonized PVDC copolymer may be made by heating and restraining a polyvinylidene chloride copolymer film or hollow fiber having a thickness of 1 micrometer to 250 micrometers to a pretreatment temperature of 100° C. to 180° C. to form a pretreated polyvinylidene chloride copolymer film and then heating and restraining the pretreated polyvinylidene chloride copolymer film to a maximum pyrolysis temperature from 350° C. to 750° C.

    PROCESS TO PRODUCE A VINYLIDENE CHLORIDE-BASED HETEROPOLYMER
    18.
    发明申请
    PROCESS TO PRODUCE A VINYLIDENE CHLORIDE-BASED HETEROPOLYMER 审中-公开
    制备乙烯基氯化物基异丁烯酸酯的方法

    公开(公告)号:US20160272785A1

    公开(公告)日:2016-09-22

    申请号:US15034671

    申请日:2014-10-14

    IPC分类号: C08K5/45 C08L27/08

    摘要: A process to prepare a vinylidene chloride heteropolymer comprising copolymerizing vinylidene chloride with at least one comonomer selected from the group consisting of alkyl acrylates, non-vinylidene chloride vinyl monomers and combinations thereof in the presence of an indicator, wherein the indicator is soluble in vinylidene chloride, the at least one comonomer, or a mixture of the vinylidene chloride and the at least one comonomer is provided.

    摘要翻译: 一种制备偏二氯乙烯杂聚物的方法,包括在指示剂存在下使偏二氯乙烯与至少一种选自丙烯酸烷基酯,非偏二氯乙烯乙烯基单体及其组合的共聚单体共聚,其中指示剂可溶于偏二氯乙烯 ,提供至少一种共聚单体,或偏二氯乙烯和至少一种共聚单体的混合物。

    BARRIER FILM, METHODS OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME
    19.
    发明申请
    BARRIER FILM, METHODS OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME 审中-公开
    遮瑕膜,其制造方法和包含其的制品

    公开(公告)号:US20150376449A1

    公开(公告)日:2015-12-31

    申请号:US14316872

    申请日:2014-06-27

    IPC分类号: C09D179/02 C09D133/02

    摘要: Disclosed herein is a barrier film comprising a substrate comprising a first surface and a second surface; where the first surface and the second surface are opposedly disposed to each other; and a barrier coating comprising alternating layers of cationic material and anionic material; where the barrier coating is reactively bonded with at least the first surface of the substrate. Disclosed herein too is a method comprising disposing upon a substrate a barrier coating comprising alternating layers of cationic material and anionic material; where the barrier coating is reactively bonded with at least one surface of the substrate.

    摘要翻译: 本文公开了一种阻挡膜,其包括包括第一表面和第二表面的基底; 其中所述第一表面和所述第二表面彼此相对设置; 以及包含交替层的阳离子材料和阴离子材料的阻隔涂层; 其中阻挡涂层至少与基底的第一表面反应地结合。 本文还公开了一种方法,其包括在基材上设置包含交替层的阳离子材料和阴离子材料的阻隔涂层; 其中阻挡涂层与基底的至少一个表面反应地结合。