GB1426643A - Copper etching process - Google Patents
Copper etching processInfo
- Publication number
- GB1426643A GB1426643A GB638673A GB638673A GB1426643A GB 1426643 A GB1426643 A GB 1426643A GB 638673 A GB638673 A GB 638673A GB 638673 A GB638673 A GB 638673A GB 1426643 A GB1426643 A GB 1426643A
- Authority
- GB
- United Kingdom
- Prior art keywords
- copper
- chloride
- ions
- ammonium
- etchant
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/46—Regeneration of etching compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- ing And Chemical Polishing (AREA)
- Removal Of Specific Substances (AREA)
Abstract
1426643 Recovering copper values SHIPLEY CO Inc 9 Feb 1973 [9 Feb 1972] 6386/73 Heading C1A [Also in Division B6] An etchant comprising cupric ions, chloride or bromide ions, and a complexing agent capable of solubilizing the cupric ions is used to etch cupreous metal and is then treated to recover copper values therefrom and to replenish the chloride or bromide ions by adding sufficient ammonium chloride or ammonium bromide to precipitate a portion, but not all, of the copper in the form of a copper salt and removing the salt from the etchant. Ammonium ions may be present as an initial ingredient of the etchant. The cupric ions may be derived from copper sulphate, copper chloride, copper nitrate or copper acetate. The complexing agent may be mono- or di-ethanolamine or mono- or di-isopropanolamine. The ammonium ions may be derived from the carbonate, sulphate or chloride. The chloride or bromide ions may be derived from sodium or ammonium chloride or bromide. The used etchant may be aerated to convert cuprous copper to cupric form and cooled before the addition of the ammonium halide. The copper salt precipitate may be removed by centrifuging, filtering or by sedimentation. The treated etchant may be heated and re-used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22484972A | 1972-02-09 | 1972-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1426643A true GB1426643A (en) | 1976-03-03 |
Family
ID=22842494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB638673A Expired GB1426643A (en) | 1972-02-09 | 1973-02-09 | Copper etching process |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS4896429A (en) |
| CA (1) | CA989283A (en) |
| DE (1) | DE2306445A1 (en) |
| FR (1) | FR2171286B1 (en) |
| GB (1) | GB1426643A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561669A (en) * | 2022-03-03 | 2022-05-31 | 无锡中天固废处置有限公司 | Method for recycling acidic copper-containing ammonium-containing etching waste liquid |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3999564A (en) * | 1976-01-09 | 1976-12-28 | Pesek Engineering & Mfg. Co. | Continuous etching and etched material recovery system |
| CN111809184B (en) * | 2020-07-15 | 2022-03-04 | 深圳市祺鑫环保科技有限公司 | Method for recycling regenerated seed liquid |
| CN114369831B (en) * | 2021-12-27 | 2024-05-07 | 广东臻鼎环境科技有限公司 | Additive for recyclable nitric acid type tin stripping waste liquid and application thereof |
-
1973
- 1973-02-08 CA CA163,185A patent/CA989283A/en not_active Expired
- 1973-02-08 FR FR7304448A patent/FR2171286B1/fr not_active Expired
- 1973-02-09 GB GB638673A patent/GB1426643A/en not_active Expired
- 1973-02-09 JP JP1574173A patent/JPS4896429A/ja active Pending
- 1973-02-09 DE DE19732306445 patent/DE2306445A1/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114561669A (en) * | 2022-03-03 | 2022-05-31 | 无锡中天固废处置有限公司 | Method for recycling acidic copper-containing ammonium-containing etching waste liquid |
| WO2023165021A1 (en) * | 2022-03-03 | 2023-09-07 | 无锡中天固废处置有限公司 | Method for recycling acidic copper-containing and ammonium-containing waste etching solution |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2171286B1 (en) | 1976-11-05 |
| JPS4896429A (en) | 1973-12-10 |
| CA989283A (en) | 1976-05-18 |
| FR2171286A1 (en) | 1973-09-21 |
| DE2306445A1 (en) | 1973-08-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |