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SODIUM PERMANGANATE ETCH BATHS CONTAINING A CO-ION FOR PERMANGANATE AND THEIR USE IN DESMEARING AND/OR ETCHING PRINTED CIRCUIT BOARDS
SODIUM PERMANGANATE ETCH BATHS CONTAINING A CO-ION FOR PERMANGANATE AND THEIR USE IN DESMEARING AND/OR ETCHING PRINTED CIRCUIT BOARDS
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机译：含高锰酸钾的高锰酸钾蚀刻剂及其在除尘和/或蚀刻印刷电路板中的用途
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ABSTRACT OF THE DISCLOSUREAqueous, alkaline liquid NaMnO4 solutions areprovided which provide excellent resin desmearing andetchback, especially in the manufacture of printedcircuit boards. The solutions comprise water, alkalimetal hydroxide, NaMnO4 and from about 0.1 to about 3.0moles per mole of MnO4- of a co-ion for MnO4- selectedfrom the group consisting of K+, Cs+, Rb+ and mixturesthereof.
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