GB910709A - - Google Patents
Info
- Publication number
- GB910709A GB910709A GB910709DA GB910709A GB 910709 A GB910709 A GB 910709A GB 910709D A GB910709D A GB 910709DA GB 910709 A GB910709 A GB 910709A
- Authority
- GB
- United Kingdom
- Prior art keywords
- moles
- coating
- alkali metal
- salt
- copper
- 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
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
- C23C18/31—Coating with metals
- C23C18/38—Coating with copper
- C23C18/40—Coating with copper using reducing agents
- C23C18/405—Formaldehyde
Abstract
910,709. Coating with metals. PHOTOCIRCUITS CORPORATION. Jan. 18, 1961 [May 3, 1960], No. 2033/61. Class 82 (2). A bath for the electroless deposition of copper on steel, ceramics or plastics comprises 0.002- 0.15 moles of a water soluble copper salt (e.g. CuSO 4 ), from 0.5-2.5 times this amount of a complexing agent (e.g. Rochelle salt or the sodium salts of E.D.T.A.), 0.06-3.4 moles of formaldehyde, 0.00002-0.06 mols. of an alkali metal cyanide and sufficient alkali metal hydroxide to give a pH of 10.5-14. When the solution is used for coating an insulating base the pretreatment comprises thorough cleaning sensitizing with SnCl 2 and seeding with PdCl 2 . Printed circuits may be made by this process.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB910709A true GB910709A (en) | 1900-01-01 |
Family
ID=1753384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB910709D Expired GB910709A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB910709A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1298826B (en) * | 1963-02-05 | 1969-07-03 | Siemens Ag | Acid bath solution containing palladium (ó�) ions for the germination of surfaces of metallic or non-metallic bodies preactivated with tin (ó�) chloride |
| DE1521441B1 (en) * | 1965-07-19 | 1970-04-30 | Photocircuits Corp | Process for producing metallically conductive surfaces in recesses in bodies, in particular electrical components |
-
0
- GB GB910709D patent/GB910709A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1298826B (en) * | 1963-02-05 | 1969-07-03 | Siemens Ag | Acid bath solution containing palladium (ó�) ions for the germination of surfaces of metallic or non-metallic bodies preactivated with tin (ó�) chloride |
| DE1521441B1 (en) * | 1965-07-19 | 1970-04-30 | Photocircuits Corp | Process for producing metallically conductive surfaces in recesses in bodies, in particular electrical components |
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