CS242870B2 - Metallic surfaces corrosion inhibitor - Google Patents
Metallic surfaces corrosion inhibitor Download PDFInfo
- Publication number
- CS242870B2 CS242870B2 CS814945A CS494581A CS242870B2 CS 242870 B2 CS242870 B2 CS 242870B2 CS 814945 A CS814945 A CS 814945A CS 494581 A CS494581 A CS 494581A CS 242870 B2 CS242870 B2 CS 242870B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- acid
- vanadium
- corrosion
- solution
- group
- Prior art date
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 49
- 230000007797 corrosion Effects 0.000 title claims abstract description 49
- 239000003112 inhibitor Substances 0.000 title claims description 30
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 16
- 150000003682 vanadium compounds Chemical class 0.000 claims abstract description 15
- 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 14
- 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
- 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 4
- RTZZCYNQPHTPPL-UHFFFAOYSA-N 3-nitrophenol Chemical compound OC1=CC=CC([N+]([O-])=O)=C1 RTZZCYNQPHTPPL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 159000000032 aromatic acids Chemical class 0.000 claims abstract description 4
- 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 3
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 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 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 18
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- CMZUMMUJMWNLFH-UHFFFAOYSA-N sodium metavanadate Chemical compound [Na+].[O-][V](=O)=O CMZUMMUJMWNLFH-UHFFFAOYSA-N 0.000 claims 1
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 claims 1
- 229910000166 zirconium phosphate Inorganic materials 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract description 24
- 150000003839 salts Chemical class 0.000 abstract description 7
- 239000000243 solution Substances 0.000 description 32
- 239000007789 gas Substances 0.000 description 13
- 150000001875 compounds Chemical class 0.000 description 12
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 229910052717 sulfur Inorganic materials 0.000 description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 229910002091 carbon monoxide Inorganic materials 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 125000004434 sulfur atom Chemical group 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910001868 water Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 125000002947 alkylene group Chemical group 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
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910001431 copper ion Inorganic materials 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- NCEGJIHRQBRVJQ-UHFFFAOYSA-N 2-amino-3-[3-[2-(phosphonomethyl)phenyl]phenyl]propanoic acid Chemical compound OC(=O)C(N)CC1=CC=CC(C=2C(=CC=CC=2)CP(O)(O)=O)=C1 NCEGJIHRQBRVJQ-UHFFFAOYSA-N 0.000 description 1
- XTHLNJJMYLLKPD-UHFFFAOYSA-N 2-aminoethanol;carbonic acid Chemical compound NCCO.OC(O)=O XTHLNJJMYLLKPD-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- 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 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical class OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 241001150538 Iria Species 0.000 description 1
- 102000004856 Lectins Human genes 0.000 description 1
- 108090001090 Lectins Proteins 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 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
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229940058905 antimony compound for treatment of leishmaniasis and trypanosomiasis Drugs 0.000 description 1
- 150000001463 antimony compounds Chemical class 0.000 description 1
- 229940092714 benzenesulfonic acid Drugs 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical group OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000007857 degradation product Substances 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- AEOCXXJPGCBFJA-UHFFFAOYSA-N ethionamide Chemical compound CCC1=CC(C(N)=S)=CC=N1 AEOCXXJPGCBFJA-UHFFFAOYSA-N 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229960002449 glycine Drugs 0.000 description 1
- 235000013905 glycine and its sodium salt Nutrition 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
- 230000002401 inhibitory effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000002523 lectin Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- CRVGTESFCCXCTH-UHFFFAOYSA-N methyl diethanolamine Chemical compound OCCN(C)CCO CRVGTESFCCXCTH-UHFFFAOYSA-N 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 239000008180 pharmaceutical surfactant Substances 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- MFZGHXQLWCPSQQ-UHFFFAOYSA-M sulfanylideneiron(1+) hydroxide Chemical compound [OH-].[Fe+]=S MFZGHXQLWCPSQQ-UHFFFAOYSA-M 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- -1 vanadium p-nitrobenzoate Chemical compound 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16397580A | 1980-06-30 | 1980-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS494581A2 CS494581A2 (en) | 1984-06-18 |
| CS242870B2 true CS242870B2 (en) | 1986-05-15 |
Family
ID=22592441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS814945A CS242870B2 (en) | 1980-06-30 | 1981-06-29 | Metallic surfaces corrosion inhibitor |
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 |
| CA1158852A (en) | 1983-12-20 |
| 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 |
| 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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