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Liquid disperse dye for high-temperature dip dyeing and preparation method thereof

A technology of liquid disperse dyes and disperse dyes, applied in the field of printing and dyeing, which can solve the problems that limit the wide application of liquid disperse dyes, and achieve the effects of preventing collision agglomeration, strong dispersibility, and uniform particle size distribution

Pending Publication Date: 2021-12-24
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This contradiction limits the wide application of liquid disperse dyes.

Method used

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  • Liquid disperse dye for high-temperature dip dyeing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1, the preparation of liquid disperse dyes for high temperature exhaust dyeing:

[0022] a) Take 9g of compound dispersant, 45g of disperse dye filter cake and 246g of water and mix them evenly in the dyeing cup, then add glass beads with a diameter of 2mm and use RW-20 digital display electric mixer to pre-grind for 30min, pre-grinding speed Be 900r / min, obtain pre-grinding dye, described compound dispersant is the mixed dispersant of anionic dispersant and nonionic dispersant, the mass ratio of anionic dispersant and nonionic dispersant in described compound dispersant is 6:4;

[0023] Among them, the filter cake of disperse dye is disperse blue 79 filter cake; ;

[0024] b) After adding zirconia beads with a diameter of 1mm into the pre-grinding dye prepared in step a), use a sander for secondary grinding for 2 hours, and the secondary grinding speed is 2800r / min to obtain a liquid disperse dye for high-temperature exhaust dyeing.

Embodiment 2

[0025] Embodiment two, the storage stability test of liquid disperse dye for high temperature exhaust dyeing:

[0026] The liquid disperse dye prepared in Example 1 is tested for storage stability, and the stability of the liquid disperse dye at room temperature and 60° C. is shown in Table 1 and Table 2:

[0027] Days at room temperature 0 7 14 21 28 Particle size (nm) 158.2 160.6 165.7 170.1 183.6 PDI 0.204 0.204 0.206 0.208 0.211

[0028] Table 1 Stability of liquid disperse dyes for high temperature exhaust dyeing at normal temperature

[0029] Storage days at 60°C 0 7 14 21 28 Particle size (nm) 158.2 165.6 174.2 185.4 200.7 PDI 0.204 0.207 0.209 0.213 0.214

[0030] Table 2 Stability of liquid disperse dyes for high temperature exhaust dyeing at 60°C

[0031] As shown in Table 1 and Table 2 above, the storage stability of liquid disperse dyes for high-temperature exhaust dyeing prepared by thi...

Embodiment 3

[0032] Embodiment 3, performance test comparison of liquid disperse dyes for high temperature exhaust dyeing and powder disperse dyes under high temperature and high pressure dyeing conditions:

[0033] At the same concentration, the liquid disperse dyes for high-temperature exhaust dyeing prepared in Example 1 and the commercially available powder disperse dyes were used to dye polyester fabrics under high temperature and high pressure respectively, and the dyeing properties between the two were compared. The results are shown in Table 3 below. Show:

[0034]

[0035] Table 3 Dyeing performance indicators of liquid disperse dyes and powder disperse dyes for high temperature exhaust dyeing

[0036] As shown in Table 3 above, the rubbing fastness of liquid disperse dyes for high-temperature exhaust dyeing can reach the rubbing fastness of powder disperse dyes, while the K / S and unevenness of liquid disperse dyes for high-temperature exhaust dyeing are obviously better than t...

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Abstract

The invention discloses a liquid disperse dye for high-temperature dip dyeing and a preparation method thereof. The liquid disperse dye for high-temperature dip dyeing comprises a compound dispersing agent, a disperse dye filter cake and water, wherein the compound dispersing agent accounts for 15-40% of the dry weight of the disperse dye filter cake, the compound dispersing agent is a mixed dispersing agent of an anionic dispersing agent and a nonionic dispersing agent, and the mass ratio of the anionic dispersing agent to the nonionic dispersing agent in the compound dispersing agent is (8-4):(2-6). According to the preparation method, the anionic dispersing agent and the nonionic dispersing agent are compounded and then are mixed and ground with the disperse dye filter cake and the water phase, so that the nanoscale liquid disperse dye can be prepared, and the liquid disperse dye is uniform in particle size distribution and has relatively high dispersity, diffusivity and stability; and particularly, the disperse dye can be applied to a high-temperature dip dyeing process of polyester fabrics, and various indexes such as color fastness, leveling property and residual liquid COD (Chemical Oxygen Demand) are superior to those of the existing powder disperse dye.

Description

【Technical field】 [0001] The invention relates to the technical field of printing and dyeing, in particular to the technical field of a liquid disperse dye for high-temperature exhaust dyeing and a preparation method thereof. 【Background technique】 [0002] Disperse dyes are a class of non-ionic dyes with small molecules, simple structures and low water solubility. Since polyester is the largest and most widely used synthetic fiber in the world, and disperse dyes are the main dyes for polyester fiber dyeing and printing, disperse dyes occupy a pivotal position in the dye market. [0003] At present, disperse dyes are mainly powder disperse dyes, which require a high content of auxiliaries. After dyeing or printing, a large amount of water needs to be used to remove the residual dyeing agent, which will easily cause a large amount of water resource consumption and pollution. It reduces the difficulty and cost of subsequent printing and dyeing wastewater treatment. In additi...

Claims

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Application Information

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IPC IPC(8): C09B67/40C09B67/46
CPCC09B67/0082C09B67/0086C09B67/0089C09B67/0091
Inventor 姜建堂吴明华
Owner ZHEJIANG SCI-TECH UNIV
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