JPH10330510A - Heterogeneous ion-exchange membrane - Google Patents
Heterogeneous ion-exchange membraneInfo
- Publication number
- JPH10330510A JPH10330510A JP9146849A JP14684997A JPH10330510A JP H10330510 A JPH10330510 A JP H10330510A JP 9146849 A JP9146849 A JP 9146849A JP 14684997 A JP14684997 A JP 14684997A JP H10330510 A JPH10330510 A JP H10330510A
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- JP
- Japan
- Prior art keywords
- ion
- exchange resin
- ion exchange
- layer
- membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、不均質イオン交換
膜、特に溶液より特定成分を吸着または透過分離するた
めの不均質イオン交換膜に関する。The present invention relates to a heterogeneous ion exchange membrane, and more particularly to a heterogeneous ion exchange membrane for adsorbing or permeating and separating a specific component from a solution.
【０００２】[0002]
【従来の技術】イオン交換膜として、数多くの文献、特
許が報告されているが、もっとも実用的で有益なものと
して、スチレン−ジビニルベンゼン共重合体系のイオン
交換膜がある。これらは耐薬品性、耐熱性に優れ、架橋
剤であるジビニルベンゼンの含有量を変えることによ
り、イオン交換特性や選択透過性を制御できることか
ら、あらゆる用途に対し多種の品種が合成され発展して
きた。特に製塩に関わる電気透析による海水濃縮分野に
おいては、低抵抗で輸率が高く、１価イオンを選択的に
透過する高度な機能を有する膜が開発されている。2. Description of the Related Art Numerous documents and patents have been reported as ion exchange membranes, but the most practical and useful one is a styrene-divinylbenzene copolymer-based ion exchange membrane. These are excellent in chemical resistance and heat resistance, and by changing the content of divinylbenzene as a cross-linking agent, it is possible to control ion exchange characteristics and permselectivity, so various types have been synthesized and developed for all uses. . In particular, in the field of seawater concentration by electrodialysis relating to salt production, a membrane having a low resistance, a high transport number, and an advanced function of selectively transmitting monovalent ions has been developed.
【０００３】しかし、このスチレン−ジビニルベンゼン
共重合体系のイオン交換膜は重合、反応という煩雑で敏
感な工程を伴うためコストがかかり、さらにその際に発
生する発熱や寸法変化等のコントロールが難しく、歩留
まりが低下し高価なものとなる欠点があった。However, this styrene-divinylbenzene copolymer-based ion exchange membrane involves complicated and sensitive steps of polymerization and reaction, so that it is costly, and furthermore, it is difficult to control the heat generation and dimensional change generated at that time. There is a disadvantage that the yield is reduced and the cost is high.
【０００４】一方、イオン交換樹脂を粉砕したものとバ
インダを混合し加熱押し出しや、溶媒を用いたキャスト
製膜により製造される不均質イオン交換膜は、重合や反
応という工程がなく比較的簡便な工程によりイオン交換
膜が安価に得られるため、１９５０年頃から数多くの研
究がなされてきた。On the other hand, a heterogeneous ion-exchange membrane produced by mixing a crushed ion-exchange resin with a binder, heating and extruding, or casting a film using a solvent has a relatively simple structure without a step of polymerization or reaction. Since about 1950, many researches have been conducted since an ion exchange membrane can be obtained inexpensively by the process.
【０００５】例えば、バインダとしてポリプロピレンを
用いた例が特公昭５１−１２３１３に、ポリエチレン、
ポリイソブチレン、天然ゴム、ブチルゴム、ポリイソプ
レン、ポリクロロプレン、スチレン−ブタジエンゴム、
ニトリルゴム、塩化ビニル−脂肪酸ビニルエステル共重
合体を用いた例がＵＳＰ−２６８１３１９およびＵＳＰ
−２６８１３２０に、また線状低密度ポリエチレンや超
高分子量高密度ポリエチレンを用いた例がＷＯ９４−０
６８５０に記載されている。[0005] For example, Japanese Patent Publication No. 51-12313 discloses an example using polypropylene as a binder.
Polyisobutylene, natural rubber, butyl rubber, polyisoprene, polychloroprene, styrene-butadiene rubber,
Examples using nitrile rubber and vinyl chloride-fatty acid vinyl ester copolymer are disclosed in USP-2681319 and USP
-26813120, and an example using linear low-density polyethylene or ultra-high-molecular-weight high-density polyethylene is described in WO94-0.
6850.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記のような
イオン交換樹脂とバインダを含有する不均質イオン交換
膜は、電気抵抗を低下させるためにイオン交換樹脂の混
合率を上げると、膜を通しての水の透過速度が大きくな
るため輸率が低下し、さらには膜の機械的強度も低下す
る。一方、逆にイオン交換樹脂の混合率を下げると、電
気抵抗が大きくなる欠点があった。However, the heterogeneous ion-exchange membrane containing the ion-exchange resin and the binder as described above, when the mixing ratio of the ion-exchange resin is increased in order to reduce the electric resistance, the membrane passing through the membrane. As the water permeation rate increases, the transport number decreases, and the mechanical strength of the membrane also decreases. On the other hand, when the mixing ratio of the ion exchange resin is lowered, the electric resistance is disadvantageously increased.
【０００７】本発明は、イオン交換樹脂が膜表面から脱
離しにくく、電気抵抗が低く、かつ水の透過速度が小さ
い不均質イオン交換膜を得ることを目的とする。An object of the present invention is to provide a heterogeneous ion-exchange membrane in which an ion-exchange resin is less likely to be detached from the membrane surface, has a low electric resistance and a low water permeation rate.
【０００８】[0008]
【課題を解決するための手段】本発明は、イオン交換樹
脂とバインダとを含むイオン交換体層が複層化された不
均質イオン交換膜であって、それぞれのイオン交換体層
におけるイオン交換樹脂の含有率が異なることを特徴と
する不均質イオン交換膜を提供する。SUMMARY OF THE INVENTION The present invention relates to a heterogeneous ion exchange membrane having a multilayered ion exchanger layer containing an ion exchange resin and a binder, wherein the ion exchange resin in each ion exchanger layer is provided. To provide a heterogeneous ion-exchange membrane characterized by different contents of
【０００９】本発明は、イオン交換樹脂の含有率が異な
るイオン交換体層を複層化させることを特徴とする。こ
れにより、膜の電気抵抗を低く保ち、かつ輸率を高くす
ることができる。[0009] The present invention is characterized in that the ion exchanger layers having different contents of the ion exchange resin are formed into multiple layers. Thereby, the electrical resistance of the membrane can be kept low and the transport number can be increased.
【００１０】イオン交換体層を形成するイオン交換樹脂
とバインダの混合比は、重量比でイオン交換樹脂／バイ
ンダが４０／６０〜７５／２５、特には５０／５０〜６
５／３５であるのが好ましい。イオン交換樹脂が４０重
量％未満では、得られる不均質イオン交換膜の電気抵抗
が著しく上昇するので好ましくない。イオン交換樹脂が
７５重量％超では機械的強度が著しく低下し成形しがた
くなるので好ましくない。The mixing ratio of the ion exchange resin and the binder forming the ion exchange layer is such that the weight ratio of the ion exchange resin / binder is 40/60 to 75/25, particularly 50/50 to 6/50.
It is preferably 5/35. When the amount of the ion exchange resin is less than 40% by weight, the electric resistance of the obtained heterogeneous ion exchange membrane is undesirably increased. If the amount of the ion exchange resin exceeds 75% by weight, the mechanical strength is remarkably reduced and molding becomes difficult, which is not preferable.
【００１１】本発明の不均質イオン交換膜において、イ
オン交換樹脂含有率が小さいイオン交換体層（以下、イ
オン交換体層Ｂという）のイオン交換樹脂含有率は、イ
オン交換樹脂含有率が大きいイオン交換体層（以下、イ
オン交換体層Ａという）のそれに対して０．９５以下で
あるのが好ましく、特には０．７〜０．９であるのが好
ましい。上記比率が０．９５を超えると、膜の電気抵抗
を低く保ち、かつ輸率を高くできるという複層化の効果
が小さくなり好ましくない。In the heterogeneous ion-exchange membrane of the present invention, the ion-exchange resin content of the ion-exchange layer having a small ion-exchange resin content (hereinafter referred to as ion-exchange layer B) is the same as that of the ion-exchange resin having a large ion-exchange resin content. It is preferably 0.95 or less with respect to that of the exchanger layer (hereinafter referred to as ion exchanger layer A), and particularly preferably 0.7 to 0.9. If the above ratio is more than 0.95, the effect of multi-layering, that is, the electrical resistance of the membrane can be kept low and the transport number can be increased, is not preferable.
【００１２】本発明において、イオン交換体層Ｂの厚さ
はイオン交換体層Ａの厚さに対して、１／１〜１／５
０、特には１／２〜１／１０であることが好ましい。上
記比率が１／１より大きい場合は前記複層化の効果が小
さくなり、１／５０より小さい場合は複層化自体が困難
となるので好ましくない。In the present invention, the thickness of the ion exchanger layer B is 1/1 to 1/5 of the thickness of the ion exchanger layer A.
It is preferably 0, particularly preferably 1/2 to 1/10. When the above ratio is more than 1/1, the effect of the multi-layering is reduced, and when the ratio is less than 1/50, the multi-layering itself becomes difficult, which is not preferable.
【００１３】複層化されるイオン交換体層の数および配
列は、特に限定されず、２種以上のイオン交換体層が任
意に配列されうるが、特には、１枚のイオン交換体層Ａ
と１枚のイオン交換体層Ｂとからなる２層構造のもの、
１枚のイオン交換体層Ｂを２枚のイオン交換体層Ａの間
に配した３層構造のものが好ましい。The number and arrangement of the ion-exchanger layers to be laminated are not particularly limited, and two or more ion-exchanger layers can be arbitrarily arranged.
And a two-layer structure composed of a single ion exchanger layer B,
A three-layer structure in which one ion exchanger layer B is disposed between two ion exchanger layers A is preferable.
【００１４】また、複層化されるイオン交換体層の組み
合わせとしては、イオン交換樹脂の種類が異なるイオン
交換体層の組み合わせ、バインダの種類が異なるイオン
交換体層の組み合わせなども任意に選択できる。As the combination of the ion exchanger layers to be laminated, a combination of ion exchanger layers having different types of ion exchange resins, a combination of ion exchanger layers having different types of binder, and the like can be arbitrarily selected. .
【００１５】本発明の不均質イオン交換膜の厚さは１０
〜２０００μｍ、特には１００〜１０００μｍが好まし
い。不均質イオン交換膜の厚さが１０μｍ未満では機械
的強度が小さく、２０００μｍ超では電気抵抗が大きく
なるので好ましくない。The thickness of the heterogeneous ion exchange membrane of the present invention is 10
２０００2000 μm, particularly preferably 100-1000 μm. If the thickness of the heterogeneous ion exchange membrane is less than 10 μm, the mechanical strength is small, and if it is more than 2000 μm, the electric resistance increases, which is not preferable.
【００１６】イオン交換体層を形成するイオン交換樹脂
は、カチオン交換樹脂やアニオン交換樹脂、両性イオン
交換樹脂などが使用でき、これらは単独で使用してもよ
く、それらを混合して使用してもよい。特に、スチレン
−ジビニルベンゼン共重合体に強酸性または強塩基性の
イオン交換基を導入したイオン交換樹脂は、汎用でコス
トも低いことから好ましく用いられる。As the ion exchange resin forming the ion exchanger layer, a cation exchange resin, an anion exchange resin, an amphoteric ion exchange resin, and the like can be used. These may be used alone or in combination. Is also good. In particular, an ion exchange resin in which a strongly acidic or strongly basic ion exchange group is introduced into a styrene-divinylbenzene copolymer is preferably used because it is widely used and low in cost.
【００１７】イオン交換体層を形成するバインダとして
は、ポリエチレン、ポリプロピレン、ポリイソブチレン
等のポリオレフィンの他、ポリ塩化ビニル、ポリ塩化ビ
ニリデン、ポリフッ化ビニリデン等のポリハロゲン化オ
レフィン、イソプレンゴム、クロロプレンゴム、ブタジ
エンゴム、スチレン−ブタジエンゴム、アクリロニトリ
ル−ブタジエンゴム、エチレン−プロピレンゴム等の合
成ゴムや天然ゴム、スチレン系熱可塑性エラストマー、
オレフィン系熱可塑性エラストマーなどを使用できる。
なかでもポリオレフィンやオレフィン系熱可塑性エラス
トマーが耐薬品性に優れており、好ましい。Examples of the binder forming the ion exchanger layer include polyolefins such as polyethylene, polypropylene and polyisobutylene, as well as polyhalogenated olefins such as polyvinyl chloride, polyvinylidene chloride and polyvinylidene fluoride, isoprene rubber and chloroprene rubber. Butadiene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber, synthetic rubber and natural rubber such as ethylene-propylene rubber, styrene-based thermoplastic elastomer,
An olefin-based thermoplastic elastomer can be used.
Among them, polyolefins and olefin-based thermoplastic elastomers are preferable because of their excellent chemical resistance.
【００１８】イオン交換樹脂のイオン交換容量は１．０
〜５．０ｍｅｑ／ｇ乾燥樹脂、特には３．０〜４．５ｍ
ｅｑ／ｇ乾燥樹脂であるのが好ましい。イオン交換容量
が上記範囲未満では得られる不均質イオン交換膜の電気
抵抗が高くなり、また上記範囲超では不均質イオン交換
膜の機械的強度が著しく低下するので好ましくない。The ion exchange capacity of the ion exchange resin is 1.0
-5.0 meq / g dry resin, especially 3.0-4.5 m
It is preferably eq / g dry resin. If the ion exchange capacity is less than the above range, the obtained heterogeneous ion exchange membrane has high electric resistance, and if the ion exchange capacity exceeds the above range, the mechanical strength of the heterogeneous ion exchange membrane is unpreferably reduced.
【００１９】イオン交換樹脂の粒子の粒径は、最大粒径
が１００μｍ以下であることが好ましい。最大粒径が１
００μｍ超では、得られるイオン交換膜の表面が疎とな
るので好ましくない。最大粒径が４５μｍ以下の場合は
さらに好ましい。The maximum particle size of the ion exchange resin particles is preferably 100 μm or less. Maximum particle size is 1
If it exceeds 00 μm, the surface of the obtained ion exchange membrane becomes unfavorably rough. It is more preferable that the maximum particle size is 45 μm or less.
【００２０】本発明におけるイオン交換体層の成形方法
としては、イオン交換樹脂を乾燥、粉砕、分級した後、
バインダと混練し、押し出し成形や加熱プレス成形等の
熱溶融成形により作製する方法が好ましい。上記イオン
交換膜の形状は特に限定されず、平膜状、中空糸状、円
筒状、メッシュ状、多孔体、布状など種々の形状に成形
できる。また、複層化による不均質イオン交換膜の成形
方法としては、特に限定されないが、イオン交換樹脂の
粒子とバインダの混合比の異なるイオン交換体層を別々
に成形した後加熱プレス等で熱融着する方法、または多
層押し出しにより成形する方法などが用いられる。In the method of forming the ion exchanger layer in the present invention, the ion exchange resin is dried, pulverized, classified,
A method of kneading with a binder and preparing by hot melt molding such as extrusion molding or hot press molding is preferable. The shape of the ion exchange membrane is not particularly limited, and can be formed into various shapes such as a flat membrane, a hollow fiber, a cylinder, a mesh, a porous body, and a cloth. The method of forming the heterogeneous ion exchange membrane by layering is not particularly limited, but the ion exchange layers having different mixing ratios of the ion exchange resin particles and the binder are separately formed and then heat-melted by a hot press or the like. For example, a method of attaching, or a method of molding by multilayer extrusion is used.
【００２１】本発明の不均質イオン交換膜は、海水濃
縮、かん水の脱塩、酸濃縮回収および有価金属回収など
の電気透析、酸回収等の拡散透析、２次電池等のセパレ
ータに有用なイオン交換膜に用いられる。特には、かん
水の電気透析脱塩による工業用水および飲料水の製造、
イオン交換樹脂とイオン交換膜を組み合せて純水を製造
する自己再生型電気透析純水製造に有用である。The heterogeneous ion exchange membrane of the present invention can be used for electrodialysis such as seawater concentration, desalination of brackish water, acid concentration and recovery of valuable metals, diffusion dialysis such as acid recovery, and separators useful for separators of secondary batteries and the like. Used for exchange membranes. In particular, the production of industrial water and drinking water by electrodialysis desalination of brackish water,
It is useful for self-regenerating electrodialysis pure water production in which pure water is produced by combining an ion exchange resin and an ion exchange membrane.
【００２２】[0022]
【実施例】次に本発明を実施例（例１）および比較例
（例２、例３）により説明するが、本発明はこれらによ
り限定されない。Next, the present invention will be described with reference to Examples (Example 1) and Comparative Examples (Examples 2 and 3), but the present invention is not limited thereto.
【００２３】［例１］スチレンージビニルベンゼン共重
合体系樹脂にスルホン基が導入されたカチオン交換樹脂
（三菱化学社製品名：ダイヤイオンＳＫ−１Ｂ、イオン
交換容量４．４ｍｅｑ／ｇ乾燥樹脂）を、６０℃で２４
時間温風乾燥後、ロータミルにて粉砕した。粉砕した粒
子はステンレスメッシュでふるい、２０μｍ以上の粒子
を除いた。得られた２０μｍ未満のイオン交換樹脂粒子
と、低密度ポリエチレンとエチレン−プロピレン−ジエ
ンゴムの混合比が７０／３０（重量比）であるバインダ
を用い、イオン交換樹脂粒子とバインダの混合比が７０
／３０（重量比）で混合し、ラボプラストミルで１３０
℃、２０分混練し、混練物ａを得た。また、同様の方法
で、イオン交換樹脂粒子とバインダの混合比が５０／５
０（重量比）である混練物ｂを得た。Example 1 A cation exchange resin having a sulfone group introduced into a styrene divinylbenzene copolymer resin (Mitsubishi Chemical Corporation product name: Diaion SK-1B, ion exchange capacity 4.4 meq / g dry resin) was used. 24 at 60 ° C
After drying with hot air for hours, it was pulverized by a rotor mill. The pulverized particles were sieved with a stainless mesh to remove particles having a size of 20 μm or more. The obtained ion-exchange resin particles having a particle size of less than 20 μm and a binder having a mixing ratio of low-density polyethylene and ethylene-propylene-diene rubber of 70/30 (weight ratio) were used, and the mixing ratio of the ion-exchange resin particles and the binder was 70.
/ 30 (weight ratio) and mix with Labo Plastomill 130
The mixture was kneaded at 20 ° C. for 20 minutes to obtain a kneaded product a. In a similar manner, the mixture ratio of the ion exchange resin particles and the binder is 50/5.
A kneaded material b having a weight ratio of 0 was obtained.
【００２４】得られた混練物ａおよび混練物ｂをそれぞ
れ平板プレスにて１６０℃で加熱溶融プレスし、混練物
ａより厚さ４２０μｍの膜ａを一枚成形し、混練物ｂよ
り厚さ４０μｍの膜ｂを二枚成形した。次いで、二枚の
膜ｂの間に膜ａをはさみ、再び平板プレスにより１６０
℃で加熱溶融プレスし、複層した不均質カチオン交換膜
を得た。得られた膜を５０℃にて２日間イオン交換水に
浸漬した後、上記膜の電気抵抗を２５℃にて０．５Ｎ食
塩水中で交流１０００Ｈｚで測定したところ比抵抗は５
００Ω・ｃｍであった。また、静的輸率を２５℃にて
０．５Ｎ／１．０Ｎ食塩水で測定したところ０．８８で
あった。また膜の片側に水を入れ０．３５ｋｇ／ｃｍ2
の圧力をかけて水の透過性を測定したところ水透過速度
は０．５ｇ／ｈ・ｍ2 であった。The obtained kneaded material a and kneaded material b were each heated and melt-pressed at 160 ° C. by a flat plate press to form a single film a having a thickness of 420 μm from the kneaded material a and a thickness of 40 μm from the kneaded material b. Was formed into two sheets. Next, the film a is sandwiched between the two films b, and the film a is
The resulting mixture was heated and melt-pressed at ℃ to obtain a multilayer heterogeneous cation exchange membrane. After immersing the obtained membrane in ion-exchanged water at 50 ° C. for 2 days, the electrical resistance of the membrane was measured at 25 ° C. in a 0.5N saline solution at an alternating current of 1000 Hz.
It was 00 Ω · cm. The static transport number was measured at 25 ° C. with 0.5 N / 1.0 N saline, and was 0.88. Water was added to one side of the membrane and 0.35 kg / cm 2
The water permeation rate was 0.5 g / h · m 2 when the water permeation rate was measured by applying the pressure shown in FIG.
【００２５】［例２］イオン交換樹脂粒子とバインダの
混合比を６０／４０（重量比）とした他は例１の膜ａと
同様にして厚さ５００μｍの膜を作製した。得られた膜
を５０℃にて２日間イオン交換水に浸漬した後、膜の電
気抵抗、静的輸率、水透過速度を測定したところ比抵抗
は５００Ω・ｃｍと例１と同じ値であったが、静的輸率
は０．８６と低い値であり、水の透過速度も１０ｇ／ｈ
・ｍ2 と大きい値であった。Example 2 A film having a thickness of 500 μm was prepared in the same manner as in Example 1 except that the mixing ratio of the ion-exchange resin particles and the binder was changed to 60/40 (weight ratio). After immersing the obtained membrane in ion-exchanged water at 50 ° C. for 2 days, the electrical resistance, static transport number, and water permeation rate of the membrane were measured. The specific resistance was 500 Ω · cm, which was the same value as in Example 1. However, the static transport number is as low as 0.86, and the water permeation rate is also 10 g / h.
-The value was as large as m 2 .
【００２６】［例３］イオン交換樹脂粒子とバインダの
混合比を５０／５０（重量比）とした他は例１の膜ａと
同様にして厚さ５００μｍの膜を作製した。得られた膜
を５０℃にて２日間イオン交換水に浸漬した後、膜の電
気抵抗、静的輸率、水透過速度を測定したところ水透過
速度は０．１ｇ／ｈ・ｍ2 と小さく、静的輸率も０．８
８と高い値であったが、比抵抗は２４７０Ω・ｃｍと大
きい値であった。Example 3 A film having a thickness of 500 μm was prepared in the same manner as in Example 1 except that the mixing ratio of the ion-exchange resin particles and the binder was changed to 50/50 (weight ratio). After the obtained membrane was immersed in ion-exchanged water at 50 ° C. for 2 days, the electrical resistance, static transport number, and water permeation rate of the membrane were measured. The water permeation rate was as small as 0.1 g / h · m 2. , 0.8
Although the value was as high as 8, the specific resistance was as large as 2470 Ω · cm.
【００２７】[0027]
【発明の効果】本発明の不均質イオン交換膜は、電気抵
抗が低く、輸率も高くかつ水透過速度も小さい。The heterogeneous ion exchange membrane of the present invention has a low electric resistance, a high transport number, and a low water permeation rate.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ０８Ｌ 25/18 Ｃ０８Ｌ 25/18 // Ｃ０８Ｌ 25:08 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI C08L 25/18 C08L 25/18 // C08L 25:08
Claims (4)
交換体層が複層化された不均質イオン交換膜であって、
それぞれのイオン交換体層におけるイオン交換樹脂の含
有率が異なることを特徴とする不均質イオン交換膜。1. A heterogeneous ion exchange membrane in which an ion exchanger layer containing an ion exchange resin and a binder is multilayered,
A heterogeneous ion exchange membrane, wherein the content of the ion exchange resin in each ion exchanger layer is different.
換体層Ａの厚さに対する、イオン交換樹脂の含有率が小
さいイオン交換体層Ｂの厚さの比が１／１〜１／５０で
ある請求項１記載の不均質イオン交換膜。2. The ratio of the thickness of the ion exchange layer B having a small content of the ion exchange resin to the thickness of the ion exchange layer A having a high content of the ion exchange resin is 1/1 to 1/50. The heterogeneous ion exchange membrane according to claim 1.
に対する、イオン交換体層Ｂのイオン交換樹脂含有率の
比が０．９５以下である請求項１または２記載の不均質
イオン交換膜。3. The heterogeneous ion exchange membrane according to claim 1, wherein the ratio of the ion exchange resin content of the ion exchange layer B to the ion exchange resin content of the ion exchange layer A is 0.95 or less. .
換体層Ａの間に配して複層化した請求項１、２または３
記載の不均質イオン交換膜。4. A multi-layer structure wherein one ion-exchange layer B is disposed between two ion-exchange layers A.
A heterogeneous ion exchange membrane as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9146849A JPH10330510A (en) | 1997-06-04 | 1997-06-04 | Heterogeneous ion-exchange membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9146849A JPH10330510A (en) | 1997-06-04 | 1997-06-04 | Heterogeneous ion-exchange membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10330510A true JPH10330510A (en) | 1998-12-15 |
Family
ID=15416940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9146849A Withdrawn JPH10330510A (en) | 1997-06-04 | 1997-06-04 | Heterogeneous ion-exchange membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10330510A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010095740A1 (en) * | 2009-02-23 | 2010-08-26 | 旭硝子株式会社 | Cation-exchange membrane, a production method thereof, and an electrolytic cell utilizing same |
| JP2011201289A (en) * | 2010-03-03 | 2011-10-13 | Kurita Water Ind Ltd | Multilayered sheet |
| WO2016132799A1 (en) * | 2015-02-19 | 2016-08-25 | 富士フイルム株式会社 | Composite anion exchange membrane, method for producing same, ion exchange membrane module, and ion exchanger |
-
1997
- 1997-06-04 JP JP9146849A patent/JPH10330510A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010095740A1 (en) * | 2009-02-23 | 2010-08-26 | 旭硝子株式会社 | Cation-exchange membrane, a production method thereof, and an electrolytic cell utilizing same |
| US8349155B2 (en) | 2009-02-23 | 2013-01-08 | Asahi Glass Company, Limited | Cation exchange membrane, production process thereof and electrolytic cell using the same |
| JP5494644B2 (en) * | 2009-02-23 | 2014-05-21 | 旭硝子株式会社 | Cation exchange membrane, method for producing the same, and electrolytic cell using the same |
| JP2011201289A (en) * | 2010-03-03 | 2011-10-13 | Kurita Water Ind Ltd | Multilayered sheet |
| WO2016132799A1 (en) * | 2015-02-19 | 2016-08-25 | 富士フイルム株式会社 | Composite anion exchange membrane, method for producing same, ion exchange membrane module, and ion exchanger |
| US20170333846A1 (en) * | 2015-02-19 | 2017-11-23 | Fujifilm Corporation | Composite anion exchange membrane, method for producing the same, ion exchange membrane module, and ion exchange device |
| US10421044B2 (en) | 2015-02-19 | 2019-09-24 | Fujifilm Corporation | Composite anion exchange membrane, method for producing the same, ion exchange membrane module, and ion exchange device |
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