还原黑DB合成工艺研究

Vat Black DB Process Synthess

山以还原深蓝BO(紫蒽酮)为原料,浓硝酸为介质和硝化剂,合成了还原黑DB(硝化紫蒽酮),并对合成工艺进行了研究。合成条件为:反应温度为60±2℃,保温3 h,m(硝酸):m(除铜BO滤饼折干算):=4.2:1,在此条件下,目标产物收率达到90%,色光强度与标准样接近。此工艺条件简单,流程短,成本低,三废污染少,实现了清洁生产。

To restore the blue BO(purple anthrone) as raw materials, Concentrated nitric acid for the media and nitration agent, Synthesized Vat Black DB(Nitrification purple anthrone), And synthesis was studied. Synthesis conditions: The reaction temperature is 60±2 ℃, Keep the temperature 3h, m(Nitrate) :m(In addition to copper BO Fold dry cake count) =4.2:1, Under this condition, 90% yield of the desired product, Shade intensity close to the standard sample. This simple process conditions, Short process, Low Cost, Waste less pollution, Achieve cleaner production.