JPS6399246A - Filmy raw material - Google Patents
Filmy raw materialInfo
- Publication number
- JPS6399246A JPS6399246A JP24062787A JP24062787A JPS6399246A JP S6399246 A JPS6399246 A JP S6399246A JP 24062787 A JP24062787 A JP 24062787A JP 24062787 A JP24062787 A JP 24062787A JP S6399246 A JPS6399246 A JP S6399246A
- Authority
- JP
- Japan
- Prior art keywords
- ion exchange
- exchange resin
- polytetrafluoroethylene
- membrane
- porous film
- 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.)
- Granted
Links
- 239000002994 raw material Substances 0.000 title abstract 2
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 24
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical class C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 21
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 21
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 12
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 12
- 239000012528 membrane Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 15
- 230000002209 hydrophobic effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 238000005273 aeration Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 239000010409 thin film Substances 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920005615 natural polymer Polymers 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229920000298 Cellophane Polymers 0.000 description 1
- 229920000544 Gore-Tex Polymers 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Abstract
Description
【発明の詳細な説明】
「発明の目的」
本発明は膜状素材の創案に係り、各種液体、気体の処理
操作に適した機能性膜状素材を提供しようとするもので
ある。DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION The present invention relates to the creation of a membrane-like material, and aims to provide a functional membrane-like material suitable for processing various liquids and gases.
（産業上の利用分野）
各種液体、気体の分離、機能的処理ないし脱気や給気な
どに用いられる膜材。(Industrial application field) Membrane materials used for separation of various liquids and gases, functional processing, deaeration, air supply, etc.
（従来の技術）
各種液体、気体の分離、機能的処理、脱気または散気目
的において各種合成樹脂膜が採用されている。例えば電
池などのセパレータとしてイオン交換樹脂膜、又セロフ
ァンなどの微孔性天然高分子フィルムやプラスチックフ
ィルムにアクリル酸やメククリル酸をグラフト重合させ
た膜などが知られている。又液体に対する散気ないし脱
気に関して多孔質樹脂フィルムを用いることが行われて
いる。(Prior Art) Various synthetic resin membranes are employed for the purpose of separating various liquids and gases, functional treatment, deaeration, or aeration. For example, as separators for batteries, ion exchange resin membranes, and membranes made by graft polymerizing acrylic acid or meccrylic acid onto microporous natural polymer films such as cellophane or plastic films are known. Also, porous resin films are used for aeration or deaeration of liquids.
更に各種フィルターとしても多孔質樹脂フィルムが用い
られている。Furthermore, porous resin films are also used as various filters.
また各種混合液体、気体の特定成分の分離に関しても夫
々の分離機能を有する樹脂膜が利用されている。Furthermore, resin membranes having respective separation functions are also used to separate specific components of various mixed liquids and gases.
（発明が解決しようとする問題点）
然し上記したような従来のものにおいてはなお問題点が
多い。即ちイオン交換樹脂を製膜したものは薄膜状とな
し、あるいは交換容量を上げたりするとその強度や液中
における安定性に劣ることとなる不利がある。微孔性天
然高分子フィルムによるものでは酸化剤により酸化され
て劣化する傾向が大であり、プラスチックフィルムにア
クリル酸などをグラフト重合させたものにおいては活物
質の拡散が起ったり、腐食性に問題がある。更にこのよ
うな樹脂フィルムは一般的にｆ８水性を有し、微細化さ
れた気体粒子に種々の影響を与え、充分に均一微細で効
率のよい散気目的を達し得ない。(Problems to be Solved by the Invention) However, there are still many problems in the conventional devices as described above. That is, when a film made of an ion exchange resin is formed into a thin film or when the exchange capacity is increased, there is a disadvantage that the strength and stability in a liquid are deteriorated. Microporous natural polymer films have a strong tendency to be oxidized and deteriorated by oxidizing agents, while plastic films made by graft polymerizing acrylic acid etc. may cause diffusion of active materials and become corrosive. There's a problem. Moreover, such resin films generally have f8 aqueous properties, which have various effects on the finely divided gas particles, and cannot achieve the purpose of sufficiently uniform fine and efficient aeration.
更に疏水性多孔質樹脂フィルムを水系フィルターとして
使用するときは高い透水圧の適用が必要である等の問題
がある。また水分の選択的透過性が高く、耐熱性のある
分離膜は極めて限られている。Furthermore, when a hydrophobic porous resin film is used as a water-based filter, there are problems such as the need to apply high water permeability pressure. Separation membranes that have high water selective permeability and heat resistance are extremely limited.
「発明の構成」
（問題点を解決するための手段）
ポリテトラフルオロエチレン多孔質フィルムに対し重量
比で３〜９０％のパーフロロ系イオン交換樹脂を均一状
態に添着一体化したことを特徴とする膜状素材。"Structure of the Invention" (Means for Solving the Problems) The present invention is characterized in that a perfluorinated ion exchange resin of 3 to 90% by weight is uniformly impregnated and integrated with a polytetrafluoroethylene porous film. Membrane material.
（作 用）
多孔質ポリテトラフルオロエチレンフィルムはｔａ水性
を有し、液体中において充分な機械的強度や寸法安定性
を得しめる。又このような多孔質ポリテトラフルオロエ
チレンフィルムを基体とすることによりパーフロロ系イ
オン交換樹脂膜が薄膜として、又部分的に多孔質ポリテ
トラフルオロエチレン組織中に進入結合して安定に形成
される。(Function) The porous polytetrafluoroethylene film has TA aqueous properties and can obtain sufficient mechanical strength and dimensional stability in liquid. Further, by using such a porous polytetrafluoroethylene film as a substrate, a perfluoro-based ion exchange resin membrane can be stably formed as a thin film and partially penetrated and bonded into the porous polytetrafluoroethylene structure.
前記パーフロロ系イオン交換樹脂膜は親水性を有し、１
ａ水性の上記ポリテトラフルオロエチレンフィルムにこ
のような親水性薄膜が形成されることにより液体に対す
る特性が変化せしめられる。即ち充実膜においては水等
のパーフロロ系イオン交換樹脂に対する親和成分の選択
透過能のある膜となる。またパーフロロ系イオン交換樹
脂によって表面が均一に蔽われた連続多孔質膜にあって
は表面特性の変化によって透水圧が下って水の透過が容
易となり、水系のフィルターとしての適性が向上する。The perfluorinated ion exchange resin membrane has hydrophilicity, and has 1
(a) By forming such a hydrophilic thin film on the aqueous polytetrafluoroethylene film, the properties with respect to liquids are changed. That is, a solid membrane has the ability to selectively permeate components having an affinity for perfluorinated ion exchange resins such as water. Furthermore, in the case of a continuous porous membrane whose surface is uniformly covered with a perfluorinated ion-exchange resin, the permeability pressure decreases due to changes in surface properties, making it easier for water to permeate, thereby improving its suitability as a water-based filter.
更に水素での散気用に使用するときはパーフロロ系イオ
ン交換樹脂被覆のない場合に比し温かに微細均一な効率
のよい散気を可能とする。Furthermore, when used for aeration with hydrogen, it enables warmer, finer, more uniform and more efficient aeration than in the case without perfluorinated ion exchange resin coating.
また多孔質ポリテトラフルオロエチレンフィルムは官能
基がないので化学処理には適さないが、パーフロロ系イ
オン交換樹脂は官能基を有するのでこれとの複合化によ
り酵素固定等の官能基を利用した各種機能化が可能とな
る。In addition, porous polytetrafluoroethylene film does not have functional groups and is therefore not suitable for chemical treatment, but perfluorinated ion exchange resins have functional groups and can be combined with these to perform various functions using functional groups, such as enzyme immobilization. It becomes possible to
このパーフロロ系イオン交換樹脂膜の量がポリテトラフ
ルオロエチレン多孔質フィルムの３％以上とされること
により上記した液体に対する特性変化を適切に図らしめ
、またこの量を９０％以下とすることにより多孔質ポリ
テトラフルオロエチレンフィルムを基材とした機械的強
度ないし寸法安定性を有効に得しめる。By setting the amount of this perfluorinated ion exchange resin membrane to 3% or more of the polytetrafluoroethylene porous film, the above-mentioned characteristic change with respect to the liquid can be appropriately achieved, and by setting this amount to 90% or less, the porous Mechanical strength and dimensional stability can be effectively obtained using high-quality polytetrafluoroethylene film as a base material.
（実施例）
上記した本発明によるものの具体的な実施態様を説明す
ると、本発明によるものは気孔率３５％以上、特に４０
％以上のポリテトラフルオロエチレンの延伸加工フィル
ムにパーフロロ系イオン交換樹脂を均一状態に添着一体
化する。この添着一体化はパーフロロ系イオン交換樹脂
のフィルムを融着し、あるいはその樹脂液コーティング
の何れによってもよい。このようなポリテトラフルオロ
エチレンフィルムとパーフロロ系イオン交換樹脂との接
着一体化をなす代表的方法の若干は以下の如くで、その
何れによってもよい。(Example) To explain the specific embodiment of the above-mentioned product according to the present invention, the product according to the present invention has a porosity of 35% or more, especially 40%.
% or more of polytetrafluoroethylene stretched film is uniformly impregnated with perfluorinated ion exchange resin. This attachment and integration may be accomplished either by fusing a film of perfluorinated ion exchange resin or by coating with a resin liquid. Some typical methods for bonding and integrating the polytetrafluoroethylene film and the perfluoro ion exchange resin are as follows, and any of them may be used.
■ 延伸処理して得られた多孔［ＰＴＦＥフィルムにパ
ーフロロ系イオン交換樹脂液を充分に含浸させて緻密な
隔膜とする。(2) The porous PTFE film obtained by stretching is sufficiently impregnated with a perfluoro ion exchange resin solution to form a dense diaphragm.
■ 上記■において、パーフロロ系イオン交換樹脂液を
不充分な状態に含浸させてなお多孔質性を有する隔膜と
する。(2) In the above (2), the membrane is impregnated with a perfluorinated ion exchange resin liquid in an insufficient state to obtain a porous membrane.
■ ＰＴＦＥ樹脂にイオン交換樹脂液を混合して緻密な
隔膜として製膜する。■ Mix ion exchange resin liquid with PTFE resin to form a dense diaphragm.
■ 上記■において製膜に当って延伸し多孔質の膜とす
る。(2) In step (2) above, the membrane is stretched to form a porous membrane.
■ イオン交換樹脂を先ず薄膜状に成形し、これをＰＴ
ＦＥ多孔質膜にラミネート接着する。■ The ion exchange resin is first formed into a thin film, which is then coated with PT.
Laminate and adhere to the FE porous membrane.
何れの場合においてもＰＴＦＥに対するパーフロロ系イ
オン交換樹脂との割合は前記のように重量比で３〜９０
％であり、特に１０〜３０％とすることが好ましい。又
膜全体の厚さについては一般的に１〜３００μｍ１特に
３〜５０μｍである。In either case, the weight ratio of perfluorinated ion exchange resin to PTFE is 3 to 90 as described above.
%, particularly preferably 10 to 30%. The thickness of the entire film is generally 1 to 300 .mu.m, particularly 3 to 50 .mu.m.
ポリテトラフルオロエチレン多孔質フィルムの厚さにつ
いては一般的に１〜３００μｍ、特に３〜５０μｍであ
る。The thickness of the polytetrafluoroethylene porous film is generally 1 to 300 μm, particularly 3 to 50 μm.
上記のようにして得られた膜状素材は液中、気中におけ
る各種用途に利用することができ、例えば液中に存する
気体骨の除去、液体に対する気体の添加、あるいは電解
隔膜、気体、液体の分離膜、特に水分の選択透過膜、フ
ィルター、酵素固定膜等の化学反応促進膜などの機能膜
として採用されるが、薄膜材であって好ましい機械的強
度、寸法安定性を有し、ポリテトラフルオロエチレン多
孔質フィルムに求められない多くの高機能を賦与し得る
。The membrane-like material obtained as described above can be used for various purposes in liquid or air, such as removing gaseous bones present in liquid, adding gas to liquid, or electrolytic diaphragm, gas, liquid It is used as a functional membrane such as a separation membrane, especially a water selective permeation membrane, a filter, and a chemical reaction promoting membrane such as an enzyme immobilization membrane. It can provide many high functions not required of a tetrafluoroethylene porous film.
ハロゲン−亜鉛電池用セパレータとして用いた場合にお
いては上記のような機械的強度や寸法安定性と共に電解
質による劣化を受けることがなく、電気抵抗が低いと共
にクーロン効率に優れたものとして得られ、電池寿命も
高い。When used as a separator for halogen-zinc batteries, it has the mechanical strength and dimensional stability mentioned above, is not degraded by electrolytes, has low electrical resistance, and has excellent coulombic efficiency, resulting in a long battery life. It's also expensive.
「発明の効果」
以上説明したような本発明によるときは機械的強度と寸
法的安定性に優れ、製造条件によって膜全体の親水性ま
たは撥水性と親水性の同時具備も可能であり、各種分離
膜、反応膜等の液体と気体とを処理する機器ないし設備
において利用し好ましい特性を示す膜材を提供し得るも
のであって、工業的にその効果の大きい発明である。``Effects of the Invention'' The present invention as explained above has excellent mechanical strength and dimensional stability, and depending on the manufacturing conditions, it is possible to have the entire membrane hydrophilic or have both water repellency and hydrophilicity at the same time, and it is possible to perform various separations. This invention can provide a membrane material that exhibits desirable characteristics when used in equipment or equipment that processes liquids and gases, such as membranes and reaction membranes, and is an invention that has great industrial effects.
手続補正書（自発）
８８６里、１０．２＠日
特許庁長官小′ 川 邦 夫 殿
１、事件の表示
昭和ｂλ年特 許願第２４６２７号２、発明の名
称
昧収′奔料
３、補正をする者
事件との関係特許出願人
名 称帳名） ジャパンゴアテックス株式会社４、代
理人
昭和 年 月 日 発送
補正の内容
１、本願明細書中東１頁「特許請求の範囲」の項の記載
を別紙の如く訂正する。Procedural amendment (voluntary) 886 ri, 10.2 @Japan Patent Office Director General Kunio O'kawa 1, Indication of the case Showa Bλ Patent Application No. 24627 2, Name of the invention
Title collection fee 3, Name of patent applicant related to the case of the person making the amendment Book name) Japan Gore-Tex Co., Ltd. 4, Agent Month, Day, 1939 Contents of shipping amendment 1, Middle East page 1 of the specification of the present application "Patent The statement in the "Scope of Claims" section is corrected as shown in the attached sheet.
２、同５頁１行目中に「水素」とあるのをｒ水系１と訂
正する。2. Correct the word "hydrogen" in the first line of page 5 to read r-water system 1.
「（特許請求の範囲）
１． ポリテトラフルオロエチレン多孔質フィルムに対
し重量比で３〜９０％のパーフロロ系イオン交換樹脂を
均一状態に添着一体化したことを特徴とする膜状素材。``(Claims) 1. A membrane-like material comprising a porous polytetrafluoroethylene film and a perfluorinated ion exchange resin uniformly impregnated therewith in an amount of 3 to 90% by weight.
２、 ポリテトラフルオロエチレン多孔質フィルムにパ
ーフロロ系イオン交換樹脂液を含浸させ密実な膜材とし
た特許請求の範囲第１項に記載の膜状素材。2. The membrane material according to claim 1, which is made into a dense membrane material by impregnating a polytetrafluoroethylene porous film with a perfluoro ion exchange resin liquid.
Claims (1)
重量比で３〜９０％のパーフロロ系イオン交換樹脂を均
一状態に添着一体化したことを特徴とする膜状素材。 ２、ポリテトラフルオロエチレン多孔質フィルムにパー
フロロ系イオン交換樹脂液を含浸させ密実な膜材とした
特許請求の範囲第１項に記載の膜状素材。 ３、ポリテトラフルオロエチレン多孔質フィルムにパー
フロロ系イオン交換樹脂を不充分状態に含浸させ、なお
多孔質性を有する膜材とした膜状素材。[Scope of Claims] 1. A membrane-like material comprising a polytetrafluoroethylene porous film and a perfluorinated ion exchange resin uniformly attached thereto in an amount of 3 to 90% by weight. 2. The membrane material according to claim 1, which is made into a dense membrane material by impregnating a polytetrafluoroethylene porous film with a perfluorinated ion exchange resin liquid. 3. A membrane material obtained by impregnating a polytetrafluoroethylene porous film insufficiently with a perfluoro ion exchange resin to obtain a porous membrane material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62240627A JPH0610277B2 (en) | 1987-09-28 | 1987-09-28 | Membrane material |
| AU17506/88A AU1750688A (en) | 1987-09-28 | 1988-06-08 | A composite film material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62240627A JPH0610277B2 (en) | 1987-09-28 | 1987-09-28 | Membrane material |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60084590A Division JPS61246394A (en) | 1985-04-22 | 1985-04-22 | Diaphragm for electrolysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6399246A true JPS6399246A (en) | 1988-04-30 |
| JPH0610277B2 JPH0610277B2 (en) | 1994-02-09 |
Family
ID=17062311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62240627A Expired - Lifetime JPH0610277B2 (en) | 1987-09-28 | 1987-09-28 | Membrane material |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0610277B2 (en) |
| AU (1) | AU1750688A (en) |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0309259A2 (en) * | 1987-09-24 | 1989-03-29 | Toa Nenryo Kogyo Kabushiki Kaisha | Immobilized electrolyte membrane and method of preparation thereof |
| US5082472A (en) * | 1990-11-05 | 1992-01-21 | Mallouk Robert S | Composite membrane for facilitated transport processes |
| JP2001510396A (en) * | 1996-12-20 | 2001-07-31 | ユーエスエフ・フィルトレイション・アンド・セパレイションズ・グループ・インコーポレイテッド | Cleaning method |
| US6689501B2 (en) | 2001-05-25 | 2004-02-10 | Ballard Power Systems Inc. | Composite ion exchange membrane for use in a fuel cell |
| US7734339B2 (en) | 2002-11-27 | 2010-06-08 | Tokuyama Corporation | Iontophoresis apparatus |
| US8182687B2 (en) | 2002-06-18 | 2012-05-22 | Siemens Industry, Inc. | Methods of minimising the effect of integrity loss in hollow fibre membrane modules |
| US8268176B2 (en) | 2003-08-29 | 2012-09-18 | Siemens Industry, Inc. | Backwash |
| US8287743B2 (en) | 2007-05-29 | 2012-10-16 | Siemens Industry, Inc. | Membrane cleaning with pulsed airlift pump |
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| US8318028B2 (en) | 2007-04-02 | 2012-11-27 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
| US8377305B2 (en) | 2004-09-15 | 2013-02-19 | Siemens Industry, Inc. | Continuously variable aeration |
| US8382981B2 (en) | 2008-07-24 | 2013-02-26 | Siemens Industry, Inc. | Frame system for membrane filtration modules |
| US8894858B1 (en) | 2005-08-22 | 2014-11-25 | Evoqua Water Technologies Llc | Method and assembly for water filtration using a tube manifold to minimize backwash |
| US8956464B2 (en) | 2009-06-11 | 2015-02-17 | Evoqua Water Technologies Llc | Method of cleaning membranes |
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| US9533261B2 (en) | 2012-06-28 | 2017-01-03 | Evoqua Water Technologies Llc | Potting method |
| US9604166B2 (en) | 2011-09-30 | 2017-03-28 | Evoqua Water Technologies Llc | Manifold arrangement |
| US9675938B2 (en) | 2005-04-29 | 2017-06-13 | Evoqua Water Technologies Llc | Chemical clean for membrane filter |
| US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
| US9764289B2 (en) | 2012-09-26 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane securement device |
| US9815027B2 (en) | 2012-09-27 | 2017-11-14 | Evoqua Water Technologies Llc | Gas scouring apparatus for immersed membranes |
| US9914097B2 (en) | 2010-04-30 | 2018-03-13 | Evoqua Water Technologies Llc | Fluid flow distribution device |
| US9925499B2 (en) | 2011-09-30 | 2018-03-27 | Evoqua Water Technologies Llc | Isolation valve with seal for end cap of a filtration system |
| US9962865B2 (en) | 2012-09-26 | 2018-05-08 | Evoqua Water Technologies Llc | Membrane potting methods |
| US10322375B2 (en) | 2015-07-14 | 2019-06-18 | Evoqua Water Technologies Llc | Aeration device for filtration system |
| US10427102B2 (en) | 2013-10-02 | 2019-10-01 | Evoqua Water Technologies Llc | Method and device for repairing a membrane filtration module |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0545068A3 (en) * | 1991-11-08 | 1993-12-22 | Du Pont | Wetting of diaphragms |
| US6110333A (en) * | 1997-05-02 | 2000-08-29 | E. I. Du Pont De Nemours And Company | Composite membrane with highly crystalline porous support |
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| US3962153A (en) * | 1970-05-21 | 1976-06-08 | W. L. Gore & Associates, Inc. | Very highly stretched polytetrafluoroethylene and process therefor |
| JPS5177675A (en) * | 1974-12-27 | 1976-07-06 | Sumitomo Electric Industries | SHIFUTSUKAECHIRENJUSHITAKOSEIKO ZOBUTSUYORINARU FUKUGO FUIRUMU |
| JPS5663770A (en) * | 1979-10-26 | 1981-05-30 | Asahi Glass Co Ltd | Alkaline battery |
| JPS56151558A (en) * | 1980-04-09 | 1981-11-24 | Du Pont | Protective clothing for woven fabric containing layer of ion exchanging polymer fluorinated to high degree |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3962153A (en) * | 1970-05-21 | 1976-06-08 | W. L. Gore & Associates, Inc. | Very highly stretched polytetrafluoroethylene and process therefor |
| JPS5177675A (en) * | 1974-12-27 | 1976-07-06 | Sumitomo Electric Industries | SHIFUTSUKAECHIRENJUSHITAKOSEIKO ZOBUTSUYORINARU FUKUGO FUIRUMU |
| JPS5663770A (en) * | 1979-10-26 | 1981-05-30 | Asahi Glass Co Ltd | Alkaline battery |
| JPS56151558A (en) * | 1980-04-09 | 1981-11-24 | Du Pont | Protective clothing for woven fabric containing layer of ion exchanging polymer fluorinated to high degree |
Cited By (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0309259A3 (en) * | 1987-09-24 | 1990-10-10 | Toa Nenryo Kogyo Kabushiki Kaisha | Immobilized electrolyte membrane and method of preparation thereof |
| EP0309259A2 (en) * | 1987-09-24 | 1989-03-29 | Toa Nenryo Kogyo Kabushiki Kaisha | Immobilized electrolyte membrane and method of preparation thereof |
| US5082472A (en) * | 1990-11-05 | 1992-01-21 | Mallouk Robert S | Composite membrane for facilitated transport processes |
| JP2001510396A (en) * | 1996-12-20 | 2001-07-31 | ユーエスエフ・フィルトレイション・アンド・セパレイションズ・グループ・インコーポレイテッド | Cleaning method |
| US6689501B2 (en) | 2001-05-25 | 2004-02-10 | Ballard Power Systems Inc. | Composite ion exchange membrane for use in a fuel cell |
| US8182687B2 (en) | 2002-06-18 | 2012-05-22 | Siemens Industry, Inc. | Methods of minimising the effect of integrity loss in hollow fibre membrane modules |
| US7734339B2 (en) | 2002-11-27 | 2010-06-08 | Tokuyama Corporation | Iontophoresis apparatus |
| US8268176B2 (en) | 2003-08-29 | 2012-09-18 | Siemens Industry, Inc. | Backwash |
| US8377305B2 (en) | 2004-09-15 | 2013-02-19 | Siemens Industry, Inc. | Continuously variable aeration |
| US9675938B2 (en) | 2005-04-29 | 2017-06-13 | Evoqua Water Technologies Llc | Chemical clean for membrane filter |
| US8894858B1 (en) | 2005-08-22 | 2014-11-25 | Evoqua Water Technologies Llc | Method and assembly for water filtration using a tube manifold to minimize backwash |
| US8293098B2 (en) | 2006-10-24 | 2012-10-23 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
| US8318028B2 (en) | 2007-04-02 | 2012-11-27 | Siemens Industry, Inc. | Infiltration/inflow control for membrane bioreactor |
| US9764288B2 (en) | 2007-04-04 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane module protection |
| US8372276B2 (en) | 2007-05-29 | 2013-02-12 | Siemens Industry, Inc. | Membrane cleaning with pulsed airlift pump |
| US10507431B2 (en) | 2007-05-29 | 2019-12-17 | Evoqua Water Technologies Llc | Membrane cleaning with pulsed airlift pump |
| US8840783B2 (en) | 2007-05-29 | 2014-09-23 | Evoqua Water Technologies Llc | Water treatment membrane cleaning with pulsed airlift pump |
| US9573824B2 (en) | 2007-05-29 | 2017-02-21 | Evoqua Water Technologies Llc | Membrane cleaning with pulsed airlift pump |
| US8287743B2 (en) | 2007-05-29 | 2012-10-16 | Siemens Industry, Inc. | Membrane cleaning with pulsed airlift pump |
| US9206057B2 (en) | 2007-05-29 | 2015-12-08 | Evoqua Water Technologies Llc | Membrane cleaning with pulsed airlift pump |
| US9023206B2 (en) | 2008-07-24 | 2015-05-05 | Evoqua Water Technologies Llc | Frame system for membrane filtration modules |
| US8382981B2 (en) | 2008-07-24 | 2013-02-26 | Siemens Industry, Inc. | Frame system for membrane filtration modules |
| US8956464B2 (en) | 2009-06-11 | 2015-02-17 | Evoqua Water Technologies Llc | Method of cleaning membranes |
| US9914097B2 (en) | 2010-04-30 | 2018-03-13 | Evoqua Water Technologies Llc | Fluid flow distribution device |
| US10441920B2 (en) | 2010-04-30 | 2019-10-15 | Evoqua Water Technologies Llc | Fluid flow distribution device |
| US9630147B2 (en) | 2010-09-24 | 2017-04-25 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
| US9022224B2 (en) | 2010-09-24 | 2015-05-05 | Evoqua Water Technologies Llc | Fluid control manifold for membrane filtration system |
| US9925499B2 (en) | 2011-09-30 | 2018-03-27 | Evoqua Water Technologies Llc | Isolation valve with seal for end cap of a filtration system |
| US10391432B2 (en) | 2011-09-30 | 2019-08-27 | Evoqua Water Technologies Llc | Manifold arrangement |
| US9604166B2 (en) | 2011-09-30 | 2017-03-28 | Evoqua Water Technologies Llc | Manifold arrangement |
| US11065569B2 (en) | 2011-09-30 | 2021-07-20 | Rohm And Haas Electronic Materials Singapore Pte. Ltd. | Manifold arrangement |
| US9533261B2 (en) | 2012-06-28 | 2017-01-03 | Evoqua Water Technologies Llc | Potting method |
| US9962865B2 (en) | 2012-09-26 | 2018-05-08 | Evoqua Water Technologies Llc | Membrane potting methods |
| US9764289B2 (en) | 2012-09-26 | 2017-09-19 | Evoqua Water Technologies Llc | Membrane securement device |
| US9815027B2 (en) | 2012-09-27 | 2017-11-14 | Evoqua Water Technologies Llc | Gas scouring apparatus for immersed membranes |
| US10427102B2 (en) | 2013-10-02 | 2019-10-01 | Evoqua Water Technologies Llc | Method and device for repairing a membrane filtration module |
| US11173453B2 (en) | 2013-10-02 | 2021-11-16 | Rohm And Haas Electronic Materials Singapores | Method and device for repairing a membrane filtration module |
| US10322375B2 (en) | 2015-07-14 | 2019-06-18 | Evoqua Water Technologies Llc | Aeration device for filtration system |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1750688A (en) | 1989-04-06 |
| JPH0610277B2 (en) | 1994-02-09 |
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| Date | Code | Title | Description |
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| EXPY | Cancellation because of completion of term |