A red disperse dye mixture

Abstract

The invention relates to a red disperse dye mixture, which is prepared from the following ingredients: 3 to 40 weight percent of dye monomers A, 0 to 30 weight percent of dye monomers B, 1 to 30 weight percent of dye monomers C and the balance of auxiliary agents. The dye mixture has the advantages that the compatibility is high; during the dyeing, the application range of the pH value is wide; the dye yield is high; the levelling property is good; particularly, the advantages in the aspects of sublimation fastness, washing fastness and the like are obvious; the red disperse dye mixture is disperse dye with various excellent performance. The red disperse dye mixture is applicable to printing and dyeing of various kinds of high-grade polyester fiber and superfine fiber.

Description

technical field [0001] The invention relates to a red disperse dye, in particular to a red disperse dye mixture, which is suitable for printing and dyeing polyester fibers. Background technique [0002] With the gradual increase of environmental protection pressure in recent years, the wastewater discharge indicators of printing and dyeing factories have become increasingly strict. The conventional gray cloth dyeing process after pretreatment has been replaced by the one-bath dyeing process due to its large water consumption and high cost. . For printing and dyeing factories, the one-bath dyeing method saves energy consumption, shortens the process time, and reduces wastewater discharge. It is an environmentally friendly dyeing process that meets the national energy-saving and emission-reduction requirements. However, this process has higher requirements for dyes, and requires dyes to have a wider range of pH. In the printing and dyeing of existing polyester materials, disp...

AI Technical Summary

Problems solved by technology

However, this process has higher requirements for dyes, and requires dyes to have a wider range of pH. In the printing and dyeing of existing polyester materials, disperse red 5BL (C.I.Red 167) is cheap and widely used, but its dyeing pH is only 4 -7, unable to meet the dyeing process of one-bath scouring and dyeing

Some alkali-resistant disperse dyes currently on the market are either expensive, or cannot completely replace C.I. Disperse Red 167 in terms of color fastness, enhancement, and compatibility

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