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Reducing agent and method for the electroless deposition of silver

  • US 4,737,188 A
  • Filed: 05/18/1987
  • Issued: 04/12/1988
  • Est. Priority Date: 05/18/1987
  • Status: Expired due to Term
First Claim
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1. In a method for the electroless deposition of metallic silver wherein a substrate is contacted with an aqueous alkaline medium containing a water soluble ionic silver composition capable of reduction to metallic silver and a reducer for said composition, the improvement which comprises providing as said reducer an effective amount of a compound represented by the general formula,


  • space="preserve" listing-type="equation">R.sup.2 --(CHR.sup.1).sub.n --CH.sub.2 OH
where n is two (2) to seven (7), R2 is represented by the formula COOH or CH2 R1, each R1 group is independently selected from the class consisting of OH, NH2, NHCH3, NHC2 H5 and NHC3 H7 and at least one of the R1 groups is NH2, NHCH3, NHC2 H5 or NHC3 H7.

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