发明名称 |
Method of stripping silver from a printed circuit board |
摘要 |
A method of stripping silver from a printed circuit board without attacking the underlying base metal. The stripping solution comprises an oxidizing agent, an alkaline pH adjuster, and a silver solubilizing agent. After the silver has been sufficiently removed from the surface of the printed circuit board, the printed circuit board is contacted with a neutralization solution to remove any smut remaining on the surface. The silver stripping solution does not contain cyanide or chromium and does not require the use of anodic current.
|
申请公布号 |
US6783690(B2) |
申请公布日期 |
2004.08.31 |
申请号 |
US20020106522 |
申请日期 |
2002.03.25 |
申请人 |
KOLOGE DONNA M.;LETIZE RAYMOND A.;LARSON BRIAN |
发明人 |
KOLOGE DONNA M.;LETIZE RAYMOND A.;LARSON BRIAN |
分类号 |
C23F1/00;C23F1/40;C23F1/44;H05K3/06;H05K3/20;H05K3/26;(IPC1-7):C23F1/00;C09K13/00 |
主分类号 |
C23F1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|