Novel precious metal sensitizing solutions

Abstract

Abstract OPTICALLY CLEAR SENSITIZING SOLUTIONS FOR RENDERING SURFACES RECEPTIVE TO THE DEPOSITION OF AN ADHERENT ELECTROLESS METAL COMPRISE WATER AND A METAL COMPLEX CONSISTING OF (A) A PRECIOUS METAL SELECTED FROM A GROUP CONSISTING OF THE PRECIOUS METALS OF THE FIFTH AND SIXTH PREROIDS OF GROUPS VII AND I-B OF THE PERIODIC TABLE OF ELEMENTS, (B) A GROUP VI METAL OF THE PERIODIC TABLE OF ELEMENTS WHICH IS CAPABLE OF TWO VALENCE STATES AND (C) AN ANION CAPABLE FO 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 DIRECTLY FROM THE COMPONENTS OR, PREFERABLY BY DILUTING A CONCENTRATE. THE SOLUTIONS CAN BE STABILIZED AGAINST PRECIOU METAL SEPARATION BY ADDING AN ORGANIC MONO-OL, DIOL OR POLYOL, A FLUORINATED HYDROCARBON WETTING AGENT OR HYDROGEN FLYORIDE. PROCESS FOR RENDERING SURFACES RECEPTIVE TO THE DEPOSITION OF AN ELECTROLESS METAL ARE ALSO PROVIDED IN WHIC THERE ARE EMPLOYED THE NEW SENSITIZING SOLUTIONS.

Inventors

• 👤 Rudolph J Zeblisky

Bibliographic Details