JPS60137942A - Production of microporous membrane - Google Patents
Production of microporous membraneInfo
- Publication number
- JPS60137942A JPS60137942A JP58250499A JP25049983A JPS60137942A JP S60137942 A JPS60137942 A JP S60137942A JP 58250499 A JP58250499 A JP 58250499A JP 25049983 A JP25049983 A JP 25049983A JP S60137942 A JPS60137942 A JP S60137942A
- Authority
- JP
- Japan
- Prior art keywords
- methanol
- membrane
- alkyl group
- microporous membrane
- carbon atoms
- 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.)
- Pending
Links
- 239000012982 microporous membrane Substances 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000012528 membrane Substances 0.000 claims abstract description 33
- 229920000642 polymer Polymers 0.000 claims abstract description 18
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 229920001577 copolymer Polymers 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000010409 thin film Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract 2
- 239000011347 resin Substances 0.000 claims abstract 2
- 125000000217 alkyl group Chemical group 0.000 claims description 19
- 125000004432 carbon atom Chemical group C* 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 12
- 239000010408 film Substances 0.000 claims description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 5
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims 2
- 229910000085 borane Inorganic materials 0.000 claims 1
- 229920000515 polycarbonate Polymers 0.000 claims 1
- 239000004417 polycarbonate Substances 0.000 claims 1
- UORVGPXVDQYIDP-UHFFFAOYSA-N trihydridoboron Substances B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 21
- 239000011148 porous material Substances 0.000 abstract description 6
- 229920003986 novolac Polymers 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 2
- 150000001350 alkyl halides Chemical class 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/76—Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74
- B01D71/80—Block polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
- B01D67/003—Organic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/70—Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/70—Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only
- B01D71/701—Polydimethylsiloxane
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は２種以上の混合ガスから特定のガス成分を効率
よく富化または分離する微孔質膜の製造方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for producing a microporous membrane that efficiently enriches or separates specific gas components from a mixture of two or more gases.
従来例の構成とその問題点
膜を用いてガス混合物より特定のガスを・吊化捷たは分
離する方法はすでによく知られている。これらの方法は
用いる膜の構造によって２つ１４分類することができる
。１つは膜中に孔のない均質）換を用いる方法である。Conventional configurations and their problems Methods of suspending or separating specific gases from gas mixtures using membranes are already well known. These methods can be classified into two or fourteen categories depending on the structure of the membrane used. One is a method using a homogeneous membrane without pores.
これは膜中に空孔をほとんど含まず、空孔率はほとんど
Ｏである。カスは均質膜中へ溶解、拡散して膜を透過す
る０従って、ガスの膜への溶解度、拡散速度の相異によ
って混合ガスの分離が起る。もう１つの方法は多孔質膜
を用いる方法で、多孔質膜には１００八Ｉ）’＋５後の
孔が多数存在し、ガス分子がこの孔中を拡散する過程で
、そのガス分子の平均自由行程の差によって分離が行な
われる。一般的に後者は前者の方法に比較してガス透過
性にすぐれるが選択性が低い。This membrane contains almost no pores, and the porosity is almost O. The scum dissolves and diffuses into the homogeneous membrane and permeates through the membrane. Therefore, separation of the mixed gas occurs due to the difference in solubility and diffusion rate of the gas in the membrane. Another method is to use a porous membrane, in which there are many pores in the porous membrane, and in the process of gas molecules diffusing through these pores, the average freedom of the gas molecules is Separation is achieved by the difference in stroke. Generally, the latter method has superior gas permeability but lower selectivity than the former method.
特に分子量がほとんど同じガスの分離は後者の場合不可
能である。従って後者の場合の用途に分子量の差の大き
いガス混合物から特定のガスを分離するのが主で、分子
量が接近した例えば酸素と窒素の分離は前者の均質膜に
よる方法でなければならない。しかしながらこの場合は
所望の透過流量が得られない欠点があった。In particular, separation of gases with almost the same molecular weight is not possible in the latter case. Therefore, in the latter case, the main purpose is to separate a specific gas from a gas mixture with a large difference in molecular weight, and the separation of oxygen and nitrogen, which have close molecular weights, for example, must be performed using the former method using a homogeneous membrane. However, in this case, there was a drawback that the desired permeation flow rate could not be obtained.
発明の目的
本発明は上記従来の欠点を解消し、気体透過性と気体分
離性に優ｔ’Ｌ ｆｔ微孔質膜の製造方法を提供するも
のである。OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned conventional drawbacks and provides a method for producing a t'L ft microporous membrane having excellent gas permeability and gas separation properties.
発明の構成
本発明の要旨とする所はメタノール不溶性ポリマーとメ
タノール［ｌＪＪ’溶な３次元化シリコーン共重合体の
ブレンドから成る薄膜を多孔質支持体上に形成させ複合
化した後、メタノールもしくはエタノール中にこの複合
膜を浸漬するかもしくは接触させることにより多孔質支
持体上の均質な薄膜中にピンホールを生成させ微孔質膜
を製造する方法である。この様にして得られる膜にその
製造条件により均質膜中のピンホールの濃度を任意の状
態に変化することができる。例えばメタノール可溶性の
高分子を重量％で２％以下に押えるとその複合膜はメタ
ノールもしくはエタノール中ｖｃ浸漬しても９８％以上
を占めるメタノール不溶性ポリマーの気体透過特性と殆
んど変わらず、分子量の接近した酸素と窒素の分離性を
示す。さらに濃度？増し２％から１０−％の範囲になる
とメタノール不溶性ポリマーの持つ選択性が低下し除々
に多孔質膜の特性に成って行く。そして１０％を超える
と酸素と窒素の分離性は殆んどなくなるが、水素。Structure of the Invention The gist of the present invention is to form a thin film consisting of a blend of a methanol-insoluble polymer and a methanol [lJJ'-soluble three-dimensional silicone copolymer] on a porous support, to form a composite, and then to form a composite using methanol or ethanol. This is a method for producing a microporous membrane by immersing or bringing the composite membrane into contact with a porous support to generate pinholes in a homogeneous thin film on a porous support. The concentration of pinholes in the homogeneous film can be changed to any desired state depending on the manufacturing conditions of the film thus obtained. For example, if the methanol-soluble polymer is kept below 2% by weight, the resulting composite membrane will have almost no difference in gas permeation properties from the methanol-insoluble polymer, which accounts for over 98%, even when immersed in VC in methanol or ethanol. Shows the separation of oxygen and nitrogen in close proximity. Even more concentrated? When the increase ranges from 2% to 10%, the selectivity of the methanol-insoluble polymer decreases and gradually becomes a porous membrane. If the concentration exceeds 10%, the separation of oxygen and nitrogen will almost disappear, but hydrogen.
ヘリウム等の分子量の異ったガス分離には非常に有効で
ある。またこの様にして得られる微孔質膜は表面の膜素
材を任意のものに変化することができ、表面に均質な膜
を接着して製脱する気体分離膜の製造における支持体と
しても非常に有用である０
本発明によればメタノール溶解性の高分子としての３次
元化シリコーン共重合体としてはポリヒドロキシスチレ
ン（ＰＨ８）−ポリオルガノシロキサン（ＰＯＭＳ）共
重合体、ノボラック樹脂（ＮＢ）−ポリオルガノシロキ
サン（ＰＯＭＳ）共重合体が用いられ、これら材料は界
面活性性を示すためメタノール不溶性筒分子と非常に相
溶性が良く好ましい。It is very effective for separating gases with different molecular weights such as helium. In addition, the surface membrane material of the microporous membrane obtained in this way can be changed to any material, and it is also useful as a support in the production of gas separation membranes, which are produced by bonding a homogeneous membrane to the surface. According to the present invention, three-dimensional silicone copolymers as methanol-soluble polymers include polyhydroxystyrene (PH8)-polyorganosiloxane (POMS) copolymers, novolac resins (NB)- A polyorganosiloxane (POMS) copolymer is used, and since these materials exhibit surface activity, they are highly compatible with methanol-insoluble cylinder molecules and are therefore preferred.
またメタノール不溶性ポリマーとしては、ポリヒドロキ
シスチレンーポリスルホンーポリジメチルシロキザンの
３元系シリコーン共重合体、ノボラック樹脂−ポリスル
ホン−ポリジメチルシロキサンの３元系シリコーン共重
合体、
一般式が
（但し、Ｒ１は水素原子、または炭素数が１から５個の
アルキル基、Ｒ２およびＲ３は炭素数が１から１０個の
アルキル基もしくはハロゲン化アルキル基より成る群よ
り選ばれる。）
で示さｎるポリスルホン−ポリオルガノシロキサン共重
合体、一般式が
（但し、Ｒ１は水素原子、または炭素数が１から５個の
アルキル基、Ｒ２およびＲ３１Ｊ炭素数が１から１０個
のアルキル基もしくはハロゲン化アルキル基より成る群
より選ばれる。 ）
で示さ几るボリカーボネートーポリオル力ノンロキサン
共重合体、一般式が
（但し、Ｒ１は水素原子、または炭素数が１から５個の
アルキル基、Ｒ２およびＲ３は炭素数が１から１０個の
アルキル基もしくはハロゲン化アルから１０個のメチレ
ン基より成る群より選ばれも）で示されるポリウレタン
ーポリオルガノシロキ（但しＲは炭素数が４から７個の
アルキル基、ハロゲン化アルキル基より成る群よジ選ば
扛る。）で示される高分子が使用できる。Examples of methanol-insoluble polymers include ternary silicone copolymers of polyhydroxystyrene-polysulfone-polydimethylsiloxane, ternary silicone copolymers of novolac resin-polysulfone-polydimethylsiloxane, and is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and R2 and R3 are selected from the group consisting of an alkyl group having 1 to 10 carbon atoms or a halogenated alkyl group. Organosiloxane copolymer, the general formula is (wherein R1 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, R2 and R31 are a group consisting of an alkyl group having 1 to 10 carbon atoms or a halogenated alkyl group) A polycarbonate-polyol non-roxane copolymer represented by polyurethane-polyorganosiloxy represented by a group consisting of 1 to 10 alkyl groups or alkyl halides to 10 methylene groups (where R is an alkyl group having 4 to 7 carbon atoms, halogenated Polymers represented by (selected from the group consisting of alkyl groups) can be used.
実施例の説明
（実施例１）
メタノール不溶性ポリマーとして、ポリヒドロキシスチ
レン（ＰＨ３）−ポリスルホン（ｐｓ）−ポリジメチル
シロキサン（ＰＤＭＳ）共重合体を用いた。最初にこの
ＰＨ３−ＰＳ−ＰＤＭＳ共重合体の２重量％ベンゼン溶
液を調製し、この溶液を用い叱ラングミュアーブロジェ
ット法（ＬＢ法）ＴＬよって水面上に薄膜を形成後この
薄膜と多孔質支持体（ポリプラスチック社製ジュラガー
ド２４００）とを接触接着させて複合膜を得た。この時
の複合膜の気体透特性は酸素で０ 、Ｉ Ｃａ ／ Ｓ
［Ｘｌ・Ｏ４・ａｔｍの透過速度と酸素と窒素の透過速
度比（α′）は２．２０であった。次いでこの複合膜を
メタノール中に約３０分浸漬したがこの膜特性に変化は
観察されなかった。Description of Examples (Example 1) A polyhydroxystyrene (PH3)-polysulfone (ps)-polydimethylsiloxane (PDMS) copolymer was used as the methanol-insoluble polymer. First, a 2% by weight benzene solution of this PH3-PS-PDMS copolymer was prepared, and this solution was used to form a thin film on the water surface by the Langmuir-Blodgett method (LB method). A composite film was obtained by contacting and adhering the film to a body (Duraguard 2400 manufactured by Polyplastics). At this time, the gas permeability of the composite membrane is 0 for oxygen, I Ca / S
[The ratio of the permeation rate of Xl.O4.atm to the permeation rate (α') of oxygen and nitrogen was 2.20. This composite membrane was then immersed in methanol for about 30 minutes, but no change was observed in the membrane properties.
（実施例２）
実施例１と同一の高分子を用い溶液の調整の時にポリヒ
ドロキシスチレン（Ｐｕｓ）−ポリジメチルシロキサン
（ＰＤＭＳ）共重合体を３元系シリコーン共重合体に対
して重量で６％添加して同様に実験した。その結果複合
化時の特性はＦ ０２＋０．０９ ｃｏ／ｓｅｃ ＋１
Ｏ４ａ ａｔｍでα’［２，２１で、メタノール処理
後はＦ Ｏ２＋１．１５ ｃａ／ｓｅｅ ＠ ｅＪ ａ
ａｔｍ に増加しα′は２．０６まで低下した。しか
しメタノール綬漬時間を延長してもこれ以上の特性変化
は認めら庇なかった。(Example 2) When preparing a solution using the same polymer as in Example 1, the amount of polyhydroxystyrene (Pus)-polydimethylsiloxane (PDMS) copolymer was 6 by weight relative to the tertiary silicone copolymer. % was added and the same experiment was carried out. As a result, the characteristics when combined are F 02 + 0.09 co/sec +1
O4a atm α'[2,21, after methanol treatment F O2+1.15 ca/see @ eJ a
atm and α' decreased to 2.06. However, even if the methanol soaking time was extended, no further changes in properties were observed.
（実施例３）
実施例２と同様に実験を行ない、ＰＨ８−ＰＤＭＳ共重
合体の組成を３元系シリコーン共重合体に対して１０％
まで増加した。その結果複合化時の特性ｕ ｋ’ｏ２中
０．０８Ｃａ／５ｅＣｅ Ｏ４１１ａｔｍでαは２．１
９で、メタノール処理後はＦ ０２ ＋ ３−１５ ｃ
ｃ／鍜φ。４・ａｔｍｌで増加した。一方α′は１６４
５まで低下した。このメタノール処理膜をさらに３時間
処理するとＦ Ｏ２＋ ６．２０ＣＯ／＋ｅＣ＠ ｃｉ
＠ ａｔｍ まで増加しくＺ’＋ ０．９８となった
。これは均質膜が完全に多孔質膜となったことを示して
いる。そこで水素の透過速度を測定した所ＦＨ２” ３
２．２ ｅｃ／ＳｅＣ・ｃＪ ＠ ａｔｍ に達した。(Example 3) An experiment was conducted in the same manner as in Example 2, and the composition of the PH8-PDMS copolymer was changed to 10% of the ternary silicone copolymer.
It increased to As a result, the characteristic at the time of compounding u k'o2 is 0.08Ca/5eCe O411atm and α is 2.1
9, and after methanol treatment F 02 + 3-15 c
c/鍜φ. It increased at 4.atml. On the other hand, α′ is 164
It dropped to 5. When this methanol-treated membrane is further treated for 3 hours, F O2+ 6.20CO/+eC@ci
It increased to @ atm and became Z'+ 0.98. This indicates that the homogeneous membrane became completely porous. Therefore, we measured the hydrogen permeation rate and found that it was FH2" 3
It reached 2.2 ec/SeC・cJ @ atm.
また処理溶媒としてエタノールを用いても同様の結果と
なった。Similar results were also obtained when ethanol was used as the processing solvent.
発明の効果
以上要するに本発明はメタノール不溶性ポリマーとメタ
ノール可溶性３次元化シリコーン共重合体のブレンドか
らなる均質膜を、メタノールもしくはエタノールに浸漬
または接触させることにより均質膜中に均一にピンホー
ルを生成させ、ることを特徴とする微孔質膜の製造方法
を提供するもので気体透過性が非常に優れかつ気体分離
性も従来の多孔質膜より向上した微孔質膜を製造できる
。Effects of the Invention In short, the present invention involves uniformly generating pinholes in a homogeneous membrane made of a blend of a methanol-insoluble polymer and a methanol-soluble three-dimensional silicone copolymer by immersing or contacting it in methanol or ethanol. The present invention provides a method for producing a microporous membrane, which is characterized by the following: It is possible to produce a microporous membrane that has excellent gas permeability and improved gas separation performance compared to conventional porous membranes.
またこの微孔質膜製造法は膜の用途に応じて膜の特性を
任意に変化することができ膜製造上非常に有効な手段で
ある。Furthermore, this method for producing a microporous membrane allows the properties of the membrane to be arbitrarily changed depending on the intended use of the membrane, making it a very effective means for membrane production.
Claims (1)
１’ｍ性３次元化シリコーン共重合体の混合から成る薄
膜を多孔質支持体上に形成させ複合膜化した後、メタノ
ールもしくはエタノール中に前ｔ＋ｄ複合膜を浸漬する
かもしくは接触させることにより薄膜中に微孔を生成さ
せることを特徴とする微孔質膜の製造方法Ｃ （２）メタノール不溶性ポリマーがポリヒドロキシスチ
レンーポリスルホンーポリジメチルシロギサン３元系シ
リコーン共重合体であることを特徴とする特許請求の範
囲第１項記載の微孔質膜の製造方法。 （３） メタノール不溶性ポリマーガノボラソク樹脂−
ボリスルホンーポリジメチルシロキサン３元系シリコー
ン共重合体であることを特徴とする特許請求の範囲第１
項記載の微孔質膜の製造方法。 （４）メタノール不溶性ポリマーが、一般式（但し、Ｒ
１は水素原子、または炭素数が１から５個のアルキル基
、Ｒ２およびＲ３ハ炭素数が１から１０個のアルキル基
もしくは）・ロゲン化アルキル基より成る群より選ばれ
る。） で示されるポリスルホン−ポリジメチルシロキサン共重
合体であることを特徴とする特許請求の範囲第１項記載
の微孔質膜の製造方法０ （６） メタノール不溶性ポリマーが、一般式（但し、
Ｒ１は水素原子、または炭素数が１から５個のアルキル
基、Ｒ２およびＲ３は炭素数が１から１０個のアルキル
基もしくはノ・ロゲン化アルキル基より成る群より選ば
れる。） で示されるポリカーボネートボリンメチルシロキサン共
重合体であることを特徴とする特許請求の範囲第１項記
載の微孔質膜の製造方法。 （６） メタノール不溶性のポリマーが、一般式（世し
Ｒ１は水素原子、または炭素数が１から５個のアルキル
基、Ｒ２およびＲ３は炭素数が１から１０個のアルキル
基もしくはハロゲン化アルキル個のメチレン基より成る
群より選ばれる。）で示されるポリウレタン−ポリジメ
チルシロキサン共重合体であることを特徴とする特許請
求の範囲第１項記載の微孔質膜の製造方法。 （但しＲ［炭素数が４から７個のアルキル基、）・ロゲ
ン化アルキル基より成る群より選ばれる０）で示される
ポリオレフィンであることを特徴とする特許請求の範囲
第１項記載の微孔質膜の製造方法。[Claims] (1) Methanol-insoluble polymer and methanol i'+
After forming a thin film consisting of a mixture of 1'm three-dimensional silicone copolymers on a porous support to form a composite film, the pre-t+d composite film is immersed in or brought into contact with methanol or ethanol to form a thin film. Method C for producing a microporous membrane characterized by generating micropores therein (2) characterized in that the methanol-insoluble polymer is a polyhydroxystyrene-polysulfone-polydimethylsiloxane ternary silicone copolymer A method for producing a microporous membrane according to claim 1. (3) Methanol-insoluble polymer Ganoborasok resin
Claim 1, characterized in that it is a borisulfone-polydimethylsiloxane ternary silicone copolymer.
A method for producing a microporous membrane as described in Section 1. (4) The methanol-insoluble polymer has the general formula (where R
1 is selected from the group consisting of a hydrogen atom or an alkyl group having 1 to 5 carbon atoms; R2 and R3 are an alkyl group having 1 to 10 carbon atoms; ) A method for producing a microporous membrane according to claim 1, characterized in that the methanol-insoluble polymer is a polysulfone-polydimethylsiloxane copolymer represented by the general formula (however,
R1 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and R2 and R3 are selected from the group consisting of an alkyl group having 1 to 10 carbon atoms or an alkyl group having 1 to 10 carbon atoms. ) The method for producing a microporous membrane according to claim 1, wherein the microporous membrane is a polycarbonate borine methylsiloxane copolymer represented by the following formula. (6) The methanol-insoluble polymer has the general formula (R1 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, R2 and R3 are an alkyl group having 1 to 10 carbon atoms, or a halogenated alkyl group) 2. The method for producing a microporous membrane according to claim 1, wherein the microporous membrane is a polyurethane-polydimethylsiloxane copolymer selected from the group consisting of methylene groups. (provided that the polyolefin is a polyolefin selected from the group consisting of R [an alkyl group having 4 to 7 carbon atoms), and 0 selected from the group consisting of a rogenated alkyl group]. Method for manufacturing porous membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58250499A JPS60137942A (en) | 1983-12-26 | 1983-12-26 | Production of microporous membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58250499A JPS60137942A (en) | 1983-12-26 | 1983-12-26 | Production of microporous membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60137942A true JPS60137942A (en) | 1985-07-22 |
Family
ID=17208782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58250499A Pending JPS60137942A (en) | 1983-12-26 | 1983-12-26 | Production of microporous membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60137942A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG93898A1 (en) * | 1999-10-01 | 2003-01-21 | Shipley Co Llc | Porous materials |
| WO2015183538A3 (en) * | 2014-05-28 | 2016-01-21 | The Regents Of The University Of California | Poly(akylene-b-dialkylsiloxane-b-alkylene) triblock copolymers, membranes therewith and uses thereof |
-
1983
- 1983-12-26 JP JP58250499A patent/JPS60137942A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SG93898A1 (en) * | 1999-10-01 | 2003-01-21 | Shipley Co Llc | Porous materials |
| WO2015183538A3 (en) * | 2014-05-28 | 2016-01-21 | The Regents Of The University Of California | Poly(akylene-b-dialkylsiloxane-b-alkylene) triblock copolymers, membranes therewith and uses thereof |
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