GB1604102A - Laminar structures of fluorinated ion exchange polymers - Google Patents
Laminar structures of fluorinated ion exchange polymers Download PDFInfo
- Publication number
- GB1604102A GB1604102A GB15537/78A GB1553778A GB1604102A GB 1604102 A GB1604102 A GB 1604102A GB 15537/78 A GB15537/78 A GB 15537/78A GB 1553778 A GB1553778 A GB 1553778A GB 1604102 A GB1604102 A GB 1604102A
- Authority
- GB
- United Kingdom
- Prior art keywords
- groups
- laminar structure
- cell
- tetrafluoroethylene
- ion exchange
- 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.)
- Expired
Links
- 229920003303 ion-exchange polymer Polymers 0.000 title claims abstract description 14
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 238000007334 copolymerization reaction Methods 0.000 claims abstract description 7
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 41
- 229920000642 polymer Polymers 0.000 claims description 33
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 24
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 22
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 16
- 229910052801 chlorine Inorganic materials 0.000 claims description 16
- 239000000460 chlorine Substances 0.000 claims description 16
- 229920001577 copolymer Polymers 0.000 claims description 16
- -1 carbomethoxy Chemical group 0.000 claims description 14
- OBTWBSRJZRCYQV-UHFFFAOYSA-N sulfuryl difluoride Chemical group FS(F)(=O)=O OBTWBSRJZRCYQV-UHFFFAOYSA-N 0.000 claims description 14
- 239000000047 product Substances 0.000 claims description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 150000007942 carboxylates Chemical group 0.000 claims description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 238000005342 ion exchange Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 8
- 239000002585 base Substances 0.000 claims description 8
- 238000002329 infrared spectrum Methods 0.000 claims description 8
- 125000001153 fluoro group Chemical group F* 0.000 claims description 7
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical group [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 6
- 229910052783 alkali metal Inorganic materials 0.000 claims description 6
- 150000001342 alkaline earth metals Chemical group 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 235000019000 fluorine Nutrition 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- NHJFHUKLZMQIHN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanoyl 2,2,3,3,3-pentafluoropropaneperoxoate Chemical compound FC(F)(F)C(F)(F)C(=O)OOC(=O)C(F)(F)C(F)(F)F NHJFHUKLZMQIHN-UHFFFAOYSA-N 0.000 claims description 5
- TUFKHKZLBZWCAW-UHFFFAOYSA-N 2-(1-ethenoxypropan-2-yloxy)ethanesulfonyl fluoride Chemical compound C=COCC(C)OCCS(F)(=O)=O TUFKHKZLBZWCAW-UHFFFAOYSA-N 0.000 claims description 5
- 150000001340 alkali metals Chemical group 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000009102 absorption Effects 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000012263 liquid product Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000012265 solid product Substances 0.000 claims description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 4
- 239000002344 surface layer Substances 0.000 claims description 3
- FJSRPVWDOJSWBX-UHFFFAOYSA-N 1-chloro-4-[1-(4-chlorophenyl)-2,2,2-trifluoroethyl]benzene Chemical compound C=1C=C(Cl)C=CC=1C(C(F)(F)F)C1=CC=C(Cl)C=C1 FJSRPVWDOJSWBX-UHFFFAOYSA-N 0.000 claims description 2
- 239000004809 Teflon Substances 0.000 claims description 2
- 229920006362 Teflon® Polymers 0.000 claims description 2
- 125000004185 ester group Chemical group 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 229910052700 potassium Inorganic materials 0.000 claims description 2
- 239000011591 potassium Substances 0.000 claims description 2
- 150000004820 halides Chemical class 0.000 claims 1
- 229910052811 halogen oxide Inorganic materials 0.000 claims 1
- 150000002500 ions Chemical class 0.000 claims 1
- 229910000000 metal hydroxide Inorganic materials 0.000 claims 1
- 150000004692 metal hydroxides Chemical class 0.000 claims 1
- 239000000178 monomer Substances 0.000 abstract description 17
- 239000012528 membrane Substances 0.000 abstract description 10
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
- 239000003518 caustics Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 239000003014 ion exchange membrane Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000012267 brine Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 2
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000005349 anion exchange Methods 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- ZQBFAOFFOQMSGJ-UHFFFAOYSA-N hexafluorobenzene Chemical compound FC1=C(F)C(F)=C(F)C(F)=C1F ZQBFAOFFOQMSGJ-UHFFFAOYSA-N 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003461 sulfonyl halides Chemical class 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- TXGPGHBYAPBDAG-UHFFFAOYSA-N 1,1,2,2,3,3-hexafluoro-4,4-bis(trifluoromethyl)cyclobutane Chemical compound FC(F)(F)C1(C(F)(F)F)C(F)(F)C(F)(F)C1(F)F TXGPGHBYAPBDAG-UHFFFAOYSA-N 0.000 description 1
- VQUGQIYAVYQSAB-UHFFFAOYSA-N 1,1,2,2-tetrafluoro-2-(1,2,2-trifluoroethenoxy)ethanesulfonyl fluoride Chemical compound FC(F)=C(F)OC(F)(F)C(F)(F)S(F)(=O)=O VQUGQIYAVYQSAB-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical class C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- YVBBRRALBYAZBM-UHFFFAOYSA-N perfluorooctane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F YVBBRRALBYAZBM-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 150000003456 sulfonamides Chemical class 0.000 description 1
- 150000008054 sulfonate salts Chemical class 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 125000002128 sulfonyl halide group Chemical group 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F16/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F16/12—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
- C08F16/14—Monomers containing only one unsaturated aliphatic radical
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/20—Manufacture of shaped structures of ion-exchange resins
- C08J5/22—Films, membranes or diaphragms
- C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
- C08J5/2218—Synthetic macromolecular compounds
- C08J5/2231—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds
- C08J5/2237—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds containing fluorine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Laminated Bodies (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US78972577A | 1977-04-20 | 1977-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1604102A true GB1604102A (en) | 1981-12-02 |
Family
ID=25148505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15537/78A Expired GB1604102A (en) | 1977-04-20 | 1978-04-19 | Laminar structures of fluorinated ion exchange polymers |
Country Status (15)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2233252A (en) * | 1989-05-15 | 1991-01-09 | Pall Corp | Hydrophobic membranes |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4329435A (en) * | 1979-05-31 | 1982-05-11 | Asahi Kasei Kogyo Kabushiki Kaisha | Novel fluorinated copolymer with tridihydro fluorosulfonyl fluoride pendant groups and preparation thereof |
| DE3050931C2 (de) * | 1979-05-31 | 1994-06-09 | Asahi Chemical Ind | Fluorierte Carbonsäure-Derivate und Verfahren zu ihrer Herstellung |
| US4329434A (en) * | 1979-05-31 | 1982-05-11 | Asahi Kasei Kogyo Kabushiki Kaisha | Novel fluorinated cation exchange membrane and process for producing the same |
| DE3036066A1 (de) * | 1980-09-25 | 1982-05-06 | Hoechst Ag, 6000 Frankfurt | Verfahren zur herstellung eines elektroden-membran-verbundsystems |
| JPS5792028A (en) * | 1980-11-29 | 1982-06-08 | Asahi Chem Ind Co Ltd | Fluorocarbon cation exchange membrane |
| JPS58189210A (ja) * | 1982-04-30 | 1983-11-04 | Daikin Ind Ltd | テトラフルオロエチレン／フルオロ（アルキルビニルエ−テル）共重合体の製法 |
| WO1994003503A2 (en) * | 1992-07-30 | 1994-02-17 | Imperial Chemical Industries Plc | Fluorinated polymers |
| JP2003246906A (ja) * | 2002-02-25 | 2003-09-05 | Asahi Kasei Corp | フッ素系共重合体含有組成物 |
| US7071271B2 (en) * | 2003-10-30 | 2006-07-04 | 3M Innovative Properties Company | Aqueous emulsion polymerization of functionalized fluoromonomers |
| RU2267498C1 (ru) * | 2004-07-20 | 2006-01-10 | Открытое акционерное общество "Пластполимер" (ОАО "Пластполимер") | Линейный статистический терполимер тетрафторэтилена с функциональными перфторированными сомономерами и способ его получения |
| US9217045B2 (en) * | 2008-12-11 | 2015-12-22 | Solvay Specialty Polymers Italy S.P.A. | Purification of fluoroionomer compositions |
| RU2412948C1 (ru) * | 2009-09-15 | 2011-02-27 | Федеральное государственное унитарное предприятие "Российский научный центр "Прикладная химия" | Способ получения перфторированного сополимера с сульфогруппами |
| JP5799926B2 (ja) * | 2012-09-27 | 2015-10-28 | 旭硝子株式会社 | 含フッ素共重合体の製造方法 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3282875A (en) * | 1964-07-22 | 1966-11-01 | Du Pont | Fluorocarbon vinyl ether polymers |
| FR1527816A (fr) * | 1966-02-16 | 1968-06-07 | Du Pont | Alkyl-vinyl-éthers perfluorés portant des substituants, préparation de ces éthers par pyrolyse des sels correspondants, et leur utilisation comme composants de copolymères |
| US3784399A (en) * | 1971-09-08 | 1974-01-08 | Du Pont | Films of fluorinated polymer containing sulfonyl groups with one surface in the sulfonamide or sulfonamide salt form and a process for preparing such |
| US3849243A (en) * | 1971-11-08 | 1974-11-19 | Du Pont | Laminates of support material and fluorinated polymer containing pendant side chains containing sulfonyl groups |
| AU464313B2 (en) * | 1971-12-27 | 1975-08-21 | Hooker Chemicals And Plastics Coup | Electrolysis method and apparatus |
| JPS551351B2 (enrdf_load_stackoverflow) * | 1974-03-07 | 1980-01-12 | ||
| JPS5224176A (en) * | 1975-07-09 | 1977-02-23 | Asahi Chem Ind Co Ltd | Cathion exchange membrane |
| JPS5223192A (en) * | 1975-08-15 | 1977-02-21 | Asahi Glass Co Ltd | Preparation of improved fluoropolymer bearing cation exchange groups |
| JPS5228586A (en) * | 1975-08-29 | 1977-03-03 | Asahi Glass Co Ltd | Method for manufacturing an improved fluoropolymer having cation excha nge groups |
| GB1518387A (en) * | 1975-08-29 | 1978-07-19 | Asahi Glass Co Ltd | Fluorinated cation exchange membrane and use thereof in electrolysis of an alkali metal halide |
| JPS5228587A (en) * | 1975-08-29 | 1977-03-03 | Asahi Glass Co Ltd | Method for manufacturing an improved fluoropolymer having cation excha nge groups |
| JPS52120999A (en) * | 1976-04-05 | 1977-10-11 | Asahi Chem Ind Co Ltd | Electrolysis of alkali metal halides |
-
1978
- 1978-03-15 FR FR7807444A patent/FR2388012A1/fr active Pending
- 1978-04-17 AU AU35164/78A patent/AU525335B2/en not_active Ceased
- 1978-04-18 CA CA301,559A patent/CA1133425A/en not_active Expired
- 1978-04-18 JP JP4490778A patent/JPS53132089A/ja active Granted
- 1978-04-19 IT IT22494/78A patent/IT1094102B/it active
- 1978-04-19 GB GB15537/78A patent/GB1604102A/en not_active Expired
- 1978-04-19 NZ NZ187023A patent/NZ187023A/xx unknown
- 1978-04-19 BR BR787802433A patent/BR7802433A/pt unknown
- 1978-04-19 IL IL54540A patent/IL54540A/xx unknown
- 1978-04-19 MX MX173172A patent/MX151031A/es unknown
- 1978-04-19 SU SU782605603A patent/SU1165239A3/ru active
- 1978-04-19 BE BE186898A patent/BE866121A/xx not_active IP Right Cessation
- 1978-04-19 ZA ZA00782225A patent/ZA782225B/xx unknown
- 1978-04-20 NL NL7804221A patent/NL7804221A/xx not_active Application Discontinuation
- 1978-04-20 DE DE19782817344 patent/DE2817344A1/de active Granted
-
1983
- 1983-11-16 JP JP58214233A patent/JPS59211583A/ja active Pending
-
1988
- 1988-03-11 AU AU13048/88A patent/AU1304888A/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2233252A (en) * | 1989-05-15 | 1991-01-09 | Pall Corp | Hydrophobic membranes |
| GB2233252B (en) * | 1989-05-15 | 1992-11-18 | Pall Corp | Hydrophobic membranes |
Also Published As
| Publication number | Publication date |
|---|---|
| MX151031A (es) | 1984-09-12 |
| IL54540A0 (en) | 1978-07-31 |
| JPS59211583A (ja) | 1984-11-30 |
| CA1133425A (en) | 1982-10-12 |
| BE866121A (fr) | 1978-10-19 |
| IT1094102B (it) | 1985-07-26 |
| FR2388012A1 (fr) | 1978-11-17 |
| JPS53132089A (en) | 1978-11-17 |
| ZA782225B (en) | 1979-04-25 |
| IT7822494A0 (it) | 1978-04-19 |
| DE2817344A1 (de) | 1978-10-26 |
| AU525335B2 (en) | 1982-11-04 |
| JPS6356257B2 (enrdf_load_stackoverflow) | 1988-11-07 |
| NL7804221A (nl) | 1978-10-24 |
| AU3516478A (en) | 1979-10-25 |
| AU1304888A (en) | 1988-06-16 |
| DE2817344C2 (enrdf_load_stackoverflow) | 1990-11-15 |
| SU1165239A3 (ru) | 1985-06-30 |
| BR7802433A (pt) | 1979-01-16 |
| NZ187023A (en) | 1980-11-28 |
| IL54540A (en) | 1981-09-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |