CA1158852A - Corrosion inhibitors for alkanolamine gas treating systems - Google Patents
Corrosion inhibitors for alkanolamine gas treating systemsInfo
- Publication number
- CA1158852A CA1158852A CA000380674A CA380674A CA1158852A CA 1158852 A CA1158852 A CA 1158852A CA 000380674 A CA000380674 A CA 000380674A CA 380674 A CA380674 A CA 380674A CA 1158852 A CA1158852 A CA 1158852A
- Authority
- CA
- Canada
- Prior art keywords
- vanadium
- acid
- compound
- nitro
- corrosion
- 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
- 238000005260 corrosion Methods 0.000 title claims abstract description 54
- 230000007797 corrosion Effects 0.000 title claims abstract description 52
- 239000003112 inhibitor Substances 0.000 title claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 28
- 150000003682 vanadium compounds Chemical class 0.000 claims abstract description 21
- 239000002253 acid Substances 0.000 claims abstract description 20
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 20
- FRASJONUBLZVQX-UHFFFAOYSA-N 1,4-naphthoquinone Chemical compound C1=CC=C2C(=O)C=CC(=O)C2=C1 FRASJONUBLZVQX-UHFFFAOYSA-N 0.000 claims abstract description 18
- VYWYYJYRVSBHJQ-UHFFFAOYSA-N 3,5-dinitrobenzoic acid Chemical compound OC(=O)C1=CC([N+]([O-])=O)=CC([N+]([O-])=O)=C1 VYWYYJYRVSBHJQ-UHFFFAOYSA-N 0.000 claims abstract description 13
- OTLNPYWUJOZPPA-UHFFFAOYSA-N 4-nitrobenzoic acid Chemical compound OC(=O)C1=CC=C([N+]([O-])=O)C=C1 OTLNPYWUJOZPPA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 150000003839 salts Chemical class 0.000 claims abstract description 8
- AFPHTEQTJZKQAQ-UHFFFAOYSA-N 3-nitrobenzoic acid Chemical compound OC(=O)C1=CC=CC([N+]([O-])=O)=C1 AFPHTEQTJZKQAQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- RTZZCYNQPHTPPL-UHFFFAOYSA-N 3-nitrophenol Chemical compound OC1=CC=CC([N+]([O-])=O)=C1 RTZZCYNQPHTPPL-UHFFFAOYSA-N 0.000 claims abstract description 6
- ONMOULMPIIOVTQ-UHFFFAOYSA-N 98-47-5 Chemical compound OS(=O)(=O)C1=CC=CC([N+]([O-])=O)=C1 ONMOULMPIIOVTQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 159000000032 aromatic acids Chemical class 0.000 claims abstract description 6
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000002401 inhibitory effect Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 11
- 229910052720 vanadium Inorganic materials 0.000 claims description 9
- -1 vanadium (V) compound Chemical class 0.000 claims description 7
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 claims 4
- 229940126142 compound 16 Drugs 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 22
- 239000010959 steel Substances 0.000 description 22
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 18
- 239000007789 gas Substances 0.000 description 15
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 14
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 13
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 description 9
- 239000001569 carbon dioxide Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052717 sulfur Inorganic materials 0.000 description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 6
- YEKPNMQQSPHKBP-UHFFFAOYSA-N 2-methyl-6-nitrobenzoic anhydride Chemical compound CC1=CC=CC([N+]([O-])=O)=C1C(=O)OC(=O)C1=C(C)C=CC=C1[N+]([O-])=O YEKPNMQQSPHKBP-UHFFFAOYSA-N 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 239000011885 synergistic combination Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- YEILPOXQZGPJSN-UHFFFAOYSA-N S.C(=O)=O.O.C(O)CN Chemical compound S.C(=O)=O.O.C(O)CN YEILPOXQZGPJSN-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000001463 antimony compounds Chemical class 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229940000425 combination drug Drugs 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- 229910001431 copper ion Inorganic materials 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000005077 polysulfide Substances 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- 150000008117 polysulfides Polymers 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 125000004434 sulfur atom Chemical group 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 description 1
- KJZIBPUUBIVGMV-UHFFFAOYSA-N 2-aminoethanol;carbon dioxide Chemical compound O=C=O.NCCO KJZIBPUUBIVGMV-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004277 Ferrous carbonate Substances 0.000 description 1
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910021144 KVO3 Inorganic materials 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 101100497923 Viola odorata Voc1 gene Proteins 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- LHIJANUOQQMGNT-UHFFFAOYSA-N aminoethylethanolamine Chemical compound NCCNCCO LHIJANUOQQMGNT-UHFFFAOYSA-N 0.000 description 1
- 229940058905 antimony compound for treatment of leishmaniasis and trypanosomiasis Drugs 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000005323 carbonate salts Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001869 cobalt compounds Chemical class 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- AEOCXXJPGCBFJA-UHFFFAOYSA-N ethionamide Chemical compound CCC1=CC(C(N)=S)=CC=N1 AEOCXXJPGCBFJA-UHFFFAOYSA-N 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- RAQDACVRFCEPDA-UHFFFAOYSA-L ferrous carbonate Chemical compound [Fe+2].[O-]C([O-])=O RAQDACVRFCEPDA-UHFFFAOYSA-L 0.000 description 1
- 229960004652 ferrous carbonate Drugs 0.000 description 1
- 235000019268 ferrous carbonate Nutrition 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 150000004674 formic acids Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 1
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910000015 iron(II) carbonate Inorganic materials 0.000 description 1
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 description 1
- APVPOHHVBBYQAV-UHFFFAOYSA-N n-(4-aminophenyl)sulfonyloctadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NS(=O)(=O)C1=CC=C(N)C=C1 APVPOHHVBBYQAV-UHFFFAOYSA-N 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 150000002913 oxalic acids Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- DIMMBYOINZRKMD-UHFFFAOYSA-N vanadium(5+) Chemical compound [V+5] DIMMBYOINZRKMD-UHFFFAOYSA-N 0.000 description 1
- UUUGYDOQQLOJQA-UHFFFAOYSA-L vanadyl sulfate Chemical compound [V+2]=O.[O-]S([O-])(=O)=O UUUGYDOQQLOJQA-UHFFFAOYSA-L 0.000 description 1
- 229910000352 vanadyl sulfate Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/06—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly alkaline liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Gas Separation By Absorption (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16397580A | 1980-06-30 | 1980-06-30 | |
| US163,975 | 1980-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1158852A true CA1158852A (en) | 1983-12-20 |
Family
ID=22592441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000380674A Expired CA1158852A (en) | 1980-06-30 | 1981-06-26 | Corrosion inhibitors for alkanolamine gas treating systems |
Country Status (20)
| Country | Link |
|---|---|
| EP (1) | EP0043525B1 (en, 2012) |
| JP (1) | JPS604272B2 (en, 2012) |
| AR (1) | AR228276A1 (en, 2012) |
| AT (1) | ATE10293T1 (en, 2012) |
| AU (1) | AU542053B2 (en, 2012) |
| BR (1) | BR8104104A (en, 2012) |
| CA (1) | CA1158852A (en, 2012) |
| CS (1) | CS242870B2 (en, 2012) |
| DE (1) | DE3167178D1 (en, 2012) |
| ES (1) | ES503481A0 (en, 2012) |
| GR (1) | GR75712B (en, 2012) |
| HU (1) | HU185932B (en, 2012) |
| IN (1) | IN154625B (en, 2012) |
| MX (1) | MX161784A (en, 2012) |
| NO (1) | NO163537C (en, 2012) |
| NZ (1) | NZ197575A (en, 2012) |
| PH (1) | PH16622A (en, 2012) |
| PL (2) | PL130311B1 (en, 2012) |
| RO (1) | RO81354B (en, 2012) |
| ZA (1) | ZA814278B (en, 2012) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60180877U (ja) * | 1984-05-14 | 1985-11-30 | 新潟ビ−．エス．アンド．ビ−．セイフテイ．システムズ株式会社 | 溶接形破裂板の保持構造 |
| JPS6254696U (en, 2012) * | 1985-09-24 | 1987-04-04 | ||
| JPH02119192U (en, 2012) * | 1989-03-13 | 1990-09-26 | ||
| JPH02122691U (en, 2012) * | 1989-03-15 | 1990-10-08 | ||
| AR010696A1 (es) * | 1996-12-12 | 2000-06-28 | Sasol Tech Pty Ltd | Un metodo para la eliminacion del dioxido de carbono de un gas de proceso |
| FR2994861B1 (fr) | 2012-08-30 | 2014-08-22 | IFP Energies Nouvelles | Procede d'absorption de composes acides contenus dans un effluent gazeux au moyen d'une solution aqueuse a base d'amine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3808140A (en) * | 1970-07-13 | 1974-04-30 | B Mago | Antimony-vanadium corrosion inhibitors for alkanolamine gas treating system |
| US3896044A (en) * | 1971-11-22 | 1975-07-22 | Union Carbide Corp | Nitro-substituted aromatic acid corrosion inhibitors for alkanolamine gas treating system |
| US3959170A (en) * | 1971-11-22 | 1976-05-25 | Union Carbide Corporation | Corrosion inhibitors for alkanolamine gas treating system |
| US3951844A (en) * | 1974-04-29 | 1976-04-20 | Union Carbide Corporation | Corrosion inhibition of aqueous potassium carbonate gas treating systems |
-
1981
- 1981-06-24 IN IN682/CAL/81A patent/IN154625B/en unknown
- 1981-06-24 NO NO812157A patent/NO163537C/no unknown
- 1981-06-24 ZA ZA814278A patent/ZA814278B/xx unknown
- 1981-06-26 AT AT81104985T patent/ATE10293T1/de active
- 1981-06-26 CA CA000380674A patent/CA1158852A/en not_active Expired
- 1981-06-26 DE DE8181104985T patent/DE3167178D1/de not_active Expired
- 1981-06-26 EP EP81104985A patent/EP0043525B1/en not_active Expired
- 1981-06-27 JP JP56100386A patent/JPS604272B2/ja not_active Expired
- 1981-06-29 PL PL1981239063A patent/PL130311B1/pl unknown
- 1981-06-29 BR BR8104104A patent/BR8104104A/pt unknown
- 1981-06-29 GR GR65370A patent/GR75712B/el unknown
- 1981-06-29 ES ES503481A patent/ES503481A0/es active Granted
- 1981-06-29 MX MX188064A patent/MX161784A/es unknown
- 1981-06-29 AR AR285900A patent/AR228276A1/es active
- 1981-06-29 PH PH25830A patent/PH16622A/en unknown
- 1981-06-29 CS CS814945A patent/CS242870B2/cs unknown
- 1981-06-29 HU HU811888A patent/HU185932B/hu unknown
- 1981-06-30 RO RO104734A patent/RO81354B/ro unknown
- 1981-06-30 AU AU72401/81A patent/AU542053B2/en not_active Ceased
- 1981-06-30 NZ NZ197575A patent/NZ197575A/en unknown
- 1981-09-26 PL PL1981231927A patent/PL127863B1/pl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GR75712B (en, 2012) | 1984-08-02 |
| PH16622A (en) | 1983-11-28 |
| DE3167178D1 (en) | 1984-12-20 |
| CS494581A2 (en) | 1984-06-18 |
| MX161784A (es) | 1990-12-27 |
| PL130311B1 (en) | 1984-07-31 |
| AR228276A1 (es) | 1983-02-15 |
| PL127863B1 (en) | 1983-12-31 |
| RO81354B (ro) | 1983-02-28 |
| EP0043525A1 (en) | 1982-01-13 |
| RO81354A (ro) | 1983-02-15 |
| AU542053B2 (en) | 1985-02-07 |
| ATE10293T1 (de) | 1984-11-15 |
| ZA814278B (en) | 1982-07-28 |
| ES8300875A1 (es) | 1982-11-16 |
| JPS604272B2 (ja) | 1985-02-02 |
| NO812157L (no) | 1982-01-04 |
| NO163537B (no) | 1990-03-05 |
| ES503481A0 (es) | 1982-11-16 |
| NO163537C (no) | 1990-06-13 |
| CS242870B2 (en) | 1986-05-15 |
| IN154625B (en, 2012) | 1984-11-24 |
| PL231927A1 (en, 2012) | 1982-03-15 |
| JPS5739178A (en) | 1982-03-04 |
| BR8104104A (pt) | 1982-03-16 |
| HU185932B (en) | 1985-04-28 |
| AU7240181A (en) | 1982-01-07 |
| EP0043525B1 (en) | 1984-11-14 |
| NZ197575A (en) | 1984-10-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |