CA1096093A - Phosphonated fluorotelomers - Google Patents
Phosphonated fluorotelomersInfo
- Publication number
- CA1096093A CA1096093A CA272,792A CA272792A CA1096093A CA 1096093 A CA1096093 A CA 1096093A CA 272792 A CA272792 A CA 272792A CA 1096093 A CA1096093 A CA 1096093A
- Authority
- CA
- Canada
- Prior art keywords
- fluorotelomer
- composition
- carbon atoms
- moiety
- mat
- 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
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002657 fibrous material Substances 0.000 claims abstract description 9
- 239000012267 brine Substances 0.000 claims abstract description 8
- 239000000460 chlorine Substances 0.000 claims abstract description 8
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 8
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000001257 hydrogen Substances 0.000 claims abstract description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 39
- -1 alkyl radicals Chemical class 0.000 claims description 28
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 26
- 125000004432 carbon atom Chemical group C* 0.000 claims description 24
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 17
- 239000011230 binding agent Substances 0.000 claims description 16
- 239000010425 asbestos Substances 0.000 claims description 15
- 229910052895 riebeckite Inorganic materials 0.000 claims description 15
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 13
- 150000003254 radicals Chemical class 0.000 claims description 13
- 150000002739 metals Chemical class 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 10
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 10
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 9
- 229920002313 fluoropolymer Polymers 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- 239000004811 fluoropolymer Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000000178 monomer Substances 0.000 claims description 7
- BZPCMSSQHRAJCC-UHFFFAOYSA-N 1,2,3,3,4,4,5,5,5-nonafluoro-1-(1,2,3,3,4,4,5,5,5-nonafluoropent-1-enoxy)pent-1-ene Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)=C(F)OC(F)=C(F)C(F)(F)C(F)(F)C(F)(F)F BZPCMSSQHRAJCC-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 125000001153 fluoro group Chemical group F* 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound 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 4
- 238000005342 ion exchange Methods 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 125000001246 bromo group Chemical group Br* 0.000 claims description 3
- 238000000502 dialysis Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 claims 9
- 238000010438 heat treatment Methods 0.000 claims 4
- 239000007864 aqueous solution Substances 0.000 claims 3
- 241000609103 Sarcophaga africa Species 0.000 claims 1
- 210000000170 cell membrane Anatomy 0.000 claims 1
- 239000003513 alkali Substances 0.000 abstract description 9
- 239000003014 ion exchange membrane Substances 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 210000004379 membrane Anatomy 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000002002 slurry Substances 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000012153 distilled water Substances 0.000 description 7
- BOSAWIQFTJIYIS-UHFFFAOYSA-N 1,1,1-trichloro-2,2,2-trifluoroethane Chemical compound FC(F)(F)C(Cl)(Cl)Cl BOSAWIQFTJIYIS-UHFFFAOYSA-N 0.000 description 6
- TVZISJTYELEYPI-UHFFFAOYSA-N hypodiphosphoric acid Chemical class OP(O)(=O)P(O)(O)=O TVZISJTYELEYPI-UHFFFAOYSA-N 0.000 description 5
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- RDXABLXNTVBVML-UHFFFAOYSA-N diethoxyphosphanyl diethyl phosphite Chemical compound CCOP(OCC)OP(OCC)OCC RDXABLXNTVBVML-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- PAOHAQSLJSMLAT-UHFFFAOYSA-N 1-butylperoxybutane Chemical compound CCCCOOCCCC PAOHAQSLJSMLAT-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 125000000753 cycloalkyl group Chemical group 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- AYCANDRGVPTASA-UHFFFAOYSA-N 1-bromo-1,2,2-trifluoroethene Chemical group FC(F)=C(F)Br AYCANDRGVPTASA-UHFFFAOYSA-N 0.000 description 1
- ODKSFYDXXFIFQN-UHFFFAOYSA-N Arginine Chemical compound OC(=O)C(N)CCCNC(N)=N ODKSFYDXXFIFQN-UHFFFAOYSA-N 0.000 description 1
- RRKBFOATFMNSPW-UHFFFAOYSA-N C=C(F)F.F Chemical compound C=C(F)F.F RRKBFOATFMNSPW-UHFFFAOYSA-N 0.000 description 1
- 101100164120 Caenorhabditis elegans asb-2 gene Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- SHLNMHIRQGRGOL-UHFFFAOYSA-N barium zinc Chemical compound [Zn].[Ba] SHLNMHIRQGRGOL-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000005649 metathesis reaction Methods 0.000 description 1
- VAOCPAMSLUNLGC-UHFFFAOYSA-N metronidazole Chemical compound CC1=NC=C([N+]([O-])=O)N1CCO VAOCPAMSLUNLGC-UHFFFAOYSA-N 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- HFFLGKNGCAIQMO-UHFFFAOYSA-N trichloroacetaldehyde Chemical compound ClC(Cl)(Cl)C=O HFFLGKNGCAIQMO-UHFFFAOYSA-N 0.000 description 1
- CWBIFDGMOSWLRQ-UHFFFAOYSA-N trimagnesium;hydroxy(trioxido)silane;hydrate Chemical compound O.[Mg+2].[Mg+2].[Mg+2].O[Si]([O-])([O-])[O-].O[Si]([O-])([O-])[O-] CWBIFDGMOSWLRQ-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
- C07F9/40—Esters thereof
- C07F9/4003—Esters thereof the acid moiety containing a substituent or a structure which is considered as characteristic
- C07F9/4025—Esters of poly(thio)phosphonic acids
-
- 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
- C08F14/00—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 a halogen
- C08F14/18—Monomers containing fluorine
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66307176A | 1976-03-02 | 1976-03-02 | |
| US663,071 | 1976-03-02 | ||
| US05/764,174 US4116890A (en) | 1976-03-02 | 1977-02-02 | Phosphonated fluorotelomers |
| US764,174 | 1977-02-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1096093A true CA1096093A (en) | 1981-02-17 |
Family
ID=27098663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA272,792A Expired CA1096093A (en) | 1976-03-02 | 1977-02-28 | Phosphonated fluorotelomers |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPS52118431A (ja) |
| AU (1) | AU508300B2 (ja) |
| BR (1) | BR7701283A (ja) |
| CA (1) | CA1096093A (ja) |
| DE (1) | DE2709097A1 (ja) |
| DK (1) | DK62277A (ja) |
| FR (1) | FR2343000A1 (ja) |
| GB (1) | GB1572863A (ja) |
| IT (1) | IT1086214B (ja) |
| LU (1) | LU76864A1 (ja) |
| NL (1) | NL7702186A (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63131610A (ja) * | 1986-11-20 | 1988-06-03 | Keyence Corp | 検出回路 |
| DE102007058600A1 (de) | 2007-12-04 | 2009-06-10 | Merck Patent Gmbh | Verwendung von Phosphinsäuren und/oder Phosphonsäuren in Polymerisationsverfahren |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2786827A (en) * | 1953-11-18 | 1957-03-26 | Kellogg M W Co | Phosphorus oxychloride-halogen-containing telomers and their preparation |
| US3054785A (en) * | 1958-12-05 | 1962-09-18 | Minnesota Mining & Mfg | Phosphorus containing polymers and method for the preparation thereof |
| US3139352A (en) * | 1962-08-08 | 1964-06-30 | Du Pont | Process of using a masking coating of a telomer of tetrafluoroethylene |
| US3853721A (en) * | 1971-09-09 | 1974-12-10 | Ppg Industries Inc | Process for electrolysing brine |
-
1977
- 1977-02-14 DK DK62277A patent/DK62277A/da unknown
- 1977-02-28 CA CA272,792A patent/CA1096093A/en not_active Expired
- 1977-02-28 IT IT2076877A patent/IT1086214B/it active
- 1977-03-01 NL NL7702186A patent/NL7702186A/xx not_active Application Discontinuation
- 1977-03-01 GB GB854577A patent/GB1572863A/en not_active Expired
- 1977-03-01 AU AU22821/77A patent/AU508300B2/en not_active Expired
- 1977-03-01 LU LU76864A patent/LU76864A1/xx unknown
- 1977-03-02 FR FR7706120A patent/FR2343000A1/fr active Granted
- 1977-03-02 JP JP2329777A patent/JPS52118431A/ja active Granted
- 1977-03-02 BR BR7701283A patent/BR7701283A/pt unknown
- 1977-03-02 DE DE19772709097 patent/DE2709097A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| IT1086214B (it) | 1985-05-28 |
| FR2343000B1 (ja) | 1982-09-24 |
| GB1572863A (en) | 1980-08-06 |
| BR7701283A (pt) | 1977-10-18 |
| JPS61353B2 (ja) | 1986-01-08 |
| DK62277A (da) | 1977-09-03 |
| FR2343000A1 (fr) | 1977-09-30 |
| AU2282177A (en) | 1978-09-07 |
| LU76864A1 (ja) | 1977-07-12 |
| AU508300B2 (en) | 1980-03-13 |
| DE2709097A1 (de) | 1977-09-08 |
| JPS52118431A (en) | 1977-10-04 |
| NL7702186A (nl) | 1977-09-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0041732B1 (en) | Electrolytic cell having an improved ion exchange membrane and process for operating | |
| US4433082A (en) | Process for making liquid composition of perfluorinated ion exchange polymer, and product thereof | |
| AU628580B2 (en) | A composite, porous diaphragm | |
| CA1323127C (en) | Solutions of fluoropolymers, and their use | |
| TWI424884B (zh) | Ion Exchange Membrane for Chloride Alkali Electrolysis | |
| US4341605A (en) | Process for cation permeable membrane with reinforcement fabric embedded therein and product thereof | |
| US4680101A (en) | Electrolyte permeable diaphragm including a polymeric metal oxide | |
| EP0068444A2 (en) | Solid polymer electrolytes and electrode bonded with hydrophyllic fluorocopolymers | |
| JPH0237936B2 (ja) | ||
| EP0032021A2 (en) | Cation exchange resin and production thereof, permselective membrane derived therefrom, and process for producing membrane | |
| TWI544953B (zh) | Fluorine-containing polymer, cation exchange membrane and electrolytic cell | |
| EP0004029A1 (en) | An anion permeable, fluid impervious membrane, process for its preparation, electrolysis cell comprising said membrane and an electrolytic process using said membrane | |
| US4189369A (en) | Diaphragm of hydrophilic fluoropolymers | |
| US4164463A (en) | Hydrophilic fluoropolymers | |
| EP0065547A1 (en) | Permselective membrane made of fluoropolymer and its manufacture. | |
| US4539085A (en) | Porous diaphragm for electrolytic cell | |
| CA1133425A (en) | Fluorinated ion exchange polymer containing carboxylic groups, and film and membrane thereof | |
| US4140615A (en) | Cell and process for electrolyzing aqueous solutions using a porous anode separator | |
| CA1096093A (en) | Phosphonated fluorotelomers | |
| EP0026969A2 (en) | Method of bonding electrode to cation exchange membrane | |
| US4186084A (en) | Hydrophilic fluoropolymers | |
| US4116890A (en) | Phosphonated fluorotelomers | |
| US4066519A (en) | Cell and process for electrolyzing aqueous solutions using a porous metal separator | |
| NO811030L (no) | Permeabelt diafragma av hydrofobt polymermateriale | |
| CA1093768A (en) | Method of recovering electrochemical properties of cation exchange membrane of fluorinated polymer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |