Aqueous noble metal suspensions for one stage activation of nonc

Details Aqueous noble metal suspensions for one stage activation of nonc Aqueous noble metal suspensions for one stage activation of nonc

1975-02-10

1977-01-18

Kendall, Ralph S.

Coating processes

With pretreatment of the base

Preapplied reactant or reaction promoter or hardener

427305, 427306, 106 1, 106287R, C23C 302

Patent

active

040040518

ABSTRACT:
An aqueous noble metal suspension capable of one stage activation of the surface of a nonconductor for electroless plating is provided by reducing a noble metal ion in an aqueous solution of a noble metal salt with a non-complexing reducing agent for the noble metal ion in the presence of a water soluble organic suspending agent.
The particulate noble metal is rapidly absorbed by a nonconducting surface over a broad range of operating temperatures when the suspension is maintained at a pH below 3.5.

REFERENCES:
patent: 3011920 (1961-12-01), Shipley
patent: 3438440 (1969-04-01), Richardson
patent: 3500927 (1970-03-01), Simpson
patent: 3627558 (1971-12-01), Roger et al.
patent: 3682671 (1972-08-01), Zeblisky
patent: 3698939 (1972-10-01), Leaman

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