Composition and method for applying metallic silver to a...

C - Chemistry – Metallurgy – 23 – C

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6/4, 117/79

C23C 3/02 (1980.01)

Patent

CA 1108021

Abstract of the Disclosure . High efficiency deposition of silver on the sur- face of a substrate is obtained by providing a solution con- taining reducible dissolved silver in the presence of an alkali metal hydroxide and ammonia, all of which are applied to the substrate in the presence of an aqueous solution of a moderating reducer containing a polyhydric alcohol of the formula CH2OH(CHOH)nCH2OH, where n is an integer from 1 to 6. Preferably the polyhydric alcohol is sorbitol, and in a pre- ferred embodiment a moderator is the form of a thio glycerol is present.

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