Preparation of solid precious metal sensitizing compositions

Details Preparation of solid precious metal sensitizing compositions Preparation of solid precious metal sensitizing compositions

C - Chemistry, Metallurgy

23

C

117/77, 252/84

C23C 18/28 (2006.01)

Patent

CA 1111407

Abstract of the Disclosure - Methods for the preparation of solid compositions soluble in aqueous media to produce clear sensitizing solutions for rendering surfaces receptive to the deposition of an adherent electroless metal comprise (1) precipitating a composition consisting of (a) a compound of an ion of a precious metal selected from a group consisting of the precious metals of the fifth and sixth periods of Groups VIII and IB of the Periodic Table of Elements, (b) a compound of a Group IV metal of the Periodic Table of Elements which is capable of two valence states and (c) a compound of an anion capable of forming a stable moiety with both valence states of the Group IV metal. Precipitation is from aqueous solution at an elevated pH or by cooling a hot saturated solution or melt. Alternately, the solid composition is formed by intimately blending the components in dry form. The compounds per se and methods for their use are also disclosed.

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