NO881091L - PREPARATION FOR AA HIDDEN METAL CORROSION IN WATER CONDUCTING SYSTEMS. - Google Patents
PREPARATION FOR AA HIDDEN METAL CORROSION IN WATER CONDUCTING SYSTEMS.Info
- Publication number
- NO881091L NO881091L NO881091A NO881091A NO881091L NO 881091 L NO881091 L NO 881091L NO 881091 A NO881091 A NO 881091A NO 881091 A NO881091 A NO 881091A NO 881091 L NO881091 L NO 881091L
- Authority
- NO
- Norway
- Prior art keywords
- group
- hydrogen
- carbon atoms
- manganese
- preparation according
- Prior art date
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 28
- 230000007797 corrosion Effects 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 title claims abstract description 13
- 239000011572 manganese Substances 0.000 claims abstract description 15
- -1 phosphinocarboxylic acid compound Chemical class 0.000 claims abstract description 15
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 13
- 150000002697 manganese compounds Chemical class 0.000 claims abstract description 11
- 229910001437 manganese ion Inorganic materials 0.000 claims abstract description 5
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 claims abstract description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 22
- 229910052739 hydrogen Inorganic materials 0.000 claims description 17
- 239000001257 hydrogen Substances 0.000 claims description 17
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 17
- 125000000217 alkyl group Chemical group 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 11
- 239000011574 phosphorus Substances 0.000 claims description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 10
- 150000002739 metals Chemical class 0.000 claims description 6
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 5
- 125000003118 aryl group Chemical group 0.000 claims description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 5
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 5
- 125000003342 alkenyl group Chemical group 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 230000002401 inhibitory effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 125000001424 substituent group Chemical group 0.000 claims description 2
- ZJAOAACCNHFJAH-UHFFFAOYSA-N phosphonoformic acid Chemical compound OC(=O)P(O)(O)=O ZJAOAACCNHFJAH-UHFFFAOYSA-N 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 4
- MEUIIHOXOWVKNP-UHFFFAOYSA-N phosphanylformic acid Chemical class OC(P)=O MEUIIHOXOWVKNP-UHFFFAOYSA-N 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- GLULCKCBVYGUDD-UHFFFAOYSA-N 2-phosphonobutane-1,1,1-tricarboxylic acid Chemical compound CCC(P(O)(O)=O)C(C(O)=O)(C(O)=O)C(O)=O GLULCKCBVYGUDD-UHFFFAOYSA-N 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- KMDMOMDSEVTJTI-UHFFFAOYSA-N 2-phosphonobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)P(O)(O)=O KMDMOMDSEVTJTI-UHFFFAOYSA-N 0.000 description 2
- ZQKIEZGLXJMDRQ-UHFFFAOYSA-N 3-phosphonobutanoic acid Chemical compound OP(=O)(O)C(C)CC(O)=O ZQKIEZGLXJMDRQ-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920000388 Polyphosphate Polymers 0.000 description 2
- 125000000304 alkynyl group Chemical group 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- GBHRVZIGDIUCJB-UHFFFAOYSA-N hydrogenphosphite Chemical class OP([O-])[O-] GBHRVZIGDIUCJB-UHFFFAOYSA-N 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- XUYJLQHKOGNDPB-UHFFFAOYSA-N phosphonoacetic acid Chemical compound OC(=O)CP(O)(O)=O XUYJLQHKOGNDPB-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000001205 polyphosphate Substances 0.000 description 2
- 235000011176 polyphosphates Nutrition 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- LMHAGAHDHRQIMB-UHFFFAOYSA-N 1,2-dichloro-1,2,3,3,4,4-hexafluorocyclobutane Chemical compound FC1(F)C(F)(F)C(F)(Cl)C1(F)Cl LMHAGAHDHRQIMB-UHFFFAOYSA-N 0.000 description 1
- HBRRWJBMVCQFHU-UHFFFAOYSA-N 1-phosphorosooxybutane Chemical compound CCCCOP=O HBRRWJBMVCQFHU-UHFFFAOYSA-N 0.000 description 1
- XOQVDBCNWPUEPS-UHFFFAOYSA-N 2-(phosphonomethyl)butanedioic acid Chemical compound OC(=O)CC(C(O)=O)CP(O)(O)=O XOQVDBCNWPUEPS-UHFFFAOYSA-N 0.000 description 1
- INJFRROOFQOUGJ-UHFFFAOYSA-N 2-[hydroxy(methoxy)phosphoryl]butanedioic acid Chemical compound COP(O)(=O)C(C(O)=O)CC(O)=O INJFRROOFQOUGJ-UHFFFAOYSA-N 0.000 description 1
- NLBSQHGCGGFVJW-UHFFFAOYSA-N 2-carboxyethylphosphonic acid Chemical compound OC(=O)CCP(O)(O)=O NLBSQHGCGGFVJW-UHFFFAOYSA-N 0.000 description 1
- NFNJSHKCMHAXJJ-UHFFFAOYSA-N 2-methyl-3-phosphonopropanoic acid Chemical compound OC(=O)C(C)CP(O)(O)=O NFNJSHKCMHAXJJ-UHFFFAOYSA-N 0.000 description 1
- GUXRZQZCNOHHDO-UHFFFAOYSA-N 2-phosphonopropanoic acid Chemical compound OC(=O)C(C)P(O)(O)=O GUXRZQZCNOHHDO-UHFFFAOYSA-N 0.000 description 1
- QXFUBAAEKCHBQY-UHFFFAOYSA-N 3-[hydroxy(methyl)phosphoryl]propanoic acid Chemical compound CP(O)(=O)CCC(O)=O QXFUBAAEKCHBQY-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- TVZISJTYELEYPI-UHFFFAOYSA-N hypodiphosphoric acid Chemical compound OP(O)(=O)P(O)(O)=O TVZISJTYELEYPI-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- PTMHPRAIXMAOOB-UHFFFAOYSA-N phosphoramidic acid Chemical class NP(O)(O)=O PTMHPRAIXMAOOB-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000011885 synergistic combination Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 102000055501 telomere Human genes 0.000 description 1
- 108091035539 telomere Proteins 0.000 description 1
- 210000003411 telomere Anatomy 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 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
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
-
- 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
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/167—Phosphorus-containing compounds
-
- 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
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
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)
Abstract
Preparat for å hindre metallkorrosjon i vannledningssystemer omfattende en organisk fosfonokarboksyl- og/eller fosfinokarboksylsyreforbindelse i kombinasjon med en manganforbindelse som kan tilveiebringe et manganion er beskrevet. Manganet kan være i den chelaterte formen med fosfono- eller fosfinokarboksylforbindelsen.Compositions for preventing metal corrosion in water supply systems comprising an organic phosphonocarboxylic and / or phosphinocarboxylic acid compound in combination with a manganese compound which can provide a manganese ion are described. The manganese may be in the chelated form with the phosphono- or phosphinocarboxyl compound.
Description
Et av hovedproblemene som forekommer i vannbygningsteknikk er korrosjonen av metaller i både behandlede og ubehandlede kjølevannsystemer. Korrosjonen av metaller som f.eks. stål, aluminium, messing og kobber som vanligvis finnes i vannsystemer, er primært forårsaket av oppløst oksygen og karbondioksyd. Materialer som fjerner oksygen som f.eks. natriumsulfitt eller hydratsin er ikke økonomiske og er teknisk inadekvate. Derfor tilsettes Zn++, kromater, molybdater, polyfosfater, ortofosfat og organofosfonater til kjølevann for å danne beskyttende filmer på metalloverflater. Kromater er meget effektive korrosjonsinhibitorer. De er imidlertid ofte uønskede miljø-messig, p.g.a. de vel kjente toksiske effektene. Zn++ har lignende miljøproblemer og danner også produkter med lav løselighet med ortofosfater, hydroksider og karbonater som kan danne slam og avsetninger som er ansvarlige for å fremme korrosjon. One of the main problems occurring in water building engineering is the corrosion of metals in both treated and untreated cooling water systems. The corrosion of metals such as steel, aluminium, brass and copper commonly found in water systems are primarily caused by dissolved oxygen and carbon dioxide. Materials that remove oxygen such as e.g. sodium sulphite or hydrazine are not economical and are technically inadequate. Therefore, Zn++, chromates, molybdates, polyphosphates, orthophosphate and organophosphonates are added to cooling water to form protective films on metal surfaces. Chromates are very effective corrosion inhibitors. However, they are often undesirable from an environmental point of view, due to the well-known toxic effects. Zn++ has similar environmental problems and also forms low solubility products with orthophosphates, hydroxides and carbonates which can form sludges and deposits responsible for promoting corrosion.
Polyfosfater er ikke så effektive som kromater, og de er ustabile i kjølevann og spaltes ved hydrolyse til orto- og pyrofosfater som ofte forårsaker bunnfall og avsetninger. Ortofosfater er ikke så effektive som kromater og dersom det ikke kontrolleres riktig kan de også danne bunnfall og avsetninger. Selv om organofosfonater gir en viss korrosjons-beskyttelse, er det ikke på langt nær så effektive som kromater. Polyphosphates are not as effective as chromates, and they are unstable in cooling water and break down on hydrolysis into ortho- and pyrophosphates which often cause precipitates and deposits. Orthophosphates are not as effective as chromates and if not controlled correctly they can also form precipitates and deposits. Although organophosphonates provide some corrosion protection, they are nowhere near as effective as chromates.
Organiske fosfonokarboksylsyrer eller fosfinokarboksylsyrer er beskrevet som anvendbare for å hindre kalsium- og andre kjelstensavsetninger og for å hindre korrosjon av jern i sirkulerende vannsystemer. Slike forbindelser er beskrevet i U.S. patent 3.933.427, 4.042.324 og 4.159.946. Eksempler på forbindelser som er beskrevet i U.S. patent 3.933.427 er fosfonoravsyre og 2-fosfonobutan-1,2,4-trikarboksylsyre, i U.S. patent 4.042.324 er det beskrevet karboksymetan-fosfonsyre og l-karboksypropan-2-fosfonsyre, i U.S. patent 4.052.160 er det beskrevet forbindelser som f.eks. 2-fosfonoeddik-, 2-fosfonopropion-, 2,3-di-fosfonopropion-, 2,4-difosfonosmør- og 2-fosfonometakrylsyrer, og i U.S. patent 4.159.946 er de telomere produktene av reaksjonen mellom akrylsyre og hypofosforsyre og produktene av akrylsyre og butylhypofosfitt beskrevet, og i U.S. patent 4.606.890 beskrives 2-hydroksyfosfonoeddiksyre anvendt i kombinasjon med visse metallioner, f.eks. sink, kadmium, mangano, ferro og krom som sies å være synergistiske når det gjelder å hindre korrosjon. De forbindelser som er beskrevet i U.S. patent 3.933.427 sies å gi forbedret korrosjonsinhibering når sinksalter, f.eks. sinksulfat eller -fosfat, tilsettes til det vandige systemet som inneholder fosfonokarboksyl- eller fosfinokarboksylforbindelsen. Organic phosphonocarboxylic acids or phosphinocarboxylic acids are described as useful for preventing calcium and other scale deposits and for preventing corrosion of iron in circulating water systems. Such compounds are described in U.S. Pat. patents 3,933,427, 4,042,324 and 4,159,946. Examples of compounds disclosed in U.S. Pat. patent 3,933,427 is phosphonosuccinic acid and 2-phosphonobutane-1,2,4-tricarboxylic acid, in the U.S. patent 4,042,324 describes carboxymethane-phosphonic acid and 1-carboxypropane-2-phosphonic acid, in U.S. Pat. patent 4,052,160 describes compounds such as e.g. 2-phosphonoacetic, 2-phosphonopropionic, 2,3-diphosphonopropionic, 2,4-diphosphonobutyric and 2-phosphonomethacrylic acids, and in the U.S. patent 4,159,946 the telomeric products of the reaction between acrylic acid and hypophosphoric acid and the products of acrylic acid and butyl hypophosphite are described, and in U.S. Pat. patent 4,606,890 describes 2-hydroxyphosphonoacetic acid used in combination with certain metal ions, e.g. zinc, cadmium, manganese, ferro and chromium which are said to be synergistic when it comes to preventing corrosion. The compounds described in U.S. Pat. patent 3,933,427 is said to provide improved corrosion inhibition when zinc salts, e.g. zinc sulfate or phosphate, is added to the aqueous system containing the phosphonocarboxyl or phosphinocarboxyl compound.
U.S. patent 4.640.818 beskriver kombinasjonen av en manganforbindelse og et aminofosfonsyrederivat som en inhibitor av metallkorrosjon i vannsystemer. U.S. patent 4,640,818 describes the combination of a manganese compound and an aminophosphonic acid derivative as an inhibitor of metal corrosion in water systems.
Det er nå funnet at kombinasjonen av manganforbindelser med slike fosfonokarboksyl- eller fosfinokarboksylforbindelser vil gi forbedret korrosjonbeskyttelse av metaller i vandige systemer. It has now been found that the combination of manganese compounds with such phosphonocarboxyl or phosphinocarboxyl compounds will provide improved corrosion protection of metals in aqueous systems.
Oppfinnelsen er en forbedret fremgangsmåte for inhibering av korrosjon av metaller i vannledningssystemer. Den omfatter anvendelse av en blanding som er anvendbar for inhibering av metallkorrosjon i vannledningssystemer som omfatter: (A) En fosfor-holdig karboksylsyreforbindelse, eller et salt derav hvor nevnte forbindelse tilsvarer minst en av The invention is an improved method for inhibiting corrosion of metals in water pipe systems. It comprises the use of a composition useful for inhibiting metal corrosion in water main systems comprising: (A) A phosphorus-containing carboxylic acid compound, or a salt thereof, wherein said compound corresponds to at least one of
hvor R er et hydrogenatom, en alkylgruppe med 1 til 4 karbonatomer, en alkenyl- eller alkynyl-gruppe, som hver har 2 til 4 karbonatomer, en aryl-, cykloalkyl- eller aralkylgruppe eller gruppen where R is a hydrogen atom, an alkyl group of 1 to 4 carbon atoms, an alkenyl or alkynyl group, each having 2 to 4 carbon atoms, an aryl, cycloalkyl or aralkyl group or the group
i hvilken R-^er hydrogen, en alkylgruppe med 1 til 4 karbonatomer eller en karboksylgruppe, R2er hydrogen eller metyl og R3er en karboksylgruppe, eller in which R-^ is hydrogen, an alkyl group of 1 to 4 carbon atoms or a carboxyl group, R 2 is hydrogen or methyl and R 3 is a carboxyl group, or
hvor hver av substituentene R±, R2, R3og R4uavhengig er hydrogen eller en alkylgruppe med fra 1 til 4 karbonatomer, R5er hydrogen, en OH-gruppe eller en alkylgruppe med fra 1 til 3 karbonatomer, og n er 0 eller 1, eller where each of the substituents R±, R2, R3 and R4 is independently hydrogen or an alkyl group with from 1 to 4 carbon atoms, R5 is hydrogen, an OH group or an alkyl group with from 1 to 3 carbon atoms, and n is 0 or 1, or
hvor R2er hydrogen eller en metyl- eller etylgruppe, R er hydrogen, en lineær eller forgrenet alkylgruppe med fra 1 til 18 karbonatomer, en cykloalkylgruppe med fra 5 til 12 karbonatomer, en arylgruppe, en aralkylgruppe, en gruppe med formelen where R2 is hydrogen or a methyl or ethyl group, R is hydrogen, a linear or branched alkyl group of from 1 to 18 carbon atoms, a cycloalkyl group of from 5 to 12 carbon atoms, an aryl group, an aralkyl group, a group of the formula
har samme betydning som tidligere, og summen n+m er et positivt helt tall og ikke mer enn 100, eller en rest -0X hvor X er hydrogen eller en alkylgruppe med fra 1 til 4 karbonatomer, og R^er en rest -0X hvor X har den forannevnte betydning (B) sammen med en manganforbindelse som kan tilveiebringe et manganion. has the same meaning as before, and the sum n+m is a positive whole number and not more than 100, or a residue -OX where X is hydrogen or an alkyl group with from 1 to 4 carbon atoms, and R^ is a residue -OX where X has the aforementioned meaning (B) together with a manganese compound which can provide a manganese ion.
Overraskende er det nå funnet at synergistiske kombinasjoner, omfattende manganforbindelser sammen med organiske fosfonokarboksyl- eller fosfinokarboksylsyrederivater eller deres salter, gir beskyttelse mot metallkorrosjon som er sammenlignbar med kromater. De forskjellige, organiske fosfonokarboksyl-eller fosfinokarboksylsyrederivater som er testet alene i vann gir ikke denne beskyttelsesgrad. Den beskyttelse av metaller mot korrosjon som tilveiebringes av en organisk fosfonokarboksyl-eller fosfinokarboksylsyreforbindelse, økes imidlertid ved tilsetningen av en manganforbindelse som utgjør en kilde for manganioner. Surprisingly, it has now been found that synergistic combinations comprising manganese compounds together with organic phosphonocarboxylic or phosphinocarboxylic acid derivatives or their salts provide protection against metal corrosion comparable to chromates. The various organic phosphonocarboxylic or phosphinocarboxylic acid derivatives that have been tested alone in water do not provide this degree of protection. The protection of metals against corrosion provided by an organic phosphonocarboxylic or phosphinocarboxylic acid compound is, however, increased by the addition of a manganese compound which constitutes a source of manganese ions.
De organiske fosfonokarboksyl- eller fosfinokarboksylsyrederivater som er anvendbare ved utførelse av foreliggende oppfinnelse som vist i de ovennevnte formler er kjente forbindelse. The organic phosphonocarboxylic or phosphinocarboxylic acid derivatives which are usable in carrying out the present invention as shown in the above-mentioned formulas are known compounds.
Slik de brukes her refererer uttrykkene "alkenyl" og "alkynyl" til hydrokarbongrupper med både lineære og forgrenede kjeder med enten deres respektive dobbelt- eller trippelbindinger og fra 2 til 4 karbonatomer. As used herein, the terms "alkenyl" and "alkynyl" refer to both straight and branched chain hydrocarbon groups having either their respective double or triple bonds and from 2 to 4 carbon atoms.
Uttrykket "alkyl" refererer til hydrokarboner med både linjerThe term "alkyl" refers to hydrocarbons with both lines
og forgrenet kjede med fra 1 til 18 karbonatomer.and branched chain with from 1 to 18 carbon atoms.
Uttrykket "cykloalkyl" refererer til et mettet hydrokarbon med en cyklist struktur og fra 5 til 12 karbonatomer. The term "cycloalkyl" refers to a saturated hydrocarbon having a cyclic structure and from 5 to 12 carbon atoms.
Uttrykket "aryl" refererer til et aromatisk hydrokarbon med fraThe term "aryl" refers to an aromatic hydrocarbon having from
6 til 12karbonatomer. Uttrykket "aralkyl" er et C^- C^-alkylsubstituert aryl. 6 to 12 carbon atoms. The term "aralkyl" is a C 1 -C 4 -alkyl substituted aryl.
Representative forbindelser med formel (1) er: alfa-metylfos-fonoravsyre, fosfonoravsyre, 1-fosfonopropan-2,3-dikarboksylsyre og 2-fosfonobutantrikarboksylsyre (1,2,4). Fremstillingen av slike fosfonokarboksylsyrer er eksempelvis beskrevet i De-off.-skrift nr. 2.015.068. Representative compounds of formula (1) are: alpha-methylphosphonosuccinic acid, phosphonosuccinic acid, 1-phosphonopropane-2,3-dicarboxylic acid and 2-phosphonobutanetricarboxylic acid (1,2,4). The production of such phosphonocarboxylic acids is described, for example, in De-Official Publication No. 2,015,068.
Representative for formel (2) er forbindelser som f.eks. karboksymetanfosfonsyre, 1-karboksyetan-l-fosfonsyre, 1-karboksyetan-2-fosfonsyre, 2-karboksypropan-3-fosfonsyre, 1-karboksypropan-2-fosfonsyre og metyl (karboksyetyl)-fosfinsyre. Disse forbindelsene fremstilles ved hjelp av fremgangsmåter som er kjent på fagområdet, f.eks. i U.S. patent 4.052.160. Representative of formula (2) are compounds such as e.g. carboxymethanephosphonic acid, 1-carboxyethane-1-phosphonic acid, 1-carboxyethane-2-phosphonic acid, 2-carboxypropane-3-phosphonic acid, 1-carboxypropane-2-phosphonic acid and methyl (carboxyethyl)-phosphinic acid. These compounds are produced using methods known in the art, e.g. in the U.S. patent 4,052,160.
Representative telomerer med formel (3) tilveiebringes ved omsetning av en umettet syre med formelen Representative telomeres of formula (3) are provided by reaction of an unsaturated acid with the formula
eller et salt derav, hvor R2er definert som tidligere, med en forbindelse med formelen or a salt thereof, where R 2 is defined as before, with a compound of the formula
hvor Ri er som definert tidligere, og R3er hydrogen, en alkylgruppe med linjer eller forgrenet kjede med fra 1 til 18 karbonatomer, en cykloalkylrest med 5 til 12 karbonatomer, en fenyl- eller bensylgruppe, eller OX hvor X er som definert tidligere. where R 1 is as defined previously, and R 3 is hydrogen, a straight or branched chain alkyl group of from 1 to 18 carbon atoms, a cycloalkyl radical of 5 to 12 carbon atoms, a phenyl or benzyl group, or OX where X is as defined previously.
Representative for egnede manganforbindelser som kan anvendes som en kilde for manganioner er f.eks. MnO, Mn02, MnCl2.4H20, KMn04, Mn(CH3COO)2.4H20 og lignende. Manganforbindelsen kan tilsettes samtidig med det fosfor-holdige karboksylsyrederivatet eller kan tilsettes separat til vannet. Alternativt kan manganet kompleksdannes med den fosfor-holdige karboksylsyreforbindelsen før tilsetning til vannet. Foretrukket er en blanding i hvilken vektforholdet mellom fosfor-holdig karbok-syl syrederivat og mangan er minst ca. 2 til 1. Representatives of suitable manganese compounds which can be used as a source of manganese ions are e.g. MnO, MnO2, MnCl2.4H20, KMnO4, Mn(CH3COO)2.4H20 and the like. The manganese compound can be added at the same time as the phosphorus-containing carboxylic acid derivative or can be added separately to the water. Alternatively, the manganese can be complexed with the phosphorus-containing carboxylic acid compound before addition to the water. Preferred is a mixture in which the weight ratio between phosphorus-containing carboxylic acid derivative and manganese is at least approx. 2 to 1.
For formålet med foreliggende oppfinnelse anses effektive organiske fosfonokarboksyl- eller fosfinokarboksylsyrederivater som er beskrevet her og salter derav og være ekvivalente. De saltene det refereres til er syreaddisjonssaltene av de baser som vil danne et salt med minst én syregruppe fra de ønskede derivatene. Egnede baser omfatter f.eks. ammoniakk, alkaly-metall-og jordalkalymetallhydroksydene, -karbonatene og - bikarbonatene som f.eks. natriumhydroksyd, kaliumhydroksyd, kalsiumhydroksyd, kaliumkarbonat, natriumbikarbonat, magnesium-karbonat og lignende. Disse saltene kan fremstilles ved å behandle det organiske fosfonokarboksyl- eller fosfinokarboksyl-syrederivatet som har minst en sur gruppe med en passende base. For the purposes of the present invention, effective organic phosphonocarboxylic or phosphinocarboxylic acid derivatives described herein and salts thereof are considered to be equivalent. The salts referred to are the acid addition salts of the bases which will form a salt with at least one acid group from the desired derivatives. Suitable bases include e.g. ammonia, the alkali metal and alkaline earth metal hydroxides, carbonates and bicarbonates such as sodium hydroxide, potassium hydroxide, calcium hydroxide, potassium carbonate, sodium bicarbonate, magnesium carbonate and the like. These salts can be prepared by treating the organic phosphonocarboxylic or phosphinocarboxylic acid derivative having at least one acidic group with a suitable base.
Den foretrukne mengde av de organiske fosfonokarboksyl- eller fosfinokarboksylsyrederivatene for å inhibere korrosjon av enten kobber- eller jernholdige metallegeringer i vannledningssystemer er fra 1 til 150 ppm syre eller ekvivalent. Anvendbare mengder er fra 0,5 til 200 ppm. Tilsetningen av manganforbindelser til disse fosforholdige karboksylsyrederivatene i slike vannledningssystemer medfører en uventet økning av korrosjonsinhibering. Anvendelsen av denne blandingen for å inhibere korrosjon utgjør foreliggende oppfinnelse. Manganforbindelsen anvendes i en mengde for å tilveiebringe fra 0,5 til 30 ppm mangan i vekt i den vandige løsningen. Foretrukne mengder er fra 0,1 til 10 ppm. The preferred amount of the organic phosphonocarboxylic or phosphinocarboxylic acid derivatives to inhibit corrosion of either copper or ferrous metal alloys in water main systems is from 1 to 150 ppm acid or equivalent. Usable amounts are from 0.5 to 200 ppm. The addition of manganese compounds to these phosphorus-containing carboxylic acid derivatives in such water main systems results in an unexpected increase in corrosion inhibition. The use of this mixture to inhibit corrosion constitutes the present invention. The manganese compound is used in an amount to provide from 0.5 to 30 ppm manganese by weight in the aqueous solution. Preferred amounts are from 0.1 to 10 ppm.
Følgende eksempler er representative for foreliggende oppfinnelse: The following examples are representative of the present invention:
EKSEMPEL 1EXAMPLE 1
Dette eksempel viser den økede korrosjonsinhiberingen av 1018 karbonstål som oppnås med mangan og 2-fosfonobutantrikarboksylsyre. Tanker med 8 liters kapasitet fylt med vann fra springen med følgende egenskaper: This example shows the increased corrosion inhibition of 1018 carbon steel achieved with manganese and 2-phosphonobutanetricarboxylic acid. Tanks with a capacity of 8 liters filled with tap water with the following characteristics:
VANN EGENSKAPERWATER PROPERTIES
Luft i en mengde på 283 standard dm<3>pr. time (SCFH) ble blåst gjennom et glassrør som ble plassert på den ene enden av tanken og som strakte seg til bunnen av tanken. Luftgjennomblåsningen ble brukt for å resirkulere vannet, oksygenere vannet og hjelpe til med fordampning. Vannivået i tanken ble automatisk regulert med et tyngdekraftmatningssystem og varme ble tilsatt til vannet ved hjelp av elektriske neddykkingsoppvarmere. Vann-temperaturen ble målt ved hjelp av en platina RTD (motstands-varmeinnretning) og regulert til 51,7°C ved en "av/på"-regulator som ga kraft til neddykkingsoppvarmerne. pH i vannet ble justert til pH 8,0 ved tilsetning av natriumhydroksyd (50%) og ble automatisk holdt på 8,0 ved hjelp av en regulator som matet HC1 (1% vandig løsning) til tanken som svar på en økning i pH. Air in a quantity of 283 standard dm<3>per hour (SCFH) was blown through a glass tube which was placed at one end of the tank and which extended to the bottom of the tank. The air blow-through was used to recirculate the water, oxygenate the water and aid in evaporation. The water level in the tank was automatically regulated with a gravity feed system and heat was added to the water using electric immersion heaters. The water temperature was measured using a platinum RTD (resistance heater) and regulated to 51.7°C by an "on/off" regulator that powered the immersion heaters. The pH of the water was adjusted to pH 8.0 by the addition of sodium hydroxide (50%) and was automatically maintained at 8.0 by a regulator that fed HC1 (1% aqueous solution) to the tank in response to an increase in pH.
2-fosfonobutantrikarboksylsyren ble innført i to separate tanker til en konsentrasjon på 150 ppm. Mangan i form av MnCl2.4H20 ble tilsatt til en av disse tankene til en konsentrasjon på 7,5 ppm Mn. pH i hver tank ble regulert til 8,0, ved bruk av fortynnet HC1. Karbonstålelektroder (1018) som ble renset med 1:1 HC1 og behandlet med 320° sandpapir for å fjerne alle overflateoksyder, ble festet til elektrodekorrosjonssondene og neddykket i tankene. De øyeblikkelige korrosjonshastighetene ble bestemt ved bruk av et potensiostatisk korrosjonshastig-hetsinstrument. Forsøkene ble utført i en periode på fem dager, ved hvilken tid konsentrasjonen av salter i badene var omtrent The 2-phosphonobutanetricarboxylic acid was introduced into two separate tanks at a concentration of 150 ppm. Manganese in the form of MnCl2.4H20 was added to one of these tanks to a concentration of 7.5 ppm Mn. The pH in each tank was adjusted to 8.0, using dilute HCl. Carbon steel electrodes (1018) that were cleaned with 1:1 HCl and treated with 320° sandpaper to remove all surface oxides were attached to the electrode corrosion probes and immersed in the tanks. The instantaneous corrosion rates were determined using a potentiostatic corrosion rate instrument. The experiments were carried out over a period of five days, at which time the concentration of salts in the baths was approx
8 8
fire ganger så stor som konsentrasjonen i matevannet. Ved slutten av denne tiden ble de endelige, gjennomsnittlige korrosjonshastighetene funnet å være 0,025 mmpå (millimeter pr. år) i tanken med mangan og 0,06 mmpå i tanken uten mangan. four times as great as the concentration in the feed water. At the end of this time, the final average corrosion rates were found to be 0.025 mmop (millimeters per year) in the tank with manganese and 0.06 mmop in the tank without manganese.
I to andre tanker under samme betingelser ble det utført en test ved bruk av mangan (samme kilde) alene i en tank og ingen additiver i den andre. Hver tank gav ved slutten av en fem dagers periode en gjennomsnittlig øyeblikkelig korrosjons-hastighet på 0,25 mmpå. In two other tanks under the same conditions, a test was carried out using manganese (same source) alone in one tank and no additives in the other. Each tank gave, at the end of a five day period, an average instantaneous corrosion rate of 0.25 mm.
EKSEMPLER 2 OG 3EXAMPLES 2 AND 3
To fosfinokarboksylsyrepolymerer, kommersielt tilgjengelige forbindelser, ble testet i kombinasjon med mangan mot karbonstål som i eksempel 1. Mangankilden var den samme. De endelige, gjennomsnittlige, øyeblikkelige korrosjonshastighetene (etter fem dager) fremgår i tabellform fra det følgende: Two phosphinocarboxylic acid polymers, commercially available compounds, were tested in combination with manganese against carbon steel as in Example 1. The manganese source was the same. The final average instantaneous corrosion rates (after five days) are tabulated from the following:
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2771487A | 1987-03-19 | 1987-03-19 |
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| EP (1) | EP0283191A3 (en) |
| JP (1) | JPS63259086A (en) |
| KR (1) | KR880011376A (en) |
| AU (1) | AU1321288A (en) |
| DK (1) | DK141388A (en) |
| FI (1) | FI881163A (en) |
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| GB9024470D0 (en) * | 1990-11-10 | 1991-01-02 | Ciba Geigy Ag | Corrision inhibition |
| US5760021A (en) * | 1992-05-29 | 1998-06-02 | The Procter & Gamble Company | Phosphonocarboxylate compounds pharmaceutical compositions, and methods for treating abnormal calcium and phosphate metabolism |
| US8025840B2 (en) | 2008-10-31 | 2011-09-27 | General Electric Company | Compositions and methods for inhibiting corrosion in aqueous media |
| EP3105366B1 (en) * | 2014-02-12 | 2018-04-04 | Kurita Water Industries Ltd. | Use of phospho-tartaric acid and the salts thereof for the treatment of water in water-conducting systems |
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| US3578708A (en) * | 1967-11-02 | 1971-05-11 | Hooker Chemical Corp | Metal sequestrant |
| US3901651A (en) * | 1971-06-07 | 1975-08-26 | Aquaphase Lab Inc | Treating water to retard corrosion |
| DE2723834A1 (en) * | 1977-05-26 | 1978-12-07 | Bayer Ag | REPRODUCTION PRODUCTS OF PHOSPHONOCARBONIC ACIDS WITH ALCOHOLS |
| DE2963154D1 (en) * | 1978-07-19 | 1982-08-12 | Ciba Geigy Ag | Corrosion inhibitors; compositions for protecting ferrous metals and the protected metals |
| AU572825B2 (en) * | 1983-03-03 | 1988-05-19 | Fmc Corporation (Uk) Limited | Inhibition of corrosion and scale formation of metal surfaces |
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1988
- 1988-03-08 EP EP88301999A patent/EP0283191A3/en not_active Withdrawn
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- 1988-03-11 FI FI881163A patent/FI881163A/en not_active IP Right Cessation
- 1988-03-15 DK DK141388A patent/DK141388A/en not_active Application Discontinuation
- 1988-03-17 AU AU13212/88A patent/AU1321288A/en not_active Abandoned
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| EP0283191A3 (en) | 1989-03-15 |
| DK141388D0 (en) | 1988-03-15 |
| DK141388A (en) | 1988-09-20 |
| ZA881767B (en) | 1989-11-29 |
| EP0283191A2 (en) | 1988-09-21 |
| FI881163A (en) | 1988-09-20 |
| FI881163A0 (en) | 1988-03-11 |
| JPS63259086A (en) | 1988-10-26 |
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