Double-temperature dyeing method of chloro-s-triazine and vinyl sulfone double-active group active dye

Abstract

The invention discloses a double temperature dyeing method for a reactive dye with double active groups of monochlorotriazine and vinyl sulfone. The formulas of the double temperature dyeing method are as follows respectively: 0.01 to 10 percent of M or B type reactive dye (the weight relative to that of fabrics or yarns), 10 to 100g/L of glauber salt or common salt, and 2 to 30g/L of calcined soda, wherein the bath ratio is between 1 to 6 and 1 to 15; or 0.01 to 10 percent of M or B type reactive dye, 10 to 100g/L of glauber salt or common salt, and 2 to 4g/L of base substituent 310-F, wherein the bath ratio is between 1 to 6 and 1 to 15; or 0.01 to 10 percent of M or B type reactive dye, 10 to 100g/L of glauber salt or common salt, 1 to 2g/L of base stabilizer 310, and 0.8 to 2g/L of sodium hudroxide, wherein the bath ratio is between 1 to 6 and 1 to 15. The dying process is as follows: cotton, hemp or an adhesive fabric, double temperature dyeing, soaping, and finishing. The utilization rate of the dye is improved by between 2 and 5 percent; the using amount of an alkaline agent can save 20 to 30 percent; and after the dyeing, the stage temperature is increased, the desorption rate of the hydrolised dye is increased, the loose color on fiber is reduced, and the water scrubbing is reduced after the soaping. The method reduces the drainage of sewage, and is favorable to the environmental protection.

Description

technical field [0001] The invention relates to a method for exhaust dyeing of reactive dyes, in particular to a method for dual-temperature dyeing of reactive dyes with dual active groups of monochloro-s-triazine and vinyl sulfone. Background technique [0002] Reactive dyes are a relatively new class of dyes, which have the advantages of bright color, excellent color fastness, and convenient dyeing. At present, it is widely used in the dyeing of cotton, hemp, silk, wool and other fibers. The molecular structure of reactive dyes contains active groups, and the dyes and fibers undergo chemical reactions to combine under alkaline and certain dyeing temperature conditions. However, the addition of alkali and the dyeing temperature have dual characteristics. If the alkali is too weak and the dyeing temperature is too low, the dye reaction will not be complete, which will affect the dyeing fixation rate of the dye; if the alkali is too strong and the dyeing temperature is too h...

AI Technical Summary

Problems solved by technology

However, the addition of alkali and the dyeing temperature have dual characteristics. If the alkali is too weak and the dyeing temperature is too low, the dye reaction will not be complete, which will affect the dyeing fixation rate of the dye; if the alkali is too strong and the dyeing temperature is too high, the dye will be hydrolyzed and become invalid, which will also affect the dye. dye fixation rate