JPH08131789A - Film for donating hydrophilic effects and manufacture thereof - Google Patents
Film for donating hydrophilic effects and manufacture thereofInfo
- Publication number
- JPH08131789A JPH08131789A JP28047394A JP28047394A JPH08131789A JP H08131789 A JPH08131789 A JP H08131789A JP 28047394 A JP28047394 A JP 28047394A JP 28047394 A JP28047394 A JP 28047394A JP H08131789 A JPH08131789 A JP H08131789A
- Authority
- JP
- Japan
- Prior art keywords
- fatty acid
- acid ester
- solvent
- film
- alcohol
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、疎水性多孔質膜に、ポ
リオキシエチレングリセリン脂肪酸エステルと添加成分
を保持させることによる親水化膜に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydrophilizing membrane obtained by retaining a polyoxyethylene glycerin fatty acid ester and an additive component in a hydrophobic porous membrane.
【０００２】[0002]
【従来の技術】ポリオレフィンに代表される疎水性多孔
質膜は、化学的安定性が高いことなどの利点を有し、水
または水溶液の分離精製、処理等の分野や医療分野で利
用されている。しかし、そのままでは水との親和性が乏
しいので、水または水溶液を処理する用途に用いる場合
には、予め親水化する必要がある。疎水性多孔質膜の親
水化処理のための方法としては、例えば、アルコール、
ケトン等の有機溶剤によって、疎水性多孔質膜の外表
面、微細孔内表面を湿潤処理した後、有機溶剤を水で置
換する方法がある。また、水可溶性親水性高分子や界面
活性剤等の親水化剤を疎水性多孔質膜表面に保持させる
ことによる親水化方法もある。2. Description of the Related Art Hydrophobic porous membranes represented by polyolefins have advantages such as high chemical stability and are used in fields such as separation and purification of water or aqueous solutions, treatment, and medical fields. . However, since it has a poor affinity with water as it is, it must be hydrophilized in advance when it is used for treating water or an aqueous solution. As a method for hydrophilizing the hydrophobic porous membrane, for example, alcohol,
There is a method in which the outer surface of the hydrophobic porous membrane and the inner surfaces of the fine pores are wet-treated with an organic solvent such as a ketone, and then the organic solvent is replaced with water. In addition, there is also a method of hydrophilization by holding a hydrophilizing agent such as a water-soluble hydrophilic polymer or a surfactant on the surface of the hydrophobic porous membrane.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、有機溶
剤による親水化方法は、疎水性多孔質膜を常に湿潤状態
を保持する必要があり、その維持管理が煩雑となってい
る。また、水可溶性親水性高分子による親水化方法は細
孔表面に保持させた親水化剤が水に溶けだし、そのよう
な状態の多孔質膜は一旦乾燥すると、親水性を失ってし
まうので、このような用途では好ましくない。界面活性
剤による親水化方法も水への溶出が懸念される他、雑菌
による資化を受けやすいといった問題がある。本発明は
これらの問題を解決することを目的とする。However, in the method of hydrophilizing with an organic solvent, it is necessary to keep the hydrophobic porous membrane in a wet state at all times, and the maintenance thereof is complicated. Further, in the hydrophilization method using a water-soluble hydrophilic polymer, the hydrophilizing agent held on the surface of the pores begins to dissolve in water, and the porous membrane in such a state loses hydrophilicity once dried, It is not preferable for such applications. The hydrophilic method using a surfactant has a problem that it is likely to be eluted into water and is easily assimilated by various bacteria. The present invention aims to solve these problems.
【０００４】[0004]
【課題を解決するための手段】本発明者らはこれらの問
題点を改良する方法として、親水性部分を有する高分子
であって、かつ膜成分樹脂に対して親和性があり、疎水
性多孔質膜に保持させた際の被処理水中への溶出が生じ
にくい化合物を、親水性−疎水性のバランスを考慮して
選定し、多孔質膜微細孔表面上に付着保持させる方法を
鋭意検討した結果、本発明を完成させるに至った。As a method for improving these problems, the present inventors have found that a polymer having a hydrophilic part and having an affinity for a membrane component resin, and having a hydrophobic porosity. A compound that is less likely to be eluted into the water to be treated when retained on the porous membrane was selected in consideration of the hydrophilicity-hydrophobicity balance, and earnestly studied the method of adhering and retaining it on the surface of the micropores of the porous membrane. As a result, the present invention has been completed.
【０００５】本発明は、片面から他の面に連通している
微細孔を少なくとも一部に有する熱可塑性樹脂からなる
膜において、ポリオキシエチレングリセリン脂肪酸エス
テルと、その他の一種以上の添加成分との混合物を該微
細孔を有する膜の少なくとも一部に付着させて親水性を
付与したことを特徴とする親水化膜に関する。また、該
熱可塑性樹脂が疎水性熱可塑性樹脂のポリエチレン、ポ
リプロピレン、ポリフロロエチレン、ポリアクリロニト
リル、ポリエチレンテレフタレート、ポリスルホン、ポ
リアミド及びポリイミドから選ばれた少なくとも１種の
物質または２種以上の共重合体または２種以上の混合物
であり、 本発明はポリオキシエチレングリセリン脂肪
酸エステルの単独コーティングで通水性能が十分に得ら
れなかった場合に有効な手段となる。本発明における疎
水性多孔質膜としては、中空糸膜、平膜、管状膜等の任
意の形態を用いることができる。疎水性多孔質膜の素材
は、ポリエチレン等前記記載の単量体または共重合体で
ある。本発明で用いるポリオキシエチレングリセリン脂
肪酸エステルは、下記一般式で示され、The present invention relates to a film made of a thermoplastic resin having at least a part of micropores communicating from one surface to the other surface, wherein polyoxyethylene glycerin fatty acid ester and one or more other additive components are added. The present invention relates to a hydrophilized film characterized in that the mixture is attached to at least a part of the film having the fine pores to impart hydrophilicity thereto. Further, the thermoplastic resin is at least one substance selected from polyethylene, polypropylene, polyfluoroethylene, polyacrylonitrile, polyethylene terephthalate, polysulfone, polyamide and polyimide, which are hydrophobic thermoplastic resins, or two or more copolymers or It is a mixture of two or more kinds, and the present invention is an effective means when the water-passing performance is not sufficiently obtained by the single coating of polyoxyethylene glycerin fatty acid ester. As the hydrophobic porous membrane in the present invention, any form such as a hollow fiber membrane, a flat membrane and a tubular membrane can be used. The material of the hydrophobic porous membrane is the above-mentioned monomer or copolymer such as polyethylene. The polyoxyethylene glycerin fatty acid ester used in the present invention is represented by the following general formula,
【０００６】[0006]
【化１】 Embedded image
【０００７】[0007]
【化２】 Embedded image
【０００８】式中、１＋ｍ＝１〜２０であり、特に５〜
２０が好ましい。２０を越えると水溶性となり、好まし
くない。In the formula, 1 + m = 1 to 20, particularly 5 to
20 is preferable. When it exceeds 20, it becomes water-soluble, which is not preferable.
【０００９】本発明に使用するポリオキシエチレングリ
セリン脂肪酸エステルのポリオキシエチレン鎖の炭素数
は１〜２０が好ましく、また、脂肪酸の炭素数は１２〜
１８が好ましい。The polyoxyethylene glycerin fatty acid ester used in the present invention preferably has 1 to 20 carbon atoms in the polyoxyethylene chain, and the fatty acid has 12 to 12 carbon atoms.
18 is preferred.
【００１０】本発明に使用する添加成分は、例えば、シ
ョ糖脂肪酸エステル、グリセリン脂肪酸エステル、ソル
ビタン脂肪酸エステル、ポリオキシエチレンソルビタン
脂肪酸エステル、プロピレングリコール脂肪酸エステ
ル、ポリエチレングリコール脂肪酸エステル、ポリプロ
ピレングリコール脂肪酸エステル、ポリオキシエチレン
脂肪族アルコール、及びポリオキシプロピレンポリオキ
シエチレンブロックポリマー等の非イオン性界面活性
剤、あるいは、ポリアミド、ポリアクリル酸、エチルセ
ルロース、ポリビニルピロリドン、ポリビニルアルコー
ル、エチレン−ビニルアルコール共重合体、ビニルピロ
リドン−酢酸ビニル共重合体等の親水性高分子、マレイ
ン酸樹脂、ポリビニルアセタールジエチルアミノアセテ
ート等を挙げることができる。The additive component used in the present invention is, for example, sucrose fatty acid ester, glycerin fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol fatty acid ester, polypropylene glycol fatty acid ester, poly Nonionic surfactants such as oxyethylene aliphatic alcohol and polyoxypropylene polyoxyethylene block polymer, or polyamide, polyacrylic acid, ethyl cellulose, polyvinylpyrrolidone, polyvinyl alcohol, ethylene-vinyl alcohol copolymer, vinylpyrrolidone -Hydrophilic polymers such as vinyl acetate copolymers, maleic acid resins, polyvinyl acetal diethylaminoacetate, etc. Kill.
【００１１】本発明の親水化膜の製造法は、ポリオキシ
エチレングリセリン脂肪酸エステルと添加成分をアルコ
ール系、アセトン系、芳香族系等の溶媒の単独または混
合溶媒、あるいはその含水溶媒、好ましくは、メチルア
ルコール、エチルアルコール、イソプロピルアルコール
またはアセトンの１種または２種以上の混合物、あるい
はそれらの含水物に溶解し、浸漬液を調製する。浸漬液
の濃度は、ポリオキシエチレングリセリン脂肪酸エステ
ルと添加成分を合計した１〜８重量部を溶媒１００容量
部に溶解したものが好ましい。次いで、疎水性多孔質膜
を浸漬し、膜の貫通微細孔内にも十分溶液を行き渡らせ
た後、乾燥して溶媒を除去する。乾燥手段は、溶媒の種
類により風乾、減圧乾燥、加熱乾燥など通常の方法を適
宜用いることができる。また、ポリオキシエチレングリ
セリン脂肪酸エステルと添加成分についての溶液をそれ
ぞれ別々に調製し、１つの溶液に浸漬するごとに疎水性
多孔質膜を乾燥し、次々に浸漬処理を行う多段浸漬処理
を行ってもよい。溶媒種、及び浸漬の順序は適宜選んで
よい。膜上の親水化剤の量を示す担持率は次式であらわ
され、本発明における親水化剤の担持率は５〜４０重量
％が好ましい。 担持率（重量％）＝親水化剤量（ｇ）／疎水糸重量
（ｇ）×１００In the method for producing a hydrophilic film of the present invention, a polyoxyethylene glycerin fatty acid ester and an additive component are used alone or as a mixed solvent of alcohol-based, acetone-based and aromatic-based solvents, or a water-containing solvent thereof, preferably, A dipping solution is prepared by dissolving in one or a mixture of two or more of methyl alcohol, ethyl alcohol, isopropyl alcohol or acetone, or a hydrate thereof. The concentration of the immersion liquid is preferably one in which 1 to 8 parts by weight of the polyoxyethylene glycerin fatty acid ester and the additional components are dissolved in 100 parts by volume of the solvent. Next, the hydrophobic porous membrane is dipped, and the solution is sufficiently spread also in the through-hole fine pores of the membrane, followed by drying to remove the solvent. As a drying means, a usual method such as air drying, reduced pressure drying, and heat drying can be appropriately used depending on the type of solvent. In addition, a solution of the polyoxyethylene glycerin fatty acid ester and the additive component is separately prepared, the hydrophobic porous membrane is dried each time it is immersed in one solution, and a multi-step immersion treatment is performed in which immersion treatment is performed one after another. Good. The solvent species and the order of immersion may be appropriately selected. The carrying rate showing the amount of the hydrophilizing agent on the membrane is represented by the following formula, and the carrying rate of the hydrophilizing agent in the present invention is preferably 5 to 40% by weight. Carrying rate (% by weight) = hydrophilizing agent amount (g) / hydrophobic yarn weight (g) × 100
【００１２】[0012]
【実施例】以下に実施例及び比較例によって本発明を更
に詳細に説明する。EXAMPLES The present invention will be described in more detail below with reference to examples and comparative examples.
【００１３】実施例１ ポリオキシエチレン（２０）グリセリンモノステアレー
ト〔商品名：リケマールＳ−１２０、理研ビタミン
（株）製〕１重量部とポリビニルアセタールジエチルア
ミノアセテート〔商品名：ＡＥＡ三共、三共（株）製〕
１．５重量部とをアセトン１００容量部に溶解し浸漬液
とし、その中へポリプロピレン多孔質中空糸膜〔宇部興
産（株）製，平均孔径０．３μｍ，空孔率７０％〕を３
０秒間浸漬した。その後、風乾により溶剤の除去を行
い、担持率２５％の親水化膜を得た。この親水化処理し
た中空糸膜を１００本束ねて末端をウレタン樹脂で固
め、有効面積１００ｃｍ2 の膜モジュールを作成した。
この膜モジュールに水圧１ｋｇ／ｃｍ2 をかけて水を濾
過したところ透水量は５０ｃｃ／ｍ2 ・ｍｉｎであり、
優れた透水性を示した。また、水圧１ｋｇ／ｃｍ2 で５
リットルの水を濾過した後、完全に乾燥させた後も透水
性の低下はみられなかった。Example 1 1 part by weight of polyoxyethylene (20) glycerin monostearate [trade name: Likemar S-120, manufactured by Riken Vitamin Co., Ltd.] and polyvinyl acetal diethylaminoacetate [trade name: AEA Sankyo, Sankyo (shares) ))
1.5 parts by weight was dissolved in 100 parts by volume of acetone to make an immersion liquid, and 3 parts of polypropylene porous hollow fiber membrane (manufactured by Ube Industries, Ltd., average pore diameter 0.3 μm, porosity 70%) were added thereto.
Dipped for 0 seconds. Then, the solvent was removed by air drying to obtain a hydrophilic film having a supporting rate of 25%. 100 of the hydrophilically treated hollow fiber membranes were bundled and the ends were fixed with urethane resin to prepare a membrane module having an effective area of 100 cm 2 .
When water pressure was applied to this membrane module at a pressure of 1 kg / cm 2 , the water permeation rate was 50 cc / m 2 · min.
It showed excellent water permeability. Also, 5 at a water pressure of 1 kg / cm 2 .
After filtering 1 liter of water and completely drying, no decrease in water permeability was observed.
【００１４】比較例１ ポリオキシエチレン（２０）グリセリンモノステアレー
ト〔商品名：リケマールＳ−１２０、理研ビタミン
（株）製〕１重量部をアセトン１００容量部に溶解した
浸漬液を用いた以外は実施例１と同様の操作をし、膜モ
ジュールの性能を評価した結果、３０ｃｃ／ｍ2 ・ｍｉ
ｎの透水量を得た。Comparative Example 1 Polyoxyethylene (20) glycerin monostearate [trade name: Likemar S-120, manufactured by Riken Vitamin Co., Ltd.] except that an immersion liquid prepared by dissolving 1 part by weight in 100 parts by volume of acetone was used. The same operation as in Example 1 was performed and the performance of the membrane module was evaluated. As a result, 30 cc / m 2 · mi
A water permeability of n was obtained.
【００１５】実施例２ ポリオキシエチレン（２０）グリセリンモノステアレー
ト〔商品名：リケマールＳ−１２０、理研ビタミン
（株）製〕１重量部とマレイン酸樹脂〔商品名：ＭＳＲ
−４、ハリマ化成（株）製〕１重量部とをエタノール１
００容量部に溶解した浸漬液を用いた以外は実施例１と
同様の操作をし、膜モジュールの性能を評価した結果、
５６ｃｃ／ｍ2 ・ｍｉｎの透水量を得た。Example 2 1 part by weight of polyoxyethylene (20) glycerin monostearate [trade name: Riquemal S-120, manufactured by Riken Vitamin Co.] and maleic acid resin [trade name: MSR]
-4, manufactured by Harima Kasei Co., Ltd.] 1 part by weight and ethanol 1
The same operation as in Example 1 was carried out except that the immersion liquid dissolved in 00 parts by volume was used to evaluate the performance of the membrane module.
A water permeation rate of 56 cc / m 2 · min was obtained.
【００１６】比較例２ ポリオキシエチレン（２０）グリセリンモノステアレー
ト〔商品名：リケマールＳ−１２０、理研ビタミン
（株）製〕１重量部をエタノール１００容量部に溶解し
た浸漬液を用いた以外は実施例１と同様の操作をし、膜
モジュールの性能を評価した結果、３０ｃｃ／ｍ2 ・ｍ
ｉｎの透水量を得た。Comparative Example 2 Polyoxyethylene (20) glycerin monostearate [trade name: Riquemal S-120, manufactured by Riken Vitamin Co., Ltd.] 1 part by weight was dissolved in 100 parts by volume of ethanol, except that an immersion liquid was used. The same operation as in Example 1 was performed and the performance of the membrane module was evaluated. As a result, 30 cc / m 2 · m
A water permeability of in was obtained.
【００１７】実施例３ ４重量部のポリビニルピロリドンＫ３０〔ＢＡＳＦ
（株）製〕をエタノール１００容量部に溶解したものを
第１浸漬液とし、その中へ実施例１で用いたのと同じポ
リプロピレン中空糸膜を３０秒間浸漬した。その後、５
分間風乾し、８０℃の熱風を５分間あてた後、ポリオキ
シエチレン（２０）グリセリンモノステアレート〔商品
名：リケマールＳ−１２０、理研ビタミン（株）製〕
１．５重量部をアセトンに溶解した第２浸漬液中へ３０
秒間浸漬した。その後、風乾し、実施例１と同様の膜モ
ジュールによる透水性評価の結果、６０ｃｃ／ｍ2 ・ｍ
ｉｎの透水量を得た。Example 3 4 parts by weight of polyvinylpyrrolidone K30 [BASF
[Manufactured by Co., Ltd.] dissolved in 100 parts by volume of ethanol was used as a first immersion liquid, and the same polypropylene hollow fiber membrane used in Example 1 was immersed therein for 30 seconds. Then 5
After air-drying for 5 minutes and applying hot air at 80 ° C for 5 minutes, polyoxyethylene (20) glycerin monostearate [trade name: Rikemar S-120, manufactured by Riken Vitamin Co., Ltd.]
30 parts by weight of 1.5 parts by weight in a second immersion liquid dissolved in acetone
Soaked for 2 seconds. Then, it was air-dried, and the result of water permeability evaluation by the same membrane module as in Example 1 was 60 cc / m 2 · m.
A water permeability of in was obtained.
【００１８】比較例３ ポリオキシエチレン（２０）グリセリンモノステアレー
ト〔商品名：リケマールＳ−１２０、理研ビタミン
（株）製〕１．５重量部をアセトン１００容量部に溶解
した浸漬液を用いた以外は実施例１と同様の操作をし、
膜モジュールの性能を評価した結果、４０ｃｃ／ｍ2 ・
ｍｉｎの透水量を得た。Comparative Example 3 1.5 parts by weight of polyoxyethylene (20) glycerin monostearate [trade name: Rikemar S-120, manufactured by Riken Vitamin Co., Ltd.] was dissolved in 100 parts by volume of acetone to prepare an immersion liquid. Other than that, the same operation as in Example 1 is performed,
As a result of evaluating the performance of the membrane module, 40 cc / m 2 ·
A water permeability of min was obtained.
【００１９】比較例４ ４重量部のポリビニルピロリドンＫ３０〔ＢＡＳＦ
（株）製〕をエタノール１００容量部に溶解した浸漬液
を用いた以外は実施例１と同様の操作をし、膜モジュー
ルの性能を評価したところ、全く透水性がみられなかっ
た。Comparative Example 4 4 parts by weight of polyvinylpyrrolidone K30 [BASF
(Manufactured by K.K.) was used, and the performance of the membrane module was evaluated by performing the same operation as in Example 1 except that an immersion liquid dissolved in 100 parts by volume of ethanol was used. As a result, no water permeability was observed.
【００２０】[0020]
【発明の効果】本発明の親水化ポリオレフィン多孔質膜
は濾過後に多孔質膜が乾燥されても透水性能の低下が認
められず、耐久性のある親水性が付与された多孔質膜で
ある。EFFECT OF THE INVENTION The hydrophilized polyolefin porous membrane of the present invention is a porous membrane having durable hydrophilicity with no deterioration in water permeability even when the porous membrane is dried after filtration.
Claims (5)
少なくとも一部に有する熱可塑性樹脂からなる膜におい
て、ポリオキシエチレングリセリン脂肪酸エステルと、
その他の１種類以上の添加成分との混合物を該微細孔を
有する膜の少なくとも一部に付着保持させて親水性を付
与したことを特徴とする親水化膜。1. A film made of a thermoplastic resin having at least a part of micropores communicating from one surface to the other surface, wherein polyoxyethylene glycerin fatty acid ester and
A hydrophilic film, wherein a mixture with at least one other additive component is adhered and held on at least a part of the film having the fine pores to impart hydrophilicity thereto.
セリン脂肪酸エステル、ソルビタン脂肪酸エステル、ポ
リオキシエチレンソルビタン脂肪酸エステル、プロピレ
ングリコール脂肪酸エステル、ポリプロピレングリコー
ル脂肪酸エステル、ポリオキシエチレン脂肪族アルコー
ル、及びポリオキシプロピレンポリオキシエチレンブロ
ックポリマー等の非イオン性界面活性剤、あるいは、ポ
リアミド、ポリアクリル酸、エチルセルロース、ポリビ
ニルピロリドン、ポリビニルアルコール、エチレン−ビ
ニルアルコール共重合体、ビニルピロリドン−酢酸ビニ
ル共重合体、マレイン酸樹脂及びポリビニルアセタール
ジエチルアミノアセテートよりなる群から選ばれた一種
以上である請求項１記載の親水化膜。2. The additive component is sucrose fatty acid ester, glycerin fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, propylene glycol fatty acid ester, polypropylene glycol fatty acid ester, polyoxyethylene fatty alcohol, and polyoxypropylene poly. Nonionic surfactant such as oxyethylene block polymer, or polyamide, polyacrylic acid, ethyl cellulose, polyvinylpyrrolidone, polyvinyl alcohol, ethylene-vinyl alcohol copolymer, vinylpyrrolidone-vinyl acetate copolymer, maleic acid resin and The hydrophilic film according to claim 1, which is one or more selected from the group consisting of polyvinyl acetal diethylaminoacetate.
ン、ポリプロピレン、ポリフロロエチレン、ポリアクリ
ロニトリル、ポリエチレンテレフタレート、ポリスルホ
ン、ポリアミド及びポリイミドから選ばれた少なくとも
１種の物質または２種以上の共重合体または２種以上の
混合物であることを特徴とする請求項１記載の親水化
膜。3. A thermoplastic resin, wherein the hydrophobic resin is a hydrophobic resin such as polyethylene, polypropylene, polyfluoroethylene, polyacrylonitrile, polyethylene terephthalate, polysulfone, polyamide, and polyimide, or at least one substance or two or more copolymers or The hydrophilic film according to claim 1, which is a mixture of two or more kinds.
ステルとその他の１種類以上の添加成分をアルコール
系、ケトン系、芳香族系溶媒、またはそれらの混合溶
媒、あるいはその含水溶媒に溶解したものを浸漬液と
し、片面から他の面に連通している微細孔を少なくとも
一部に有する熱可塑性樹脂からなる膜を浸漬し、微細孔
の少なくとも一部に該ポリオキシエチレングリセリン脂
肪酸エステルと添加成分を付着保持させることを特徴と
する親水化膜の製造法。4. An immersion liquid is obtained by dissolving polyoxyethylene glycerin fatty acid ester and one or more other additive components in an alcohol-based solvent, a ketone-based solvent, an aromatic solvent, a mixed solvent thereof, or a water-containing solvent thereof. , Immersing a film made of a thermoplastic resin having at least a part of micropores communicating from one surface to the other surface, and adhering and holding the polyoxyethylene glycerin fatty acid ester and additional components to at least a part of the micropores A method for producing a hydrophilic film, comprising:
ステルをアルコール系、ケトン系、芳香族系溶媒、また
はそれらの混合溶媒、あるいはその含水溶媒に溶解した
ものを第１浸漬液として、片面から他の面に連通してい
る微細孔を少なくとも一部に有する熱可塑性樹脂からな
る膜を浸漬し、乾燥後、その他の添加成分をアルコール
系、ケトン系、芳香族系溶媒、またはそれらの混合溶
媒、あるいはその含水溶媒に溶解した第２浸漬液に浸漬
し、微細孔の少なくとも一部に該ポリオキシエチレング
リセリン脂肪酸エステルと添加成分を付着保持させるこ
とを特徴とする親水化膜の製造法。5. A solution prepared by dissolving a polyoxyethylene glycerin fatty acid ester in an alcohol-based solvent, a ketone-based solvent, an aromatic solvent, a mixed solvent thereof, or a water-containing solvent thereof is used as a first immersion liquid, and is applied from one surface to the other surface. A film made of a thermoplastic resin having communicating fine pores in at least a part thereof is dipped, and after drying, other additive components are alcohol-based, ketone-based, aromatic-based solvent, or a mixed solvent thereof, or a water content thereof. A method for producing a hydrophilized film, which comprises immersing in a second immersion liquid dissolved in a solvent, and adhering and holding the polyoxyethylene glycerin fatty acid ester and an additive component in at least a part of the fine pores.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28047394A JP3358341B2 (en) | 1994-11-15 | 1994-11-15 | Hydrophilic membrane and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28047394A JP3358341B2 (en) | 1994-11-15 | 1994-11-15 | Hydrophilic membrane and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08131789A true JPH08131789A (en) | 1996-05-28 |
| JP3358341B2 JP3358341B2 (en) | 2002-12-16 |
Family
ID=17625571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28047394A Expired - Fee Related JP3358341B2 (en) | 1994-11-15 | 1994-11-15 | Hydrophilic membrane and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3358341B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0981172A1 (en) * | 1998-08-14 | 2000-02-23 | Celgard Llc | A hydrophilic polyolefin article |
| CN1299810C (en) * | 2003-11-03 | 2007-02-14 | 浙江大学 | Method for modifying hydroophilicity of highly active separation membrane made from polymer |
| EP2172257A1 (en) * | 2007-07-19 | 2010-04-07 | Kurita Water Industries Ltd. | Method for improving blocking rate of permeable membrane, blocking rate improved permeable membrane, and permebale membrane treatment method and apparatus |
| US8151701B2 (en) | 2006-02-11 | 2012-04-10 | Tsukuba Food Science, Inc. | Apparatus and process for producing surface-treated granular product and surface-treated granular product |
-
1994
- 1994-11-15 JP JP28047394A patent/JP3358341B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0981172A1 (en) * | 1998-08-14 | 2000-02-23 | Celgard Llc | A hydrophilic polyolefin article |
| JP2000103886A (en) * | 1998-08-14 | 2000-04-11 | Celgard Llc | Hydrophilic polyolefin |
| US6287730B1 (en) | 1998-08-14 | 2001-09-11 | Celgard Inc. | Hydrophilic polyolefin having a coating containing a surfactant and an EVOH copolymer |
| KR100564834B1 (en) * | 1998-08-14 | 2006-03-28 | 셀가드 인코포레이티드 | A hydrophilic polyolefin |
| JP4618831B2 (en) * | 1998-08-14 | 2011-01-26 | セルガード，インコーポレイテッド | Hydrophilic polyolefin |
| CN1299810C (en) * | 2003-11-03 | 2007-02-14 | 浙江大学 | Method for modifying hydroophilicity of highly active separation membrane made from polymer |
| US8151701B2 (en) | 2006-02-11 | 2012-04-10 | Tsukuba Food Science, Inc. | Apparatus and process for producing surface-treated granular product and surface-treated granular product |
| EP2172257A1 (en) * | 2007-07-19 | 2010-04-07 | Kurita Water Industries Ltd. | Method for improving blocking rate of permeable membrane, blocking rate improved permeable membrane, and permebale membrane treatment method and apparatus |
| EP2172257A4 (en) * | 2007-07-19 | 2011-11-23 | Kurita Water Ind Ltd | Method for improving blocking rate of permeable membrane, blocking rate improved permeable membrane, and permebale membrane treatment method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3358341B2 (en) | 2002-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2530805C (en) | Membranes containing poly(vinyl methyl ether) and hydrophilisation of membranes using poly(vinyl methyl ether) | |
| US20050147757A1 (en) | Method for wetting hydrophobic porous polymeric membranes to improve water flux without alcohol treatment | |
| JP2008543546A (en) | Cross-linking treatment of polymer film | |
| JPS61161103A (en) | Hydrophilic porous membrane and its preparation | |
| US4851121A (en) | Process for rendering porous membrane hydrophilic | |
| JP2001261983A (en) | Molded product for retaining exothermic substance, method for producing the same and use thereof | |
| JPH08131791A (en) | Film for donating hydrophic effects and manufacture thereof | |
| JP3358341B2 (en) | Hydrophilic membrane and its manufacturing method | |
| JPH05317664A (en) | Porous hollow fiber membrane | |
| JPH08131793A (en) | Treatment film for donating hydrophilic effects | |
| JP3358339B2 (en) | Hydrophilic membrane and its manufacturing method | |
| JP3385755B2 (en) | Hydrophilic membrane and method for producing the same | |
| JP3358342B2 (en) | Hydrophilic membrane and method for producing the same | |
| JPH08131792A (en) | Film for donating hydrophilic effects | |
| JP3358340B2 (en) | Hydrophilic membrane and method for producing the same | |
| JPS61125408A (en) | Method for making porous polyolefin hollow yarn hydrophilic | |
| JP2882658B2 (en) | Method for producing polysulfone-based semipermeable membrane | |
| JP2883406B2 (en) | Hydrophilic membrane | |
| JPS60206404A (en) | Permselective membrane and its prepration | |
| JP4120103B2 (en) | Method for treating polyphenylsulfone hollow fiber membrane | |
| JPH07185280A (en) | Hydrophilic polysulfone membrane and production thereof | |
| JPS6219207A (en) | Process for affording hydrophilic property to hydrophobic porous film | |
| AU2004253197B2 (en) | Membrane post treatment | |
| JP2759339B2 (en) | Manufacturing method of hydrophilized porous membrane | |
| JP2022161043A (en) | Manufacturing method of polysulfone hollow fiver membrane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |