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    Fluorine-containing polyimide gas separation membrane and method of manufacturing the same
    4.
    发明授权
    Fluorine-containing polyimide gas separation membrane and method of manufacturing the same 失效
    含氟聚酰亚胺气体分离膜及其制造方法

    公开(公告)号：US5817165A

    公开(公告)日：1998-10-06

    申请号：US663509

    申请日：1996-06-13

    申请人： Hisao Hachisuka ,  Masatoshi Maeda ,  Kenichi Ikeda

    发明人： Hisao Hachisuka ,  Masatoshi Maeda ,  Kenichi Ikeda

    IPC分类号： B01D53/22 ,  B01D67/00 ,  B01D71/64 ,  C08G73/10

    CPC分类号： C08G73/1064 ,  B01D53/228 ,  B01D67/0011 ,  B01D67/0013 ,  B01D71/64 ,  C08G73/1039 ,  B01D2323/30 ,  B01D2325/022 ,  B01D2325/026 ,  B01D2325/26 ,  Y10S55/05

    摘要： A fluorine-containing polyimide gas separation membrane which is pinhole-free, uniform over a large area, and has a high permeability and a high separation factor .alpha. is provided. A polyimide resin is dissolved in at least one solvent selected from the group consisting of an organic solvent (A) or (B). The organic solvent (A) has a dielectric constant of 30 or less and a dipole moment of 3.0 D or less. The organic solvent (B) mainly contains an organic solvent having at least one ether bonding in the molecular unit. In the next step, the polyimide resin is dipped in a solvent (C) in order for desolvation. The solvent (C) does not dissolve the fluorine-containing polyimide resin while it is miscible with the organic solvent (A) or (B). As a result, an asymmetric gas separation membrane is formed. The fluorine-containing polyimide resin layer comprises a skin layer the thickness L.sub.1 thereof is about 40 nm and a sponge like layer the thickness L.sub.2 thereof is about 30 .mu.m. The membrane is formed on a supporter of, for example, a nonwoven cloth.

    摘要翻译： 提供了一种无孔无孔，大面积均匀，且具有高透过率和高分离因子α的含氟聚酰亚胺气体分离膜。 将聚酰亚胺树脂溶解在选自有机溶剂（A）或（B）中的至少一种溶剂中。 有机溶剂（A）的介电常数为30以下，偶极矩为3.0​​D以下。 有机溶剂（B）主要含有在分子单元中具有至少一个醚键的有机溶剂。 在下一步骤中，将聚酰亚胺树脂浸渍在溶剂（C）中以进行去溶剂化。 溶剂（C）在与有机溶剂（A）或（B）可混溶时不溶解含氟聚酰亚胺树脂。 结果，形成不对称气体分离膜。 含氟聚酰亚胺树脂层的厚度L1约为40nm，海绵状层的厚度L2约为30μm。 该膜形成在例如非织造布的支撑物上。

    Gas separation method
    5.
    发明授权
    Gas separation method 失效
    气体分离法

    公开(公告)号：US5709733A

    公开(公告)日：1998-01-20

    申请号：US654570

    申请日：1996-05-29

    申请人： Hisao Hachisuka ,  Kenichi Ikeda ,  Kenichi Inoue

    发明人： Hisao Hachisuka ,  Kenichi Ikeda ,  Kenichi Inoue

    IPC分类号： B01D53/22 ,  B01D69/02

    CPC分类号： B01D53/228 ,  B01D2257/504 ,  Y02C10/10

    摘要： A method of separating a gas, especially carbon dioxide, from a gas mixture of the gas and nitrogen at a low temperature of -20.degree. C. to 50.degree. C. using a gas separation membrane permeable to the gas, including the step of cooling the gas mixture using at least one cooling medium selected from the group consisting of liquefied petroleum gas and liquefied natural gas. The liquefied petroleum gas comprises at least one selected from the group consisting of propane gas and butane gas in an amount of more than 50 vol. %. The gas separation membrane has a CO.sub.2 permeation rate of 1.times.10.sup.-4 to 5.times.10.sup.-2 N cm.sup.3 /(cm.sup.2 cm Hg sec) at 25.degree. C. and a CO.sub.2 /N.sub.2 separation factor of 10 to 200 at 25.degree. C.

    摘要翻译： 一种使用可渗透气体的气体分离膜，在-20℃至50℃的低温下将气体，特别是二氧化碳从气体和氮气的气体混合物分离的方法，包括冷却步骤 所述气体混合物使用选自由液化石油气和液化天然气组成的组中的至少一种冷却介质。 液化石油气包含选自丙烷气体和丁烷气体中的至少一种，其量大于50体积％。 ％。 气体分离膜在25℃下的CO 2渗透速率为1×10 -4〜5×10 -2 cm 3 /（cm 2·cm Hg·秒），25℃时的CO 2 / N 2分离系数为10〜200。

    Reverse osmosis composite membrane and reverse osmosis treatment method for water using the same
    6.
    发明授权
    Reverse osmosis composite membrane and reverse osmosis treatment method for water using the same 失效
    反渗透复合膜和反渗透处理方法为水使用相同

    公开(公告)号：US06413425B1

    公开(公告)日：2002-07-02

    申请号：US09055555

    申请日：1998-04-06

    申请人： Hisao Hachisuka ,  Kenichi Ikeda

    发明人： Hisao Hachisuka ,  Kenichi Ikeda

    IPC分类号： B01D7156

    CPC分类号： B01D67/0088 ,  B01D69/00 ,  B01D69/125 ,  B01D71/56 ,  C02F1/441 ,  Y02A20/131

    摘要： A reverse osmosis composite membrane comprises a sponge layer, and a separation layer formed on a surface of the sponge layer, wherein at least one substance selected from the group consisting of an electrically neutral organic substance and an electrically neutral polymer is present in the separation layer or a surface of the separation layer is coated with at least one substance selected from the group consisting of an electrically neutral organic substance and an electrically neutral polymer, and wherein the specific surface area of the layer in which the at least one substance is present or the separation layer before the surface coating is in the range of 2 to 1,000. The reverse osmosis composite membrane has a high salt rejection, a high water permeability, and a high fouling tolerance, and permits practical desalination at a relatively low pressure.

    摘要翻译： 反渗透复合膜包括海绵层和形成在海绵层的表面上的分离层，其中选自电中性有机物质和电中性聚合物的至少一种物质存在于分离层 或者分离层的表面涂覆有选自电中性有机物质和电中性聚合物的至少一种物质，并且其中存在至少一种物质的层的比表面积或 在表面涂布之前的分离层在2至1,000的范围内。 反渗透复合膜具有高的拒水性，高透水性和高的耐污性，并且在相对低的压力下允许实际的脱盐。

    Dope for cast formation and method of manufacturing the same
    7.
    发明授权
    Dope for cast formation and method of manufacturing the same 失效
    用于铸造的涂料及其制造方法

    公开(公告)号：US5750633A

    公开(公告)日：1998-05-12

    申请号：US547439

    申请日：1995-10-24

    申请人： Tomomi Ohara ,  Hisao Hachisuka

    发明人： Tomomi Ohara ,  Hisao Hachisuka

    IPC分类号： B01D67/00 ,  B01D71/64 ,  C08G73/10

    CPC分类号： C08G73/1039 ,  B01D67/0011 ,  B01D69/02 ,  B01D71/64 ,  B01D2323/08 ,  B01D2323/12 ,  B01D2325/022

    摘要： A dope for cast formation comprising a fluorine including polyimide resin and an organic solvent (P) as main components. The fluorine including polyimide resin has at least one --CF.sub.3 group in the repeating molecular unit. The organic solvent (P) is present during the resin polymerization of the fluorine including polyimide resin. The organic solvent (P) is diethylene glycol dimethyl ether.

    摘要翻译： 包括含氟聚酰亚胺树脂和有机溶剂（P）为主要成分的铸造用涂料。 含氟聚酰亚胺树脂在重复分子单元中具有至少一个-CF 3基团。 在含氟聚酰亚胺树脂的树脂聚合期间存在有机溶剂（P）。 有机溶剂（P）是二甘醇二甲醚。

    Composite reverse osmosis membrane having a separation layer with polyvinyl alcohol coating and method of reverse osmotic treatment of water using the same
    8.
    发明授权
    Composite reverse osmosis membrane having a separation layer with polyvinyl alcohol coating and method of reverse osmotic treatment of water using the same 失效
    具有聚乙烯醇涂层分离层的复合反渗透膜和使用其的反渗透处理方法

    公开(公告)号：US06177011B1

    公开(公告)日：2001-01-23

    申请号：US09077768

    申请日：1998-06-03

    申请人： Hisao Hachisuka ,  Kenichi Ikeda

    发明人： Hisao Hachisuka ,  Kenichi Ikeda

    IPC分类号： B01D6102

    CPC分类号： B01D67/0088 ,  B01D69/125 ,  C02F1/441 ,  Y02A20/131

    摘要： A reverse osmosis composite membrane that has a high salt rejection, a high water permeability, and a high fouling tolerance, and permits practical desalination at a relatively low pressure is provided by coating the surface of a reverse osmosis membrane of aromatic polyamide with polyvinyl alcohol (PVA), for example, and controlling the surface zeta potential of the separation layer within±10 mV at pH 6. This reverse osmosis composite membrane is electrically neutral and controls the electrical adsorption of membrane-fouling substances having a charge group present in water. Therefore, a high separation property can be maintained without fouling the membrane even if water containing a surfactant or a transition metal component is supplied as raw water.

    摘要翻译： 通过将芳香族聚酰胺的反渗透膜的表面用聚乙烯醇涂布，提供具有高的耐盐析性，高透水性和高耐污染性并且在相对低的压力下实现脱盐的反渗透复合膜（ PVA），并且在pH6下将分离层的表面ζ电位控制在±10mV内。该反渗透复合膜是电中性的，并且控制具有存在于水中的电荷基团的膜污染物质的电吸附。 因此，即使供给含有表面活性剂或过渡金属成分的水作为原水，也可以保持高分离性，而不会使膜污染。

    Fluorine-containing polyquinazolone polymer and separation membrane using the same
    9.
    发明授权
    Fluorine-containing polyquinazolone polymer and separation membrane using the same 失效
    含氟聚喹唑酮聚合物和使用其的分离膜

    公开(公告)号：US5859182A

    公开(公告)日：1999-01-12

    申请号：US803981

    申请日：1997-02-21

    申请人： Hisao Hachisuka ,  Kenichi Ikeda

    发明人： Hisao Hachisuka ,  Kenichi Ikeda

    IPC分类号： B01D71/62 ,  C08G73/06 ,  C08G73/24

    CPC分类号： C08G73/0694 ,  B01D71/62

    摘要： A fluorine-containing polyquinazolone polymer having a bisquinazolone unit represented by Formula 1 as the repeating unit is used for a gas separation membrane so that great chemical and heat resistance is provided. The membrane also has great permeability and effective separability, as well as excellent mechanical strength. ##STR1## where R.sub.1 indicates a tetravalent organic group, R.sub.2 respectively indicate an alkyl group or an aromatic group, R.sub.3 indicates a divalent organic group, and R.sub.1 and/or R.sub.3 indicates an organic group having at least one fluorine atom.

    摘要翻译： 将由式1表示的双喹唑酮单元作为重复单元的含氟聚喹唑酮聚合物用于气体分离膜，从而提供极好的耐化学性和耐热性。 该膜还具有很好的渗透性和有效的可分离性，以及优异的机械强度。 式1其中R1表示四价有机基团，R2分别表示烷基或芳基，R3表示二价有机基团，R 1和/或R 3表示具有至少一个氟原子的有机基团。