Diethylene sulfone type reactive salt-free liquid dye, preparation method and application

Abstract

The present invention provides a diethylene sulfone type reactive salt-free liquid dye. The diethylene sulfone type reactive salt-free liquid dye is of a structure shown in a following formula (1), wherein the formula (1) is shown in the attached figure; Y is derived from the chromophore raw material, and the chromophore comprises one of aromatic hydrocarbons or heterocyclic aromatic hydrocarbons;R1 and R2 are respectively selected from one of hydrogen, C1 to C6 alkyl groups, hydroxyl groups and amino acid groups, C1 to C6 secondary amine groups, C1 to C6 tertiary amine groups, and C1 to C6 alkoxy groups, carbonyl groups, sulfonate groups or phosphate groups; M1 and M2 are respectively selected from one type of ion in organic amine, inorganic amine or alkaline metal, preferably ion in lithium, sodium, potassium or ammonia; the organic bonding groups T1 and T2 are respectively selected from one of benzene ring, naphthalene ring, anthracene ring, phenanthrene ring and pyrene ring or benzene ring, naphthalene ring, anthracene ring, phenanthrene ring and pyrene ring containing substituent groups. The diethylene sulfone type reactive salt-free liquid dye has the advantages that when the salt-free color paste is stored for one year at normal temperature, the dye or salt is not separated out; the pH (potential of hydrogen) value is stable; the dyeing property and filtering property can maintain good reproducibility.

Description

technical field [0001] The invention belongs to the field of vinylsulfone-based reactive dyes, in particular to a double vinylsulfone-type reactive salt-free liquid dye, a preparation method and an application. Background technique [0002] Compared with the reactive dyes of monoethylsulfone sulfate, reactive dyes containing polyethylsulfone sulfate have a higher coloring rate for natural cellulose fabrics, and are an important reactive dye, such as reactive black KN-B , reactive blue 250, reactive blue 203 and reactive red 278, etc. However, if they are stored in an aqueous solution for a long time, hydrolysis reactions will also occur. Moreover, compared with the reactive dyes of monoethylsulfone sulfate, the reactive dyes of polyethylsulfone sulfate are more hydrolyzed, the pH value of the system drops more, and the concentration of inorganic electrolytes produced by hydrolysis is often more, which leads to the use of these salt-free dyes. The textile ink configured wit...

AI Technical Summary

Problems solved by technology

However, this method cannot obtain a complete vinyl sulfone structure. Under optimized conditions, namely 32 ° C, pH = 11, hydrolysis for 1 hour, the proportion of double vinyl sulfone structure does not exceed 97%.

After ethylsulfate is converted into vinyl sulfone group, the water solubility of the dye will inevitably decrease. Although this problem can be improved by the exchange of dye ions, it has not been reported that it can accurately control the different ions in the human structure. ratio, so as to ensure the stability of product quality

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