IT1159135B - Rapid etching soln. for printed circuit boards - contg. molybdenum cpd. and peroxide providing synergistic effect - Google Patents
Rapid etching soln. for printed circuit boards - contg. molybdenum cpd. and peroxide providing synergistic effectInfo
- Publication number
- IT1159135B IT1159135B IT2815178A IT2815178A IT1159135B IT 1159135 B IT1159135 B IT 1159135B IT 2815178 A IT2815178 A IT 2815178A IT 2815178 A IT2815178 A IT 2815178A IT 1159135 B IT1159135 B IT 1159135B
- Authority
- IT
- Italy
- Prior art keywords
- molybdenum
- contg
- printed circuit
- circuit boards
- soln
- Prior art date
Links
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title abstract 4
- 238000005530 etching Methods 0.000 title abstract 4
- 229910052750 molybdenum Inorganic materials 0.000 title abstract 4
- 239000011733 molybdenum Substances 0.000 title abstract 4
- 150000002978 peroxides Chemical class 0.000 title abstract 4
- 230000002195 synergetic effect Effects 0.000 title 1
- 239000002253 acid Substances 0.000 abstract 1
- 230000002459 sustained effect Effects 0.000 abstract 1
Landscapes
- ing And Chemical Polishing (AREA)
Abstract
The acid soln. comprises molybdenum together with sufficient peroxide to oxidise the molybdenum and provide sustained etching. The molybdenum content is sufficient to provide an etch rate greater than that achievable by peroside alone. Pref. the peroxide concn. is 0.5-2.5 moles/l and the Mo concn. 0.02-0.5 moles/l. H2O2 is pref. in an H2SO4-contg. soln. for etching Cu, or an HCl-contg. soln. for Ti. The soln. is used partic. for etching Cu in the prodn. of printed circuit boards. Mo is not consumed and replenishment only of peroxide is required.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/822,002 US4130454A (en) | 1976-01-05 | 1977-09-30 | Etchant and process of etching with the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7828151A0 IT7828151A0 (en) | 1978-09-27 |
| IT1159135B true IT1159135B (en) | 1987-02-25 |
Family
ID=25234839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT2815178A IT1159135B (en) | 1977-09-30 | 1978-09-27 | Rapid etching soln. for printed circuit boards - contg. molybdenum cpd. and peroxide providing synergistic effect |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1092009A (en) |
| IT (1) | IT1159135B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321908A (en) * | 2011-09-02 | 2012-01-18 | 广州市天承化工有限公司 | Recycling and regenerating process method and metal copper recovery system of acid chloride etching solution |
-
1977
- 1977-11-16 CA CA290,979A patent/CA1092009A/en not_active Expired
-
1978
- 1978-09-27 IT IT2815178A patent/IT1159135B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT7828151A0 (en) | 1978-09-27 |
| CA1092009A (en) | 1980-12-23 |
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