Novel active printing dye for digital printing and preparation method of novel active printing dye

Abstract

The invention provides a novel active printing dye for digital printing and a preparation method of the novel active printing dye. The preparation method comprises the specific following steps: (1) mixing epoxy resin with aniline to obtain a mixture, heating, stirring, cooling, taking out the mixture, adding the mixture into a chloroform-methanol solution, and carrying out vacuum drying, so as to obtain an epoxy resin precursor; (2) completely dissolving ethylene sulfone sulfate into an alkaline water solution, adding sodium nitrate, uniformly mixing, dropwise adding the solution into an acetic acid solution, uniformly stirring, so as to obtain ethylene sulfone sulfate diazonium salt; (3) dissolving the epoxy resin precursor into a solvent, adding the mixture into an ice-water bath, slowly and dropwise adding ethylene sulfone sulfate diazonium salt, and stirring to react, so as to obtain a modified ethylene sulfone active dye; and (4) dissolving the modified ethylene sulfone active dye into water, blending the ethylene sulfone active dye into slurry, adding urea, secoisolariciresinol diglucoside and chitosan, adding sodium carboxymethyl starch and residual water, and adequately and uniformly stirring, so as to obtain the active printing dye for the digital printing.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and in particular relates to a reactive printing dye for digital printing and a preparation method thereof. Background technique [0002] Since the 1990s, digital printing technology has been widely used in the textile printing process. Chemical additives, printing nozzles, printing machines, fabrics and software programs cooperate with each other to form a complete textile printing solution. This scheme gets rid of the process of color separation and drawing, film making and net making in the production process of traditional printing, thus greatly shortening the production time, and the printing quality and efficiency of the obtained textiles far exceed the traditional printing. As the latest technology in the printing and dyeing industry, digital printing technology has been widely concerned and favored by the industry since its birth. [0003] The vast majority of digital printing ...

AI Technical Summary

Problems solved by technology

[0004] The dyes for digital printing must meet the following conditions: excellent water solubility, good color saturation, good light and washing fastness, and the requirements for water solubility and stability of dyes in digital printing are very high Yes, but most of the current dyes contain a considerable amount of sodium sulfate. Sodium sulfate has a strong surface potential shielding effect on the dissolved dye particles in the concentrated dye solution, making the dye particles easy to aggregate to form larger particles, which will cause the print head Clogging, etc., so commercially available dyes cannot be directly used as dyes for digital printing