Dye composition, dye, preparation methods thereof and raw material composition of dye

Abstract

The invention discloses a dye composition which contains 10-70% of an ingredient represented by a formula I shown in a drawing and 30-90% of an ingredient represented by a formula II shown in a drawing. The invention further discloses a preparation method of the dye composition, wherein the method comprises the steps: (1) in a sulfuric-acid aqueous solution, carrying out diazotization reaction on mixed arylamine and a diazotization reagent at the reaction temperature of 15-35 DEG C; (2) enabling a product, obtained after the diazotization reaction, and N-ethyl-3-cyano-4-methyl-6-hydroxy-2-pyridone to be subjected to coupling reaction at the reaction temperature of -5 to 15 DEG C. The invention further discloses a raw material composition of a dye, wherein the raw material composition contains the dye composition, auxiliaries and a wetting agent. The invention further discloses a preparation method of the dye, wherein the method comprises the step of carrying out grinding and dispersing treatment on the raw material composition of the dye. The invention further discloses the dye prepared by the preparation method of the dye. During fabric dyeing, the dye disclosed by the invention is bright in color and light and good in dispersity and has excellent dyeing depth and dyeing fastness.

Description

[0001] This application is a divisional application of a patent application with an application date of December 20, 2011, an application number of 201110430201.1, and an invention title of "dye composition, dye, its preparation method, and the raw material composition of the dye". technical field

[0002] The invention relates to the field of azo dyes, in particular to a dye composition, a dye containing the same, a preparation method thereof and a raw material composition of the dye. Background technique

[0003] With the improvement of people's living standards and the enhancement of environmental protection awareness, more and more attention has been paid to high-performance environmentally friendly dyes. In addition to being environmentally friendly and not affecting human health, environmentally friendly dyes should also have excellent dyeing performance. In the printing and dyeing of polyester materials, bright yellow disperse dyes are widely used, whether they are si...

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