申请人:Schupp Olaf
公开号:US20060167236A1
公开(公告)日:2006-07-27
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 R
1
and R
2
are the same or different and represent hydrogen C
1
-C
4
-alkyl, C
1
-C
4
alkoxy, C
1
-C
5
-alkoxycarbonyl, nitro, cyano, halogen, phenoxy or trifluoromethyl; D
1
and D
2
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.
本发明涉及一种通过偶氮偶联法生产通式(I)二氮颜料或上述二氮颜料混合物的方法,其中 R
1
和 R
2
相同或不同,代表氢 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,且代表芳香杂环,可从苯并咪唑、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、邻苯二甲酰亚胺、苯并三唑、喹啉、苯并二氮杂环胺、苯吗啉、苯吗啉酮、苯并[c,d]吲哚酮、苯并咪唑并[1,2-a]嘧啶酮、咔唑和吲哚。本发明的特点在于,偶氮偶联产生的偶联产物在 pH 值为碱性的有机溶剂或 pH 值为中性或碱性的水性有机溶剂中进行精加工。