Abstract

Continuous-Flow Synthesis of Azo Dyes in Microreaction System

Jianhong Xu, , Tsinghua University

Azo dyes are a kind of synthetic dyes containing azo group (Ar-N=N-Ar), which accounts for more than 70% of all dye structure categories. In industry they are prepared by batch reactor under ice bath,which brings about the difference in color strength and color shade. And the yield is not high. In this talk, a new method for the continuous synthesis of azo dyes is developed by using microreaction system. The continuous-flow synthesis of azo dyes in a microreactor system has great potential in industrial applications.