A substitute for c.i. disperse red 167 dye with a smaller metamerism index

Abstract

The invention relates to the technical field of dye. C. I. disperse red 167 is poor in reproducibility, low in dye color developing rate, not good enough in deep dying property, serious in three-wastepollution in production, ordinary in washing fastness and poor in sublimation fastness; deep dying property and fastness of conventional C. I. disperse red 167 alternatives are improved to certain extent, but color light has great deviation with that of the C. I. disperse red 167, and metameric indexes of light sources A, TL84 and CWF are all large. In order to solve the problem, the invention provides a C. I. disperse red 167 dye alternative with small metameric index. The alternative is prepared from, by weight, 60-80 parts of dye A, 20-40 parts of dye B and 0.05-3 parts of dye C, and the metameric indexes of the light sources A, TL84 and CWF are all small (can be controlled below 0.5), so that the alternative can well replace C. I. disperse red 167; the deep dyeing property and the fastness of the conventional C. I. disperse red 167 alternatives are maintained, and cost is lowered.

Description

technical field [0001] The invention relates to the technical field of dyes, in particular to the preparation of a disperse red dye mixture. Background technique [0002] C.I. Disperse Red 167 (i.e. S-5BL) is a deep ternary dye of disperse dyes. It is widely used in polyester fibers. Most dyeing and finishing workers recognize this shade, but its reproducibility is poor, and the dyeing rate is low. The depth is not good enough, the three wastes in the production are polluted, the washing fastness is average, and the sublimation fastness is poor, so people have developed some disperse red mixtures to replace C.I. Disperse Red 167. For example, the patent CN1597790A adopts the combination of C.I. Disperse Red 145, C.I. Disperse Red 50 and C.I. Disperse Red 153. The main purpose is to solve the problem of low color development rate of C.I. Disperse Red 50 is a low-temperature dye, and the other two are medium-temperature dyes with poor compatibility, and the sublimation fastne...

AI Technical Summary

Problems solved by technology

[0002] C.I. Disperse Red 167 (i.e. S-5BL) is a deep ternary dye of disperse dyes. It is widely used in polyester fibers. Most dyeing and finishing workers recognize this shade, but its reproducibility is poor, and the dyeing rate is low. The depth is not good enough, the three wastes in production are polluted, the washing fastness is average, and the sublimation fastness is poor, so people have developed some disperse red mixtures to replace C.I. Disperse Red 167

For example, the patent CN1597790A adopts the combination of C.I. Disperse Red 145, C.I. Disperse Red 50 and C.I. Disperse Red 153. The main purpose is to solve the problem of low color development rate of C.I. Disperse Red 50 is a low-temperature dye, and the other two are medium-temperature dyes with poor compatibility, and the sublimation fastness of the low-temperature C.I. The main purpose of using the combination of C.I. Disperse Red 145, C.I. Disperse Red 153:1, C.I. Disperse Red 356 and Disperse Brown 19 is to improve the overall fastness, although the washing fastness and sublimation fastness of C.I. Disperse Red 153:1 in this combination disperse red 356 has low versatility, low yield during dye production, high cost, and serious environmental pollution. In addition, the color light of this combination is similar to that of C.I. disperse red 167 The difference is large. When D65 is used as the main light source, the metamerism index of A light source and CWF light source is relatively large, so it cannot be a good substitute for C.I. The main purpose of the combination is to provide an alkali-resistant disperse red dye to solve the problem of abnormal color development of C.I. Disperse Red 167 under alkaline conditions, but the color light of this combination is quite different from that of C.I. C.I. Disperse Red 153 has poor sublimation fastness and washing fastness, so it cannot be a good substitute for C.I. Disperse Red 167

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