| 摘要 |
<p>A palladium salt is dissolved in hydrochloric acid and sufficient stannous salt added with agitation to reduce the salt to palladium metal. Sufficient stannous salt to provide a protective colloid for the palladium is separately dissolved in hydrochloric acid and the two solutions mixed. Preferred ingredients are palladium chloride, which is reduced with stannous chloride, while the protective agent is a mixture of sodium stannate and stannous chloride. The solution may be used in the production of printed circuit boards or of decorated plastics.</p> |
