GB955000A - Improvements in or relating to copper etching solutions - Google Patents
Improvements in or relating to copper etching solutionsInfo
- Publication number
- GB955000A GB955000A GB1332261A GB1332261A GB955000A GB 955000 A GB955000 A GB 955000A GB 1332261 A GB1332261 A GB 1332261A GB 1332261 A GB1332261 A GB 1332261A GB 955000 A GB955000 A GB 955000A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- etching solution
- relating
- valence
- copper etching
- 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)
Abstract
A copper etching solution whose etching action is based on the reaction MnXm+Cu-->Mn-xXm-x+CuXx, where X is an anion, M a metal of valence n in the fresh etching solution and n-x in the spent solution and m is an integer of valence, is regenerated by addition of an oxidizing agent, namely, sodium, potassium or ammonium dichromate, hypochlorite or permanganate, hydrogen peroxide, bleaching powder or ozone and hydrochloric or sulphuric acid. The etching solution may be a ferric or cupric salt, e.g. the chloride, solution and regeneration may be continuous.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1332261A GB955000A (en) | 1961-04-13 | 1961-04-13 | Improvements in or relating to copper etching solutions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1332261A GB955000A (en) | 1961-04-13 | 1961-04-13 | Improvements in or relating to copper etching solutions |
Publications (1)
Publication Number | Publication Date |
---|---|
GB955000A true GB955000A (en) | 1964-04-08 |
Family
ID=10020840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1332261A Expired GB955000A (en) | 1961-04-13 | 1961-04-13 | Improvements in or relating to copper etching solutions |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB955000A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3373113A (en) * | 1964-08-22 | 1968-03-12 | Fmc Corp | Process for etching copper printed circuits |
EP0178347A1 (en) * | 1984-10-19 | 1986-04-23 | Ibm Deutschland Gmbh | Process for automatically regenerating cupric chloride etching solutions |
EP0266518A1 (en) * | 1986-10-29 | 1988-05-11 | International Business Machines Corporation | Metal etching process with etch rate enhancement |
US5518131A (en) * | 1994-07-07 | 1996-05-21 | International Business Machines Corporation | Etching molydbenum with ferric sulfate and ferric ammonium sulfate |
-
1961
- 1961-04-13 GB GB1332261A patent/GB955000A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3373113A (en) * | 1964-08-22 | 1968-03-12 | Fmc Corp | Process for etching copper printed circuits |
EP0178347A1 (en) * | 1984-10-19 | 1986-04-23 | Ibm Deutschland Gmbh | Process for automatically regenerating cupric chloride etching solutions |
EP0266518A1 (en) * | 1986-10-29 | 1988-05-11 | International Business Machines Corporation | Metal etching process with etch rate enhancement |
US5518131A (en) * | 1994-07-07 | 1996-05-21 | International Business Machines Corporation | Etching molydbenum with ferric sulfate and ferric ammonium sulfate |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1035970A (en) | Process for dissolving metals | |
GB912956A (en) | Improvements in and relating to chemical nickel plating of magnesium and its alloys | |
GB1042420A (en) | Aluminium desmutting compositions | |
ES372831A1 (en) | Process and apparatus for etching copper and copper alloys | |
ES390246A1 (en) | Reduction of ferric ions in cyclic process of leaching and precipitation of copper | |
GB1095824A (en) | Process for recovering bromine from gaseous fluorobromo- or fluoro-chlorobromo-hydrocarbon mixtures containing hydrogen bromide | |
GB955000A (en) | Improvements in or relating to copper etching solutions | |
GB1100806A (en) | Process for converting monovalent thallium compounds to trivalent thallium compounds | |
GB917883A (en) | Improvements in and relating to dissolution | |
GB1434894A (en) | Aluminium etching | |
GB1508272A (en) | Periodate stabilised hypochlorites | |
GB1536774A (en) | Carboxylated pullulan and method for producing same | |
GB891094A (en) | Improvements in and relating to per-compounds | |
GB1480154A (en) | Rejuvenation of platinum catalysts | |
JPS5211178A (en) | Reaction selective activating cathode | |
GB674430A (en) | Improvements relating to the removal of ammonia from water | |
GB798236A (en) | Process for rendering wool unshrinkable and non-felting | |
GB926021A (en) | Improvements in and relating to the making of metal-to-vitric material seals | |
GB1174477A (en) | Method of Decontamination of Media Containing Fission Products. | |
GB738149A (en) | Treatment of titanium metal | |
GB1309086A (en) | Process for decolourising crude fluorosilicic acid and its salts | |
FR1587527A (en) | ||
GB1183006A (en) | Regeneration of Etchant. | |
GB860458A (en) | Concentration of plutonium | |
GB736386A (en) | Process for recovering iodine from iodine-containing aqueous glycol solutions |