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Little-water medium dyeing method for cellulosic fiber cheese

A cellulose fiber and dyeing method technology, which is applied in the field of cellulose fiber cheese dyeing in a water-less medium, can solve the problems of fast dyeing rate, reduced dosage, and difficulty in dissolving solid alkali agents, so as to reduce the difficulty of treatment and reduce emissions. amount of effect

Active Publication Date: 2019-05-07
LUTAI TEXTILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This dyeing method not only solves the problems of fast dyeing rate and difficulty in dissolving solid alkali agent during solvent dyeing, but also effectively reduces the amount of water, sodium sulfate and soda ash, and can realize rapid separation and recovery of the medium and water phase after dyeing , the final dyeing depth of the dyed yarn can reach a level comparable to that of conventional aqueous dyeing

Method used

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  • Little-water medium dyeing method for cellulosic fiber cheese

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The yarn count used for dyeing is 50s / 1 cotton yarn, the solvent medium used in the pre-treatment, dyeing and post-treatment process is ethyl benzoate, the dye used in dyeing is reactive blue NXGN dyeing, and reactive blue NXGN is monochloro-succinate Azine reactive dyes.

[0051] First, the cellulose fiber cheese with a quality of 1kg is pretreated. The pretreatment of the cellulose fiber cheese is carried out in a water-less medium. The specific consumption of each auxiliary agent is refining agent SQ-B2g / L, caustic soda 4g / L L, hydrogen peroxide 6g / L, the massfraction of water in the whole water-poor medium system is 15%, after pretreatment finishes, cellulose fiber cheese is squeezed water 2 times.

[0052]Carry out the dyeing of cheese after pretreatment finishes, and the amount of liquid of cheese is 100%, add a certain amount of solvent medium in dyeing machine at this moment, the mass ratio of solvent medium and cellulose fiber cheese is 5:1, add After the medi...

Embodiment 2

[0058] The yarn count used for dyeing is 200s / 2 cotton yarn, and the solvent medium selected in the pretreatment, dyeing and posttreatment process is anisole. The dyes selected during dyeing are reactive blue BRF, red R3BF, and yellow Y3RF, and the three dyes are all dual reactive dyes of monochloro-s-triazine+vinylsulfone.

[0059] First, the cellulose fiber cheese with a mass of 1kg is pretreated. The pretreatment of the cellulose fiber cheese is carried out in a medium with little water. The specific dosage of each auxiliary agent is refining agent SQ-B 3g / L, caustic soda 2g / L, hydrogen peroxide 2g / L, the mass fraction of water in the whole water-less medium system is 30%, after the pretreatment, the cellulose fiber cheese is squeezed once.

[0060] Carry out the dyeing of cheese after pretreatment finishes, and the amount of liquid of cheese is 120%, add a certain amount of solvent medium in dyeing machine now, the mass ratio of solvent medium and cellulose fiber cheese i...

Embodiment 3

[0066] The yarn count used for dyeing is 40s / 2 cotton yarn, the solvent medium used in the pre-treatment, dyeing and post-treatment process is methyl octanoate, and the dyes used in dyeing are reactive blue NXRBL, red RX6BN and yellow YX4RN, of which reactive blue NXRBL It is a trichloropyrimidine dye, and both red RX6BN and yellow YX4RN are monochloro-triazine dyes.

[0067] First, the cellulose fiber cheese with a mass of 1kg is pretreated. The pretreatment of the cellulose fiber cheese is carried out in a medium with little water. The specific dosage of each auxiliary agent is 5g / L of refining agent SQ-B and 6g of caustic soda. / L, hydrogen peroxide 10g / L, the mass fraction of water in the whole water-less medium system is 30%, after the pretreatment, the cellulose fiber cheese is squeezed for 2 times.

[0068] Carry out the dyeing of cheese after pretreatment finishes, and the amount of liquid of cheese is 90%, add a certain amount of solvent medium in dyeing machine at th...

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Abstract

The invention belongs to the technical field of spinning dyeing and finishing, and particularly relates to a little-water medium dyeing method for a cellulosic fiber cheese. By conducting the four processes of pretreatment, dyeing, after treatment and dyeing medium separation and recovery on the cheese, little-water medium dyeing is realized for the cellulosic fiber cheese. According to the dyeingmethod, under a dyeing condition of low salt and alkali and little water, dyeing is conducted, the usage amount of water, anhydrous sodium sulphate and sodium carbonate is reduced by 60-85% comparedwith common dyeing, and meanwhile the utilization rate of dye can be increased by 5-10%. By the adoption of the dyeing method, dyeing is conducted, all fastnesses of yarn can reach the third-fourth level, compared with common water bath dyeing, the dyed medium can be rapidly recovered and recycled, the recovery rate of the medium is up to 95%, and the problems that during traditional active dye water bath dyeing, the amount of consumed water and the quantity of discharged pollutants are high, and the content of salt in wastewater is high are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of textile dyeing and finishing, and in particular relates to a method for dyeing cellulose fiber package yarn with less water medium. Background technique [0002] Cheese dyeing is a dyeing method in which the dyeing liquid penetrates between the cheeses with the help of the main pump of the dyeing machine, and finally achieves dyeing. At present, more than 85% of high-grade yarn-dyed fabrics are produced through cheese dyeing, and cheese dyeing is an intermittent discrete production mode, which has many production processes, high labor intensity, high water consumption and energy consumption, and process formulation and execution are subject to human factors. Features such as large impact. Currently, reactive dyes are the main dyestuffs used for dyeing cellulose fiber cheese. In the conventional aqueous dyeing process of reactive dyes, a large amount of hydrolyzed dyes will be produced, and a large amoun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/66D06P1/38D06P1/673D06P5/02D06L4/00
Inventor 张凯张建祥刘淑云夏文静梁明钰徐红钟毅毛志平
Owner LUTAI TEXTILE
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