US1734706A - Cleaning metal surface - Google Patents
Cleaning metal surface Download PDFInfo
- Publication number
- US1734706A US1734706A US98404A US9840426A US1734706A US 1734706 A US1734706 A US 1734706A US 98404 A US98404 A US 98404A US 9840426 A US9840426 A US 9840426A US 1734706 A US1734706 A US 1734706A
- Authority
- US
- United States
- Prior art keywords
- dichromate
- cleaning
- alkaline
- trisodium phosphate
- checking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004140 cleaning Methods 0.000 title description 12
- 229910052751 metal Inorganic materials 0.000 title description 11
- 239000002184 metal Substances 0.000 title description 11
- 239000001488 sodium phosphate Substances 0.000 description 14
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 14
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 14
- 235000019801 trisodium phosphate Nutrition 0.000 description 14
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 10
- 239000003599 detergent Substances 0.000 description 10
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 10
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 9
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- -1 chromate compound Chemical class 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 229910052783 alkali metal Inorganic materials 0.000 description 5
- 150000001340 alkali metals Chemical class 0.000 description 5
- 230000002401 inhibitory effect Effects 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000012459 cleaning agent Substances 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 235000017550 sodium carbonate Nutrition 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000003518 caustics Substances 0.000 description 3
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910021538 borax Inorganic materials 0.000 description 2
- 239000006071 cream Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000004328 sodium tetraborate Substances 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000212342 Sium Species 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000011536 re-plating Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- SOBHUZYZLFQYFK-UHFFFAOYSA-K trisodium;hydroxy-[[phosphonatomethyl(phosphonomethyl)amino]methyl]phosphinate Chemical compound [Na+].[Na+].[Na+].OP(O)(=O)CN(CP(O)([O-])=O)CP([O-])([O-])=O SOBHUZYZLFQYFK-UHFFFAOYSA-K 0.000 description 1
- 238000005406 washing Methods 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
- 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
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/16—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions using inhibitors
Definitions
- the chromate compound may be a water soluble chromate or dichromate,
Landscapes
- 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)
Description
Patented Nov. 5, 192 9 un -ran STATES PATENT OFFICE .ADLEB, OF CHICAGO HEIGHTS, ILLINOIS, ASSIGNQB, TO DIVERSE! MANUFAC- TUBING COMPANY, A CORPORATION OF ILLINOIS CLEANING METAL SURFACE 80 Drawing.
scription, in which specific examples illustrating my invention will be more fully set forth.
Tin plated sheet metal and containers there of, particularly when used in the handling 10 of food products such as milk, cream or the like, become covered with fatty deposits, for the removal of which it has hitherto been customary to employ alkaline cleaners, such as sodium carbonate, trisodium phosphate,
soap powders, borax and the like. Such containers, for example, milk and cream cans, require frequent and thorough cleaning and it has been found that the action of cleaning agents such as those hitherto used result in a corrosion and checking of the tin plating.
The life-of the tin plating is thus greatly lessened, and frequently replating is required In accordance with this invention, the
checking and corrosion of the tin plating under the action of the cleaning agent of an alkaline nature are prevented by providing during the cleansing, a chromate compound, the presence of which I have found to inhibit or entirely prevent the checking and corrosion of the plating. It is preferred that the chromate compound be incorporated in or admixed with the alkaline cleaning agent from which the cleaning solution for washing the tin platedmetal or container is made. If
desired, however, the oxidizing agent may be separately incorporated in the alkaline cleaning solution.
The alkaline cleaning agent employed in carrying out this invention may be one of the ordinary alkaline substances used for that purpose; for example, trisodium phosphate, soda ash, soap powder, borax, caustic alkali, or the like. It is preferred, however, that the caustic alkalies such as sodium hydroxide, be
Application filed Mai-ch29, 1926. Serial No. 98,404.
not employed. The chromate compound may be a water soluble chromate or dichromate,
preferably of an alkali metal, as sodium, am-
monium or potassium dichromate or chromate.
The proportion of the chromate compound relative to the alkaline substance may be greatly varied; thus, proportions as low as 1% of the alkaline cleansing agents are found to substantially inhibit-checking or corrosion of the tin plating. Proportions up to l0% may be employed, or even higher if desired, although in general, a suitable range is from 3 to 5% of the oxidizing agent. -In preparing the cleansing solution, from to 8 ounces of the cleaning alkaline substance may be employed per gallon of water, together with the desired proportion of the oxidizing agent. Thus, one-half ounce of trisodium phosphate per gallon of water is found to have an appreciable checking action upon tin plate in ten minutes at a temperature of 65 C. The addition of 1% of potassium dichromate (based upon the amount of trisodium phosphate) substantially inhibits checking action with concentrations as high as eight ounces per gallon when the application is continued up to sixty minutes at 65 C. From 3 to 5% of potassium dichromate completely prevents checking on a treatment of tin plated surfaces with concentrations up to eight ounces per gallon for ten minutes at 65 (1., and substantially inhibits checking action with concentrations of trisodium phosphate up to eight ounces per gallon when treatment is continued for sixty minutes at 75 C.
Soda ash, in concentrations as low as onehalf ounce per gallon, causes checking within sium dichromate appreciably inhibits checking.
Three to five Her cent of potassium dichromate substantia y prevents checking by soda ash even in concentrations up to eight ounces per gallon and at temperatures of 75 0. when treatment is continued as long as sixty minutes.
Other chromates and dichromates, for example, sodium dichromate are similar in their action topotassium dichromate as set forth above. V
My preferred composition is one containing trisodium phosphate and a chromate compound; for example, 3 to; 5% of potassium dichromate or sodium dichromate.
I claim:
1. The method of cleaning tinned metal surfaces and inhibiting corrosion of the tin thereof which comprises subjecting such surfaces to the action of a water soluble chromate compound and of an alkaline detergent.
2. The method of cleaning tinned metal surfaces and inhibiting corrosion of the tin thereof which comprises-subjectin such surfaces to the action of a solution of trisodium phosphate in the presence of a dichromate of an alkali metal.
3. The method of cleaning tinned metal surfaces and inhibiting corrosion of the tin thereof which comprises subjecting such surfaces to the action of a solution of trisodium phosphate in the presence of sodium dichromate.
4. A detergent for tinnedmetal surfaces comprising a major portion of a soluble noncaustic alkaline detergent and a minor portion of a water soluble chromate compound.
5. A detergent for tinned metal surfaces comprising a majorportion of a soluble noncaustic alkaline detergent and a minor portion of a dichromate of an alkali metal.
6. A detergent composition for tinned metal surfaces comprismg a major portion of trisodium phosphate and a minor portion of sodium dichromate.
7. The method of cleaning tinned metal surfaces and inhibiting corrosion of the tin thereof which comprises subjecting such surfaces to the action of a solution of trisodium phosphate in the presence of a dichromate of an alkali metal, the dichromate being present in an amount equal to from one to five percent of the trisodium phosphate.
8. The method of cleaning tinned metal surfaces and inhibiting corrosion of the tin thereof which comprises subjecting such surfaces to the action of a solution of trisodium phosphate in the presence of sodium dichromate,'the sodium dichromate being present in an amount equal to from one to five percent of the trisodium phosphate.
9. A detergent for tinned metal surfaces comprising a soluble non-caustic alkaline demetal surfaces comprising trisodium phos- I phate and sodium dichromate, the sodium dichromate bein present in an amount equal to from one to ve percent of the trisodium phosphate.
11. The method of cleaning tinned metalagainst corrosion and checking.
HOWARD ADLER'.
tergent and a dichromate of an alkali metal,
the alkali' dichromate being resent in an amount equal to from one to ve percent of the alkaline detergent. w i
10. A detergent composition for tinned
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US98404A US1734706A (en) | 1926-03-29 | 1926-03-29 | Cleaning metal surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US98404A US1734706A (en) | 1926-03-29 | 1926-03-29 | Cleaning metal surface |
Publications (1)
Publication Number | Publication Date |
---|---|
US1734706A true US1734706A (en) | 1929-11-05 |
Family
ID=22269131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US98404A Expired - Lifetime US1734706A (en) | 1926-03-29 | 1926-03-29 | Cleaning metal surface |
Country Status (1)
Country | Link |
---|---|
US (1) | US1734706A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2424718A (en) * | 1942-08-17 | 1947-07-29 | Continental Can Co | Electrolytic treatment of tin plate for preventing sulphur staining |
US2450509A (en) * | 1945-09-12 | 1948-10-05 | Crown Cork & Seal Co | Tin plate treatment |
US2450508A (en) * | 1945-09-12 | 1948-10-05 | Crown Cork & Seal Co | Tin plate treatment |
US2711391A (en) * | 1953-06-29 | 1955-06-21 | W H & L D Betz | Phosphate-chromate corrosion protection in water systems |
US3080323A (en) * | 1959-04-07 | 1963-03-05 | Purex Corp Ltd | Composition for radioactive decontamination and descaling of cobalt alloys |
US3447973A (en) * | 1966-08-17 | 1969-06-03 | Dow Chemical Co | Protective treatment for magnesium |
EP0154950A2 (en) * | 1984-03-10 | 1985-09-18 | HENKEL CORPORATION (a Delaware corp.) | Tin-plate degreasing detergent |
-
1926
- 1926-03-29 US US98404A patent/US1734706A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2424718A (en) * | 1942-08-17 | 1947-07-29 | Continental Can Co | Electrolytic treatment of tin plate for preventing sulphur staining |
US2450509A (en) * | 1945-09-12 | 1948-10-05 | Crown Cork & Seal Co | Tin plate treatment |
US2450508A (en) * | 1945-09-12 | 1948-10-05 | Crown Cork & Seal Co | Tin plate treatment |
US2711391A (en) * | 1953-06-29 | 1955-06-21 | W H & L D Betz | Phosphate-chromate corrosion protection in water systems |
US3080323A (en) * | 1959-04-07 | 1963-03-05 | Purex Corp Ltd | Composition for radioactive decontamination and descaling of cobalt alloys |
US3447973A (en) * | 1966-08-17 | 1969-06-03 | Dow Chemical Co | Protective treatment for magnesium |
EP0154950A2 (en) * | 1984-03-10 | 1985-09-18 | HENKEL CORPORATION (a Delaware corp.) | Tin-plate degreasing detergent |
EP0154950A3 (en) * | 1984-03-10 | 1987-01-28 | HENKEL CORPORATION (a Delaware corp.) | Tin-plate degreasing detergent |
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