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发明名称
Tin-lead immersion bath.
摘要
<p>Immersion tin-lead baths, preferably free of hypophosphite ion, comprising a strongly acidic aqueous solution comprised of thiourea, water-soluble sources of divalent tin and lead, a weak acid, and a weak base.</p>
申请公布号
EP0460787(A1)
申请公布日期
1991.12.11
申请号
EP19910300817
申请日期
1991.02.01
申请人
MACDERMID INCORPORATED
发明人
FERRIER, DONALD R.
分类号
C23C18/48;H05K3/34
主分类号
C23C18/48
代理机构
代理人
主权项
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