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    • 1. 发明授权
    • Highly permeable composite reverse osmosis membrane, method of producing
the same
    • 高透性复合反渗透膜,其生产方法
    • US5843351A
    • 1998-12-01
    • US702383
    • 1996-08-14
    • Masahiko HiroseHiroki ItoMasatoshi MaedaKazuo Tanaka
    • Masahiko HiroseHiroki ItoMasatoshi MaedaKazuo Tanaka
    • B01D61/02B01D67/00B01D69/00B01D69/12B29D33/48
    • B01D67/0088B01D61/022B01D69/00B01D69/12B01D69/125
    • This invention provides a composite reverse osmosis membrane having a polyamide type skin layer whose average surface roughness is at least 55 nm, and the polyamide type skin layer comprises the reaction product of a compound having amino groups and polyfunctional acid halide compound having acid halide groups. The composite reverse osmosis membrane of this invention is superior in salt rejection and water permeability. A polymer film is formed on a supporting film by contacting a solution containing e.g., m-phenylenediamine with a porous polysulfone supporting film so as to form a layer of the solution on the supporting film, then contacting the film with a solution of trimesic acid chloride and holding the film in a hot air dryer so that a polymer film is formed on the supporting film. The surface of the polyamide type skin layer can also be treated with quaternary ammonium salt and coated with a crosslinked layer of an organic polymer having positively-charged groups. Raw liquid is transmitted from a raw liquid tank to a membrane module for the first stage through a first transmission pump, and the first stage of reverse osmosis treatment is carried out. The composite reverse osmosis membrane coated with the crosslinked layer is used when another reverse osmosis treatment is carried out by using another membrane module for the second stage.
    • 本发明提供一种具有平均表面粗糙度为55nm以上的聚酰胺型表层的复合反渗透膜,聚酰胺型表皮层包含具有氨基的化合物与具有酰卤基的多官能酰卤化合物的反应产物。 本发明的复合反渗透膜的耐盐析性和透水性优异。 通过使含有例如间苯二胺的溶液与多孔聚砜负载膜接触,在支持膜上形成聚合物膜,以在支撑膜上形成溶液层,然后将该膜与均苯三甲酸 并将膜保持在热空气干燥器中,使得在支撑膜上形成聚合物膜。 聚酰胺型表皮层的表面也可以用季铵盐处理,并涂布有具有带正电荷基团的有机聚合物的交联层。 原料液体通过第一传动泵从原液槽传送到第一级的膜组件,并进行第一阶段的反渗透处理。 当通过使用用于第二阶段的另一个膜组件进行另一个反渗透处理时,使用涂覆有交联层的复合反渗透膜。
    • 2. 发明授权
    • Highly permeable composite reverse osmosis membrane, method of producing
the same, and method of using the same
    • 高透性复合反渗透膜及其制造方法及其使用方法
    • US5614099A
    • 1997-03-25
    • US572900
    • 1995-12-18
    • Masahiko HiroseHiroki ItoMasatoshi MaedaKazuo Tanaka
    • Masahiko HiroseHiroki ItoMasatoshi MaedaKazuo Tanaka
    • B01D61/02B01D67/00B01D69/00B01D69/12B01D61/00
    • B01D67/0088B01D61/022B01D69/00B01D69/12B01D69/125
    • This invention provides a composite reverse osmosis membrane having a polyamide type skin layer whose average surface roughness is at least 55 nm, and the polyamide type skin layer comprises the reaction product of a compound having amino groups and polyfunctional acid halide compound having acid halide groups. The composite reverse osmosis membrane of this invention is superior in salt rejection and water permeability. A polymer film is formed on a supporting film by contacting a solution containing e.g., m-phenylenediamine with a porous polysulfone supporting film so as to form a layer of the solution on the supporting film, then contacting the film with a solution of trimesic acid chloride and holding the film in a hot air dryer so that a polymer film is formed on the supporting film. The surface of the polyamide type skin layer can also be treated with quaternary ammonium salt and coated with a crosslinked layer of an organic polymer having positively-charged groups. Raw liquid is transmitted from a raw liquid tank to a membrane module for the first stage through a first transmission pump, and the first stage of reverse osmosis treatment is carried out. The composite reverse osmosis membrane coated with the crosslinked layer is used when another reverse osmosis treatment is carried out by using another membrane module for the second stage.
    • 本发明提供一种具有平均表面粗糙度为55nm以上的聚酰胺型表层的复合反渗透膜,聚酰胺型表皮层包含具有氨基的化合物与具有酰卤基的多官能酰卤化合物的反应产物。 本发明的复合反渗透膜的耐盐析性和透水性优异。 通过使含有例如间苯二胺的溶液与多孔聚砜负载膜接触,在支撑膜上形成聚合物膜,以在支撑膜上形成溶液层,然后将该膜与均苯三甲酸 并将膜保持在热空气干燥器中,使得在支撑膜上形成聚合物膜。 聚酰胺型表皮层的表面也可以用季铵盐处理,并涂布有具有带正电荷基团的有机聚合物的交联层。 原料液体通过第一传动泵从原液槽传送到第一级的膜组件,并进行第一阶段的反渗透处理。 当通过使用用于第二阶段的另一个膜组件进行另一个反渗透处理时,使用涂覆有交联层的复合反渗透膜。
    • 3. 发明授权
    • Osmosis membrane
    • 渗透膜
    • US5989426A
    • 1999-11-23
    • US677322
    • 1996-07-02
    • Masahiko HiroseHiroki ItoKazuo Tanaka
    • Masahiko HiroseHiroki ItoKazuo Tanaka
    • B01D61/02B01D67/00B01D69/00B01D69/12B01D29/00B01D63/00B01D61/00
    • B01D67/0088B01D61/022B01D69/00B01D69/12B01D69/125
    • A composite reverse osmosis membrane has a polyamide type skin layer whose specific surface area ranges from 3 to 1000. The composite reverse osmosis membrane of this invention is superior in the salt rejection property and water permeability. The composite reverse osmosis membrane comprises a negatively-charged crosslinked polyamide type skin layer obtained by reacting a compound having polyfunctional amino groups and a polyfunctional acid halide compound having polyfunctional acid halide groups, and a microporous support to support the skin layer. The specific surface area of the skin layer is at least 3. A first stage of reverse osmosis treatment is carried out in a membrane module using this composite reverse osmosis membrane. The skin layer can be coated with a layer of an organic polymer having positively-charged groups e.g. polyethyleneimine in order to be used as another membrane module. The organic polymer of this case is crosslinked, for example, by glutaraldehyde. The layer which is crosslink-coated on its surface area is a composite reverse osmosis membrane excellent in desalination of mineral salt in a low-concentration region and removal of cationic organic materials.
    • 复合反渗透膜具有比表面积为3〜1000的聚酰胺型表皮层。本发明的复合反渗透膜的耐盐析性和透水性优异。 复合反渗透膜包括通过使具有多官能氨基的化合物和具有多官能酰卤基团的多官能酰卤化合物和微孔载体反应获得的带负电荷的交联聚酰胺型表皮层,以支撑皮肤层。 表皮层的比表面积为至少3.在使用该复合反渗透膜的膜组件中进行第一阶段的反渗透处理。 表皮层可以涂覆有一层具有带正电荷的基团的有机聚合物,例如, 聚乙烯亚胺以便用作另一个膜组件。 这种情况下的有机聚合物例如用戊二醛交联。 在其表面积上交联涂层是在低浓度区域脱盐矿物盐和去除阳离子有机物质的复合反渗透膜。
    • 4. 发明授权
    • Highly permeable composite reverse osmosis membrane and a reverse
osmosis membrane module using the same
    • 高透性复合反渗透膜和使用其的反渗透膜组件
    • US6024873A
    • 2000-02-15
    • US819326
    • 1997-03-18
    • Masahiko HiroseHiroki ItoTomomi Ohara
    • Masahiko HiroseHiroki ItoTomomi Ohara
    • B01D61/02B01D69/12B01D71/64B01D29/00
    • B01D69/125
    • The present invention provides a composite reverse osmosis membrane and a reverse osmosis membrane module using the same, having a high salt rejection, high water permeability, and a high rejection of organic substances such as isopropyl alcohol, which can be used to remove organic substances as well as ionic substances with suitable efficiency and economy. The highly permeable composite reverse osmosis membrane of the invention can be produced by adding alcohols or ethers or the like having a solubility parameter of 8-14 (cal/cm.sup.3).sup.1/2 to the solution containing at least one compound selected from the group consisting of a compound having two or more reactive amino groups and a polyfunctional acid halide having two or more reactive acid halide groups which is used when conducting the polycondensation of a compound having two or more reactive amino groups and a polyfunctional acid halide having two or more reactive acid halide groups on a microporous support.
    • 本发明提供一种复合反渗透膜和使用该复合反渗透膜组件的反渗透膜组件,其具有高的耐盐析性,高透水性,以及异丙醇等有机物质的高排斥性,可用于除去有机物质作为 以及具有合适效率和经济性的离子物质。 本发明的高渗透性复合反渗透膜可以通过将溶解度参数为8-14(cal / cm 3)+ E,fra 1/2 + EE的醇或醚等加入到含有至少一种 选自具有两个或更多个反应性氨基的化合物和具有两个或多个反应性酰卤基团的多官能酰卤的化合物,其在进行具有两个或多个反应性氨基的化合物的缩聚时使用的多官能酸 在微孔载体上具有两个或多个反应性酰卤基团的卤化物。
    • 6. 发明授权
    • Composite reverse osmosis membrane and process for preparing the same
    • 复合反渗透膜及其制备方法
    • US06723422B1
    • 2004-04-20
    • US09462109
    • 1999-12-30
    • Masahiko HiroseHiroki ItoTomomi Ohara
    • Masahiko HiroseHiroki ItoTomomi Ohara
    • B32B2000
    • B01D69/02B01D69/125B01D71/56B32B27/34Y10T428/249987Y10T428/249991Y10T428/249992
    • A composite reverse osmosis membrane is described, which includes a polyamide skin layer on a porous support, with a contact angle between the polyamide skin layer surface and water of 45° or less. The composite reverse osmosis membrane has a high salt rejection and also a high water permeability. This composite reverse osmosis membrane is produced by forming a polyamide skin layer on a porous support having the steps of: forming a layer on the porous support by coating a solution A including one or more compounds having at least two reactive amino groups; contacting the layer with a solution B comprising one or more polyfunctional acid halide compounds; and subsequently, contacting the layer with a solution C comprising the polyfunctional acid halide compound of a higher concentration than the solution C. The concentration of the polyfunctional acid halide compound in the solution C is preferably at least 1.2 times of the solution B.
    • 描述了一种复合反渗透膜,其包括多孔载体上的聚酰胺表层,聚酰胺表层与水之间的接触角为45°以下。 复合反渗透膜具有高的耐盐性和高透水性。 该复合反渗透膜是通过在多孔载体上形成聚酰胺表皮层而制成的,其具有以下步骤:通过涂覆包含一种或多种具有至少两个反应性氨基的化合物的溶液A在多孔载体上形成层; 使该层与包含一种或多种多官能酰卤化合物的溶液B接触; 并且随后使该层与包含比溶液C更高浓度的多官能酰卤化合物的溶液C接触。溶液C中多官能酰卤化合物的浓度优选为溶液B的至少1.2倍。
    • 7. 发明授权
    • Liquid separation membrane module
    • 液体分离膜组件
    • US06454942B1
    • 2002-09-24
    • US09484338
    • 2000-01-18
    • Takuji ShintaniHiroki ItoMasahiko HiroseMasaaki Ando
    • Takuji ShintaniHiroki ItoMasahiko HiroseMasaaki Ando
    • B01D6300
    • B01D63/10
    • A liquid separation membrane module includes a semipermeable membrane receiving a pressure of a feed liquid, and a channel material arranged so as to support the back side of the semipermeable membrane. The channel material is a tricot knitted fabric knitted by a tricot knitting machine with two reeds and has a ground stitch portion and a convex portion. The tricot knitted fabric includes a thermoplastic synthetic filament yarn with a core/sheath type conjugated fiber having a high melting point polymer as a core component and a low melting point polymer as a sheath component. Thermoplastic synthetic filament yarns for forming the ground stitch portion and the convex portion have a substantially same fineness, and the yarns in the tricot knitted fabric are bonded with one another by melt adhesion of the low melting point component to rigidity the entire knitted fabric.
    • 液体分离膜组件包括接收进料液体的压力的半透膜和布置成支撑半透膜的背面的通道材料。 通道材料是由具有两个簧片的特里科经编针织机编织的特里科经编针织物,并具有研磨针迹部分和凸起部分。 特里科经编针织物包括具有作为核心组分的高熔点聚合物和作为鞘组分的低熔点聚合物的芯/皮型复合纤维的热塑性合成长丝纱线。 用于形成针迹部分和凸起部分的热塑性合成长丝纱具有基本相同的细度,并且特里科经编针织物中的纱线通过低熔点成分的熔融粘附与整个针织物的刚性彼此粘合。