CA1330964C - Production of chlorine dioxide in an electrolytic cell - Google Patents
Production of chlorine dioxide in an electrolytic cellInfo
- Publication number
- CA1330964C CA1330964C CA000558945A CA558945A CA1330964C CA 1330964 C CA1330964 C CA 1330964C CA 000558945 A CA000558945 A CA 000558945A CA 558945 A CA558945 A CA 558945A CA 1330964 C CA1330964 C CA 1330964C
- Authority
- CA
- Canada
- Prior art keywords
- cathode
- cathode compartment
- chlorine
- ions
- compartment
- 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 - Lifetime
Links
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 235000019398 chlorine dioxide Nutrition 0.000 title claims abstract description 62
- 239000004155 Chlorine dioxide Substances 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 48
- 239000000460 chlorine Substances 0.000 claims abstract description 48
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 46
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 45
- 239000001257 hydrogen Substances 0.000 claims abstract description 45
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 43
- -1 hydrogen ions Chemical class 0.000 claims abstract description 41
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000012528 membrane Substances 0.000 claims abstract description 19
- 238000005341 cation exchange Methods 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 35
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 32
- XTEGARKTQYYJKE-UHFFFAOYSA-M chlorate Inorganic materials [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 28
- 230000009467 reduction Effects 0.000 claims description 19
- 239000011780 sodium chloride Substances 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 11
- 150000002500 ions Chemical class 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 9
- 239000006227 byproduct Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 6
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910001919 chlorite Inorganic materials 0.000 claims description 4
- 229910052619 chlorite group Inorganic materials 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 229960002218 sodium chlorite Drugs 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 108091006629 SLC13A2 Proteins 0.000 claims description 2
- 239000003575 carbonaceous material Substances 0.000 claims 1
- 239000007772 electrode material Substances 0.000 claims 1
- 229940080281 sodium chlorate Drugs 0.000 description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 238000005868 electrolysis reaction Methods 0.000 description 7
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- XTEGARKTQYYJKE-UHFFFAOYSA-N chloric acid Chemical compound OCl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 230000010354 integration Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 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 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- QBWCMBCROVPCKQ-UHFFFAOYSA-M chlorite Chemical compound [O-]Cl=O QBWCMBCROVPCKQ-UHFFFAOYSA-M 0.000 description 2
- 229940005993 chlorite ion Drugs 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 101100130497 Drosophila melanogaster Mical gene Proteins 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 101100345589 Mus musculus Mical1 gene Proteins 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- 229910000566 Platinum-iridium alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000012431 aqueous reaction media Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012527 feed solution Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- HWLDNSXPUQTBOD-UHFFFAOYSA-N platinum-iridium alloy Chemical class [Ir].[Pt] HWLDNSXPUQTBOD-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 229910000923 precious metal alloy Inorganic materials 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 235000010269 sulphur dioxide Nutrition 0.000 description 1
- 239000004291 sulphur dioxide Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
- C25B1/46—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/24—Halogens or compounds thereof
- C25B1/26—Chlorine; Compounds thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Priority Applications (17)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000558945A CA1330964C (en) | 1988-02-16 | 1988-02-16 | Production of chlorine dioxide in an electrolytic cell |
| ES198888311380T ES2041321T3 (es) | 1988-02-16 | 1988-12-01 | Produccion de dioxido de cloro en una celda electrolitica. |
| DE88311380T DE3882220T2 (de) | 1988-02-16 | 1988-12-01 | Herstellung von Chlordioxyd in einer elektrolytischen Zelle. |
| EP88311380A EP0328818B1 (en) | 1988-02-16 | 1988-12-01 | Production of chlorine dioxide in an electrolytic cell |
| AT88311380T ATE91306T1 (de) | 1988-02-16 | 1988-12-01 | Herstellung von chlordioxyd in einer elektrolytischen zelle. |
| NZ227199A NZ227199A (en) | 1988-02-16 | 1988-12-05 | Electrolytic production of chlorine dioxide |
| ZA889170A ZA889170B (en) | 1988-02-16 | 1988-12-07 | Production of chlorine dioxide in an electrolytic cell |
| NO885436A NO173513C (no) | 1988-02-16 | 1988-12-07 | Fremgangsmaate for elektrolytisk fremstilling av kloridoksyd |
| PT89221A PT89221B (pt) | 1988-02-16 | 1988-12-14 | Processo para a producao de dioxido de cloro numa celula electrolitica |
| AU26977/88A AU604590B2 (en) | 1988-02-16 | 1988-12-15 | Production of chlorine dioxide in an electrolytic cell |
| PL1988276597A PL160949B1 (pl) | 1988-02-16 | 1988-12-21 | Sposób wytwarzania dwutlenku chloru PL PL PL |
| AR312805A AR240340A1 (es) | 1988-02-16 | 1988-12-21 | Proceso electrolitico para la produccion de dioxido de cloro. |
| SU884613178A RU1836493C (ru) | 1988-02-16 | 1988-12-26 | Способ получени диоксида хлора |
| YU235988A YU46719B (sh) | 1988-02-16 | 1988-12-27 | Postupak za elektrolitičku proizvodnju hlordioksida |
| JP63329519A JPH01219185A (ja) | 1988-02-16 | 1988-12-28 | 電解槽中での二酸化塩素の製造方法 |
| BR888807003A BR8807003A (pt) | 1988-02-16 | 1988-12-30 | Processo eletrolitico para producao de dioxido de cloro |
| FI890172A FI87936C (fi) | 1988-02-16 | 1989-01-13 | Produktion av klordioxid i en elektrolytisk cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000558945A CA1330964C (en) | 1988-02-16 | 1988-02-16 | Production of chlorine dioxide in an electrolytic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1330964C true CA1330964C (en) | 1994-07-26 |
Family
ID=4137450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000558945A Expired - Lifetime CA1330964C (en) | 1988-02-16 | 1988-02-16 | Production of chlorine dioxide in an electrolytic cell |
Country Status (17)
| Country | Link |
|---|---|
| EP (1) | EP0328818B1 (pl) |
| JP (1) | JPH01219185A (pl) |
| AR (1) | AR240340A1 (pl) |
| AT (1) | ATE91306T1 (pl) |
| AU (1) | AU604590B2 (pl) |
| BR (1) | BR8807003A (pl) |
| CA (1) | CA1330964C (pl) |
| DE (1) | DE3882220T2 (pl) |
| ES (1) | ES2041321T3 (pl) |
| FI (1) | FI87936C (pl) |
| NO (1) | NO173513C (pl) |
| NZ (1) | NZ227199A (pl) |
| PL (1) | PL160949B1 (pl) |
| PT (1) | PT89221B (pl) |
| RU (1) | RU1836493C (pl) |
| YU (1) | YU46719B (pl) |
| ZA (1) | ZA889170B (pl) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1324976C (en) * | 1988-07-26 | 1993-12-07 | Zbigniew Twardowski | Combined process for production of chlorine dioxide and sodium hydroxide |
| US7153586B2 (en) | 2003-08-01 | 2006-12-26 | Vapor Technologies, Inc. | Article with scandium compound decorative coating |
| US20070026205A1 (en) | 2005-08-01 | 2007-02-01 | Vapor Technologies Inc. | Article having patterned decorative coating |
| DE102007017625A1 (de) * | 2007-04-12 | 2008-10-16 | Hosni Dr. Khalaf | Verfahren zur Herstellung von Chlordioxid |
| FR2961756B1 (fr) * | 2010-06-29 | 2014-03-07 | Michelin Soc Tech | Systeme de production et d'alimentation en hydrogene et en chlorate de sodium, comportant un electrolyseur au chlorure de sodium pour produire le chlorate de sodium |
| AU2015289095B2 (en) * | 2014-07-17 | 2019-04-04 | Industrie De Nora S.P.A. | Catalytic or electrocatalytic generation of chlorine dioxide |
| CN114921799B (zh) * | 2022-05-11 | 2024-09-06 | 上海交通大学 | 单原子阴阳极同时合成高纯二氧化氯气体的方法及其装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4426263A (en) * | 1981-04-23 | 1984-01-17 | Diamond Shamrock Corporation | Method and electrocatalyst for making chlorine dioxide |
| CA1252753A (en) * | 1986-10-29 | 1989-04-18 | Sterling Canada, Inc. | Selective removal of chlorine from solutions of chlorine dioxide and chlorine |
| CA1287815C (en) * | 1987-05-29 | 1991-08-20 | Marek Lipsztajn | Electrolytic production of chlorine dioxide |
| US4767510A (en) * | 1987-06-03 | 1988-08-30 | Tenneco Canada Inc. | Electrolytic protection of chlorine dioxide |
-
1988
- 1988-02-16 CA CA000558945A patent/CA1330964C/en not_active Expired - Lifetime
- 1988-12-01 ES ES198888311380T patent/ES2041321T3/es not_active Expired - Lifetime
- 1988-12-01 AT AT88311380T patent/ATE91306T1/de not_active IP Right Cessation
- 1988-12-01 DE DE88311380T patent/DE3882220T2/de not_active Expired - Fee Related
- 1988-12-01 EP EP88311380A patent/EP0328818B1/en not_active Expired - Lifetime
- 1988-12-05 NZ NZ227199A patent/NZ227199A/en unknown
- 1988-12-07 NO NO885436A patent/NO173513C/no unknown
- 1988-12-07 ZA ZA889170A patent/ZA889170B/xx unknown
- 1988-12-14 PT PT89221A patent/PT89221B/pt not_active IP Right Cessation
- 1988-12-15 AU AU26977/88A patent/AU604590B2/en not_active Ceased
- 1988-12-21 AR AR312805A patent/AR240340A1/es active
- 1988-12-21 PL PL1988276597A patent/PL160949B1/pl unknown
- 1988-12-26 RU SU884613178A patent/RU1836493C/ru active
- 1988-12-27 YU YU235988A patent/YU46719B/sh unknown
- 1988-12-28 JP JP63329519A patent/JPH01219185A/ja active Granted
- 1988-12-30 BR BR888807003A patent/BR8807003A/pt not_active Application Discontinuation
-
1989
- 1989-01-13 FI FI890172A patent/FI87936C/fi not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH021917B2 (pl) | 1990-01-16 |
| ATE91306T1 (de) | 1993-07-15 |
| ZA889170B (en) | 1989-10-25 |
| EP0328818B1 (en) | 1993-07-07 |
| FI87936B (fi) | 1992-11-30 |
| FI890172L (fi) | 1989-08-17 |
| JPH01219185A (ja) | 1989-09-01 |
| NZ227199A (en) | 1990-03-27 |
| NO885436L (no) | 1989-08-17 |
| PT89221A (pt) | 1990-03-08 |
| BR8807003A (pt) | 1990-08-07 |
| EP0328818A3 (en) | 1989-12-06 |
| DE3882220D1 (de) | 1993-08-12 |
| ES2041321T3 (es) | 1993-11-16 |
| NO885436D0 (no) | 1988-12-07 |
| PL160949B1 (pl) | 1993-05-31 |
| AU604590B2 (en) | 1990-12-20 |
| FI87936C (fi) | 1993-03-10 |
| PT89221B (pt) | 1993-09-30 |
| DE3882220T2 (de) | 1994-02-17 |
| RU1836493C (ru) | 1993-08-23 |
| EP0328818A2 (en) | 1989-08-23 |
| FI890172A0 (fi) | 1989-01-13 |
| AR240340A1 (es) | 1990-03-30 |
| NO173513C (no) | 1993-12-22 |
| PL276597A1 (en) | 1989-08-21 |
| YU235988A (en) | 1990-10-31 |
| YU46719B (sh) | 1994-04-05 |
| NO173513B (no) | 1993-09-13 |
| AU2697788A (en) | 1989-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |