Process for electroless plating a metal on non-conductive materi

Details Process for electroless plating a metal on non-conductive materi Process for electroless plating a metal on non-conductive materi

1992-08-24

1996-02-20

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Coating predominantly nonmetal substrate

106 111, 427304, 427305, C23C 1818, C23C 1831

Patent

active

054926130

ABSTRACT:
The present invention discloses a process for electroless plating a metal on the surface of almost all the common nonconductive material substrates by brushing or spraying composite chemical solutions onto said surface. When practicing the present invention, metal can be quickly deposited on the surface and firmly bound with the substrate. In addition, the composite chemical solutions used in the invention can be prepared from raw chemicals which are nontoxic and do not cause environmental pollution. Since the process does not require immersing or dipping, it allows metal to be deposited either on the entire surface or on a portion of a surface of the substrate without any restriction of the dimensions of the substrate. In one embodiment, the substrates may be glass, silicates or ceramics and may be sensitized using a solution which comprises about 25-175 g/l SnCl.sub.2, about 35-110 g/l of about 36% HCl, and about 50-100 g/l of about 95% ethanol. The sensitizing solution may also contain an indicator such as thymol blue.

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