| 发明名称 |
OXIDATION OF COPPER IN A COPPER ETCHING SOLUTION BY THE USE OF OXYGEN AND/OR AIR AS AN OXIDIZING AGENT |
| 摘要 |
The present invention relates to a process of oxidizing copper in a copper etching solution by using oxygen gas and/or air as an oxidizing agent, the process comprising the steps of: a) introducing the oxidizing agent into an acidic reduced copper etching solution comprising Cl− and Cu+, b) stirring the solution obtained in step a), and thereby allowing the reaction 2Cu++½O2 (aq)+2H+→2Cu2++H2O to occur, thereby producing an oxidized copper etching solution comprising less Cu+ than the reduced copper etching solution. An advantage of the present invention is that it provides an improved process at least in terms of the speed of the oxidation and the quality of the etching. |
| 申请公布号 |
US2017022616(A1) |
申请公布日期 |
2017.01.26 |
| 申请号 |
US201515301181 |
申请日期 |
2015.04.01 |
| 申请人 |
SIGMA ENGINEERING AB |
发明人 |
ANDERSSON Mats |
| 分类号 |
C23F1/46;C23F1/08;H05K3/06;C23F1/18 |
主分类号 |
C23F1/46 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A process of oxidizing copper in a copper etching solution by using oxygen gas and/or air as an oxidizing agent, the process comprising the steps of:
a) introducing the oxidizing agent into an acidic reduced copper etching solution comprising Cl− and Cu+; b) stirring the solution obtained in step a); and thereby allowing the reaction 2Cu++½O2 (aq)+2H+→2Cu2++H2O to occur, thereby producing an oxidized copper etching solution comprising less Cu+ than the reduced copper etching solution. |
| 地址 |
Karlstad SE |
