Acid bath for galvanically depositing glossy gold and gold alloy layers contains gold and optionally one or more alloying elements in dissolved form as well as an organic compound as brightening agent

摘要

Acid bath contains gold and optionally one or more alloying elements in dissolved form as well as an organic compound as brightening agent. Acid bath contains gold and optionally one or more alloying elements in dissolved form as well as an organic compound as brightening agent. The brightening agent is a compound of the formula: R-SO mH; m : 3 or 4; R : up to 20C alkyl; and when m = 4, R = up to 10C aryl or heteroaryl which can be substituted by 1-14C alkyl.