JPH11246669A - Dissolved composition of sulfonic acid group-containing fluorocarbon polymer - Google Patents

Dissolved composition of sulfonic acid group-containing fluorocarbon polymer

Info

Publication number
JPH11246669A
JPH11246669A JP5039698A JP5039698A JPH11246669A JP H11246669 A JPH11246669 A JP H11246669A JP 5039698 A JP5039698 A JP 5039698A JP 5039698 A JP5039698 A JP 5039698A JP H11246669 A JPH11246669 A JP H11246669A
Authority
JP
Japan
Prior art keywords
sulfonic acid
acid group
fluorocarbon polymer
component
contg
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.)
Withdrawn
Application number
JP5039698A
Other languages
Japanese (ja)
Inventor
Nobuyuki Uematsu
信之 植松
Nobuhito Hoshi
星  信人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP5039698A priority Critical patent/JPH11246669A/en
Publication of JPH11246669A publication Critical patent/JPH11246669A/en
Withdrawn legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition useful for e.g. films usable in electrolysis, dialysis or fuel cells by using a mixed solvent comprising a specific nitrile-contg. compound and a fluorine-contg. compound so as to include a polymer quickly dissolved therein at normal pressures without any decomposition of the solvent. SOLUTION: This composition is obtained by dissolving in (A) a mixed solvent comprising (A1 ) a nitrile-contg. hydrocarbon [e.g. an alkane(di)nitrile, arylnitrile, with the number of carbon atoms being <=10 and the number ratio: carbon atoms/nitriles being 1.5-7] and (A2 ) a fluorine-contg. organic compound, (B) a sulfonic acid group-contg. fluorocarbon polymer [e.g. composed of recurring unit of the formula ((x) is 0-2; (y) is 2 or 3; (l) and (m) are each >=1 and satisfy the relationship: (l/m)=1-10). This composition is obtained, for example, by immersing the component B in the component A, or by coating the component A with the component B, followed by, as necessary, performing a ultrasonic irradiation or heating, to dissolve the component B in the component A at 0-250 deg.C (pref. 10-200 deg.C).

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、スルホン酸基含有
フルオロカーボン重合体の溶解組成物及び溶解方法に関
するものである。
The present invention relates to a dissolving composition and a dissolving method for a sulfonic acid group-containing fluorocarbon polymer.

【0002】[0002]

【従来の技術】スルホン酸基含有フルオロカーボン重合
体は、液体透過工程、ガス透過工程、電気分解、燃料電
池、透析および逆浸透法における膜材料などに用いられ
る。また、その溶解組成物は膜材料の製造に、あるいは
すでに製造された膜の補修に、さらにはコーティング材
として極めて有用である。
2. Description of the Related Art Sulfonic acid group-containing fluorocarbon polymers are used in liquid permeation processes, gas permeation processes, electrolysis, fuel cells, dialysis and reverse osmosis membrane materials. Further, the dissolved composition is extremely useful for producing a membrane material, for repairing a membrane already produced, and as a coating material.

【0003】ところで、該重合体の溶解性が極めて低い
ことから、該重合体を溶媒に溶解させるための様々な技
術が提案されてきている。例えば、特開昭57−182
345号公報、Journal of Electro
analytical Chemistry,199巻
P.81(1986)には、リン酸ヘキサメチルトリ
アミドを使う方法、特開昭57−182346号公報に
は、1,3−ジメチル−2−イミダゾリジノンを使う方
法、Journal of Electroanaly
tical Chemistry,200巻 P.37
9(1986)にはN,N−ジメチルアセトアミドを使
う方法等が開示されている。
Meanwhile, since the solubility of the polymer is extremely low, various techniques for dissolving the polymer in a solvent have been proposed. For example, JP-A-57-182
No. 345, Journal of Electro
Analytical Chemistry, vol. 81 (1986), a method using phosphoric acid hexamethyltriamide, JP-A-57-182346, a method using 1,3-dimethyl-2-imidazolidinone, Journal of Electroanalysis
physical Chemistry, vol. 37
9 (1986) discloses a method using N, N-dimethylacetamide and the like.

【0004】しかしながら、該重合体は側鎖に超強酸性
である−CF2 SO3 Hをもつため、酸に敏感な官能基
をもつ溶媒は、酸による分解反応が起こりうる。実際に
リン酸ヘキサメチルトリアミド、N,N−ジメチルアセ
トアミドを使った場合、再生膜中に溶媒の分解反応で生
じたジメチルアンモニウムカチオンが含有されているこ
とが確認されている(Journal of Elec
troanalytical Chemistry,1
99巻 P.81(1986)、同200巻P.379
(1986))。特開昭57−192464号公報等に
は水と低級アルコール等の混合溶媒を使う方法が開示さ
れているが、たとえば、沸騰溶媒中に該重合体の粉末を
投入し、オートクレーブ中で数時間から1昼夜加熱を継
続して溶解するものであり、製造プロセスは煩雑であ
る。特開平7−76644号公報にはエタノール等の含
酸素炭化水素と含フッ素化合物の混合溶媒を使う方法が
開示されているが、低い当量重量を有する該重合体を溶
解する場合は、常温下、超音波照射で溶解するが、高い
当量重量を有する該重合体を溶解する場合は加圧下での
加熱が必要であり、やはり製造プロセスは煩雑なもので
あった。さらにこの時、該重合体が側鎖に超強酸性基を
もつため、エタノールは危険性の高いジエチルエーテル
を生じるという問題もあった。
However, since the polymer has —CF 2 SO 3 H, which is super-acidic in the side chain, a solvent having an acid-sensitive functional group may undergo a decomposition reaction by the acid. When hexamethyltriamide phosphate and N, N-dimethylacetamide were actually used, it was confirmed that the regenerated membrane contained dimethylammonium cations generated by the decomposition reaction of the solvent (Journal of Elec).
Troanalytical Chemistry, 1
99 Vol. 81 (1986), volume 200, p. 379
(1986)). Japanese Patent Application Laid-Open No. 57-192264 discloses a method of using a mixed solvent of water and a lower alcohol. The heating is continued for one day and night to melt, and the manufacturing process is complicated. Japanese Patent Application Laid-Open No. 7-76644 discloses a method using a mixed solvent of an oxygen-containing hydrocarbon such as ethanol and a fluorine-containing compound, but when dissolving the polymer having a low equivalent weight, at room temperature, The polymer is dissolved by ultrasonic irradiation, but when the polymer having a high equivalent weight is dissolved, heating under pressure is necessary, and the production process is also complicated. Further, at this time, since the polymer has a very strong acidic group in a side chain, there is a problem that ethanol generates diethyl ether which is highly dangerous.

【0005】[0005]

【発明が解決しようとする課題】本発明は、従来の欠点
を解消したスルホン酸基含有フルオロカーボン重合体溶
解組成物と溶解方法を提供しようとするものである。
An object of the present invention is to provide a sulfonic acid group-containing fluorocarbon polymer dissolving composition and a dissolving method which have solved the conventional disadvantages.

【0006】[0006]

【課題を解決するための手段】本発明は、ニトリル基含
有炭化水素と含フッ素有機化合物との混合溶媒に、スル
ホン酸基含有フルオロカーボン重合体を溶解してなるス
ルホン酸基含有フルオロカーボン重合体溶解組成物、お
よびニトリル基含有炭化水素と含フッ素有機化合物の混
合溶媒を用いるスルホン酸基含有フルオロカーボン重合
体の溶解方法である。
According to the present invention, there is provided a sulfonic acid group-containing fluorocarbon polymer dissolved composition obtained by dissolving a sulfonic acid group-containing fluorocarbon polymer in a mixed solvent of a nitrile group-containing hydrocarbon and a fluorine-containing organic compound. And a method for dissolving a sulfonic acid group-containing fluorocarbon polymer using a mixed solvent of a nitrile group-containing hydrocarbon and a fluorine-containing organic compound.

【0007】以下、本発明を詳細に説明する。本発明に
おいて用いられるニトリル基含有炭化水素としては、ア
セトニトリル、プロピオニトリル、ブチロニトリル、バ
レロニトリル、イソブチロニトリル等のアルカンニトリ
ル類、マロノニトリル、スクシノニトリル、アジポニト
リル等のアルカンジニトリル類、ベンゾニトリル等のア
リールニトリル類があげられ、好ましくは炭素数10以
下で炭素数/ニトリル基数比が1.5〜7、より好まし
くは1.5〜4である。
Hereinafter, the present invention will be described in detail. Examples of the nitrile group-containing hydrocarbon used in the present invention include alkane nitriles such as acetonitrile, propionitrile, butyronitrile, valeronitrile, isobutyronitrile, alkandinitrile such as malononitrile, succinonitrile, adiponitrile, and benzonitrile. And the like, preferably having 10 or less carbon atoms and a carbon number / nitrile group ratio of 1.5 to 7, more preferably 1.5 to 4.

【0008】含フッ素有機化合物とは、炭化水素等の有
機化合物の水素の一部又は全部がフッ素で置換されたも
のであり、分子内に酸素、窒素、硫黄、塩素、臭素、ヨ
ウ素等を含んでいても良い。具体例を例示すれば、HC
FC−141b(1,1−ジクロロ−1−フルオロエタ
ン)、HCFC−123(2,2,2−トリフルオロ−
1,1−ジクロロエタン)、HCFC−225(ジクロ
ロペンタフルオロプロパン)等のハイドロクロロフルオ
ロカーボン類(HCFC類)、HFC−236ea
(1,1,1,2,3,3−ヘキサフルオロプロパ
ン)、HFC−338pcc(1,1,2,2,3,
3,4,4−オクタフルオロプロパン)、HFC−43
−10mee(1,1,1,2,3,4,4,5,5,
5−デカフルオロペンタン)、HFC−53−12my
ee(1,1,1,2,3,4,5,5,5−ノナフル
オロ−2−(トリフルオロメチル)ペンタン)、HFC
−53−12mecce(1,1,1,2,3,3,
3,4,4,5,6,6,6−ドデカフルオロヘキサ
ン)、HFC−53−13mccy(1,1,1,2,
3,4,4,5,5,5−デカフルオロ−2−(トリフ
ルオロメチル)ペンタン)等のハイドロフルオロカーボ
ン類(HFC類)、FCC−51−12mym(1,
2,3,3,4,4−ヘキサフルオロ−1,2−ジ(ト
リフルオロメチル)シクロブタン)、R−71−18
(パーフルオロオクタン)、R−61−16(パーフル
オロヘプタン)、R−51−14(パーフルオロヘキサ
ン)等のパーフルオロカーボン類、HFE−347
(1,1,2,2−テトラフルオロエチル−1,1,1
−トリフルオロエチルエーテル)、HFE−356me
c(メチル−1,1,1,2,3,3−ヘキサフルオロ
プロピルエーテル)、HFE−7100(パーフルオロ
ブチルメチルエーテル)、HFE−7200(パーフル
オロブチルエチルエーテル)等のハイドロフルオロエー
テル類(HFE類)、2,2,2−トリフルオロエタノ
ール、2,2,3,3,3−ペンタフルオロプロパノー
ル、2−パーフルオロプロポキシ−2,3,3,3−テ
トラフルオロプロパノール、2−フルオロエタノール、
2H−ヘキサフルオロ−2−プロパノール、1H,1
H,3H−ヘキサフルオロブタノール、2,2−ビス
(トリフルオロメチル)プロパノール等の含フッ素アル
コール類から選ばれる少なくとも1種のものを使用する
ことができる。これらの中で含フッ素有機化合物として
は、塩素を含まない化合物がオゾン層を破壊しないので
好ましく、分子中のカーボン数と同数以上のフッ素を有
する化合物がさらに好ましい。この他、CFC−113
等のクロロフルオロカーボン類(CFC類)も含フッ素
有機化合物として用いることが可能であるが、CFC類
はオゾン層を破壊するので、その使用は好ましくない。
[0008] The fluorine-containing organic compound is a compound in which part or all of hydrogen of an organic compound such as hydrocarbon is substituted with fluorine, and contains oxygen, nitrogen, sulfur, chlorine, bromine, iodine and the like in the molecule. You can go out. To give a specific example, HC
FC-141b (1,1-dichloro-1-fluoroethane), HCFC-123 (2,2,2-trifluoro-
Hydrochlorofluorocarbons (HCFCs) such as 1,1-dichloroethane) and HCFC-225 (dichloropentafluoropropane); HFC-236ea
(1,1,1,2,3,3-hexafluoropropane), HFC-338pcc (1,1,2,2,3,3)
3,4,4-octafluoropropane), HFC-43
-10mee (1,1,1,2,3,4,4,5,5
5-decafluoropentane), HFC-53-12my
ee (1,1,1,2,3,4,5,5,5-nonafluoro-2- (trifluoromethyl) pentane), HFC
−53−12mecse (1,1,1,2,3,3,
3,4,4,5,6,6,6-dodecafluorohexane), HFC-53-13mccy (1,1,1,2,2,
Hydrofluorocarbons (HFCs) such as 3,4,4,5,5,5-decafluoro-2- (trifluoromethyl) pentane), FCC-51-12mym (1,
2,3,3,4,4-hexafluoro-1,2-di (trifluoromethyl) cyclobutane), R-71-18
Perfluorocarbons such as (perfluorooctane), R-61-16 (perfluoroheptane), and R-51-14 (perfluorohexane), and HFE-347.
(1,1,2,2-tetrafluoroethyl-1,1,1
-Trifluoroethyl ether), HFE-356me
Hydrofluoroethers such as c (methyl-1,1,1,2,3,3-hexafluoropropyl ether), HFE-7100 (perfluorobutyl methyl ether), and HFE-7200 (perfluorobutyl ethyl ether) ( HFEs), 2,2,2-trifluoroethanol, 2,2,3,3,3-pentafluoropropanol, 2-perfluoropropoxy-2,3,3,3-tetrafluoropropanol, 2-fluoroethanol ,
2H-hexafluoro-2-propanol, 1H, 1
At least one selected from fluorinated alcohols such as H, 3H-hexafluorobutanol and 2,2-bis (trifluoromethyl) propanol can be used. Among these, as the fluorine-containing organic compound, a compound containing no chlorine is preferable because it does not destroy the ozone layer, and a compound having fluorine equal to or more than the number of carbon atoms in the molecule is more preferable. In addition, CFC-113
Although chlorofluorocarbons (CFCs) and the like can be used as the fluorine-containing organic compound, the use of CFCs is not preferable because they destroy the ozone layer.

【0009】本発明で溶解されるスルホン酸基含有フル
オロカーボン重合体の好ましい例としては、下記[1]
式で示される構造式を繰り返し単位とするものがあげら
れる。
Preferred examples of the sulfonic acid group-containing fluorocarbon polymer dissolved in the present invention include the following [1]
Examples include those having a structural formula represented by the formula as a repeating unit.

【0010】[0010]

【化1】 Embedded image

【0011】(式中、x=0〜2の整数、y=2〜3の
整数、lとmは、l≧1、m≧1、l/m=1〜10を
満たす整数である。) スルホン酸基含有フルオロカーボン重合体のイオン交換
容量は、溶解性に関連し充分な溶解性をもたらしめるた
めには、当量重量が250〜2000g/eq、好まし
くは850〜1200g/eqである。該重合体の形状
は膜状、シート状または粒状のいずれでもよい。このよ
うな重合体としては、du Pont社製のNafio
n(登録商標)、旭化成工業(株)製の アシプレック
ス−S(登録商標)が知られている。
(Where x is an integer from 0 to 2, y is an integer from 2 to 3, and l and m are integers satisfying l ≧ 1, m ≧ 1, and l / m = 1 to 10.) The ion exchange capacity of the sulfonic acid group-containing fluorocarbon polymer has an equivalent weight of 250 to 2000 g / eq, preferably 850 to 1200 g / eq, in order to bring about sufficient solubility in relation to solubility. The shape of the polymer may be any of a film, a sheet, and a particle. Examples of such a polymer include Nafio manufactured by du Pont.
n (registered trademark) and Aciplex-S (registered trademark) manufactured by Asahi Kasei Corporation are known.

【0012】本発明において、ニトリル基含有炭化水素
と含フッ素有機化合物との混合溶媒を用いて、スルホン
酸基含有フルオロカーボン重合体を溶解させる場合、混
合溶媒に該重合体を浸漬させるか、または混合溶媒を該
重合体に塗布して溶解させる方法などがある。溶解を速
めるために必要に応じて、超音波照射や加熱をおこなっ
てもよい。
In the present invention, when a sulfonic acid group-containing fluorocarbon polymer is dissolved in a mixed solvent of a nitrile group-containing hydrocarbon and a fluorine-containing organic compound, the polymer is immersed in the mixed solvent or mixed. There is a method in which a solvent is applied to the polymer and dissolved. Ultrasonic irradiation or heating may be performed as necessary to accelerate dissolution.

【0013】溶解温度は0〜250℃、好ましくは10
〜200℃の範囲で溶解できる。ニトリル基含有炭化水
素と含フッ素有機化合物との混合比は、重量%で5〜9
5:95〜5、好ましくは10〜90:90〜10の範
囲である。上記の範囲をはずれると、スルホン酸基含有
フルオロカーボン重合体の溶解性が低下するなどの不都
合が生じる。また、本発明の溶解組成物を他の溶媒で希
釈して用いてもよい。
The dissolution temperature is 0 to 250 ° C., preferably 10
Can be dissolved in the range of -200 ° C. The mixing ratio of the nitrile group-containing hydrocarbon and the fluorine-containing organic compound is 5 to 9% by weight.
The range is 5:95 to 5, preferably 10 to 90:90 to 10. If the ratio is out of the above range, problems such as a decrease in solubility of the sulfonic acid group-containing fluorocarbon polymer occur. Further, the dissolution composition of the present invention may be used after being diluted with another solvent.

【0014】本発明の溶解組成物中のスルホン酸基含有
フルオロカーボン重合体濃度は、0.05重量%以上、
好ましくは0.1〜20重量%である。本発明で得られ
るスルホン酸基含有フルオロカーボン重合体の溶解組成
物は様々な用途に使用できるが、特に、該溶解組成物を
注型するか、または、ポリテトラフルオロエチレン等の
多孔体に該溶解組成物を含浸させることにより、電解
用、透析用または燃料電池用などの任意の形状のフィル
ムを作るのに好適であり、またこのようにして作ったフ
ィルムまたは他のフィルムのピンホールなどの損傷個所
を修復するのに極めて有効である。さらに該溶解組成物
を使用することにより、スペーサーネットなどの物体の
表面被覆とするにも極めて便利である。
[0014] The concentration of the sulfonic acid group-containing fluorocarbon polymer in the dissolution composition of the present invention is 0.05% by weight or more,
Preferably it is 0.1 to 20% by weight. The dissolving composition of the sulfonic acid group-containing fluorocarbon polymer obtained in the present invention can be used for various applications. In particular, the dissolving composition is cast or dissolved in a porous material such as polytetrafluoroethylene. The impregnation of the composition is suitable for making films of any shape, such as for electrolysis, dialysis or for fuel cells, and damages such as pinholes in films thus made or other films. It is extremely effective in repairing parts. Further, by using the dissolving composition, it is very convenient to form a surface coating on an object such as a spacer net.

【0015】[0015]

【発明の実施の形態】以下、実施例、比較例に基づいて
本発明について詳細に説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on examples and comparative examples.

【0016】[0016]

【実施例1】2,2,3,3,3−ペンタフルオロプロ
パノール20g、プロピオニトリル20gの混合溶媒
に、スルホン酸基含有フルオロカーボン重合体として旭
化成工業(株)製のアシプレックス−S1002膜(当
量重量950g/eq)0.25gを入れて15時間加
熱還流した。その結果、スルホン酸基含有フルオロカー
ボン重合体は完全に溶解した。
Example 1 Aciplex-S1002 membrane (available from Asahi Kasei Corporation) as a sulfonic acid group-containing fluorocarbon polymer in a mixed solvent of 2,2,3,3,3-pentafluoropropanol (20 g) and propionitrile (20 g) 0.25 g of an equivalent weight (950 g / eq) was added thereto, and the mixture was heated under reflux for 15 hours. As a result, the sulfonic acid group-containing fluorocarbon polymer was completely dissolved.

【0017】[0017]

【実施例2】2,2,3,3,3−ペンタフルオロプロ
パノールのかわりに2,2,2−トリフルオロエタノー
ルを用いた以外は実施例1と同様にして行った。その結
果、スルホン酸基含有フルオロカーボン重合体は完全に
溶解した。
Example 2 The procedure of Example 1 was repeated except that 2,2,2-trifluoroethanol was used instead of 2,2,3,3,3-pentafluoropropanol. As a result, the sulfonic acid group-containing fluorocarbon polymer was completely dissolved.

【0018】[0018]

【実施例3】2,2,3,3,3−ペンタフルオロプロ
パノールのかわりに2−パ−フルオロプロポキシ−2,
3,3,3−テトラフルオロプロパノールを用いた以外
は実施例1と同様にして行った。その結果、スルホン酸
基含有フルオロカーボン重合体は完全に溶解した。
Example 3 Instead of 2,2,3,3,3-pentafluoropropanol, 2-perfluoropropoxy-2,
The procedure was performed in the same manner as in Example 1 except that 3,3,3-tetrafluoropropanol was used. As a result, the sulfonic acid group-containing fluorocarbon polymer was completely dissolved.

【0019】[0019]

【実施例4】2,2,3,3,3−ペンタフルオロプロ
パノールのかわりに2H−ヘキサフルオロ−2−プロパ
ノールを用いた以外は実施例1と同様にして行った。そ
の結果、スルホン酸基含有フルオロカーボン重合体は完
全に溶解した。
Example 4 The procedure of Example 1 was repeated, except that 2H-hexafluoro-2-propanol was used instead of 2,2,3,3,3-pentafluoropropanol. As a result, the sulfonic acid group-containing fluorocarbon polymer was completely dissolved.

【0020】[0020]

【実施例5】2,2,3,3,3−ペンタフルオロプロ
パノールのかわりにHFE−7100(3M社製)を用
いた以外は実施例1と同様にして行った。その結果、ス
ルホン酸基含有フルオロカーボン重合体は完全に溶解し
た。
Example 5 The same procedure as in Example 1 was carried out except that HFE-7100 (manufactured by 3M) was used instead of 2,2,3,3,3-pentafluoropropanol. As a result, the sulfonic acid group-containing fluorocarbon polymer was completely dissolved.

【0021】[0021]

【実施例6】プロピオニトリルのかわりにアセトニトリ
ルを用いた以外は実施例1と同様にして行った。その結
果、スルホン酸基含有フルオロカーボン重合体は完全に
溶解した。
Example 6 The procedure was performed in the same manner as in Example 1 except that acetonitrile was used instead of propionitrile. As a result, the sulfonic acid group-containing fluorocarbon polymer was completely dissolved.

【0022】[0022]

【比較例1】溶媒として、2,2,3,3,3−ペンタ
フルオロプロパノールのみを用いた以外は実施例1と同
様にして行った。その結果、スルホン酸基含有フルオロ
カーボン重合体は膨潤するが溶解しなかった。
Comparative Example 1 The same procedure as in Example 1 was carried out except that only 2,2,3,3,3-pentafluoropropanol was used as a solvent. As a result, the sulfonic acid group-containing fluorocarbon polymer swelled but did not dissolve.

【0023】[0023]

【比較例2】溶媒として、プロピオニトリルのみを用い
た以外は実施例1と同様にして行った。その結果、スル
ホン酸基含有フルオロカーボン重合体は膨潤するが溶解
しなかった。
Comparative Example 2 The same procedure as in Example 1 was carried out except that only propionitrile was used as a solvent. As a result, the sulfonic acid group-containing fluorocarbon polymer swelled but did not dissolve.

【0024】[0024]

【発明の効果】本発明により、スルホン酸基含有フルオ
ロカーボン重合体を速やかに溶解することが可能であ
る。さらに、高価なスルホン酸基含有フルオロカーボン
重合体の膜を再生、再利用することが可能となった。
According to the present invention, it is possible to rapidly dissolve a sulfonic acid group-containing fluorocarbon polymer. Furthermore, it has become possible to regenerate and reuse expensive sulfonic acid group-containing fluorocarbon polymer membranes.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 ニトリル基含有炭化水素と含フッ素有機
化合物との混合溶媒に、スルホン酸基含有フルオロカー
ボン重合体が溶解されてなるスルホン酸基含有フルオロ
カーボン重合体溶解組成物。
1. A sulfonic acid group-containing fluorocarbon polymer-dissolved composition comprising a sulfonic acid group-containing fluorocarbon polymer dissolved in a mixed solvent of a nitrile group-containing hydrocarbon and a fluorine-containing organic compound.
【請求項2】 ニトリル基含有炭化水素と含フッ素有機
化合物の混合溶媒を用いて、スルホン酸基含有フルオロ
カーボン重合体を溶解するスルホン酸基含有フルオロカ
ーボン重合体の溶解方法。
2. A method for dissolving a sulfonic acid group-containing fluorocarbon polymer by using a mixed solvent of a nitrile group-containing hydrocarbon and a fluorine-containing organic compound.
JP5039698A 1998-03-03 1998-03-03 Dissolved composition of sulfonic acid group-containing fluorocarbon polymer Withdrawn JPH11246669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5039698A JPH11246669A (en) 1998-03-03 1998-03-03 Dissolved composition of sulfonic acid group-containing fluorocarbon polymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5039698A JPH11246669A (en) 1998-03-03 1998-03-03 Dissolved composition of sulfonic acid group-containing fluorocarbon polymer

Publications (1)

Publication Number Publication Date
JPH11246669A true JPH11246669A (en) 1999-09-14

Family

ID=12857726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5039698A Withdrawn JPH11246669A (en) 1998-03-03 1998-03-03 Dissolved composition of sulfonic acid group-containing fluorocarbon polymer

Country Status (1)

Country Link
JP (1) JPH11246669A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004078842A1 (en) * 2003-03-03 2004-09-16 Daikin Industries Ltd. Liquid fluoropolymer composition, process for producing organosol, film, and fuel cell
JP2007525802A (en) * 2004-01-23 2007-09-06 ザ ユニバーシティ オブ ノース カロライナ アット チャペル ヒル Liquid material for use in electrochemical cells
WO2023190793A1 (en) * 2022-03-31 2023-10-05 日東電工株式会社 Method for producing resin solution

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004078842A1 (en) * 2003-03-03 2004-09-16 Daikin Industries Ltd. Liquid fluoropolymer composition, process for producing organosol, film, and fuel cell
JPWO2004078842A1 (en) * 2003-03-03 2006-06-08 ダイキン工業株式会社 Fluoropolymer liquid composition, organosol production method, membrane and fuel cell
JP2007525802A (en) * 2004-01-23 2007-09-06 ザ ユニバーシティ オブ ノース カロライナ アット チャペル ヒル Liquid material for use in electrochemical cells
WO2023190793A1 (en) * 2022-03-31 2023-10-05 日東電工株式会社 Method for producing resin solution

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