Accelerant for textile dyeing, preparation method and applications thereof

Abstract

The invention discloses an accelerant for textile dyeing, which is prepared by the following raw materials by weight portions: 2-5 portions of rare earths (calculated by rare earth element), 10-20 portions of organic phenol halide, 1-10 portions of organic acid, 1-5 portions of modifier A and 1-5 portions of leveling agent B; the preparation method of the accelerant comprises the following steps of (1) preparing the rare earths into a chloride solution, heating the chloride solution and adding the organic acid into the chloride solution, keeping the temperature and obtaining an intermediate A; (2) mixing the organic phenol halide and the modifier A to obtain an intermediate B; and (3) adding the intermediate B into the intermediate A, keeping the temperature and adding the leveling agent B and water; mixing the solution and obtaining the accelerant; the accelerant can be used for cotton fiber active dyes, can greatly reduce the use of sodium sulfate in the dyeing process of the active dye, is beneficial for environmental protection and reduces the production cost of the dyeing enterprises.

Description

technical field [0001] The invention relates to the field of textile printing and dyeing, in particular to an environment-friendly dyeing accelerator for textile printing and dyeing. Background technique [0002] Cotton fiber occupies an important position in the textile industry, accounting for about 65% of the total fiber output. The most important and most potential dyes currently used in cotton fiber dyeing are reactive dyes. Reactive dyes are combined with cotton fibers through covalent bonds, fundamentally solving the problem of poor wet fastness of dyed fibers. At the same time, because reactive dyes have the advantages of complete chromatogram, bright color, simple application process, strong applicability, and relatively cheap price, they have become the dyes with the largest output and output value among dyes for cotton fibers in recent years. In the traditional reactive dyeing process, a large amount of sodium chloride or sodium sulfate must be added. When salt ...

AI Technical Summary

Problems solved by technology

People know through research that the salt effect of monocarboxylates is stronger than that of NaCl, and polycarboxylic acids are stronger than monocarboxylates. If they are used instead of table salt and Yuanming powder, the amount of salt can be greatly reduced, but the price of these so-called substitute salts is the same at present. Table salt and Yuanmingfen are too expensive compared with each other, so they cannot be promoted and applied

Images