申请人:CIBA SC HOLDING AG
公开号:WO2004013233A1
公开(公告)日:2004-02-12
Anionic monoazo dyes of the formula (1) in which A represents a 1- or 2-naphthyl residue, which is substituted by a total of one or two sulphonic and/or carboxylic acid groups, R1 represents hydrogen or C1-C4alkyl, each D1 and D2, independently of the other, represent either an amino acid residue resulting from removal of a hydrogen atom from the amino group of the amino acid or the residue -NR2R3, in which each R2 and R3, independently of the other, represent hydrogen, C1-C4alkyl, C2-C6alkyl which is substituted by hydroxy, halogen or cyano, phenyl which is unsubstituted or monosubstituted by hydroxy, halogen, SO3H, C1-C4alkyl or C1-C4alkoxy or alternatively, R2 and R3, together with the nitrogen atom to which they are connected, complete a saturated, 5- or 6-membered ring which may contain, in addition to the nitrogen atom, one nitrogen or oxygen atom and which may be further substituted and n is 0 or 1, a process for their preparation and the use of these dyes for dyeing natural or synthetic materials, in particular, paper.
公式(1)中的阴离子单偶氮染料,其中A代表1-或2-萘基残基,该残基被总共一个或两个磺酸和/或羧酸基取代,R1代表氢或C1-C4烷基,每个D1和D2独立地表示从氨基酸的氨基中除去氢原子得到的氨基酸残基或残基-NR2R3,其中每个R2和R3独立地表示氢,C1-C4烷基,C2-C6烷基,其被羟基,卤素或氰基取代,苯基未被取代或单取代羟基,卤素,SO3H,C1-C4烷基或C1-C4烷氧基,或者,R2和R3与它们连接的氮原子一起完成饱和的5-或6-成员环,该环除了氮原子外还可以包含一个氮原子或氧原子,并且可能被进一步取代,n为0或1,以及它们的制备过程和将这些染料用于染色天然或合成材料,特别是纸张的用途。