中性黑BGL(C.I.Acid Black 107)的合成

Synthesis of C. I. Acid Black 107

中性黑BGL(C.I.酸性黑107),既可用于羊毛、蚕丝、锦纶、维纶及其混纺的染色和印花,也可用于皮革制品的着色和染色.该产品的合成一般是以1-氨基-6-硝基-2-萘酚-4-磺酸钠盐及2-氨基-4-硝基苯酚和2-氨基-5-硝基苯酚等为原料,经重氮化、偶合、络合制备.

C.I. Acid Black 107 was synthesized by: (1) diazotization of the sodium salt of 1 - Amino - 6 - nitro - 2- naphthol - 4- sulfonic acid sodium salt, followed by coupling with 2 - naphthol ; (2)diazotization of 2 - amino - 4- nitrophenol and 2 - amino - 5- nitrophenol, followed by coupling with 2 - naphthol and 1 - ac-etamino - 7 - naphthol; And then metalization with Chrome(Ⅲ)salicylic acid sodium salt.The factors which influence the reactions were studied, the optimum overall yield is 93.6 % .