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Preparation method of micro-nano vat dye suspension

A suspension, micro-nano technology, applied in dyeing, textiles and papermaking, etc., can solve the problems of difficult processing, poor stability, and long cycle, and achieve the effect of solving difficult processing, good stability, and short cycle

Pending Publication Date: 2021-10-08
SAINTYEAR HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention mainly solves the shortcomings of poor stability, low efficiency and long cycle in the prior art, and provides a preparation method of micro-nano vat dye suspension, which has the advantages of simple operation, good stability, high efficiency and short cycle features
Solved the problem of difficult processing

Method used

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  • Preparation method of micro-nano vat dye suspension
  • Preparation method of micro-nano vat dye suspension
  • Preparation method of micro-nano vat dye suspension

Examples

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Embodiment

[0033] Embodiment: As shown in the figure, a preparation method of a micro-nano vat dye suspension includes the following steps:

[0034] Step 1: add vat dye, caustic soda, hydrosulfite and water into chemical material tank 1 for pre-reduction process, and use stirring component 2 to reduce the vat dye to water-soluble leucochrome sodium salt. After the chemical tank 1 completes the pre-reduction process, clean water needs to be injected into the chemical tank 1 for cleaning, and the sewage is discharged through the sewage valve 20 connected to the sewage outlet 14 at the lower end of the chemical tank 1 .

[0035] The dye liquor in the chemical material tank 1 is stirred by the pre-reduction stirring rod 18 on the rotation shaft I17 driven by the pre-reduction stirring motor 16. The pre-reduction stirring rods 18 are distributed on the rotation shaft I17 in an equidistant spiral manner, and the rotation shaft I17 and the pre-reduction The reduction stirring motors 16 are conn...

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Abstract

The invention relates to a preparation method of micro-nano vat dye suspension, and belongs to the technical field of dye suspension manufacturing. The preparation method comprises the following operation steps that vat dye, caustic soda, sodium hydrosulfite and water are added into a chemical vat to carry out a pre-reduction process, so that the vat dye is reduced into water-soluble leuco body sodium salt; and the leuco body sodium salt is placed in a microbubble oxidation tank, a dispersion system is added at the same time, a microbubble oxidation stirring assembly is adopted to oxidize the leuco body sodium salt into water-insoluble dye particles, and therefore the micro-nano vat dye suspension is obtained. The liquid with the vat dye suspension in the microbubble oxidation tank is conveyed to a solid-liquid separation box through a liquid discharge pipe with a valve, so that the vat dye suspension is separated from the solution. Dye bath is carried out on the vat dye suspension and then the processed vat dye suspension is input into the dye vat, and a cotton cheese is dried by adopting a suspension dyeing method. The method has the characteristics of simple operation, good stability, high efficiency and short period, and the problem of high processing difficulty is solved.

Description

technical field [0001] The invention relates to the technical field of manufacturing dye suspensions, in particular to a preparation method of micro-nano vat dye suspensions. Background technique [0002] Vat dyes are still extremely important dyes in the dyeing of various textiles that require high dyeing quality. For example, work clothes with high washing fastness requirements, medical textiles that need to be sterilized, and military textiles that need infrared reflection are required to be dyed with vat dyes in many fields that require good chlorine bleaching fastness. [0003] The chemical structure of vat dyes does not contain water-soluble groups and less hydrophilic groups, so it is insoluble in water. It needs to be converted into soluble leucosome sodium salt under reducing agent and alkaline conditions, and then undergo Oxidation, return to insoluble dye lake and fix on the fiber. Contents of the invention [0004] The invention mainly solves the shortcomings...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/00D06P1/22D06P3/60
CPCD06P1/0016D06P1/22D06P1/221D06P1/222D06P3/6025
Inventor 方娜王炜吴良华
Owner SAINTYEAR HLDG GROUP
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