US3340073A - Regeneration of chemical plating baths - Google Patents
Regeneration of chemical plating baths Download PDFInfo
- Publication number
- US3340073A US3340073A US599344A US59934466A US3340073A US 3340073 A US3340073 A US 3340073A US 599344 A US599344 A US 599344A US 59934466 A US59934466 A US 59934466A US 3340073 A US3340073 A US 3340073A
- Authority
- US
- United States
- Prior art keywords
- bath
- chloride
- plating
- litre
- magnesium
- 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
- 238000007747 plating Methods 0.000 title claims description 59
- 239000000126 substance Substances 0.000 title claims description 15
- 230000008929 regeneration Effects 0.000 title claims description 9
- 238000011069 regeneration method Methods 0.000 title claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 29
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 18
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 18
- 150000001341 alkaline earth metal compounds Chemical class 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- -1 BORON HYDROGEN COMPOUND Chemical class 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 150000003839 salts Chemical class 0.000 claims description 11
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 10
- 229910052796 boron Inorganic materials 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 9
- 235000011147 magnesium chloride Nutrition 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 7
- 229910021529 ammonia Inorganic materials 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 5
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 5
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 claims description 4
- 229910001626 barium chloride Inorganic materials 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910001631 strontium chloride Inorganic materials 0.000 claims description 4
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 claims description 4
- 150000001642 boronic acid derivatives Chemical class 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 150000004679 hydroxides Chemical class 0.000 claims description 3
- XIADSFPMQPBJQG-UHFFFAOYSA-L calcium magnesium acetate chloride Chemical compound C(C)(=O)[O-].[Mg+2].[Cl-].[Ca+2] XIADSFPMQPBJQG-UHFFFAOYSA-L 0.000 claims description 2
- 150000004692 metal hydroxides Chemical class 0.000 claims description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- 229910052783 alkali metal Inorganic materials 0.000 description 9
- 239000002244 precipitate Substances 0.000 description 8
- 239000012266 salt solution Substances 0.000 description 8
- 238000007654 immersion Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 5
- 239000000706 filtrate Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 4
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical class B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 description 4
- 239000001110 calcium chloride Substances 0.000 description 4
- 229910001628 calcium chloride Inorganic materials 0.000 description 4
- 235000011148 calcium chloride Nutrition 0.000 description 4
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000012279 sodium borohydride Substances 0.000 description 3
- 229910000033 sodium borohydride Inorganic materials 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- MPMSMUBQXQALQI-UHFFFAOYSA-N cobalt phthalocyanine Chemical compound [Co+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 MPMSMUBQXQALQI-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 235000010299 hexamethylene tetramine Nutrition 0.000 description 2
- 239000004312 hexamethylene tetramine Substances 0.000 description 2
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- HWSZZLVAJGOAAY-UHFFFAOYSA-L lead(II) chloride Chemical compound Cl[Pb]Cl HWSZZLVAJGOAAY-UHFFFAOYSA-L 0.000 description 2
- UEGPKNKPLBYCNK-UHFFFAOYSA-L magnesium acetate Chemical compound [Mg+2].CC([O-])=O.CC([O-])=O UEGPKNKPLBYCNK-UHFFFAOYSA-L 0.000 description 2
- 239000011654 magnesium acetate Substances 0.000 description 2
- 235000011285 magnesium acetate Nutrition 0.000 description 2
- 229940069446 magnesium acetate Drugs 0.000 description 2
- 150000003891 oxalate salts Chemical class 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- UVZICZIVKIMRNE-UHFFFAOYSA-N thiodiacetic acid Chemical compound OC(=O)CSCC(O)=O UVZICZIVKIMRNE-UHFFFAOYSA-N 0.000 description 2
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 1
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- 229910000521 B alloy Inorganic materials 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910001514 alkali metal chloride Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001553 barium compounds Chemical class 0.000 description 1
- VQLYBLABXAHUDN-UHFFFAOYSA-N bis(4-fluorophenyl)-methyl-(1,2,4-triazol-1-ylmethyl)silane;methyl n-(1h-benzimidazol-2-yl)carbamate Chemical compound C1=CC=C2NC(NC(=O)OC)=NC2=C1.C=1C=C(F)C=CC=1[Si](C=1C=CC(F)=CC=1)(C)CN1C=NC=N1 VQLYBLABXAHUDN-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229940043430 calcium compound Drugs 0.000 description 1
- 150000001674 calcium compounds Chemical class 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- IRXRGVFLQOSHOH-UHFFFAOYSA-L dipotassium;oxalate Chemical compound [K+].[K+].[O-]C(=O)C([O-])=O IRXRGVFLQOSHOH-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000001119 stannous chloride Substances 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- HWCKGOZZJDHMNC-UHFFFAOYSA-M tetraethylammonium bromide Chemical compound [Br-].CC[N+](CC)(CC)CC HWCKGOZZJDHMNC-UHFFFAOYSA-M 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000000080 wetting agent Substances 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
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1617—Purification and regeneration of coating baths
Definitions
- Chemical plating baths which contain as a reducing agent boron hydrides with one to four hydrogen atoms linked directly to boron. These baths work at a satisfactory plating rate and reduction yield until about 75% of the nickel applied has been withdrawn from the bath by plating. The reduction yield and plating rate then decrease considerably whereupon a further use of the bath becomes uneconomical.
- the precipitates thus formed are difficult to filter, and metal residues still present in the plating bath, acting as decomposition catalysts, result in, on addition of boron hydrides with one to four hydrogen atoms directly linked to boron, the spontaneous decomposition 40 of the baths.
- the object of the invention is to provide a process for the regeneration of chemical plating baths, containing as a reducing agent boron hydrides with one to four hydrogen atoms directly linked to boron, characterised by reacting the used baths with water-soluble alkaline earth metal compounds, preferably with magnesium chloride, and filtering off the precipitates thereby formed. The filtrates are then treated once more with the salt of the plating metal and a complex former or reducing agent. The working up can be carried out with alkaline earth metal compounds in the solid state or in solution.
- Suitable water-soluble alkaline earth metal compounds according to the invention are, for example, magnesium chloride, magnesium sulphate, magnesium acetate, calcium chloride, strontium chloride, barium chloride.
- the working up of the used chemical plating baths working only at a slow plating rate and with a poor reduction yield, is carried out by stirring them with the water-soluble alkaline earth metal compounds and subsequent filtration.
- the excess of soluble alkaline earth metal compounds in the baths can be removed, if desired, by the addition of suitable precipitation agents.
- suitable precipitation agents for example, an excess of Ca+ is suitably precipitated with oxalates, an excess of Ba++ with sulphates.
- the working up of the chemical plating baths is effected continuously: during plating a supplementary metal salt solution and a solution of the reducing agent containing sodium hydroxide is continuously run into the plating bath in operation.
- concentrations of both solutions are adjusted in such a way that the composition of the plating bath remains unchanged.
- overflow a quantity of bath liquid corresponding to the increase in volume is removed from the plating bath, and this, after regeneration and adjustment to the concentration of the supplementary metal salt solution, is again fed back into the plating bath.
- the regeneration is carried out as follows: The overflow liquid is put into the circuit as an afterplating bath so that the residual reducing agent is used up. Subsequently a quantity of magnesium chloride is added which corresponds to the alkali metal and borate content of the solution; the mixture is filtered off from the precipitate, the residue is Washed with a little water, the filtrate is adjusted again to the concentration of the supplementary metal 'salt solution by the addition of metal salt and, if desired, of complex former.
- the interfering alkali metal salts are kept by the bath regeneration according to the invention at a concentration which does not influence the chemical plating process, it is possible to maintain the working capacity of a bath for a practically unlimited period of time.
- Example 1 1 litre of a chemical plating bath of the composition Nickel chloride (NiCl .6H O) g./litre 30 Ethylene diamine (96-98%) g./litre 62 Sodium hydroxide g./litre 42 Thiodiglycollic acid g/litre 1 Lead chloride mg./litre 10 Sodium boranate mg./litre 0.6
- the adjustment of the bath to the concentration of the supplementary metal salt solution can only be carried out by the addition of the nickel salt as a solid or in solution to the filtrate.
- the ethylene diamine content is equally adjusted to the initial concentration.
- Example 2 Foils of polyglycol-terephthalate were consecutively pretreated in the following baths:
- Nickel sulphate g./litre 20 Cobalt sulphate g./litre 20 Concentrated aqueous ammonia cc./litre N-dimethylborazane g./litre 1.5
- the temperature of the bath was 40 C., the period of immersion between 5 and 10 minutes.
- the bath was checked analytically and the initial concentration was re established every 5 hours. After about 20 hours running time the bath stopped plating.
- Regeneration was carried out by the addition of 50 g. of magnesium sulphate to the plating bath while stirring. Subsequently the precipitate formed was filtered off, the residue was washed with a little water and the filtrate was adjusted to the initial concentration of the plating bath by adding the metal salts, the complex former and the reducing agent.
- the bath now worked again without any disturbance.
- Silvery coatings were obtained on the polyglycol-terephthalate foils, with a resistance of between 0.4 and 0.6 ohm./ cm.
- Example 3 2 litres of a chemical plating bath of the following compositions:
- a process for regenerating a chemical plating bath containing as reducing agent a boron hydrogen compound having 1 to 4 hydrogen atoms linked directly with the boron atom, an alkali metal hydroxide or ammonia, a nickel and/or cobalt metal salt and a complex former selected from the group consisting of ammonia and organic complex forming agents the step which comprises adding to the exhausted plating bath at least one water soluble alkaline earth metal compound selected from the group consisting of magnesium chloride, magnesium sulfate, magnesium acetate, calcium chloride, strontium chloride and barium chloride, and removing from the bath the precipitated borates and hydroxides thereby formed.
- said alkaline earth metal compound is magnesium chloride.
- Process according to claim 1 which comprises removing the excess of soluble alkaline earth metal compound in said bath by the addition to the bath of a suitable precipitating agent whereby the cationic fraction of said compound is precipitated and can be removed.
- a process for the regeneration of a chemical plating bath containing as reducing agent a boron hydrogen compound having 1 to 4 hydrogen atoms linked directly to the boron atom, alkali metal hydroxide or ammonia, nickel and/ or cobalt metal salt and a complex former selected from the group consisting of ammonia and organic complex forming agents the steps which comprise adding to the exhausted plating bath at least one water soluble alkaline earth metal compound selected from the group consisting of magnesium chloride, magnesium sulfate, magnesium acetate calcium chloride, strontium chloride and barium chloride, removing the precipitated borates and hydroxides thereby formed and adding to the bath liquid at least that amount of the bath components required to re-establish the initial content thereof in said bath.
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemically Coating (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF34032A DE1242970B (de) | 1961-05-27 | 1961-05-27 | Verfahren zum Regenerieren eines erschoepften Bades zur chemischen Abscheidung einesborhaltigen Metallueberzugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3340073A true US3340073A (en) | 1967-09-05 |
Family
ID=7095377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US599344A Expired - Lifetime US3340073A (en) | 1961-05-27 | 1966-12-02 | Regeneration of chemical plating baths |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3340073A (fr) |
| BE (1) | BE618098A (fr) |
| CH (1) | CH414301A (fr) |
| DE (1) | DE1242970B (fr) |
| GB (1) | GB932903A (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4038085A (en) * | 1976-03-03 | 1977-07-26 | Chromium Industries, Inc. | Method of treating electroless nickel plating bath |
| US5269838A (en) * | 1992-04-20 | 1993-12-14 | Dipsol Chemicals Co., Ltd. | Electroless plating solution and plating method with it |
| US5576053A (en) * | 1993-05-11 | 1996-11-19 | Murata Manufacturing Co., Ltd. | Method for forming an electrode on an electronic part |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1237399B (de) * | 1963-07-22 | 1967-03-23 | Bayer Ag | Verfahren zum kontinuierlichen, chemischen Abscheiden borhaltiger Nickel- und Kobalt-ueberzuege |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2434191A (en) * | 1942-02-02 | 1948-01-06 | Du Pont | Removing organic impurities from copper-cyanide electroplating baths |
| US2886451A (en) * | 1958-01-17 | 1959-05-12 | Gen Am Transport | Processes of regenerating chemical nickel plating solutions |
| GB836480A (en) * | 1957-01-15 | 1960-06-01 | Du Pont | Improvements in or relating to alloy plate |
| CA654202A (en) * | 1962-12-18 | Budininkas Pranas | Recovery of depleted chemical nickel plating baths |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1219249A (fr) * | 1958-01-17 | 1960-05-16 | Gen Am Transport | Perfectionnements aux procédés de nickelage chimique |
-
1961
- 1961-05-27 DE DEF34032A patent/DE1242970B/de active Pending
-
1962
- 1962-05-14 CH CH578962A patent/CH414301A/de unknown
- 1962-05-25 GB GB20226/62A patent/GB932903A/en not_active Expired
- 1962-05-25 BE BE618098A patent/BE618098A/fr unknown
-
1966
- 1966-12-02 US US599344A patent/US3340073A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA654202A (en) * | 1962-12-18 | Budininkas Pranas | Recovery of depleted chemical nickel plating baths | |
| US2434191A (en) * | 1942-02-02 | 1948-01-06 | Du Pont | Removing organic impurities from copper-cyanide electroplating baths |
| GB836480A (en) * | 1957-01-15 | 1960-06-01 | Du Pont | Improvements in or relating to alloy plate |
| US2886451A (en) * | 1958-01-17 | 1959-05-12 | Gen Am Transport | Processes of regenerating chemical nickel plating solutions |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4038085A (en) * | 1976-03-03 | 1977-07-26 | Chromium Industries, Inc. | Method of treating electroless nickel plating bath |
| US5269838A (en) * | 1992-04-20 | 1993-12-14 | Dipsol Chemicals Co., Ltd. | Electroless plating solution and plating method with it |
| US5576053A (en) * | 1993-05-11 | 1996-11-19 | Murata Manufacturing Co., Ltd. | Method for forming an electrode on an electronic part |
Also Published As
| Publication number | Publication date |
|---|---|
| CH414301A (de) | 1966-05-31 |
| BE618098A (fr) | 1962-09-17 |
| GB932903A (en) | 1963-07-31 |
| DE1242970B (de) | 1967-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3338726A (en) | Chemical reduction plating process and bath | |
| JP3455709B2 (ja) | めっき方法とそれに用いるめっき液前駆体 | |
| US3234031A (en) | Reduction nickel plating with boron reducing agents and organic divalent sulfur stabilizers | |
| US3295999A (en) | Process of chemical metal plating and baths therefor | |
| TWI658122B (zh) | 用於金屬化非導電塑膠表面之組合物及方法 | |
| US2532284A (en) | Cobalt plating by chemical reduction | |
| JP2703487B2 (ja) | 水酸化ニッケルの製造方法 | |
| US3340073A (en) | Regeneration of chemical plating baths | |
| US4035227A (en) | Method for treating plastic substrates prior to plating | |
| US2819187A (en) | Chemical nickel plating processes and baths therefor | |
| US4372830A (en) | Recovery of gold in gold plating processes | |
| EP2116550B1 (fr) | Procédé de fabrication de complexes de carbonate de palladium (hydrogène) avec des ligands amines | |
| US4151311A (en) | Post colloid addition of catalytic promoters to non noble metal principal catalytic compounds in electroless plating catalysts | |
| Brenner et al. | Nickel plating on steel by chemical reduction | |
| ES8300883A1 (es) | Procedimiento para separar electroliticamente depositos metalicos. | |
| US3935005A (en) | Composition and method for stripping gold and silver | |
| US3063850A (en) | Metal plating by chemical reduction with amine boranes | |
| CA1093911A (fr) | Procede de cuivrage non electrolytique | |
| US3373054A (en) | Chemical plating | |
| Gylienė et al. | The use of organic acids as precipitants for metal recovery from galvanic solutions | |
| US4844739A (en) | Hydrazine bath for chemically depositing nickel and/or cobalt, and a method of preparing such a bath | |
| US2796343A (en) | Process for the hydrometallurgical precipitation of nickel and cobalt | |
| US2871142A (en) | Chemical nickel and cobalt plating process | |
| DE2750932B2 (de) | Cyanidfreies Bad zur stromlosen Goldabscheidung und seine Verwendung | |
| JP3468650B2 (ja) | 無電解ニッケルめっき方法 |