GB762961A - Improvements in or relating to the removal of tarnish from silver, silver, silver alloy or silver plated articles - Google Patents
Improvements in or relating to the removal of tarnish from silver, silver, silver alloy or silver plated articlesInfo
- Publication number
- GB762961A GB762961A GB29220/53A GB2922053A GB762961A GB 762961 A GB762961 A GB 762961A GB 29220/53 A GB29220/53 A GB 29220/53A GB 2922053 A GB2922053 A GB 2922053A GB 762961 A GB762961 A GB 762961A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- acid
- solution
- tarnished
- metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title abstract 11
- 229910052709 silver Inorganic materials 0.000 title abstract 9
- 239000004332 silver Substances 0.000 title abstract 9
- 229910001316 Ag alloy Inorganic materials 0.000 title abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 6
- 239000002184 metal Substances 0.000 abstract 6
- 239000000243 solution Substances 0.000 abstract 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical group Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 4
- 239000002253 acid Substances 0.000 abstract 4
- 235000011149 sulphuric acid Nutrition 0.000 abstract 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000001117 sulphuric acid Substances 0.000 abstract 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 abstract 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 abstract 1
- 235000015165 citric acid Nutrition 0.000 abstract 1
- 230000000536 complexating effect Effects 0.000 abstract 1
- 238000002845 discoloration Methods 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- BRWIZMBXBAOCCF-UHFFFAOYSA-N hydrazinecarbothioamide Chemical compound NNC(N)=S BRWIZMBXBAOCCF-UHFFFAOYSA-N 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 235000011090 malic acid Nutrition 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000080 wetting agent Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0073—Anticorrosion compositions
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0042—Reducing agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/042—Acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/34—Organic compounds containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/08—Acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/34—Organic compounds containing sulfur
-
- 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
- C23G1/10—Other heavy metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/16—Metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Printing Plates And Materials Therefor (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
762,961. Electrolytically removing tarnish from silver, silver alloys and silver plate. GOLD, SILVER & JEWELLERY INDUSTRIES, DESIGN & RESEARCH CENTRE FOR THE, and GODDARD & SONS, Ltd., J. Oct. 12, 1954 [Oct. 22, 1953], No. 29220/53. Class 41. Tarnished silver, silver alloys, and silverplated articles are cleaned by treating with an aqueous solution containing an acid stronger than hydrosulphuric acid which is not such as will attack silver to any appreciable extent and a soluble silver-complexing compound to reduce the silver ion concentration while maintaining the silver and any other metal in the tarnished article more electronegative than another conducting member in the solution. Worn silver plate exposing the under metal or articles comprising silver and another metal may be so treated without discoloration of the non-silvered areas. The complexing compound is preferably thiourea or thiosemicarbazide and the solution may also include a non-ionic wetting agent. Either (a) the tarnished article is maintained in contact with a more electropositive metal in the treating solution which is dissolved by the acid therein, or (b) it is made the cathode in an electrolytic cell containing the treating solution as electrolyte. Typically, for method (a) the electropositive metal is aluminium, although it can be nickel, and may form a basket in which the tarnished articles are placed for immersion in a solution in which the acid component is hydrochloric acid, alone or admixed with sulphuric acid or aminosulphonic acid or sulphuric acid mixed with chloracetic acid although sulphuric, citric and malic acids may be used with some metals; while for method (b) the anode is of carbon or aluminium and the acid is hydrochloric acid. Specification 722,255, [Group II], is referred to.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE532709D BE532709A (en) | 1953-10-22 | ||
| GB29220/53A GB762961A (en) | 1953-10-22 | 1953-10-22 | Improvements in or relating to the removal of tarnish from silver, silver, silver alloy or silver plated articles |
| US463315A US2801961A (en) | 1953-10-22 | 1954-10-19 | Tarnish remover |
| CH331865D CH331865A (en) | 1953-10-22 | 1954-10-21 | Process for cleaning metallic objects |
| FR1114948D FR1114948A (en) | 1953-10-22 | 1954-10-22 | Improvements to remove tarnish from silver objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29220/53A GB762961A (en) | 1953-10-22 | 1953-10-22 | Improvements in or relating to the removal of tarnish from silver, silver, silver alloy or silver plated articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB762961A true GB762961A (en) | 1956-12-05 |
Family
ID=10288056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29220/53A Expired GB762961A (en) | 1953-10-22 | 1953-10-22 | Improvements in or relating to the removal of tarnish from silver, silver, silver alloy or silver plated articles |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2801961A (en) |
| BE (1) | BE532709A (en) |
| CH (1) | CH331865A (en) |
| FR (1) | FR1114948A (en) |
| GB (1) | GB762961A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353786A (en) * | 1981-06-22 | 1982-10-12 | S. C. Johnson & Son, Inc. | Electrolytic silver tarnish removal method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1068388A (en) * | 1912-04-12 | 1913-07-22 | James M Hotchkiss | Apparatus for cleaning gold, silver, and other metal ware. |
| US1274186A (en) * | 1917-06-23 | 1918-07-30 | Larkin Co | Method of cleaning metal articles. |
| US2051697A (en) * | 1934-12-31 | 1936-08-18 | Drackett Co | Liquid cleaner for silverware |
-
0
- BE BE532709D patent/BE532709A/xx unknown
-
1953
- 1953-10-22 GB GB29220/53A patent/GB762961A/en not_active Expired
-
1954
- 1954-10-19 US US463315A patent/US2801961A/en not_active Expired - Lifetime
- 1954-10-21 CH CH331865D patent/CH331865A/en unknown
- 1954-10-22 FR FR1114948D patent/FR1114948A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE532709A (en) | |
| US2801961A (en) | 1957-08-06 |
| CH331865A (en) | 1958-08-15 |
| FR1114948A (en) | 1956-04-18 |
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