Catalytic electroless gold plating baths

Details Catalytic electroless gold plating baths Catalytic electroless gold plating baths

1993-07-23

1994-08-16

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 126, C23C 1844

Patent

active

053383435

ABSTRACT:
An electroless catalytic gold plating solution is disclosed comprising a water soluble organic thiol gold (I) complex, an alkali metal cyanide, an alkali metal hydroxide, a borohydride reducing agent, and may also contain a stabilizing agent. The electroless gold plating solution will deposit gold on a gold surface several times faster than the conventional electroless gold baths based on potassium aurous cyanide. The use of an organic thiol gold (I) complex eliminates the buildup of inhibitory cyanide ions as a result of replenishment.

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