Solid precious metal sensitizing compositions

Abstract

Abstract SOLID COMPOSITIONS DILUTABLE TO OPTICALLY CLEAR SENSITIZING SOLUTIONS FOR RENDERING SURFACES RECEPTIVE TO THE DEPOSITION OF AN ADHERENT ELECTRODESS METAL COMPRISE A METAL COMPLEX CONSISTING OF (A) A PRECIOUS METAL SELECTED FROM A GROUP CONSISTING OF THE PRECIOUS METALS OF THE FIFTH AND SIXTH PERIODS OF GROUPS VIII AND I-B OF THE PERIODIC TABLE OF ELEMENTS, (B) A GROUP IV METAL OF THE PERIODIC TABLE OF ELEMENTS WHICH IS CAPABLE OF TWO VALENCE STATES AND (C) AN AMION CAPABLE OF FORMING A STABLE MOIETY WITH BOTH VALENCE STATES OF THE GROUP IV METAL, IN WHICH THE MOLAR RATIO OF (A) TO (B) TO (C) IS FROM ABOUT 1:1:3 TO 1:6:24. THE SOLUTIONS CAN BE PREPARED BY DILUTING THE SOLID COMPOSITIONS. CONTROLLED EXCESSES OF (B) AND (C) AND HYDROGEN ION AND WETTING AGENTS ENHANCE THE SOLUBILITY OF THE POWDERED PRODUCT AND STABILITY OF THE DILUTED SOLUTIONS. PROCESSES FOR RENDERING SURFACES RECEPTIVE TO THE DEPOSITION OF AN ELECTROLESS METAL. E.G., COPPER, NICKEL, COBALT, PALLADIUM, GOLD AND SILVER, ARE ALSO PROVIDED.

Inventors

• 👤 Rudolph J Zeblisky

Bibliographic Details