CN114574867A - Rust remover and preparation method and application thereof - Google Patents
Rust remover and preparation method and application thereof Download PDFInfo
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- CN114574867A CN114574867A CN202210164723.XA CN202210164723A CN114574867A CN 114574867 A CN114574867 A CN 114574867A CN 202210164723 A CN202210164723 A CN 202210164723A CN 114574867 A CN114574867 A CN 114574867A
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- rust remover
- acetate
- sodium
- rust
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 238000002360 preparation method Methods 0.000 title abstract description 24
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 72
- -1 organic acid salt Chemical class 0.000 claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 36
- 239000004094 surface-active agent Substances 0.000 claims abstract description 16
- 150000007524 organic acids Chemical class 0.000 claims abstract description 14
- 239000002738 chelating agent Substances 0.000 claims abstract description 13
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000006184 cosolvent Substances 0.000 claims abstract description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 9
- 229940069428 antacid Drugs 0.000 claims abstract description 9
- 239000003159 antacid agent Substances 0.000 claims abstract description 9
- 230000001458 anti-acid effect Effects 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 7
- 230000002265 prevention Effects 0.000 claims abstract description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 99
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 50
- 238000003756 stirring Methods 0.000 claims description 44
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 claims description 30
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 29
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 29
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 29
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 29
- ABBQHOQBGMUPJH-UHFFFAOYSA-M Sodium salicylate Chemical compound [Na+].OC1=CC=CC=C1C([O-])=O ABBQHOQBGMUPJH-UHFFFAOYSA-M 0.000 claims description 26
- 229960004025 sodium salicylate Drugs 0.000 claims description 26
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 23
- 239000011609 ammonium molybdate Substances 0.000 claims description 23
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 23
- 229940010552 ammonium molybdate Drugs 0.000 claims description 23
- 229920000058 polyacrylate Polymers 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000011684 sodium molybdate Substances 0.000 claims description 13
- 235000015393 sodium molybdate Nutrition 0.000 claims description 13
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 13
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims description 12
- 125000005010 perfluoroalkyl group Chemical group 0.000 claims description 10
- 229920000193 polymethacrylate Polymers 0.000 claims description 10
- 150000004702 methyl esters Chemical class 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 7
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000001509 sodium citrate Substances 0.000 claims description 6
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 6
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 claims description 6
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- HFBJSTFZKGUQJO-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,4-nonafluorobutyl acetate Chemical compound C(C)(=O)OC(C(C(C(F)(F)F)(F)F)(F)F)(F)F HFBJSTFZKGUQJO-UHFFFAOYSA-N 0.000 claims description 2
- JHPRZDIVCIVXPC-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctyl acetate Chemical compound CC(=O)OC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F JHPRZDIVCIVXPC-UHFFFAOYSA-N 0.000 claims description 2
- HEIZQLUAIYQRCU-UHFFFAOYSA-N C(C)(=O)OC(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F Chemical compound C(C)(=O)OC(C(C(C(C(C(F)(F)F)(F)F)(F)F)(F)F)(F)F)(F)F HEIZQLUAIYQRCU-UHFFFAOYSA-N 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 235000009518 sodium iodide Nutrition 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- RPAJSBKBKSSMLJ-DFWYDOINSA-N (2s)-2-aminopentanedioic acid;hydrochloride Chemical class Cl.OC(=O)[C@@H](N)CCC(O)=O RPAJSBKBKSSMLJ-DFWYDOINSA-N 0.000 abstract description 2
- 150000004673 fluoride salts Chemical class 0.000 abstract description 2
- 231100000053 low toxicity Toxicity 0.000 abstract 1
- 239000008367 deionised water Substances 0.000 description 24
- 229910021641 deionized water Inorganic materials 0.000 description 24
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 17
- 230000001276 controlling effect Effects 0.000 description 15
- 238000001816 cooling Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 8
- 239000007787 solid Substances 0.000 description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 6
- 239000011737 fluorine Substances 0.000 description 6
- 229910052731 fluorine Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Natural products CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229960004106 citric acid Drugs 0.000 description 4
- 239000003112 inhibitor Substances 0.000 description 4
- 229960004838 phosphoric acid Drugs 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 230000003405 preventing effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229940075581 sodium bromide Drugs 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 150000002500 ions Chemical group 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229940094035 potassium bromide Drugs 0.000 description 1
- 229960004839 potassium iodide Drugs 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/088—Iron or steel solutions containing organic acids
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/40—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing molybdates, tungstates or vanadates
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/24—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a rust remover and a preparation method and application thereof. The rust remover comprises the following components in parts by weight: 100-300 parts of organic acid and/or organic acid salt, 5-20 parts of phosphoric acid, 3-10 parts of chelating agent, 0.5-2 parts of antacid, 1-3 parts of molybdate, 2-5 parts of surfactant and 80-200 parts of cosolvent, and the balance of water. The rust remover disclosed by the invention has the advantages that strong acid and fluoride salt do not exist, the safety of the rust remover is enhanced, low-toxicity, environment-friendly and efficient perfluoroalkyl acetate is introduced for the first time, the surface activity is ultrahigh, and the rust remover also has certain lubricity, so that the rust remover prepared by the invention is quick in rust removal time, obvious in rust removal effect and good in rust prevention effect.
Description
Technical Field
The invention belongs to the technical field of rust removal, and particularly relates to a rust remover and a preparation method and application thereof.
Background
The rust is always a great problem which troubles the production and the life of human beings, and in the process of industrial production and social development, the most contacted metal is an iron base material, and metallic iron is also one of the most easily rusted metals. In the life of the modern people, a large amount of metal is corroded and rusted every year, so that resources and energy are wasted, and further huge economic losses are caused.
The research on the aspect has been already available, and the rust remover on the market is also eight-door with five flowers and eight doors, so that the real effect is obvious, quick and few, wherein particularly in the chemical production, the rust screw on the flange is most simply disassembled, and the rust remover with good and quick effect is particularly needed. If the rust remover is common and has poor effect, safety accidents are likely to be caused, so that the development of the rust remover with rapid and obvious rust removal and remarkable rust prevention effect is an urgent problem to be solved.
Disclosure of Invention
The invention mainly aims to provide a rust remover and a preparation method and application thereof, so as to overcome the defects of the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention comprises the following steps:
the embodiment of the invention provides a rust remover which comprises the following components in parts by weight: 100-300 parts of organic acid and/or organic acid salt, 5-20 parts of phosphoric acid, 3-10 parts of chelating agent, 0.5-2 parts of antacid, 1-3 parts of molybdate, 2-5 parts of surfactant and 80-200 parts of cosolvent, and the balance of water.
In some more specific embodiments, the rust remover comprises the following components in parts by weight: 200-280 parts of a mixture of citric acid and sodium salicylate, 10-20 parts of phosphoric acid, 3-10 parts of sodium polyacrylate and/or ammonium polyacrylate, 0.5-2 parts of potassium bromide and/or potassium iodide, 1-3 parts of sodium molybdate and/or ammonium molybdate, 2-5 parts of perfluoroalkyl group C6 straight chain methyl ester and/or perfluoroalkyl group C6 branched chain methyl ester and 80-200 parts of polyvinylpyrrolidone, and the balance of water, and also provides a preparation method of the rust remover, which comprises the following steps: mixing organic acid and/or organic acid salt, phosphoric acid, an acid making agent, molybdate and water, stirring for 0.5-4 h at room temperature or after proper temperature rise, and then sequentially adding a chelating agent, a cosolvent and a surfactant, and uniformly mixing and stirring to obtain the rust remover.
The embodiment of the invention also provides a preparation method of the rust remover, which comprises the following steps: mixing organic acid and/or organic acid salt, phosphoric acid, an acid making agent, molybdate and water, stirring at room temperature for 0.5-4 h, then sequentially adding a chelating agent, a cosolvent and a surfactant, and uniformly mixing and stirring to obtain the rust remover.
The embodiment of the invention also provides the application of the rust remover in the field of metal rust removal or prevention.
Compared with the prior art, the invention has the beneficial effects that: the rust remover disclosed by the invention has the advantages that strong acid and fluoride salt do not exist, the rust removing liquid is mild in condition, the pH value is neutral or weakly acidic, the safety of the rust remover is enhanced, and a durable ultrathin anticorrosive coating can be formed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a graph showing comparison of rust removing time of the rust remover in examples 1 to 8 and comparative examples 1 to 8 of the present invention;
FIG. 2 is a pH value diagram of the rust removing agent in examples 1 to 8 and comparative examples 1 to 8 of the present invention.
Detailed Description
In view of the defects of the prior art, the inventor of the present invention has long studied and largely practiced to propose the technical solution of the present invention, which will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
One aspect of an embodiment of the invention provides a rust remover, which is characterized by comprising the following components in parts by weight: 100-300 parts of organic acid and/or organic acid salt, 5-20 parts of phosphoric acid, 3-10 parts of chelating agent, 0.5-2 parts of antacid, 1-3 parts of molybdate, 2-5 parts of surfactant and 80-200 parts of cosolvent, and the balance of water.
Further, the total parts of the rust remover are 1000 parts.
In some more specific embodiments, the organic acid and/or organic acid salt includes any one or a combination of two or more of citric acid, sodium citrate, and sodium salicylate, and is not limited thereto.
Further, the organic acid and/or organic acid salt comprises a mixture of citric acid and sodium salicylate, wherein the mass ratio of the citric acid to the sodium salicylate is 1.0-1.6: 1.
In some more specific embodiments, the chelating agent includes any one or a combination of two or more of sodium polyacrylate, ammonium polyacrylate, sodium polymethacrylate, and ammonium polymethacrylate, and is not limited thereto.
Further, the chelating agent includes ammonium polyacrylate, and is not limited thereto.
In some more specific embodiments, the antacid includes any one or a combination of two or more of sodium bromide, potassium bromide, sodium iodide, and potassium iodide, without being limited thereto.
Further, the antacid includes potassium bromide and/or potassium iodide, and is not limited thereto.
In some more specific embodiments, the molybdate salt includes sodium molybdate and/or ammonium molybdate, without limitation.
Further, the molybdate includes ammonium molybdate, and is not limited thereto.
In some more specific embodiments, the surfactant includes, but is not limited to, a perfluoroalkyl acetate.
Further, the total number of carbon atoms of the perfluoroalkyl group in the perfluoroalkyl acetate is C4 to C9, and is not limited thereto.
Further, the perfluoroalkyl acetate includes a linear or branched fluoroalkyl acetate, and is not limited thereto.
Further, the perfluoroalkyl acetate includes any one or a combination of two or more of perfluorobutyl acetate, perfluoropentyl acetate, perfluorohexyl acetate, perfluoroheptyl acetate, perfluorooctyl acetate, and perfluorononyl acetate, without being limited thereto.
Further, the perfluoroalkyl acetate includes a branched or linear type perfluorohexyl methyl acetate, and is not limited thereto.
Further, the perfluoroalkyl acetate includes perfluoroalkyl C6 branched methyl ester, and is not limited thereto.
In some more specific embodiments, the co-solvent includes, without limitation, pyrrolidone.
Further, the pyrrolidone includes N-methylpyrrolidone and/or polyvinylpyrrolidone, and is not limited thereto.
Further, the pyrrolidone includes polyvinylpyrrolidone, and is not limited thereto.
In some more specific embodiments, the rust remover comprises the following components in parts by weight: 200-280 parts of a mixture of citric acid and sodium salicylate, 10-20 parts of phosphoric acid, 3-10 parts of sodium polyacrylate and/or ammonium polyacrylate, 0.5-2 parts of potassium bromide and/or potassium iodide, 1-3 parts of sodium molybdate and/or ammonium molybdate, 2-5 parts of perfluoroalkyl C6 linear methyl ester and/or perfluoroalkyl C6 branched methyl ester, 80-200 parts of polyvinylpyrrolidone, and the balance of water.
In some more specific embodiments, the rust remover comprises the following components in parts by weight: 255 parts of a mixture of citric acid and sodium salicylate, 15 parts of phosphoric acid, 4 parts of ammonium polyacrylate, 1 part of potassium bromide and/or potassium iodide, 1.5 parts of ammonium molybdate, 4 parts of perfluoroalkyl C6 branched methyl ester, 120 parts of polyvinylpyrrolidone and the balance of water.
Another aspect of an embodiment of the present invention also provides a preparation method of the foregoing rust remover, including: mixing organic acid and/or organic acid salt, phosphoric acid, an acid making agent, molybdate and water, stirring for 0.5-4 h at room temperature or after proper temperature rise, then sequentially adding a chelating agent, a cosolvent and an interfacial agent, and uniformly mixing and stirring to obtain the rust remover.
In some more specific embodiments, the method for preparing the rust remover comprises: firstly, adding organic acid and salts thereof, an acid making agent, molybdate and phosphoric acid into pure water at room temperature, stirring for 0.5-2 h, adding a chelating agent after full dissolution, stirring for 0.5-1h, adding a cosolvent, stirring for 0.5-1h, finally adding a surfactant, and quickly stirring for 1-2 h to obtain the rust remover.
According to another aspect of the embodiment of the invention, the application of the rust remover in the metal rust removing or preventing field is further provided.
The technical solution of the present invention is further described in detail with reference to several preferred embodiments, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
The experimental materials used in the examples used below were all available from conventional biochemical reagents companies, unless otherwise specified.
Example 1
The rust remover in the embodiment comprises the following components in parts by weight: 200 parts of citric acid, 10 parts of phosphoric acid, 3 parts of sodium polyacrylate, 0.8 part of potassium bromide, 1.5 parts of sodium molybdate, 4.5 parts of perfluorobutyl methyl acetate, 100 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method of the rust remover comprises the following steps:
(1) according to the weight parts, firstly adding deionized water into a reactor, starting stirring, controlling the rotating speed not to be too fast, controlling the rotating speed to be 50-80rpm, sequentially adding citric acid, phosphoric acid, potassium bromide and sodium molybdate, heating to 50 ℃, and completely dissolving the solid;
(2) cooling to 40 ℃, adjusting the rotating speed to 100rpm, adding sodium polyacrylate, stirring for 40min, adding polyvinylpyrrolidone, and stirring for ih;
(3) and (3) regulating the rotation speed to 120rpm, dropwise adding methyl perfluorobutylacetate into the reactor, stirring for 1h after the dropwise adding is finished within 1.5h, and standing and discharging to obtain the rust remover.
Example 2
The rust remover in the embodiment comprises the following components in parts by weight: 150 parts of citric acid, 130 parts of sodium citrate, 10 parts of phosphoric acid, 3 parts of ammonium polyacrylate, 1 part of potassium bromide, 1.5 parts of sodium molybdate, 3.5 parts of perfluorohexyl methyl acetate, 100 parts of N-methyl pyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method of the rust remover comprises the following steps:
(1) according to the weight parts, firstly adding deionized water into a reactor, starting stirring, controlling the rotating speed not to be too fast, controlling the rotating speed to be 50-80rpm, sequentially adding citric acid, sodium citrate, phosphoric acid, potassium bromide and sodium molybdate, heating to 50 ℃, and completely dissolving solids;
(2) cooling to 40 deg.C, adjusting rotation speed to 100rpm, adding ammonium polyacrylate, stirring for 40min, adding N-methylpyrrolidone, and stirring for 1 h;
(3) and (3) regulating the rotation speed to 120rpm, dropwise adding perfluorohexyl methyl acetate into the reactor, stirring for 1h after dropwise adding is finished within 1.5h, and standing and discharging to obtain the rust remover.
Example 3
The rust remover in the embodiment comprises the following components in parts by weight: 150 parts of citric acid, 130 parts of sodium citrate, 13 parts of phosphoric acid, 4 parts of ammonium polyacrylate, 1 part of potassium bromide, 1.5 parts of sodium molybdate, 3.5 parts of perfluorohexyl methyl acetate, 100 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method of the rust remover comprises the following steps:
(1) according to the weight parts, firstly adding deionized water into a reactor, starting stirring, controlling the rotating speed not to be too fast, controlling the rotating speed to be 50-80rpm, sequentially adding citric acid, sodium citrate, phosphoric acid, potassium bromide and sodium molybdate, heating to 50 ℃, and completely dissolving solids;
(2) cooling to 40 ℃, adjusting the rotating speed to 100rpm, adding ammonium polyacrylate, stirring for 40min, adding polyvinylpyrrolidone, and stirring for 1 h;
(3) and (3) regulating the rotation speed to 120rpm, dropwise adding perfluorohexyl methyl acetate into the reactor, stirring for 1h after dropwise adding is finished within 1.5h, and standing and discharging to obtain the rust remover.
Example 4
The rust remover in the embodiment comprises the following components in parts by weight: 145 parts of citric acid, 110 parts of sodium salicylate, 15 parts of phosphoric acid, 4 parts of ammonium polyacrylate, 1 part of potassium bromide, 1.5 parts of ammonium molybdate, 4 parts of perfluorohexyl methyl acetate, 120 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method of the rust remover comprises the following steps:
(1) according to the weight parts, firstly adding deionized water into a reactor, starting stirring, controlling the rotating speed not to be too fast, controlling the rotating speed to be 50-80rpm, sequentially adding citric acid, sodium salicylate, phosphoric acid, potassium bromide and ammonium molybdate, heating to 50 ℃, and completely dissolving the solid;
(2) cooling to 40 ℃, adjusting the rotating speed to 100rpm, adding ammonium polyacrylate, stirring for 40min, adding polyvinylpyrrolidone, and stirring for 1 h;
(3) and (3) regulating the rotation speed to 120rpm, dropwise adding perfluorohexyl methyl acetate into the reactor, stirring for 1h after dropwise adding is finished within 1.5h, and standing and discharging to obtain the rust remover.
Example 5
The rust remover in the embodiment comprises the following components in parts by weight: 160 parts of citric acid, 100 parts of sodium salicylate, 15 parts of phosphoric acid, 4 parts of ammonium polyacrylate, 0.9 part of potassium bromide, 1.2 parts of sodium molybdate, 3.2 parts of perfluorooctyl methyl acetate, 160 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method of the rust remover comprises the following steps:
(1) according to the weight parts, firstly adding deionized water into a reactor, starting stirring, controlling the rotating speed not to be too fast, controlling the rotating speed to be 50-80rpm, sequentially adding citric acid, sodium salicylate, phosphoric acid, potassium bromide and sodium molybdate, heating to 50 ℃, and completely dissolving the solid;
(2) cooling to 40 ℃, adjusting the rotating speed to 100rpm, adding ammonium polyacrylate, stirring for 40min, adding polyvinylpyrrolidone, and stirring for ih;
(3) and (3) regulating the rotation speed to 120rpm, dropwise adding perfluorooctyl methyl acetate into the reactor, stirring for 1h after the dropwise adding is finished within 1.5h, and standing and discharging to obtain the rust remover.
Example 6
The rust remover in the embodiment comprises the following components in parts by weight: 50 parts of citric acid, 50 parts of sodium salicylate, 5 parts of phosphoric acid, 3 parts of sodium polymethacrylate, 0.5 part of potassium iodide, 1 part of ammonium molybdate, 2 parts of perfluoropentyl methyl acetate, 80 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method of the rust remover comprises the following steps:
(1) according to the weight parts, firstly adding deionized water into a reactor, starting stirring, controlling the rotating speed not to be too fast, controlling the rotating speed to be 50-80rpm, sequentially adding citric acid, sodium salicylate, phosphoric acid, potassium iodide and ammonium molybdate, heating to 50 ℃, and completely dissolving the solid;
(2) cooling to 40 ℃, adjusting the rotating speed to 100rpm, adding sodium polymethacrylate, stirring for 40min, adding polyvinylpyrrolidone, and stirring for 1 h;
(3) and (3) regulating the rotation speed to 120rpm, dropwise adding perfluoropentyl methyl acetate into the reactor, stirring for 1h after dropwise adding is finished within 1.5h, and standing and discharging to obtain the rust remover.
Example 7
The rust remover in the embodiment comprises the following components in parts by weight: 150 parts of citric acid, 150 parts of sodium salicylate, 20 parts of phosphoric acid, 10 parts of ammonium polymethacrylate, 2 parts of sodium bromide, 3 parts of ammonium molybdate, 5 parts of perfluoroheptyl ethyl acetate, 200 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method of the rust remover comprises the following steps:
(1) adding deionized water into a reactor according to parts by weight, starting stirring, controlling the rotating speed not to be too fast and the rotating speed to be 50-80rpm, sequentially adding citric acid, sodium salicylate, phosphoric acid, sodium bromide and ammonium molybdate, heating to 50 ℃, and completely dissolving solids;
(2) cooling to 40 ℃, adjusting the rotating speed to 100rpm, adding ammonium polymethacrylate, stirring for 40min, adding polyvinylpyrrolidone, and stirring for 1 h;
(3) and (3) regulating the rotation speed to 120rpm, dropwise adding ethyl perfluoroheptyl acetate into the reactor, stirring for 1h after dropwise adding is finished within 1.5h, and standing and discharging to obtain the rust remover.
Example 8
The rust remover in the embodiment comprises the following components in parts by weight: 150 parts of citric acid, 150 parts of sodium salicylate, 20 parts of phosphoric acid, 10 parts of ammonium polymethacrylate, 2 parts of sodium bromide, 3 parts of ammonium molybdate, 5 parts of perfluorononyl ethyl acetate, 200 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method of the rust remover comprises the following steps:
(1) according to the weight parts, firstly adding deionized water into a reactor, starting stirring, controlling the rotating speed not to be too fast, controlling the rotating speed to be 50-80rpm, sequentially adding citric acid, sodium salicylate, phosphoric acid, sodium bromide and ammonium molybdate, heating to 50 ℃, and completely dissolving the solid;
(2) cooling to 40 ℃, adjusting the rotating speed to 100rpm, adding ammonium polymethacrylate, stirring for 40min, adding polyvinylpyrrolidone, and stirring for 1 h;
(3) and (3) regulating the rotation speed to 120rpm, dropwise adding ethyl perfluoroheptyl acetate into the reactor, stirring for 1h after dropwise adding is finished within 1.5h, and standing and discharging to obtain the rust remover.
Comparative example 1
The rust remover in the embodiment comprises the following components in parts by weight: 255 parts of citric acid, 15 parts of phosphoric acid, 4 parts of ammonium polyacrylate, 1 part of potassium bromide, 1.5 parts of ammonium molybdate, 4 parts of perfluorohexyl methyl acetate, 120 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total weight is 1000 parts; the preparation method is the same as example 4.
Comparative example 2
The rust remover in the embodiment comprises the following components in parts by weight: 15 parts of phosphoric acid, 4 parts of ammonium polyacrylate, 1 part of potassium bromide, 1.5 parts of ammonium molybdate, 4 parts of perfluorohexyl methyl acetate, 120 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total weight is 1000 parts; the preparation method is the same as example 4.
Comparative example 3
The rust remover in the embodiment comprises the following components in parts by weight: 145 parts of citric acid, 110 parts of sodium salicylate, 15 parts of phosphoric acid, 4 parts of ammonium polyacrylate, 1 part of potassium bromide, 1.5 parts of ammonium molybdate, 120 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method is the same as example 4.
Comparative example 4
The rust remover in the embodiment comprises the following components in parts by weight: 145 parts of citric acid, 110 parts of sodium salicylate, 15 parts of phosphoric acid, 4 parts of ammonium polyacrylate, 1 part of potassium bromide, 1.5 parts of ammonium molybdate, 4 parts of perfluorohexyl methyl acetate and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method is the same as example 4.
Comparative example 5
The rust remover in the embodiment comprises the following components in parts by weight: 145 parts of citric acid, 110 parts of sodium salicylate, 4 parts of ammonium polyacrylate, 1 part of potassium bromide, 1.5 parts of ammonium molybdate, 4 parts of perfluorohexyl methyl acetate, 120 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method is the same as example 4.
Comparative example 6
The rust remover in the embodiment comprises the following components in parts by weight: 145 parts of citric acid, 110 parts of sodium salicylate, 15 parts of phosphoric acid, 1 part of potassium bromide, 1.5 parts of ammonium molybdate, 4 parts of perfluorohexyl methyl acetate, 120 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total amount is 1000 parts; the preparation method is the same as example 4.
Comparative example 7
The rust remover in the embodiment comprises the following components in parts by weight: 145 parts of citric acid, 110 parts of sodium salicylate, 15 parts of phosphoric acid, 4 parts of ammonium polyacrylate, 1.5 parts of ammonium molybdate, 4 parts of perfluorohexyl methyl acetate, 120 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total weight is 1000 parts; the preparation method is the same as example 4.
Comparative example 8
The rust remover in the embodiment comprises the following components in parts by weight: 145 parts of citric acid, 110 parts of sodium salicylate, 15 parts of phosphoric acid, 4 parts of ammonium polyacrylate, 1 part of potassium bromide, 4 parts of perfluorohexyl methyl acetate, 120 parts of polyvinylpyrrolidone and the balance of deionized water, wherein the total parts are 1000 parts; the preparation method is the same as example 4.
The rust removers of examples 1 to 5 and comparative examples 1 to 8 were subjected to performance tests according to the following procedures:
(1) the carbon steel bolt and nut of M20 is purchased from the market, is completely screwed on a steel flange of DN200 and is screwed under the same condition; (2) soaking the flange of the screw bolt in the step (1) in a 5% sodium chloride solution for 12 hours, taking out the flange, and horizontally placing the flange under an eave for 30 days (with the nut upward); (3) the rust removers of examples 1 to 5 and comparative examples 1 to 8 were sprayed with 1.5ml of each of 1 to 13# bolts and nuts, 1.5ml of 5% diluted hydrochloric acid was further sprayed on 14# bolts and nuts, two types of commercially available rust removers A and B were sprayed on 1.5ml of each of 15# and 16# bolts and nuts, respectively, and the time for peeling off rust on each bolt, the loosening after 2min, the influence of the bolt surface after slight purging, and the presence or absence of rust after leaving for 7 days were observed, and the test results are shown in Table 1:
TABLE 1 test results of rust inhibitors in examples 1 to 5 and comparative examples 1 to 8 and existing rust inhibitors
*: example 8 and comparative example 4 were not completely dissolved and precipitated.
And (3) performance characterization: FIG. 1 shows a comparison of the rust removing time in examples 1 to 8 and comparative examples 1 to 8; the pH values of the rust removers in examples 1 to 8 and comparative examples 1 to 8 are shown in fig. 2. In FIGS. 1 to 2, examples 1 to 8 correspond to rust inhibitors of examples 1 to 8, respectively, and pairs 1 to 8 correspond to rust inhibitors of comparative examples 1 to 8, respectively.
As can be seen from Table 1 and figures 1-2, the rust remover prepared by the invention has obvious effect, high rust removing speed, mild condition and better rust preventing effect, and from the view point of action effect and environmental protection, the straight chain or branched chain type perfluoroalkyl methyl acetate or ethyl ester of C6 is more suitable to be selected in the invention, and meanwhile, the rust removing mechanism is inferred from the test and the result, the hydrogen ions generated by the system firstly react with rust stains to produce metal ions, at the moment, the chelating agent and the metal ions form a chelate, the organic fluorine surfactant has stronger hydrophobicity, the chelate dissolved in water is replaced out of the metal surface, so the organic fluorine surfactant is attached to the metal surface, and simultaneously the organic fluorine surfactant has certain lubricity, the friction force of the metal surface can be effectively reduced, and the phenomenon that the nut in the embodiment is easy to loosen and screw is not difficult to release, in addition, the organic fluorine surfactant has ultralow surface tension, can cooperate with molybdate and film forming factors in a system to form an ultrathin coating on the metal surface, so that the antirust capacity of the metal is enhanced, the organic fluorine surfactant in the system can be decomposed to generate organic acid after being attached to the metal surface for a long time, and the organic acid and the antacid and the like remained in the system can also prolong the anticorrosion performance of the metal. Therefore, the application of the organic fluorine surfactant in the rust remover is a large and prominent bright spot, and has more advantages.
In addition, the inventors of the present invention have also made experiments with other materials, process operations, and process conditions described in the present specification with reference to the above examples, and have obtained preferable results.
It should be understood that the technical solutions of the present invention are not limited to the above specific embodiments, and any technical modifications made according to the technical solutions of the present invention fall within the protection scope of the present invention without departing from the spirit of the present invention and the scope of the claims.
Claims (10)
1. The rust remover is characterized by comprising the following components in parts by weight: 100-300 parts of organic acid and/or organic acid salt, 5-20 parts of phosphoric acid, 3-10 parts of chelating agent, 0.5-2 parts of antacid, 1-3 parts of molybdate, 2-5 parts of surfactant and 80-200 parts of cosolvent, and the balance of water.
2. The rust remover as claimed in claim 1, characterized in that: the organic acid and/or organic acid salt comprises one or more of citric acid, sodium citrate and sodium salicylate, preferably a mixture of citric acid and sodium salicylate, wherein the mass ratio of the citric acid to the sodium salicylate is 1.0-1.6: 1.
3. The rust remover as claimed in claim 1, characterized in that: the chelating agent comprises any one or combination of more than two of sodium polyacrylate, ammonium polyacrylate, sodium polymethacrylate and ammonium polymethacrylate, and preferably ammonium polyacrylate.
4. The rust remover as claimed in claim 1, characterized in that: the antacid comprises any one or the combination of more than two of sodium bromide, potassium bromide, sodium iodide and potassium iodide; preferably, the antacid comprises potassium bromide and/or potassium iodide.
5. The rust remover as claimed in claim 1, characterized in that: the molybdate comprises sodium molybdate and/or ammonium molybdate, preferably ammonium molybdate.
6. The rust remover as claimed in claim 1, characterized in that: the surfactant comprises a perfluoroalkyl acetate;
preferably, the total carbon atoms of the perfluoroalkyl groups in the perfluoroalkyl acetate are C4-C9; preferably, the perfluoroalkyl acetate comprises a linear or branched fluoroalkyl acetate; preferably, the perfluoroalkyl acetate comprises one or the combination of more than two of perfluorobutyl acetate, perfluoropentyl acetate, perfluorohexyl acetate, perfluoroheptyl acetate, perfluorooctyl acetate and perfluorononyl acetate; particularly preferably, the perfluoroalkyl acetate comprises methyl perfluorohexyl acetate, which may be branched or linear.
7. The rust remover as claimed in claim 1, wherein: the co-solvent comprises pyrrolidone; preferably, the pyrrolidone comprises N-methyl pyrrolidone and/or polyvinylpyrrolidone; polyvinylpyrrolidone is particularly preferred.
8. The rust remover as claimed in claim 1, characterized by comprising the following components in parts by weight: 200-280 parts of a mixture of citric acid and sodium salicylate, 10-20 parts of phosphoric acid, 3-10 parts of sodium polyacrylate and/or ammonium polyacrylate, 0.5-2 parts of potassium bromide and/or potassium iodide, 1-3 parts of sodium molybdate and/or ammonium molybdate, 2-5 parts of perfluoroalkyl C6 linear methyl ester and/or perfluoroalkyl C6 branched methyl ester, 80-200 parts of polyvinylpyrrolidone, and the balance of water.
9. A method for producing a rust remover as claimed in any one of claims 1 to 8, characterized by comprising: mixing organic acid and/or organic acid salt, phosphoric acid, an acid making agent, molybdate and water, stirring at room temperature for 0.5-4 h, then sequentially adding a chelating agent, a cosolvent and a surfactant, and uniformly mixing and stirring to obtain the rust remover.
10. Use of the rust remover as claimed in any one of claims 1 to 8 in the field of metal rust removal or prevention.
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