发明名称 |
Composition for stripping solder and tin from printed circuit boards |
摘要 |
A composition and method for stripping tin and solder and the underlying tin-copper alloy from the copper substrate of a printed circuit board is presented. The liquid includes an aqueous solution of nitric acid in an amount sufficient to dissolve solder and tin, a source of ferric ions in an amount sufficient to dissolve the tin-copper alloy, and a source of halide ions in an amount sufficient to significantly improve the resistance between printed circuits.
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申请公布号 |
US6258294(B1) |
申请公布日期 |
2001.07.10 |
申请号 |
US19970940125 |
申请日期 |
1997.10.01 |
申请人 |
MORTON INTERNATIONAL, INC. |
发明人 |
JOHNSON, II TODD;FAKLER JOHN T. |
分类号 |
C23F1/30;C23F1/44;H05K3/06;(IPC1-7):C09K13/00 |
主分类号 |
C23F1/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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