Electrochemical reduction of vat dye using cathode with electroconductive, cathodically-polarized layer formed in situ by sedimentation on electroconductive substrate, is carried out in presence of base

摘要

In electrochemical reduction of a vat dye (I) by contacting (I) with a cathode comprising a substrate of electroconductive material and an electroconductive, cathodically-polarized layer formed in situ by sedimentation, electrochemical reduction is carried out in the presence of a base.