Compound active red dye

Abstract

The invention provides a compound active red dye, which is characterized by being formed by compounding the following components in parts by weight: 56-68 parts of a dye represented by the structural formula (I), 13-18 parts of a dye represented by the structural formula (II) and 15-28 parts of a dye represented by the structural formula (III). The three components comprise chlorotriazinyl, and vinyl sulfone group double-activity group; the appetency, the dye-uptake and the fixation rate to fibers are more similar; the sensitive degrees to a bath ratio and a dyeing temperature of electrolyte salts and color fixing agent alkalis are more similar; the compound active red dye has the dyeing synchronism and leveling property, higher fixation rate and outstanding deep dyeing performance, and effectively overcomes the defects of an active red dye formed by compounding active red 3BS and active orange 82, so that the dyeing quality of a cellulose fiber material is ensured. The compound active red dye has the advantages of stable performance, high solubility, high fixation rate, good dyeing synchronism, good leveling property, good tone reproducibility, and particularly outstanding deep dyeing, and is applicable to printing the cellulose fiber material.

Description

technical field [0001] The invention relates to the field of dyes, in particular to a composite reactive red dye. Background technique [0002] With the continuous development of cellulose fiber varieties and the continuous development of dyeing technology, when using reactive dyes to dye cellulose fibers, higher and higher requirements are put forward for the application performance of reactive dyes. Due to the coloring of fiber materials by single-color dyes, the comprehensive value of various performance indicators is difficult to achieve satisfactory results. For example, dyes with a structure similar to reactive red 3BS are a kind of heterobiactive group (a chloro-s-triazine group and ethylene Sulfone-based) dyes, although it has high color fastness to dyed fabrics after coloring cellulose fiber materials, but its level dyeing and reproducibility are average, so the compound application of two or more dyes is better It has received more and more attention and attention...

AI Technical Summary

Problems solved by technology

[0006] The above two prominent contradictions directly lead to the asynchronous dyeing time when reactive red 3BS and reactive orange 82 are combined to dye cellulose fiber materials, resulting in poor shade reproducibility and high color flower rate

Images