Medium-temperature cobalt blue disperse dye

Abstract

The invention relates to a medium-temperature cobalt blue disperse dye, of which the general formula is shown in the specification, wherein R1 is H or methyl; R2 is C1-C4 alkyl; and R3 is Cl or methyl. The medium-temperature cobalt blue disperse dye provided by the invention can be used for dyeing and printing of polyester fibers and blended fabrics, is suitable for high-temperature high-pressuredyeing, is especially suitable for an energy-saving, discharge-reducing and medium-temperature thermosol dyeing process, and has good solarization performance and water washing fastness.

Description

technical field

[0001] The invention relates to a disperse dye, in particular to a medium-temperature brilliant blue disperse dye. Background technique

[0002] Disperse dyes are mainly used for dyeing and printing of polyester and its blended fabrics. The usual dyeing processes are high temperature and high pressure dyeing and hot melt dyeing. The high temperature and high pressure dyeing method usually dyes knitted fabrics, is intermittent dyeing, has small production capacity, and discharges a lot of waste liquid. The hot-melt dyeing method usually dyes woven fabrics, is continuous dyeing, has a large production capacity, and a small amount of wastewater discharge. Because of this advantage, the hot-melt dyeing method has shown a trend of substantial growth in recent years.

[0003] Disperse blue occupies the primary position among the three primary colors, among which C.I disperse blue 56 and C.I disperse blue 79 are widely used at home and abroad and enjoy a high rep...

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