发明名称 |
VERFAHREN ZUR BESCHICHTUNG MIT POLYIMID MITTELS ELEKTROABLAGERUNG |
摘要 |
A method of coating a copper substrate comprises the steps of: anodically microsmoothing the copper substrate in an acid bath to provide a substantially smooth surface; electrocoating the microsmoothed substrate with a pin hole free nickel film having a thickness of between about 2.5 microns to about 12.5 microns; single step, non-aqueous electrocoating the microsmoothed, nickel coated substrate with a pin hole free polyamic acid polymer, and curing the polyamic acid coating to form a polyimide film free of copper ion contamination. |
申请公布号 |
DE2647625(A1) |
申请公布日期 |
1977.04.28 |
申请号 |
DE19762647625 |
申请日期 |
1976.10.21 |
申请人 |
WESTINGHOUSE ELECTRIC CORP. |
发明人 |
R. GASS,WILLIAM;C. SCALA,LUCIANO;C. PHILLIPS,DAVID |
分类号 |
C09D5/44;C25D13/20;H05K3/02;(IPC1-7):C25D15/02 |
主分类号 |
C09D5/44 |
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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