Yan Yi
2011
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Dyestuffs and coloration
Abstract
C.I.Acid Yellow 23 was synthesized from p-aminobenzenesulfonic diazo salt and acetylsuccinic acid dimethyl ester by coupling reaction,decarboxylation,cyclization,second coupling reaction and hydrolyzation.The dye purity was 99%,the content was above 90%,the solubility in water was 200 g/L and the application performances were good."The three wastes" were reduced by nanofiltration membrane separation technology and the spray drying.