公开(公告)号：US5749943A

公开(公告)日：1998-05-12

申请号：US605357

申请日：1996-02-22

申请人： Akira Shimazu ,  Kenichi Ikeda ,  Hisao Hachisuka

发明人： Akira Shimazu ,  Kenichi Ikeda ,  Hisao Hachisuka

IPC分类号： B01D53/22 ,  B01D71/64 ,  C10G31/11

CPC分类号： B01D53/228 ,  B01D71/64 ,  C10G31/11

摘要： A homogeneous membrane or an asymmetric membrane which is made of polyimide resin containing fluorine as a main component and has high separation and permeation properties, is used in a method of separating unsaturated hydrocarbon from a mixture of unsaturated and saturated hydrocarbon. The method includes the steps of contacting the mixture onto the membrane made of the polyimide resin having a repeating unit shown in the following formula as a main component, selectively permeating unsaturated hydrocarbon through the membrane, and separating unsaturated hydrocarbon from the mixture. The membrane satisfies the condition of a solubility coefficient ratio between unsaturated and saturated hydrocarbon.gtoreq.1.2 at 25.degree. C. and more than 50 Torr when the absorption of hydrocarbon to the polyimide resin is in equilibrium. ##STR1##

摘要翻译： 在不饱和烃与不饱和烃的混合物中分离不饱和烃的方法中，使用以氟为主要成分并具有高分离和渗透性能的聚酰亚胺树脂制成的均质膜或不对称膜。 该方法包括以下步骤：将混合物与由下式重复单元组成的聚酰亚胺树脂膜作为主要成分接触，并通过膜选择性渗透不饱和烃，并从混合物中分离出不饱和烃。 当烃与聚酰亚胺树脂的吸收平衡时，该膜满足25℃时不饱和烃和饱和烃之间的溶解度系数比>> = = 1.2的条件。 化学式 + TR

公开(公告)号：US5647894A

公开(公告)日：1997-07-15

申请号：US478519

申请日：1995-06-07

申请人： Tomomi Ohara ,  Hisao Hachisuka ,  Ping Xu ,  Akira Shimazu ,  Kenichi Ikeda

发明人： Tomomi Ohara ,  Hisao Hachisuka ,  Ping Xu ,  Akira Shimazu ,  Kenichi Ikeda

IPC分类号： B01D53/22 ,  B01D69/12 ,  B01D71/64

CPC分类号： B01D71/64 ,  B01D53/228 ,  B01D69/12 ,  Y10S55/05

摘要： A gas separating composite membrane comprising two types of polyimide resin layers having different molecular structures and each having solubility in an organic solvent different from each other, the two layers being laminated being substantially independent or via a mixed layer, the first polyimide resin layer comprising a porous polyimide supporting membrane having a nitrogen gas permeation flux density at 25.degree. C. of at least 2 Nm.sup.3 /m.sup.2 /h/atm., and the second polyimide resin layer, which contributes to a gas separating performance comprising a fluorine-containing polyimide thin film containing at least three fluorine atoms in a repeating molecular structure unit which constructs the second polyimide resin layer has a very high gas permeation flux density while maintaining a high gas permeability, excels in heat resistance and chemical resistance, and satisfies a practical use in terms of cost.

摘要翻译： 一种气体分离复合膜，包括具有不同分子结构且各自具有彼此不同的有机溶剂中的溶解性的两种类型的聚酰亚胺树脂层，所述两层基本上独立地层叠或经由混合层，所述第一聚酰亚胺树脂层包含 在25℃下的氮气渗透通量密度为至少2Nm 3 / m 2 / h / atm的多孔聚酰亚胺支撑膜和第二聚酰亚胺树脂层，其有助于包含含氟聚酰亚胺薄片的气体分离性能 在构成第二聚酰亚胺树脂层的重复分子结构单元中含有至少三个氟原子的膜具有非常高的气体渗透通量密度，同时保持高的透气性，优异的耐热性和耐化学性，并且满足实际应用 的成本。

公开(公告)号：US6026968A

公开(公告)日：2000-02-22

申请号：US855336

申请日：1997-05-13

申请人： Hisao Hachisuka ,  Kenichi Ikeda

发明人： Hisao Hachisuka ,  Kenichi Ikeda

IPC分类号： B01D67/00 ,  B01D69/12 ,  B01D71/56 ,  B01D71/68 ,  B01D29/00

CPC分类号： B01D67/0088 ,  B01D69/12 ,  B01D69/125 ,  B01D71/56 ,  B01D71/68

摘要： A reverse osmosis composite membrane comprising at least a porous support membrane layer and a separation layer, wherein a water-insoluble polymer layer having an anionic hydrophilic group formed on the surface of the separation layer is provided. Therefore, it has high anion property, high salt rejection, high water permeability, and chlorine tolerance, and can perform practical desalination under relatively low pressure.

摘要翻译： 一种反渗透复合膜，其至少具有多孔性支持膜层和分离层，其中，在所述分离层的表面形成有具有阴离子性亲水基团的水不溶性聚合物层。 因此，具有高阴离子性，高脱盐性，高透水性和耐氯性，可在相对较低的压力下进行实用的脱盐。

公开(公告)号：US5910357A

公开(公告)日：1999-06-08

申请号：US889761

申请日：1997-07-10

申请人： Hisao Hachisuka ,  Yoshihiko Kondo ,  Kenichi Ikeda ,  Hitoshi Takano ,  Amane Mochizuki

发明人： Hisao Hachisuka ,  Yoshihiko Kondo ,  Kenichi Ikeda ,  Hitoshi Takano ,  Amane Mochizuki

IPC分类号： B01D39/16 ,  B01D69/02 ,  B01D71/54 ,  B01D39/00 ,  B01D39/14

CPC分类号： B01D69/02 ,  B01D39/1692 ,  B01D71/54 ,  Y10T428/249978

摘要： A separation membrane and a method of producing the membrane are provided. The membrane can control its permselectivity and its fouled pores can be easily washed by using the reversible shape change of the membrane. For this purpose, porous shape memory polymers are used for the separation membrane.

摘要翻译： 提供分离膜和制造膜的方法。 膜可以控制其选择性，并且可以通过使用膜的可逆形状来容易地洗涤其污染的孔。 为此，多孔形状记忆聚合物用于分离膜。

公开(公告)号：US5811196A

公开(公告)日：1998-09-22

申请号：US803982

申请日：1997-02-21

申请人： Hisao Hachisuka ,  Kenichi Ikeda

发明人： Hisao Hachisuka ,  Kenichi Ikeda

IPC分类号： B01D69/12 ,  B01D71/64 ,  B01D71/70 ,  C08G73/10 ,  C08G77/04 ,  D06N3/18 ,  D06N7/00 ,  B32B27/00

CPC分类号： B01D71/64 ,  B01D69/12 ,  Y10T428/31507 ,  Y10T428/31511 ,  Y10T428/31533 ,  Y10T428/3154 ,  Y10T428/31721 ,  Y10T428/31725

摘要： A laminated asymmetric membrane comprising first and second asymmetric membranes having different molecular structures, in which the first and second asymmetric membranes are laminated. Consequently, the laminated asymmetric membrane having the excellent property of the separation and permeability can be provided at a low cost. The laminated asymmetric membranes of the present invention is manufactured by the following steps: a film-forming dope (1) was prepared by synthesizing fluorine-containing polyimide having a repeating unit expressed by the following Chemical Formula by using diethylene glycol dimethyl ether as a solvent; a film-forming dope (2) was prepared by dissolving polysulfone in diethylene glycol dimethyl ether; the dope (2) from the resulted two dopes was cast on a polyester nonwoven cloth to a thickness of approximately 50 .mu.m by means of an applicator; the dope (1) was lap coated thereon to a thickness of 30 .mu.m; the dope (2) on which the dope (1) is coated was dipped in water as a solidifying solution at a temperature of 25.degree. C. for 5 minutes and in a water at a temperature of 20.degree. C. for one hour, thus forming a laminated asymmetric membrane. Chemical Formula ##STR1##

摘要翻译： 一种层压的不对称膜，包括具有不同分子结构的第一和第二不对称膜，其中层压第一和第二不对称膜。 因此，可以以低成本提供具有优异的分离性和渗透性的层压不对称膜。 本发明的层压非对称膜通过以下步骤制造：通过使用二甘醇二甲醚作为溶剂合成具有由以下化学式表示的重复单元的含氟聚酰亚胺来制备成膜原液（1） ; 通过将聚砜溶解在二甘醇二甲醚中制备成膜原液（2）; 将所得到的两种涂料的涂料（2）通过涂布器浇铸在聚酯无纺布上至约50μm的厚度; 将涂布液（1）在其上铺上厚度为30μm; 将涂布液（1）的涂布液（2）作为固化液在25℃的温度下浸渍5分钟，在20℃的水中浸渍1小时， 形成层压不对称膜。 化学式 + TR

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。

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。

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。

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。

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。