| 摘要 |
<p>1375578 Modified halides IMASA SA 26 Oct 1971 [27 Oct 1970] 49694/71 Heading C1A [Also in Division C7] An activating solution for use in electroless plating comprises a Lewis base-modified noble metal-tin halide, e.g. chloride or bromide, complex and a hydrogen halide acid, the solution being free of colloidal metal particles. The noble metal may be Pd, Pt, Rh, Ru, Os, Ir, Au and Ag, and the Lewis base a C 1-3 alkanol, e.g. methanol, n- or iso-propanol or ethanol or an alkanol alkali metal propionate mixture. The solution is made by heating the mixture to 32‹ to 54‹ C. and holding for a plurality of days. The stannous halide is preferably added to the reaction mixture in a series of increments.</p> |
