| 简介 |
PROBLEM TO BE SOLVED : To provide a novel method for producing a useful non-cyanogen gold compound that is available as a gold supply source for electroless and electrolytic plating liquids and contains no cyanogen.SOLUTION : The non-cyanogen gold compound represented by formula (2) can be produced in a good yield by adjusting an aqueous solution of a gold compound represented by formula (1) to a pH of 7.0 to 14.0 and keeping the temperature at 0 to 100°C; adding to the solution a solution dissolving 2-mercaptobenzothiazoles in an aqueous solution of one kind or two or more kinds selected from sodium hydroxide, potassium hydroxide and calcium hydroxide; and reacting them for 1 to 15 minutes. (1) (M is NH, Na or K; x>0, y>0, a>0, b>0, x+y+a+b-1>1.) (2) (Rto Rare H, a halogen atom, -(CH)CH/(n=0 to 6), -O-(CH)CH/(n=0 to 6) or -NO).SELECTED DRAWING : None |
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