发明公开
EP1057902A2 Improved process for synthesizing a palladium replenisher for electroplating baths
审中-公开
Verbeetes Verfahren zur Synthese eines钯再生器fürElektroplattierungsbäder
- 专利标题： Improved process for synthesizing a palladium replenisher for electroplating baths
- 专利标题（中）： Verbeetes Verfahren zur Synthese eines钯再生器fürElektroplattierungsbäder
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申请号： EP00304357.7申请日： 2000-05-23
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公开(公告)号： EP1057902A2公开(公告)日： 2000-12-06
- 发明人: Abys, Joseph Anthony , Dullaghan, Conor Anthony , Epstein, Peter , Maisano, joseph John Jr.
- 申请人： LUCENT TECHNOLOGIES INC.
- 申请人地址： 600 Mountain Avenue Murray Hill, New Jersey 07974-0636 US
- 专利权人： LUCENT TECHNOLOGIES INC.
- 当前专利权人： LUCENT TECHNOLOGIES INC.
- 当前专利权人地址： 600 Mountain Avenue Murray Hill, New Jersey 07974-0636 US
- 代理机构： Watts, Christopher Malcolm Kelway, Dr.
- 优先权： US323607 19990601
- 主分类号： C25D21/18
- IPC分类号： C25D21/18 ; C25D21/12 ; C01G55/00
摘要：
This invention provides for a palladium replenisher comprising a complex of palladium tetraammine sulfate made according to a process whereby the processing temperature is maintained at or below about 115°C in the presence of excess nitrate solution. The replenisher of the invention is used to replenish depleted palladium during palladium electroplating to maintain the palladium concentration in the bath within from about 5 to about 10 weight percent of recommended plating bath levels.
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