Acid dye mixture with good colourability

Abstract

The invention discloses an acid dye mixture with good colourability. The acid dye mixture has the following beneficial effects: as a natural auxiliary is added, the wet fastness of the acid dye after mixing is improved, the fiber handfeel can not be changed and the exhaustion of the dye is substantially improved; the wastewater generated after dyeing can be entirely degraded biologically; and the acid dye mixture is more suitable to dye nylons, silk, leathers, wool, paper, synthetic resins and other substances, simultaneously is quite suitable for various novel fibers and has uniform dyeing effect.

Description

technical field [0001] The invention belongs to the technical field of chemical printing and dyeing, in particular to acid dye compositions and mixtures. Background technique [0002] Acid dyes are dyes that are dyed in acidic medium. Most of the acid dyes contain sodium sulfonate, soluble in water, bright in color and complete in color spectrum. It is mainly used for dyeing wool, silk and nylon, and can also be used for leather, paper, ink, etc. Generally, it has no coloring power to cellulose fibers. Acid dyes are divided into strong acid, weak acid, acid medium, acid complex dye, etc. according to their chemical structure and dyeing conditions. [0003] The earliest developed acid dye requires dyeing in a strong acid dye bath. Its molecular structure is simple, its molecular weight is low, and it contains sulfonic acid or carboxyl groups. It has little affinity for wool, and it can move evenly on wool. It is evenly dyed, so it is also called acid level dyeing dye, but...

AI Technical Summary

Problems solved by technology

Usually, the level dyeing property of dyed nylon is poor, but the wet fastness is better; the level dyeing property of dyed silk is better, but the wet fastness is inferior to the dyeing fastness of wool