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    • 58. 发明申请
    • Method for producing disazo pigments
    • 双偶氮颜料的制备方法
    • US20060167236A1
    • 2006-07-27
    • US10519218
    • 2003-05-27
    • Olaf SchuppFelix GrimmManfred OpravilJoachim Weber
    • Olaf SchuppFelix GrimmManfred OpravilJoachim Weber
    • C07D403/02
    • C09B67/0015C09B33/153
    • The invention relates to a method for the production of disazo pigments of general formula (I) or a mixture of said disazo pigments by means of azocoupling, wherein R1 and R2 are the same or different and represent hydrogen C1-C4-alkyl, C1-C4 alkoxy, C1-C5-alkoxycarbonyl, nitro, cyano, halogen, phenoxy or trifluoromethyl; D1 and D2 are the same or different and represent an aromatic heterocycle from the group of benzimidazole, benzimidazolone, benzimidazolthione, benzoxazole, benzoxazolone, benzothiazolone, indazole, phthalimide, naphthalimide, benzotriazole, chinoline, benzodiazines, phenmorpholine, phenmorpholinone, benzo[c,d]indolone, benzimidazo[1,2-a]pyrimidone, carbazole and indole. The invention is characterised in that the coupling product resulting from the azocoupling is subjected to a finish in an organic solvent with an alkaline pH value or in an aqueous organic solvent with a neutral or alkaline pH value.
    • 本发明涉及通过偶氮偶联制备通式(I)的双偶氮颜料或所述双偶氮颜料的混合物的方法,其中R 1和R 2, 相同或不同,表示氢C 1 -C 4 - 烷基,C 1 -C 4烷氧基 C 1 -C 5 - 烷氧基羰基,硝基,氰基,卤素,苯氧基或三氟甲基; D 1和D 2相同或不同,代表苯并咪唑,苯并咪唑酮,苯并咪唑硫酮,苯并恶唑,苯并恶唑酮,苯并噻唑酮,吲唑,邻苯二甲酰亚胺,萘二甲酰亚胺 苯并三唑,苯并吗啉,酚吗啉酮,苯并[c,d]吲哚酮,苯并咪唑并[1,2-a]嘧啶酮,咔唑和吲哚。 本发明的特征在于,使偶氮偶合产生的偶联产物在碱性pH值的有机溶剂中或在具有中性或碱性pH值的有机溶剂的水溶液中进行精制。