Preparation method of dyeing assistant

Abstract

The invention discloses a preparation method of a dyeing assistant. The preparation method comprises the following steps: (1), swelling 20-40 parts by weight of montmorillonite for 24 hours in distilled water under the room temperature to form montmorillonite suspension; (2), adding aqueous liquor containing 10-20 parts by weight of organic modifying assistant into the montmorillonite suspension; (3), heating up to 60 DEG C-70 DEG C, fiercely stirring and reacting for 3 hours-5 hours; (4), suction-filtering reaction liquor to obtain white precipitates, and washing by using distilled water until no halide ions exist; (5), vacuum-drying the product obtained in the step (4) for 20-30 hours at 60 DEG C-60 DEG C, sealing for storage after grinding and sieving to obtain the dyeing assistant. The dyeing assistant prepared by the preparation method in the invention can be used for improving the dye-uptake and color fastness of dye, improving the dyeing quality, increasing the dye dispersion, preventing dye from generating precipitates, improving the dye utilization rate, lowering the dyeing cost, lowering content of organic dye in printing and dyeing wastewater and reducing environmental pollution. Moreover, the preparation method of the assistant disclosed by the invention is simple in steps and extensive in material resource, and does not cause environmental pollution in a preparation process.

Description

technical field [0001] The invention relates to a preparation method of a dyeing auxiliary for textile printing and dyeing, in particular to a preparation method of a dyeing auxiliary which can improve dye uptake and color fastness through organic modification. Background technique [0002] Printing and dyeing is a key step in the manufacture of textiles, which can enhance the appearance of textiles and give them colorful effects. Dyeing auxiliaries have received widespread attention because they can improve the dyeing effect and ensure the dyeing quality in the printing and dyeing process. The existing dyeing auxiliaries are generally composed of organic matter, or a mixture of rare earth elements and organic matter. Using the existing dyeing auxiliaries for printing and dyeing, the dye uptake and color fastness are relatively low, and the dispersibility of the dye in the dye solution system is not strong. Due to the accumulation of electrostatic charges, dyes are prone to...

AI Technical Summary

Problems solved by technology

The existing dyeing auxiliaries are generally composed of organic matter, or a mixture of rare earth elements and organic matter. Using the existing dyeing auxiliaries for printing and dyeing, the dye uptake and color fastness are relatively low, and the dispersibility of the dye in the dye solution system is not strong. Due to the accumulation of electrostatic charge, dyes are prone to precipitation, the utilization rate of dyes is low, the cost of dyeing is high, and the content of organic dyes in printing and dyeing sewage is high, causing great environmental pollution.