WO2001028989A1 - Procede de production de derive d'acide perfluoro (ether vinyle) sulfonique - Google Patents
Procede de production de derive d'acide perfluoro (ether vinyle) sulfonique Download PDFInfo
- Publication number
- WO2001028989A1 WO2001028989A1 PCT/JP2000/007266 JP0007266W WO0128989A1 WO 2001028989 A1 WO2001028989 A1 WO 2001028989A1 JP 0007266 W JP0007266 W JP 0007266W WO 0128989 A1 WO0128989 A1 WO 0128989A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- formula
- general formula
- metal ion
- parts
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 150000003458 sulfonic acid derivatives Chemical class 0.000 title claims 2
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 title 1
- 150000001875 compounds Chemical class 0.000 claims abstract description 22
- 239000003054 catalyst Substances 0.000 claims abstract description 21
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 18
- 238000005979 thermal decomposition reaction Methods 0.000 claims abstract description 14
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 8
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 8
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 7
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 16
- -1 perfluorovinyl ether sulfonic acid derivative Chemical class 0.000 claims description 14
- 239000011734 sodium Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 12
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 claims description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 claims description 4
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 150000003983 crown ethers Chemical class 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000000178 monomer Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 11
- 239000007858 starting material Substances 0.000 description 9
- 239000002904 solvent Substances 0.000 description 8
- 239000006227 byproduct Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 5
- 239000012442 inert solvent Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 2
- HUCVOHYBFXVBRW-UHFFFAOYSA-M caesium hydroxide Chemical compound [OH-].[Cs+] HUCVOHYBFXVBRW-UHFFFAOYSA-M 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229920000554 ionomer Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- RVGLUKRYMXEQAH-UHFFFAOYSA-N 3,3-dimethyloxetane Chemical compound CC1(C)COC1 RVGLUKRYMXEQAH-UHFFFAOYSA-N 0.000 description 1
- DLFVBJFMPXGRIB-UHFFFAOYSA-N Acetamide Chemical compound CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical group COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- 229920003935 Flemion® Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 235000008429 bread Nutrition 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 150000002221 fluorine Chemical class 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 239000003930 superacid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/02—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof
- C07C303/22—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof from sulfonic acids, by reactions not involving the formation of sulfo or halosulfonyl groups; from sulfonic halides by reactions not involving the formation of halosulfonyl groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/32—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of salts of sulfonic acids
Definitions
- the present invention relates to an efficient method for producing a perfluorovinyl ether sulfonic acid derivative represented by the following formula ( ⁇ ).
- M represents an alkali metal or 12 (alkaline earth metal).
- n indicates 0, 1 or 2.
- fluorine ionomers include copolymers having a sulfonic acid group or a carboxyl group bonded to a perfluorinated polymer chain, such as Nafion® and Flemion®. These have been developed as ion exchange membranes mainly used for salt electrolysis, and their potential for use as chemical sensors, separation membranes, polymer superacid catalysts, and proton transport polymer electrolytes in fuel cells has been studied. I have.
- perfluorovinylethersulfonate derivative (II) which is a raw material for producing this fluorine ionomer, can be produced by thermal decomposition of the corresponding raw material compound (I) according to the following scheme. (Refer to W098 Z 439 52 No. 2 bread fret).
- An object of the present invention is to provide a compound represented by the general formula (II)
- F 2 C : CF OCF 2 CF-) ; r -OCF 2 CF2S03M ( u )
- a pyrolysis reaction can be promoted by performing a thermal decomposition reaction in the presence of a catalyst having a coordinating ability to metal ions M such as diglyme, and It has been found that the generation of by-products can be suppressed at the same time as the suppression of the residual.
- the present invention provides a method for producing the following perfluorovinyl ether sulfonic acid derivative.
- M represents an alkali metal or an alkaline earth metal.
- n represents 0, 1 or 2.
- M represents an alkali metal or an alkaline earth metal.
- n represents 0, 1 or 2.
- Item 3 Item 1 in which the catalyst capable of coordinating the metal ion M is a glyme compound. Manufacturing method.
- Item 4 The grime-based conjugation product according to item 3, wherein the glyme conjugate is at least one member selected from the group consisting of diethylene glycol dimethyl ether, diethylene glycol dimethyl ether, dimethyl oxetane, dietoxetane, tetraglyme, and clay ether. Manufacturing method.
- Item 5 The production method according to Item 4, wherein the glyme compound is diglyme.
- Item 7 An item in which the amount of the catalyst having a coordination ability to the metal ion M is about 0.1 to about 100 parts by weight per 100 parts by weight of the raw material compound represented by the general formula (I). The production method according to 1.
- Item 8 The amount of the catalyst having a coordination ability to the metal ion M is from about 0.1 to about 10 parts by weight per 100 parts by weight of the raw material compound represented by the general formula (I). Production method described in 1.
- Item 9 The method according to Item 1, wherein M is an alkali metal.
- Item 10 The method according to Item 1, wherein M is sodium.
- the starting compound represented by the general formula (I) used in the method of the present invention is known, and can be produced, for example, by the method described in WO98 / 43952 pamphlet.
- MOH indicates a case where M is an alkali metal
- M (OH) 2 indicates a case where M is an alkaline earth metal
- the starting compound of the general formula (IV) is described in WO98 / 43995.
- the catalyst having a coordinating ability to the metal ion M include glyme compounds such as diethylene glycol dimethyl ether (diglyme), diethylene glycol getyl ether, dimethyl oxyne, jetoxetane, tetraglyme, and crown ether; dioxane; dimethyl.
- examples include acetoamide, dimethyl sulfoxide and the like.
- Other examples include alcohols, esters, and ketones.
- the lime-based compound is a hydrocarbon-based ether-based compound, and is a compound represented by the following general formula.
- R is C m H 2 m + 1, m 1 ⁇ 5, n represents a 1 to 1 0.
- the thermal decomposition can be performed in a solid state, or can be performed by dispersing or dissolving in a solvent.
- the above-described catalyst itself can be used as a solvent, or an inert liquid can be used as a solvent. Since it is difficult to completely dehydrate a catalyst having a coordination ability to metal ions, fluorocarbons, which are more easily dehydrated, are preferred as the inert solvent.
- n 0, 1 or 2, preferably 0 or 1, more preferably 0.
- the amount of the catalyst capable of coordinating the metal ion M may be about 0.1 to 100 parts by weight of the raw material compound represented by the general formula (I) when the thermal decomposition reaction is performed in an inert solvent. It is preferably about 1000 parts by weight, more preferably about 0.1 to about 10 parts by weight, particularly preferably about 1 to about 5 parts by weight.
- This catalyst may be used in large amounts, in which case the starting compound About 200 parts by weight per 100 parts by weight: L000 parts by weight, preferably about 200 to 300 parts by weight. When the catalyst itself is used as the solvent, the amount is about 500 to 100 parts by weight per 100 parts by weight of the starting compound.
- the metal ion M means an alkali metal ion such as Na +, K + , Li +, Cs +, or an alkaline earth metal ion such as l / 2Ca2 + , l / 2Mg2 +. I do.
- the pyrolysis reaction of the present invention is generally carried out at about 100 ° C. or higher, preferably at about 150 ° C. to about 250 ° C., particularly preferably at about 170 to about 230, and preferably at about 170 to about 230. Terminating the reaction at a temperature of 0 or more in a short time is advantageous for suppressing the generation of by-products.
- the preferred reaction time is from 10 to 120 minutes after reaching the predetermined reaction temperature. It is preferable to replace the inside of the reaction system with an inert gas such as nitrogen or argon.
- a mixture of a starting compound of the general formula (I), an inert solvent and a catalyst capable of coordinating to metal ion M is temperature-controlled to about 170 to about 230 in a cylindrical reaction.
- the reaction mixture is continuously supplied into a vessel, heated for a certain period of time, then the reaction solution is extracted, and after cooling, the product is separated and recovered from the solvent, and the solvent is reused.
- the method of the present invention is preferably carried out under anhydrous conditions, and anhydrous materials such as the raw material compound (I), the inert solvent, and the catalyst having a coordinating ability to the metal ion M are preferably used.
- anhydrous materials such as the raw material compound (I), the inert solvent, and the catalyst having a coordinating ability to the metal ion M are preferably used.
- a perfluorovinyl ether sulfonic acid derivative represented by the general formula (II), which is a raw material for producing a strongly acidic fluoropolymer electrolyte can be obtained in high yield, and the generation of by-products can be reduced. Can be suppressed.
- C1 (CF 2 CFC1) 3 brown granular powder dispersed in C1 was filtered with a glass filter and foremost, washed with a small amount of CF 3 CHC1 2, it was Shutoku granular powder slightly colored and air dried.
- the white residue on the filter was NaF.
- the filtrate was applied to an evaporator to evaporate water, and when the whole solidified almost in a wet state, it was once kept in a refrigerator of 5 for 1 hour, transferred to a glass filter, and subjected to filtration under reduced pressure at room temperature in the atmosphere for about 2 hours.
- a thermal decomposition reaction was performed in the same manner as in Example 1 except that diglyme was not added to the reaction.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00969886A EP1225167A4 (en) | 1999-10-19 | 2000-10-19 | METHOD FOR THE PRODUCTION OF PERFLUORO (VINYL ETHER) SULFONIC ACID DERIVATIVES |
US10/111,079 US6649790B1 (en) | 1999-10-19 | 2000-10-19 | Process for producing perfluoro(vinyl ether) sulfonic acid derivative |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11/296639 | 1999-10-19 | ||
JP29663999A JP2001114750A (ja) | 1999-10-19 | 1999-10-19 | パーフルオロビニルエーテルスルホン酸誘導体の製造法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001028989A1 true WO2001028989A1 (fr) | 2001-04-26 |
Family
ID=17836150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/007266 WO2001028989A1 (fr) | 1999-10-19 | 2000-10-19 | Procede de production de derive d'acide perfluoro (ether vinyle) sulfonique |
Country Status (4)
Country | Link |
---|---|
US (1) | US6649790B1 (ja) |
EP (1) | EP1225167A4 (ja) |
JP (1) | JP2001114750A (ja) |
WO (1) | WO2001028989A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1325906A1 (en) * | 2002-01-03 | 2003-07-09 | Solvay Solexis S.p.A. | Alkyl esters of 2-(2-fluorosulphonyl)-perfluoroethylenoxy-3-halogen-propionic acid |
WO2003106409A1 (ja) * | 2002-06-14 | 2003-12-24 | ダイキン工業株式会社 | 水溶性含フッ素ビニルエーテル製造方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102993059A (zh) * | 2012-12-17 | 2013-03-27 | 江南大学 | 一种n,n-二甲基-n-脂肪醇聚氧乙烯醚基羟丙磺基甜菜碱的制备方法 |
CN108084063A (zh) * | 2017-11-25 | 2018-05-29 | 山东华夏神舟新材料有限公司 | 全氟乙烯基醚磺酸盐的制备方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4358412A (en) * | 1980-06-11 | 1982-11-09 | The Dow Chemical Company | Preparation of vinyl ethers |
WO1998043952A1 (fr) * | 1997-03-31 | 1998-10-08 | Daikin Industries, Ltd. | Procede de production de derives d'acide ethersulfonique de perfluorovinyle et copolymere correspondant |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3144778A (en) * | 1962-04-05 | 1964-08-18 | American Mfg Company Of Texas | Pumping unit with improved flexibly connected beam |
IT1246357B (it) * | 1990-07-12 | 1994-11-17 | Ausimont Spa | Processo per la preparazione di composti perfluoroalcossisolfonici |
IT1313597B1 (it) * | 1999-08-04 | 2002-09-09 | Ausimont Spa | Lubrificanti perfluoropolieterei contenenti gruppi solfonilfluoruro |
-
1999
- 1999-10-19 JP JP29663999A patent/JP2001114750A/ja not_active Withdrawn
-
2000
- 2000-10-19 EP EP00969886A patent/EP1225167A4/en not_active Withdrawn
- 2000-10-19 US US10/111,079 patent/US6649790B1/en not_active Expired - Fee Related
- 2000-10-19 WO PCT/JP2000/007266 patent/WO2001028989A1/ja not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4358412A (en) * | 1980-06-11 | 1982-11-09 | The Dow Chemical Company | Preparation of vinyl ethers |
WO1998043952A1 (fr) * | 1997-03-31 | 1998-10-08 | Daikin Industries, Ltd. | Procede de production de derives d'acide ethersulfonique de perfluorovinyle et copolymere correspondant |
Non-Patent Citations (1)
Title |
---|
See also references of EP1225167A4 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1325906A1 (en) * | 2002-01-03 | 2003-07-09 | Solvay Solexis S.p.A. | Alkyl esters of 2-(2-fluorosulphonyl)-perfluoroethylenoxy-3-halogen-propionic acid |
WO2003106409A1 (ja) * | 2002-06-14 | 2003-12-24 | ダイキン工業株式会社 | 水溶性含フッ素ビニルエーテル製造方法 |
CN1332941C (zh) * | 2002-06-14 | 2007-08-22 | 大金工业株式会社 | 水溶性含氟乙烯基醚的制造方法 |
US7321071B2 (en) | 2002-06-14 | 2008-01-22 | Daikin Industries, Ltd. | Process for the production of water-soluble fluorine-containing vinyl ethers |
Also Published As
Publication number | Publication date |
---|---|
EP1225167A1 (en) | 2002-07-24 |
EP1225167A4 (en) | 2004-11-24 |
US6649790B1 (en) | 2003-11-18 |
JP2001114750A (ja) | 2001-04-24 |
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