US2666738A - Bright silver plating - Google Patents
Bright silver plating Download PDFInfo
- Publication number
- US2666738A US2666738A US185171A US18517150A US2666738A US 2666738 A US2666738 A US 2666738A US 185171 A US185171 A US 185171A US 18517150 A US18517150 A US 18517150A US 2666738 A US2666738 A US 2666738A
- Authority
- US
- United States
- Prior art keywords
- silver
- alkali
- reaction product
- carbon disulfide
- ketone
- 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
- 229910052709 silver Inorganic materials 0.000 title claims description 47
- 239000004332 silver Substances 0.000 title claims description 47
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims description 45
- 238000007747 plating Methods 0.000 title claims description 15
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 claims description 59
- 239000007795 chemical reaction product Substances 0.000 claims description 40
- 239000002253 acid Substances 0.000 claims description 23
- 239000003513 alkali Substances 0.000 claims description 19
- 239000002659 electrodeposit Substances 0.000 claims description 15
- 150000002576 ketones Chemical class 0.000 claims description 12
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 10
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 10
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims description 9
- LFAGQMCIGQNPJG-UHFFFAOYSA-N silver cyanide Chemical compound [Ag+].N#[C-] LFAGQMCIGQNPJG-UHFFFAOYSA-N 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 8
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 7
- 239000011707 mineral Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical class CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 claims 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical group [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 48
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 27
- 238000007792 addition Methods 0.000 description 26
- 229940074993 carbon disulfide Drugs 0.000 description 25
- RGCKGOZRHPZPFP-UHFFFAOYSA-N alizarin Chemical compound C1=CC=C2C(=O)C3=C(O)C(O)=CC=C3C(=O)C2=C1 RGCKGOZRHPZPFP-UHFFFAOYSA-N 0.000 description 24
- 239000003921 oil Substances 0.000 description 23
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 18
- OJVAMHKKJGICOG-UHFFFAOYSA-N 2,5-hexanedione Chemical compound CC(=O)CCC(C)=O OJVAMHKKJGICOG-UHFFFAOYSA-N 0.000 description 16
- 229940083608 sodium hydroxide Drugs 0.000 description 16
- 235000011121 sodium hydroxide Nutrition 0.000 description 16
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 15
- 239000000243 solution Substances 0.000 description 14
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- 235000010755 mineral Nutrition 0.000 description 6
- -1 ammonium thiocyanate-formaldehyde Chemical compound 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 4
- 125000001539 acetonyl group Chemical group [H]C([H])([H])C(=O)C([H])([H])* 0.000 description 4
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 4
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- 206010001497 Agitation Diseases 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229960000583 acetic acid Drugs 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229940098221 silver cyanide Drugs 0.000 description 3
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005282 brightening Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 2
- JCBJVAJGLKENNC-UHFFFAOYSA-M potassium ethyl xanthate Chemical compound [K+].CCOC([S-])=S JCBJVAJGLKENNC-UHFFFAOYSA-M 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- ZUHZGEOKBKGPSW-UHFFFAOYSA-N tetraglyme Chemical compound COCCOCCOCCOCCOC ZUHZGEOKBKGPSW-UHFFFAOYSA-N 0.000 description 2
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- OZXIZRZFGJZWBF-UHFFFAOYSA-N 1,3,5-trimethyl-2-(2,4,6-trimethylphenoxy)benzene Chemical compound CC1=CC(C)=CC(C)=C1OC1=C(C)C=C(C)C=C1C OZXIZRZFGJZWBF-UHFFFAOYSA-N 0.000 description 1
- ZOBPZXTWZATXDG-UHFFFAOYSA-N 1,3-thiazolidine-2,4-dione Chemical compound O=C1CSC(=O)N1 ZOBPZXTWZATXDG-UHFFFAOYSA-N 0.000 description 1
- WGJCBBASTRWVJL-UHFFFAOYSA-N 1,3-thiazolidine-2-thione Chemical compound SC1=NCCS1 WGJCBBASTRWVJL-UHFFFAOYSA-N 0.000 description 1
- HRIJSYATNFJXHM-UHFFFAOYSA-N 2,6-diamino-1h-1,3,5-triazine-4-thione Chemical compound NC1=NC(=S)N=C(N)N1 HRIJSYATNFJXHM-UHFFFAOYSA-N 0.000 description 1
- OCVLSHAVSIYKLI-UHFFFAOYSA-N 3h-1,3-thiazole-2-thione Chemical compound SC1=NC=CS1 OCVLSHAVSIYKLI-UHFFFAOYSA-N 0.000 description 1
- QQLZTRHXUSFZOM-UHFFFAOYSA-N 6-amino-1h-1,3,5-triazine-2,4-dithione Chemical compound NC1=NC(=S)NC(=S)N1 QQLZTRHXUSFZOM-UHFFFAOYSA-N 0.000 description 1
- 238000006418 Brown reaction Methods 0.000 description 1
- NEZCWRHYVBPVGA-UHFFFAOYSA-N C(=S)=S.C(C(=O)C)CC(C)=O Chemical compound C(=S)=S.C(C(=O)C)CC(C)=O NEZCWRHYVBPVGA-UHFFFAOYSA-N 0.000 description 1
- AWNFREVPGMLRGV-UHFFFAOYSA-N C(=S)=S.C(C)C(=O)C Chemical compound C(=S)=S.C(C)C(=O)C AWNFREVPGMLRGV-UHFFFAOYSA-N 0.000 description 1
- IZYFRTLWOQKRSN-UHFFFAOYSA-N CC(=O)CCC(C)=O.CC(=O)CCC(C)=O Chemical compound CC(=O)CCC(C)=O.CC(=O)CCC(C)=O IZYFRTLWOQKRSN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- PDQAZBWRQCGBEV-UHFFFAOYSA-N Ethylenethiourea Chemical compound S=C1NCCN1 PDQAZBWRQCGBEV-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- XYXNTHIYBIDHGM-UHFFFAOYSA-N ammonium thiosulfate Chemical compound [NH4+].[NH4+].[O-]S([O-])(=O)=S XYXNTHIYBIDHGM-UHFFFAOYSA-N 0.000 description 1
- JIRRNZWTWJGJCT-UHFFFAOYSA-N carbamothioylthiourea Chemical compound NC(=S)NC(N)=S JIRRNZWTWJGJCT-UHFFFAOYSA-N 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 125000005594 diketone group Chemical group 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- CCGKOQOJPYTBIH-UHFFFAOYSA-N ethenone Chemical compound C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 description 1
- XLSMFKSTNGKWQX-UHFFFAOYSA-N hydroxyacetone Chemical compound CC(=O)CO XLSMFKSTNGKWQX-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- SHOJXDKTYKFBRD-UHFFFAOYSA-N mesityl oxide Natural products CC(C)=CC(C)=O SHOJXDKTYKFBRD-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229940093956 potassium carbonate Drugs 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- KIWUVOGUEXMXSV-UHFFFAOYSA-N rhodanine Chemical compound O=C1CSC(=S)N1 KIWUVOGUEXMXSV-UHFFFAOYSA-N 0.000 description 1
- 229940058349 sodium levulinate Drugs 0.000 description 1
- RDKYCKDVIYTSAJ-UHFFFAOYSA-M sodium;4-oxopentanoate Chemical compound [Na+].CC(=O)CCC([O-])=O RDKYCKDVIYTSAJ-UHFFFAOYSA-M 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/46—Electroplating: Baths therefor from solutions of silver
Definitions
- This invention relates; to silver plating and more particularly to the electrod'eposition' of bright silver depositsfrom silver cyanide plating baths.
- reactionproducts of ketones especially of acetone, methyl ethyl ketone and acetonylaoetone "(2,5-hexanedione) .with carbon disulfide and alkali hydroxide, when properly purified, are excellent brighteners for cyanide silver solutions.
- sulfur-containing compounds such as: carbon disulfide, ammonium thiosulfate, potassium ethyl xanthogenate, thiourea, alkali dithiocarbamates, mercaptobenzothiazole, mercaptothiazole and mercaptothiazoline have been'proposed and used as silver brighteners. Also the simultaneous use of Turkey red oil with potassium xanthogenate and of Turkey red oil with carbon disulfide as addition agents has been proposed.
- ketones of the general type RCH2COCH2R and carbon disulfide in the presence of powdered potassium hydroxide has been described by Apitzsch, Ber. 37, 1,599 (1904) 38, 2,888 (1905) and 41,4028 (1908).
- a preferred formula for an aqueous silver bath is:
- Turkey red oil or other bath components It has been found that ifonly 0.8 m1./l. of Turkey red oil (50%) is used, together with 0.02 to 0.04 oz./gal. of ketone-carbon. disulfide reaction product, there occurs, on standing of the bath, first an improvement of the bath performance, fol: lowed by a slow decrease of the brilliancy ofvthe silver deposit; but the brightness range is not narrowed. In this case, that is whenonly 0.8 m1./l. of Turkey red oil (50%) have been added, the initial excellent bath performance can be easily restored by the addition of small amounts of the ketone-carbon disulfide reaction product, approximately 0.01 oz./ gal. per week of standing.
- Example 1 22.8 g. (0.2 mol)v acetonylacetone 6,1 g. (0.8 mol) carbon. disulfide 96g. (1.2 mols) aqueous sodium hydroxide solution (50%) were put into a. 'c1'os ed bottle or flask supplied with reflux condenser.
- Example 2 0.2 mol acetonylacetone 0.8 mol carbon disulfide 1.2 mols aqueous sodium hydroxide. solution reacted as in Example 1.
- the brightener stock solution deteriorates slowly, apparently by formation of sodium sulfide but can be restored to its initial performance: by acidulation with acetic acid, boiling and neutralization.
- Example 3 0.2 mol acetonylacetone 0.8 mol carbon disulfide 1.2 mols aqueous sodium hydroxide solution reacted 'as-i'n Example 1'.
- Example 1 After the. mixture. had become homogeneous, it was cooled, to room temperature and 0.1 mol. (7.5 ml.) of aqueous. formaldehyde (37%) Was added. Anv exothermic reaction occurred, and after about 15. minutes the reaction mass was cooled, diluted andprecipitated as. in Example 1.
- Example 4 14.4 g. (0.2 mol) methyl ethyl ketone 30.5 g. (0.4 mol) carbon disulfide 48.0 g. (0.6 mol) aqueous sodium hydroxide solution (50%) The above was shaken occasionally in a closed bottle for about two weeks, after which time the mixture became homogeneous. Then .7.5' ml. (0.1 mol) of formaldehyde (37%) were added and, after standing forabout 15 minutes, an addition of 300 m1. of water and finally 0.6 mol of glacial acetic acid were made. The solution was heated to drive out all hydrogen sulfide; and after addition of 0.6 mol. of sodium hydroxide it was diluted to 400 ml. 4 ml.
- Example 6 10.5 g. (0.145 mo1) methyl ethyl ketone 19 g. (0.25 mol) carbon disulfide t 22 g. (0.39 mol) potassium hydroxide (powder),
- - 2.-A -process for producing bright silver elec trodeposits which comprises electrodepositing silver from an aqueous cyanidesilver plating bath containing 0.4 to 1.6 m1./l.' of an aqueous solution of Turkey red oil, 50%, and 0.02 to 0.04 oz./gal; (0.15 to 0.30 g./liter) of the solidywaterand acid insoluble but alkali soluble reaction product of a ketone of the formula RCHzCOCHs, where R comprises a substituent selected from the group consisting of hydrogen, alkyl, acetonyl (CH3COCH2) V and alkali metal carb'oxymethyl CH2CO ONa,
- ILJA process for producing bright-silver electrod'ep'osits which comprises electrodepositing silver from an aqueous cyanide silver plating bath cbntainingmi. to '1' .6 'mL/i. of an aqueous Solution of Turkey red'oil, 50%, and 0.02 to 10.04 on/gal. (0.15 to.
- a process for producing bright silver electrodeposits which comprises electrodepositing silver from an aqueous cyanide.-- silver plating bath containing 0.4 to 1.6 m1 .71. of an aqueous solutionof Turkey red oil, 50%, and 0.02 to 0.04 oz./gal.
- irom an aqueous cyanide silver; plating bath containing 0.4 to 1.6 n l/l. of an aqueous solution (of, Turkey red oil, 50%, and "0.012 to 0.04 oz ./gal. (0.15 -to.0.30 g ./liter) of the solid, waterand acid insoluble but alkali soluble reaction product of a ketone, selected from. a :gmup consistingiof acetonylacetone, methyl; ethyl .ketone and acetone, with carbon disu-l fide and alkalivhy di xide, t is r act n product havi been pro.
- a :gmup consistingiof acetonylacetone, methyl; ethyl .ketone and acetone, with carbon disu-l fide and alkalivhy di xide, t is r act n product havi been pro.
- a proces .i p ducin bri ht si ver electrodeposits which comprises electrodepofiting .and acid insoluble but alkali soluble reaction product of a ketone, selected from a group-consisting of acetonylacetone, methyl ethyl ketone and acetone with substantially two mols carbon disulfide per mol carbonyl group and at least one and a half mols alkali hydroxide, in the form of, a -.concentrated' aqueous solution, per mol' carbon disulfide, this reaction having been allowed to proceed between 30 and 50 G.-at least until the initially heterogeneous reaction mixture became homogeneous and this reaction product having been precipitated by addition of a strong mineral acid and freed from alkali sulfide and hydrogen sul
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE505842D BE505842A (is") | 1950-09-15 | ||
| NL77004D NL77004C (is") | 1950-09-15 | ||
| US185171A US2666738A (en) | 1950-09-15 | 1950-09-15 | Bright silver plating |
| GB18556/51A GB690978A (en) | 1950-09-15 | 1951-08-07 | Bright silver plating |
| CH298147D CH298147A (fr) | 1950-09-15 | 1951-08-27 | Procédé de galvanostégie en vue d'obtenir des dépôts d'argent brillants. |
| FR1048094D FR1048094A (fr) | 1950-09-15 | 1951-09-07 | Perfectionnements aux procédés et bains pour l'obtention de dépôts électrolytiques d'argent brillant |
| DEL10081A DE885036C (de) | 1950-09-15 | 1951-09-14 | Verfahren zur Erzeugung glaenzender Silberniederschlaege |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US185171A US2666738A (en) | 1950-09-15 | 1950-09-15 | Bright silver plating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2666738A true US2666738A (en) | 1954-01-19 |
Family
ID=22679905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US185171A Expired - Lifetime US2666738A (en) | 1950-09-15 | 1950-09-15 | Bright silver plating |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2666738A (is") |
| BE (1) | BE505842A (is") |
| CH (1) | CH298147A (is") |
| DE (1) | DE885036C (is") |
| FR (1) | FR1048094A (is") |
| GB (1) | GB690978A (is") |
| NL (1) | NL77004C (is") |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2800439A (en) * | 1954-06-26 | 1957-07-23 | Degussa | Bright metal plating |
| US2807576A (en) * | 1955-01-18 | 1957-09-24 | Hanson Van Winkle Munning Co | Bright silver plating |
| US3065184A (en) * | 1957-09-27 | 1962-11-20 | Harvel Res Corp | Acetone-formaldehyde reaction product corrosion inhibitor |
| US3120462A (en) * | 1960-09-16 | 1964-02-04 | Trifari Krussman And Fishel In | Apparatus for recovering electroplating salts by evaporative concentration |
| US4247372A (en) * | 1978-08-29 | 1981-01-27 | Learonal, Inc. | Silver plating |
| US4478691A (en) * | 1981-10-13 | 1984-10-23 | At&T Bell Laboratories | Silver plating procedure |
| US5422085A (en) * | 1993-06-10 | 1995-06-06 | Inco Limited | Catalytic conversion of internal combustion engine exhaust gases |
| US5981793A (en) * | 1996-03-23 | 1999-11-09 | Blasberg Oberflachentechnik Gmbh | Slightly water-soluble metal salts, a process for the preparation thereof, and the use thereof as gloss additives in the electrolytic deposition of metals |
| US7628903B1 (en) * | 2000-05-02 | 2009-12-08 | Ishihara Chemical Co., Ltd. | Silver and silver alloy plating bath |
| US20240035184A1 (en) * | 2020-12-11 | 2024-02-01 | Umicore Galvanotechnik Gmbh | Silver-Bismuth Electrolyte for Separating Hard Silver Layers |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE959775C (de) * | 1954-09-18 | 1957-03-14 | Max Schloetter Fa Dr Ing | Cyankalisches Bad zur galvanischen Abscheidung glaenzender Silberniederschlaege |
| US3238112A (en) * | 1962-07-03 | 1966-03-01 | Du Pont | Electroplating of metals using mercapto-metal complex salts |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2110792A (en) * | 1936-03-23 | 1938-03-08 | Int Silver Co | Process for electrodeposition of silver and products obtained therefrom |
| US2113517A (en) * | 1935-01-26 | 1938-04-05 | Johnson Matthey Co Ltd | Electrodeposition of silver |
| US2176668A (en) * | 1938-02-10 | 1939-10-17 | Int Silver Co | Silver plating process |
-
0
- NL NL77004D patent/NL77004C/xx active
- BE BE505842D patent/BE505842A/xx unknown
-
1950
- 1950-09-15 US US185171A patent/US2666738A/en not_active Expired - Lifetime
-
1951
- 1951-08-07 GB GB18556/51A patent/GB690978A/en not_active Expired
- 1951-08-27 CH CH298147D patent/CH298147A/fr unknown
- 1951-09-07 FR FR1048094D patent/FR1048094A/fr not_active Expired
- 1951-09-14 DE DEL10081A patent/DE885036C/de not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2113517A (en) * | 1935-01-26 | 1938-04-05 | Johnson Matthey Co Ltd | Electrodeposition of silver |
| US2110792A (en) * | 1936-03-23 | 1938-03-08 | Int Silver Co | Process for electrodeposition of silver and products obtained therefrom |
| US2176668A (en) * | 1938-02-10 | 1939-10-17 | Int Silver Co | Silver plating process |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2800439A (en) * | 1954-06-26 | 1957-07-23 | Degussa | Bright metal plating |
| US2807576A (en) * | 1955-01-18 | 1957-09-24 | Hanson Van Winkle Munning Co | Bright silver plating |
| US3065184A (en) * | 1957-09-27 | 1962-11-20 | Harvel Res Corp | Acetone-formaldehyde reaction product corrosion inhibitor |
| US3120462A (en) * | 1960-09-16 | 1964-02-04 | Trifari Krussman And Fishel In | Apparatus for recovering electroplating salts by evaporative concentration |
| US4247372A (en) * | 1978-08-29 | 1981-01-27 | Learonal, Inc. | Silver plating |
| US4478691A (en) * | 1981-10-13 | 1984-10-23 | At&T Bell Laboratories | Silver plating procedure |
| US5422085A (en) * | 1993-06-10 | 1995-06-06 | Inco Limited | Catalytic conversion of internal combustion engine exhaust gases |
| US5981793A (en) * | 1996-03-23 | 1999-11-09 | Blasberg Oberflachentechnik Gmbh | Slightly water-soluble metal salts, a process for the preparation thereof, and the use thereof as gloss additives in the electrolytic deposition of metals |
| US7628903B1 (en) * | 2000-05-02 | 2009-12-08 | Ishihara Chemical Co., Ltd. | Silver and silver alloy plating bath |
| US20090321269A1 (en) * | 2000-05-02 | 2009-12-31 | Ishihara Chemical Co., Ltd. | Silver and silver alloy plating bath |
| US7938948B2 (en) | 2000-05-02 | 2011-05-10 | Ishihara Chemical Co., Ltd. | Silver and silver alloy plating bath |
| US20240035184A1 (en) * | 2020-12-11 | 2024-02-01 | Umicore Galvanotechnik Gmbh | Silver-Bismuth Electrolyte for Separating Hard Silver Layers |
Also Published As
| Publication number | Publication date |
|---|---|
| CH298147A (fr) | 1954-04-30 |
| GB690978A (en) | 1953-04-29 |
| BE505842A (is") | |
| NL77004C (is") | |
| FR1048094A (fr) | 1953-12-18 |
| DE885036C (de) | 1953-07-30 |
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