Production method of liquid sulfur red dye

Abstract

The invention provides a production method of liquid sulfur red dye, comprising: preparing the sulfur red dye and an aqueous solution; fusing the sulfur red dye and the aqueous solution, and adjusting the pH to form a mixed liquid; separating and filtering the mixed liquid, and concentrating the mixed liquid; Extract the concentrated mixed solution to make a finished product; compared with the prior art, the present invention has the following beneficial effects: the method is simple and reasonable, and glucose is used as a solvent during preparation, which can be directly used for dyeing without producing a large amount of Harmful waste gas, waste water, and printing and dyeing workplaces have less odor, low pollutant content in the residual liquid, easy to handle, reduce environmental pollution, and greatly reduce the difficulty of printing and dyeing wastewater treatment. The dyes are fully dissolved, the color is uniform, and it is easy to use.

Description

technical field [0001] The invention relates to a production method of liquid sulfur red dye, and belongs to the technical field of printing, dyeing and yarn-dyed production. Background technique [0002] Sulfur red is a dye used in printing, dyeing and yarn-dyed industries. Present sulfur red dye is dry powder usually, because sulfur red dry powder is insoluble in water, therefore needs to be solvent with sodium sulfide when using, when the liquid sulfur red dye of prior art is preparing, the consumption of sodium sulfide is sulfur red dye 1 to 2 times the weight, which will produce a large amount of sulfur-containing gas and waste water, which is difficult to treat. Contents of the invention [0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a method for producing liquid sulfur red dye to solve the problems raised in the above-mentioned background technology. [0004] In order to achieve the above object, the presen...

AI Technical Summary

Problems solved by technology

Present sulfur red dye is dry powder usually, because sulfur red dry powder is insoluble in water, therefore needs to be solvent with sodium sulfide when using, when the liquid sulfur red dye of prior art is preparing, the consumption of sodium sulfide is sulfur red dye 1~2 times the weight, which will produce a large amount of sulfur-containing gas and waste water, which is difficult to treat