PROCESS FOR THE PREPARATION OF COPPER QUINOLINATE

摘要

A process for the preparation of copper quinolinate in which quinoline is oxidized by hydrogen peroxide in 10 to 30% sulfuric acid in the presence of copper sulfate at a temperature of 55 DEG to 75 DEG C., the molar ratio of sulfuric acid to quinoline being greater than 1:1. The concentration and amount of sulfuric acid enable greater control of the reaction temperature and result in copper quinolate in improved yield and purity. Copper quinolinate is used to prepare quinolinic acid which is the starting material for some chromogenic materials used in the pressure-sensitive record material field.