Patent ID: 7022169
Filing Date: 2006-04-04
Classification: C23C

Abstract:
1. An electroless gold plating solution that contains no cyanide compound as a source of gold and that contains a decomposition inhibitor, represented by general formula (1), provided that, in a case in which the solution contains a gold complex of sulfite and the decomposition inhibitor is cytosine, the pH 6.0 or less is excluded, and in the formula, R 1 to R 4 denote hydrogen atom(s), alkyl groups having 1 to 10 carbon atom(s), which may have substituent(s), aryl group(s) having 6 to 10 carbon atoms, which may have substituent(s), alkoxy group(s) having 1 to 10 carbon atom(s), which may have substituent(s), amino group(s) (—NH 2 ), hydroxyl group(s) (—OH), ═O, or halogen atom(s), R 2 and R 3 or R 3 and R 4 may crosslink with each other and form a saturated or unsaturated ring and the saturated or unsaturated ring may include oxygen, sulfur or nitrogen atom(s), each of the above-mentioned substituents is a halogen atom or a cyano group, and is a single bond or a double bond.