Patent ID: 7166152
Filing Date: 2007-01-23
Classification: C23C

Abstract:
1. A pretreatment solution for providing a catalyst for electroless plating, comprising a silver colloidal solution containing, as essential components, at least the following components (I), (II) and (III): (I) silver colloidal particles, (II) one or more ions selected from the group consisting of an ion of a metal having an electric potential which can reduce a silver ion to metal silver in the solution and an ion oxidized at the time of reduction of the silver ion, and (III) one or more ions selected from the group consisting of a hydroxycarboxylate ion, a condensed phosphate ion and an amine carboxylate ion, the silver colloidal particles (I) being produced by the ion of the metal (II) having an electric potential which can reduce a silver ion to metal silver, wherein the silver colloid solution further contains one or more metal ions selected from the group consisting of ions of iron, cobalt, nickel, and zinc, or ions of cobalt, nickel, and zinc when the metal (II) is iron.