NO122048B - - Google Patents
Download PDFInfo
- Publication number
- NO122048B NO122048B NO2658/69A NO265869A NO122048B NO 122048 B NO122048 B NO 122048B NO 2658/69 A NO2658/69 A NO 2658/69A NO 265869 A NO265869 A NO 265869A NO 122048 B NO122048 B NO 122048B
- Authority
- NO
- Norway
- Prior art keywords
- salt
- potassium
- compounds
- hydrazine
- cyanide
- Prior art date
Links
- 150000001875 compounds Chemical class 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 14
- 239000003792 electrolyte Substances 0.000 claims description 11
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 125000003545 alkoxy group Chemical group 0.000 claims description 4
- 125000003282 alkyl amino group Chemical group 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 125000001841 imino group Chemical group [H]N=* 0.000 claims description 4
- -1 methylamino , phenylamino Chemical group 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Chemical group 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 150000007529 inorganic bases Chemical class 0.000 claims description 3
- 150000007530 organic bases Chemical class 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 claims description 2
- 125000004442 acylamino group Chemical group 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000003863 ammonium salts Chemical class 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 229910000510 noble metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 claims 1
- 239000011593 sulfur Substances 0.000 claims 1
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical class CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 8
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 159000000000 sodium salts Chemical class 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000005282 brightening Methods 0.000 description 3
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 3
- 229940065287 selenium compound Drugs 0.000 description 3
- 150000003343 selenium compounds Chemical class 0.000 description 3
- 239000000080 wetting agent Substances 0.000 description 3
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 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 2
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 2
- SWWYYSCBYSFMOB-UHFFFAOYSA-N [K].N#CO[Se]OC#N Chemical compound [K].N#CO[Se]OC#N SWWYYSCBYSFMOB-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229940058905 antimony compound for treatment of leishmaniasis and trypanosomiasis Drugs 0.000 description 2
- 150000001463 antimony compounds Chemical class 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- OWIUPIRUAQMTTK-UHFFFAOYSA-N carbazic acid Chemical compound NNC(O)=O OWIUPIRUAQMTTK-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052711 selenium Inorganic materials 0.000 description 2
- 239000011669 selenium Substances 0.000 description 2
- 229940091258 selenium supplement Drugs 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 150000003558 thiocarbamic acid derivatives Chemical class 0.000 description 2
- VDMJCVUEUHKGOY-JXMROGBWSA-N (1e)-4-fluoro-n-hydroxybenzenecarboximidoyl chloride Chemical compound O\N=C(\Cl)C1=CC=C(F)C=C1 VDMJCVUEUHKGOY-JXMROGBWSA-N 0.000 description 1
- XCWPBWWTGHQKDR-UHFFFAOYSA-N 1,3-dithiolane-2-thione Chemical compound S=C1SCCS1 XCWPBWWTGHQKDR-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- AYTPIVIDHMVGSX-UHFFFAOYSA-N 2,1,3-benzoselenadiazole Chemical compound C1=CC=CC2=N[se]N=C21 AYTPIVIDHMVGSX-UHFFFAOYSA-N 0.000 description 1
- YJZOPBSZDIBXBG-UHFFFAOYSA-N 2-methylthiophene-3-carboxylic acid Chemical compound CC=1SC=CC=1C(O)=O YJZOPBSZDIBXBG-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- COEWIOVAZWGZBG-UHFFFAOYSA-N aminocarbamothioic s-acid Chemical class NNC(O)=S COEWIOVAZWGZBG-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- BVTBRVFYZUCAKH-UHFFFAOYSA-L disodium selenite Chemical compound [Na+].[Na+].[O-][Se]([O-])=O BVTBRVFYZUCAKH-UHFFFAOYSA-L 0.000 description 1
- USAIOOFEIMNEDN-UHFFFAOYSA-L disodium;carbonotrithioate Chemical compound [Na+].[Na+].[S-]C([S-])=S USAIOOFEIMNEDN-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002429 hydrazines Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- WREDNSAXDZCLCP-UHFFFAOYSA-N methanedithioic acid Chemical compound SC=S WREDNSAXDZCLCP-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- ODMABOBKUUZKJB-UHFFFAOYSA-M potassium;n-aminocarbamodithioate Chemical compound [K+].NNC([S-])=S ODMABOBKUUZKJB-UHFFFAOYSA-M 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229960001471 sodium selenite Drugs 0.000 description 1
- 239000011781 sodium selenite Substances 0.000 description 1
- 235000015921 sodium selenite Nutrition 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 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
Description
Cyanidholdig elektrolytt for utfelling av Cyanide-containing electrolyte for precipitation of
skinnende sølvovertrekk. shiny silver cover.
Oppfinnelsen angår en cyanidholdig solvelektrolytt for galva-nisk utfelling av skinnende solvovertrekk. The invention relates to a cyanide-containing solar electrolyte for galvanic deposition of shiny solar coatings.
Det er kjent at uorganiske eller organiske stoffer kan tilsettes som glansgivende stoffer til cyanidholdige solvbad. Som uorganisk stoff er det kjent å anvende f.eks. selenforbindelser eller forbindelser av metaller i 5- hovedgruppe i det periodiske system, som f.eks. antimonforbindelser. It is known that inorganic or organic substances can be added as gloss-giving substances to cyanide-containing sunbaths. As an inorganic substance, it is known to use e.g. selenium compounds or compounds of metals in main group 5 in the periodic table, such as e.g. antimony compounds.
Det er som organiske stoffer spesielt blitt foreslått å anvende slike forbindelser som inneholder thiocarbo- eller mercaptogrupper i molekylet, som f.eks. thiocarbonater, xanthogenater og thiocarbamater. Til disse horer også omsetningsprodukter av carbondisulfjd med ketoner (tysk patentskrift nr. 885.036), med dithiocarbazatei (tysk patentskrift nr. 359- 775) eller med acrolein hhv. a-substitu- As organic substances, it has been particularly suggested to use such compounds which contain thiocarbo or mercapto groups in the molecule, such as e.g. thiocarbonates, xanthogenates and thiocarbamates. These also include reaction products of carbon disulfide with ketones (German patent no. 885,036), with dithiocarbazate (German patent no. 359-775) or with acrolein or a-substitu-
sjonsprodukter derav (tysk patentskrift nr. 958.795). sion products thereof (German patent document no. 958,795).
Disse kjente glansgivende stoffer er særpreget ved at de er beheftet med en eller flere av en rekke ulemper hvorav de viktigste er: 1) Solvutfellingen er ofte meget uklar og har derved intet dekora-tivt utseende. Den må dessuten poleres. 2) Solvutfellingen er bare skinnende innenfor et begrenset stromtetthetsområde og utfelles matt spesielt innen det lavere stromtetthetsområde. Dette innebærer at det på profilerte deler bare kan oppnåes skinnende utfellinger på de ytre flater, men ikke i fordypningene. These known gloss-giving substances are characterized by the fact that they are affected by one or more of a number of disadvantages, the most important of which are: 1) The sol precipitation is often very cloudy and thus has no decorative appearance. It also needs to be polished. 2) The sol precipitation is only shiny within a limited current density range and is precipitated matte especially within the lower current density range. This means that on profiled parts shiny deposits can only be achieved on the outer surfaces, but not in the recesses.
På den annen side er det også en ulempe ved det for snevre stromtetthetsområde at store deler får grovkrystallinske, matte steder ved anvendelse av det hoyere stromtetthetsområde. 3) En rekke av de glansgivende stoffer lar seg ikke fremstille rene da det ved fremstilling av disse dannes en rekke biprodukter ved en mindre oversiktlig reaksjon og som ikke alltid kan fjernes. De glansgivende stoffers virkning varierer derfor sterkt alt etter stoffenes innhold av forstyrrende biprodukter, og dette kan lett fore til en over- eller underdosering og derved til en nedsettelse av muligheten for ved anvendelse av elektrolytten å oppnå glans og glansdybdespredning. On the other hand, it is also a disadvantage of the too narrow current density range that large parts get coarsely crystalline, matte areas when the higher current density range is used. 3) A number of the gloss-giving substances cannot be produced pure, as a number of by-products are formed during the production of these in a less transparent reaction and which cannot always be removed. The effect of the gloss-giving substances therefore varies greatly depending on the substance's content of disturbing by-products, and this can easily lead to an over- or underdosing and thereby to a reduction in the possibility of achieving gloss and gloss depth spread when using the electrolyte.
Det er i fransk patentskrift nr." 1. h75-290 også blitt foreslått å anvende salter av hydrazin-N-thiocarboxylsyreamid-N'-dithiocarbo-xylsyre og av thiourinstoff-N-amino-N'-dithiocarboxylsyre som glansgivende stoffer for cyanidholdige sblvbad. Disse tilsetningsmidler har. imidlertid også den ulempe at de ikke gir en i praksis tilstrek-kelig glansdybdespredning. It has also been proposed in French patent document no. 1. h75-290 to use salts of hydrazine-N-thiocarboxylic acid amide-N'-dithiocarboxylic acid and of thiourea-N-amino-N'-dithiocarboxylic acid as brightening substances for cyanide-containing sblv baths However, these additives also have the disadvantage that they do not provide a practically sufficient gloss depth spread.
Det tas derfor ved foreliggende oppfinnelse sikte på å tilveie-bringe et glansgivende stoff for cyanidholdige solvbad og som ikke er beheftet med de nevnte ulemper. The aim of the present invention is therefore to provide a gloss-giving substance for cyanide-containing sunbaths which is not affected by the aforementioned disadvantages.
Dette oppnåes ifolge oppfinnelsen ved en cyanidholdig solvelektrolytt som er. særpreget ved at den inneholder minst en forbindelse med den generelle formel This is achieved according to the invention by a cyanide-containing solar electrolyte which is characterized by the fact that it contains at least one compound with the general formula
hvor R er where R is
hvor R" er hydrogen eller lavere alkyl, fortrinnsvis methyl, X where R" is hydrogen or lower alkyl, preferably methyl, X
er svovel, oxygen eller en iminogruppe, R' er en alifatisk hydro-carbongruppe med fortrinnsvis 1- 5 carbonatomer, lavere alkoxy, fortrinnsvis methoxy, lavere alkylamino, fortrinnsvis methylamino, fenylamino eller radikalet is sulphur, oxygen or an imino group, R' is an aliphatic hydrocarbon group with preferably 1-5 carbon atoms, lower alkoxy, preferably methoxy, lower alkylamino, preferably methylamino, phenylamino or the radical
hvor n er et helt tall fra 1 til 3 og R'" er halogen, lavere alkyl, lavere alkoxy, lavere alkylamino eller acylamino, idet når X er oxygen eller en iminogruppe, kan R' også være NR^, eHer e^ salt av denne forbindelse med en uorganisk eller organisk base. where n is an integer from 1 to 3 and R'" is halogen, lower alkyl, lower alkoxy, lower alkylamino or acylamino, wherein when X is oxygen or an imino group, R' can also be NR^, eHer e^ salt of this compound with an inorganic or organic base.
Forbindelsene kan tilsettes til elektrolytten enten i fri form eller i form av deres salter med uorganiske eller organiske baser, f.eks. som edelmetallsalter, som solvsaltet, som alkalimetallsalter, som natrium- eller kalimsaltet, eller som ammoniumsalt, som triethylammoniumsaltet. The compounds can be added to the electrolyte either in free form or in the form of their salts with inorganic or organic bases, e.g. as noble metal salts, as the sol salt, as alkali metal salts, as the sodium or potassium salt, or as ammonium salt, as the triethylammonium salt.
De folgende forbindelser kan nevnes som eksempel: The following compounds can be mentioned as examples:
1. Kaliumsaltet av hydrazin-N-carboxylsyreamid-N'-dithiocarboxyl-syren, 1. The potassium salt of hydrazine-N-carboxylic acid amide-N'-dithiocarboxylic acid,
H2N-cb-NH-NH-CSSK H2N-cb-NH-NH-CSSK
2. Triethylammoniumsaltet av hydrazin-N-methylthiocarboxylsyreamid-N'-dithiocarboxylsyren, 2. The triethylammonium salt of hydrazine-N-methylthiocarboxylic acid amide-N'-dithiocarboxylic acid,
CH^-NH-CS-NH-NH-CSSNH(C2H^)^CH^-NH-CS-NH-NH-CSSNH(C2H^)^
3. Kaliumsaltet av hydrazin-N-methylthiocarboxylsyreamid-N'-di-thiocarboxylsyren, 3. The potassium salt of hydrazine-N-methylthiocarboxylic acid amide-N'-dithiocarboxylic acid,
CH^NH-CS-NH-NH-CSSK CH^NH-CS-NH-NH-CSSK
h. Triethylammoniumsaltet av hydrazin-N-methylthiocarboxylsyreamid-N-methyl-N<1->dithiocarboxylsyren, h. The triethylammonium salt of hydrazine-N-methylthiocarboxylic acid amide-N-methyl-N<1->dithiocarboxylic acid,
5. Triethylammoniumsaltet av hydrazin-N-fenylthiocarboxylsyreamid-N'-dithiocarboxylsyren, 5. The triethylammonium salt of hydrazine-N-phenylthiocarboxylic acid amide-N'-dithiocarboxylic acid,
C6H^-NH-CS-NH-NH-CSSNH(C2H^)3C6H^-NH-CS-NH-NH-CSSNH(C2H^)3
6. Kaliumsaltet av hydrazin-N-carbomethoxy-N'-dithiocarboxylsyren, 6. The potassium salt of hydrazine-N-carbomethoxy-N'-dithiocarboxylic acid,
CH^-O-CO-NH-NH-CSSK CH^-O-CO-NH-NH-CSSK
7. Natriumsaltet av hydrazin-N-guanyl-N'-dithiocarboxylsyren, 7. The sodium salt of the hydrazine-N-guanyl-N'-dithiocarboxylic acid,
H2N-CNH-NH-NH-CSSNa H2N-CNH-NH-NH-CSSNa
8. Natriumsaltet av hydrazin-N-methylguanyl-N'-dithiocarboxylsyren, 8. The sodium salt of hydrazine-N-methylguanyl-N'-dithiocarboxylic acid,
CB^-NH-CNH-NH-NH-CS-SH CB^-NH-CNH-NH-NH-CS-SH
9. Natriumsaltet av hydrazin-N-ethylguanyl-N'-dithiocarboxylsyren, 9. The sodium salt of hydrazine-N-ethylguanyl-N'-dithiocarboxylic acid,
C 2H^-NH-CNH-NH-NH-C S -SH C 2 H 2 -NH-CNH-NH-NH-C S -SH
Disse forbindelser er i og for seg kjente eller de kan fremstilles ved i og for seg kjente fremgangsmåter, som beskrevet f.eks. i "Berichte der Deutschen Chemischen Gesellschaft", Abt. B £6, 2280 These compounds are known in and of themselves or they can be produced by methods known in and of themselves, as described e.g. in "Berichte der Deutschen Chemischen Gesellschaft", Abt. B £6, 2280
(1923) og hg, 2927 (1909). (1923) and hg, 2927 (1909).
Således kan forbindelsene 1-9 fremstilles f.eks. ved omsetning av de tilsvarende hydrazinderivater med carbondisulfid i nærvær av kaliumhydroxyd hhv. triethylamin og ethanol hhv. dioxan. Thus, the compounds 1-9 can be prepared, e.g. by reacting the corresponding hydrazine derivatives with carbon disulphide in the presence of potassium hydroxide or triethylamine and ethanol respectively. dioxane.
Forbindelsene tilsettes elektrolytten fortrinnsvis i en mengde The compounds are preferably added to the electrolyte in one quantity
av 10 mg/liter til 1 g/liter. of 10 mg/litre to 1 g/litre.
Av andre tilsetningsstoffer kan nevnes: Other additives include:
Organiske glansgivende stoffer, som thiocarbonater, f.eks. natriumtrithiocarbonat eller ethylentrithiocarbonat, xanthogenater som kaliumxanthogenater, thiocarbamater som ammoniumthiocarbamat, eller organiske selenforbindelser som piazselenol. Organic gloss-giving substances, such as thiocarbonates, e.g. sodium trithiocarbonate or ethylene trithiocarbonate, xanthogenates such as potassium xanthogenates, thiocarbamates such as ammonium thiocarbamate, or organic selenium compounds such as piazselenol.
Foruten de organiske glansgivende stoffer kan elektrolytten også inneholde uorganiske glansgivende stoffer, f.eks., selenforbindelser som kaliumselenocyanat eller natriumselenitt, eller forbindelser av metallene fra 5. hovedgruppe i det periodiske system, som antimonforbindelser. Dessuten kan det til elektrolytten tilsettes fuktemidler og/eller kolloider. In addition to the organic brightening substances, the electrolyte can also contain inorganic brightening substances, for example, selenium compounds such as potassium selenocyanate or sodium selenite, or compounds of the metals from the 5th main group in the periodic table, such as antimony compounds. In addition, wetting agents and/or colloids can be added to the electrolyte.
Utfellingen av overtrekkene kan utfores ved en temperatur av ca. 10 - 35°C, fortrinnsvis ca. 20°C,og ved en strømtetthet av ca. 0,05-3 A/dm fortrinnsvis ca. 0,1 - 2 A/dm p. The deposition of the coatings can be carried out at a temperature of approx. 10 - 35°C, preferably approx. 20°C, and at a current density of approx. 0.05-3 A/dm preferably approx. 0.1 - 2 A/dm p.
Som elektrolytt anvendes i alminnelighet folgende sammensetning: 20 - 50 g/liter solv som cyanid, 50 - 200 g/liter fritt KNC og The following composition is generally used as an electrolyte: 20 - 50 g/liter solv as cyanide, 50 - 200 g/liter free KNC and
0 _ 100 g/liter K^CO^. 0 _ 100 g/liter K^CO^.
Eksempel 1 Example 1
Et vanlig solvbad med folgende sammensetning: A normal sun bath with the following composition:
35 g/liter solv som kaliumdicyanargentat 35 g/litre solv as potassium dicyanargentate
160 g/liter fritt kaliumcyanid og 160 g/litre free potassium cyanide and
30 mg/liter selen som kaliumselencyanat 30 mg/litre selenium as potassium selenium cyanate
ga ved det såkalte "Hull-celleforsok" skinnende utfellinger bare innen et stromtetthetsområde av ca. 1,6 - ca. h A/dm 2. Ved tilsetning til dette bad av 200 mg/liter av forbindelsen nr. 1 (kaliumsaltet av hydrazin-N-carboxylsyreamid-N'-dithiocarboxylsyren) ble diet nedre glansområde utvidet til en stromtetthet av under 0,1 A/dm . Forst ved tilsetning av den nevnte forbindelse eventuelt i nærvær av vanlige fuktemidler ble det i praksis nodvendige glansområde oppnådd. gave in the so-called "Hole cell experiment" shiny precipitates only within a current density range of approx. 1.6 - approx. h A/dm 2. By adding to this bath 200 mg/liter of compound No. 1 (the potassium salt of hydrazine-N-carboxylic acid amide-N'-dithiocarboxylic acid) the lower gloss region was extended to a current density of less than 0.1 A/ DM Only by adding the aforementioned compound, possibly in the presence of common wetting agents, was the required gloss area achieved in practice.
Eksempel 2 Example 2
Et vanlig mattsolvbad med folgende sammensetning: A normal mat sunbath with the following composition:
30 g/liter solv som natriumdicyanargentat og 30 g/litre solv as sodium dicyanargentate and
100 g/liter fritt natriumcyanid 100 g/litre free sodium cyanide
ga ved det såkalte "Hull-celleforsok" matte utfellinger innen alle vanlige stromtetthetsområder. Ved tilsetning av 20 mg/liter av'forr bindelsen nr. 5 (triethylammoniumsaltet av hydrazin-N-fenylthiocar-boxylsyreamid-N'-dithiocarboxylsyren) ble det innen et stromtetthetsområde av ca. 0,1 - ca. k A/dm oppnådd en feilfri solvutfelling med hoy glans. gave in the so-called "Hull cell experiment" matte precipitations within all normal current density ranges. With the addition of 20 mg/liter of the former bond no. 5 (the triethylammonium salt of hydrazine-N-phenylthiocarboxylic acid amide-N'-dithiocarboxylic acid) within a current density range of approx. 0.1 - approx. k A/dm achieved a flawless solar precipitation with a high gloss.
Dersom det imidlertid istedenfor forbindelsen nr. 5 tilsettes til badet den samme mengde 2,5-dimercaptothiodiazol-(1.3.<l>+), som er hovedproduktet ved omsetningen av kaliumdithiocarbazat med carbondisulfid ifolge tysk patentskrift nr. 959.775, fåes det ingen skinnende utfellinger innen det nevnte stromtetthetsområde. If, however, instead of compound no. 5, the same amount of 2,5-dimercaptothiodiazole-(1.3.<l>+), which is the main product of the reaction of potassium dithiocarbazate with carbon disulphide according to German patent document no. 959,775, is added to the bath, no shiny precipitates are obtained within the aforementioned current density range.
Eksempel 3 Example 3
Et vanlig solvbad med folgende sammensetning: A normal sunbath with the following composition:
35 g/liter solv som kaliumdicyanargentat 35 g/litre solv as potassium dicyanargentate
160 g/liter fritt kaliumcyanid og 160 g/litre free potassium cyanide and
30 mg/liter selen som kaliumselencyanat 30 mg/litre selenium as potassium selenium cyanate
ga ved det såkalte "Hull-celleforsok" skinnende utfellinger innen et stromtetthetsområde av ca. 1,6 - ca. h A/dm . Ved tilsetning til gave in the so-called "Hole cell experiment" shiny precipitates within a current density range of approx. 1.6 - approx. h A/dm . When added to
dette bad av 100 mg/liter av forbindelsen nr. 7 (natriumsaltet av hydrazin-N-guanyl-N'-dithiocarboxylsyren) ble glansområdet utvidet til en strømtetthet av under 0,1 A/dm . Forst ved tilsetning av den nevnte forbindelse eventuelt i nærvær av vanlige fuktemidler ble det i praksis nddvendige brede glansområde oppnådd. this bath of 100 mg/liter of compound No. 7 (the sodium salt of the hydrazine-N-guanyl-N'-dithiocarboxylic acid) the gloss region was extended to a current density below 0.1 A/dm . Only by adding the aforementioned compound, possibly in the presence of common wetting agents, was the necessary broad gloss area achieved in practice.
Eksempel h Example h
Et solvbad med folgende sammensetning: A sunbath with the following composition:
30 g/liter solv som kaliumdicyanargentat 30 g/litre solv as potassium dicyanargentate
125 g/liter fritt kaliumcyanid og 125 g/litre free potassium cyanide and
100 mg/liter kaliumsalt av thiosemicarbaziddithiocarboxylsyren 100 mg/litre potassium salt of the thiosemicarbaziddithiocarboxylic acid
ifolge fransk patentskrift nr. 1. K75.290 according to French patent document No. 1. K75,290
ga ved det såkalte "Hull-celleforsok" innen et stromtetthetsområd<p >av under ca. 1 A/dm 2 slorede utfellinger som var tydelig forstyrrende spesielt ved lakkering. Ved derimot istedenfor kaliumsaltet av thiosemicarbaziddithiocarboxylsyren å tilsette 100 mg/liter av forbin- gave in the so-called "Hull cell experiment" within a current density range<p>of less than approx. 1 A/dm 2 sloppy deposits which were clearly disturbing, especially during painting. By, on the other hand, instead of the potassium salt of the thiosemicarbazidithiocarboxylic acid, adding 100 mg/liter of the compound
delsen nr. 3 (kaliumsaltet av hydrazin-N-methylthiocarboxylsyreamid-N'-dithiocarboxylsyren) ble de slorede utfellinger forst dannet innen part no. 3 (the potassium salt of hydrazine-N-methylthiocarboxylic acid amide-N'-dithiocarboxylic acid), the slurred precipitates first formed within
2 00 2 00
et stromtetthetsområde av under 0,^4- A/dm . Det ble således oppnådd en vesentlig okning av glansdybdespredningen. a current density range of less than 0.^4- A/dm . A significant increase in gloss depth spread was thus achieved.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681771699 DE1771699C3 (en) | 1968-06-27 | Cyanide bath for the galvanic deposition of shiny silver coatings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO122048B true NO122048B (en) | 1971-05-10 |
Family
ID=5700952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO2658/69A NO122048B (en) | 1968-06-27 | 1969-06-26 |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3580821A (en) |
| JP (1) | JPS495818B1 (en) |
| AT (1) | AT286055B (en) |
| BE (1) | BE735288A (en) |
| CH (1) | CH525285A (en) |
| ES (1) | ES368263A1 (en) |
| FR (1) | FR2016105A1 (en) |
| GB (1) | GB1272839A (en) |
| NL (1) | NL6909961A (en) |
| NO (1) | NO122048B (en) |
| SE (1) | SE354676B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4155817A (en) * | 1978-08-11 | 1979-05-22 | American Chemical And Refining Company, Inc. | Low free cyanide high purity silver electroplating bath and method |
| US4399006A (en) * | 1978-08-29 | 1983-08-16 | Learonal, Inc. | Silver plating |
| FR2825721B1 (en) * | 2001-06-12 | 2003-10-03 | Engelhard Clal Sas | MIXTURE FOR USE AS A BRILLIANT IN A BATH OF ELECTROLYTIC DEPOSIT OF SILVER, GOLD OR ONE OF THEIR ALLOYS |
| JP4806808B2 (en) * | 2005-07-05 | 2011-11-02 | Ｄｏｗａメタルテック株式会社 | Composite plating material and method for producing the same |
| JP6230778B2 (en) * | 2012-05-31 | 2017-11-15 | 日亜化学工業株式会社 | Electrolytic silver plating solution for optical semiconductor devices |
| CN103320823B (en) * | 2013-06-18 | 2016-04-20 | 中山品高电子材料有限公司 | A kind of LED lead frame super brightness local electric plating solution and electroplating technology thereof |
| JP6395560B2 (en) * | 2013-11-08 | 2018-09-26 | Ｄｏｗａメタルテック株式会社 | Silver plating material and method for producing the same |
-
1969
- 1969-06-11 ES ES368263A patent/ES368263A1/en not_active Expired
- 1969-06-12 CH CH899169A patent/CH525285A/en not_active IP Right Cessation
- 1969-06-17 GB GB30590/69A patent/GB1272839A/en not_active Expired
- 1969-06-23 JP JP44049611A patent/JPS495818B1/ja active Pending
- 1969-06-24 SE SE08951/69A patent/SE354676B/xx unknown
- 1969-06-24 AT AT599669A patent/AT286055B/en not_active IP Right Cessation
- 1969-06-24 US US838040A patent/US3580821A/en not_active Expired - Lifetime
- 1969-06-26 NO NO2658/69A patent/NO122048B/no unknown
- 1969-06-26 FR FR6921468A patent/FR2016105A1/fr not_active Withdrawn
- 1969-06-27 NL NL6909961A patent/NL6909961A/xx unknown
- 1969-06-27 BE BE735288D patent/BE735288A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE1771699A1 (en) | 1972-01-13 |
| AT286055B (en) | 1970-11-25 |
| JPS495818B1 (en) | 1974-02-09 |
| ES368263A1 (en) | 1971-05-01 |
| SE354676B (en) | 1973-03-19 |
| US3580821A (en) | 1971-05-25 |
| CH525285A (en) | 1972-07-15 |
| DE1771699B2 (en) | 1976-10-07 |
| NL6909961A (en) | 1969-12-30 |
| GB1272839A (en) | 1972-05-03 |
| FR2016105A1 (en) | 1970-05-08 |
| BE735288A (en) | 1969-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3677909A (en) | Palladium-nickel alloy plating bath | |
| US2849351A (en) | Electroplating process | |
| US3023150A (en) | Bath for the production of metal electroplates | |
| US3905878A (en) | Electrolyte for and method of bright electroplating of tin-lead alloy | |
| US2882209A (en) | Electrodeposition of copper from an acid bath | |
| US4098656A (en) | Bright palladium electroplating baths | |
| TW200712266A (en) | Tin electrodeposits having properties or characteristics that minimize tin whisker growth | |
| US4473448A (en) | Electrodeposition of chromium | |
| JP6144258B2 (en) | NOCIAN GOLD PLATING BATH AND METHOD FOR PRODUCING NOCIAN GOLD PLATING BATH | |
| NO122048B (en) | ||
| US4184929A (en) | Trivalent chromium plating bath composition and process | |
| US4617096A (en) | Bath and process for the electrolytic deposition of gold-indium alloys | |
| NL8105601A (en) | COMPOSITIONS AND METHODS FOR ELECTROLYTIC DEPOSITION OF PALLADIUM AND PALLADIUM ALLOYS. | |
| US3956084A (en) | Electrodeposition of copper | |
| US3002903A (en) | Electrodeposition of nickel | |
| EP0085771B1 (en) | Electrodeposition of chromium and its alloys | |
| US3414493A (en) | Electrodeposition of copper | |
| US3990954A (en) | Sulfite gold plating bath and process | |
| US4048023A (en) | Electrodeposition of gold-palladium alloys | |
| US2986498A (en) | Process for the production of metal electrodeposits | |
| US3956079A (en) | Electrodeposition of copper | |
| US2429970A (en) | Silver plating | |
| US3630856A (en) | Electrodeposition of ruthenium | |
| US2839460A (en) | Electrolating | |
| US3480524A (en) | Selenium compound and its use as a brightener in a copper plating bath |