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Cationic modified dyeing process for cellulose fiber

A cationic modification, cellulose fiber technology, applied in the field of textile dyeing, can solve the problems of not being suitable for large-scale production, high chroma of dyeing residue, difficult to treat wastewater, etc. Penetration effect

Inactive Publication Date: 2015-03-25
HMEI THREAD CO LTD OF YINBIN SICHUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The present invention aims to solve the following problems in the process of dyeing the cellulose fibers after modification in order to reduce the consumption of dyes, inorganic salts and alkali in the prior art: The degree of pollution is high, and the discharged wastewater is difficult to treat, causing pollution; and the existing salt-free and low-alkali modified dyeing process cannot be applied to large-scale industrial production

Method used

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  • Cationic modified dyeing process for cellulose fiber
  • Cationic modified dyeing process for cellulose fiber
  • Cationic modified dyeing process for cellulose fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Cellulose fiber dyeing process:

[0079] The cationic modification dyeing process of cellulose fiber comprises the following process steps:

[0080] A. Cellulose fiber modification treatment

[0081] Put the cellulose fiber into the container, add water to the container, and then modify the cellulose fiber with two cationic modifiers, the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier After the modification treatment is completed, modified cellulose fibers are obtained; the small molecular quaternary ammonium salt cationic modifier is an epoxy quaternary ammonium salt compound, and the high molecular quaternary ammonium salt cationic modifier is cationic starch;

[0082] B. Washing treatment

[0083] Washing the modified cellulose fibers obtained through the modification treatment in step A;

[0084] C. Dyeing

[0085] Putting the modified cellulose fibers washed with water in step B into a...

Embodiment 2

[0090] Cellulose fiber dyeing process:

[0091] The cationic modification dyeing process of cellulose fiber comprises the following process steps:

[0092] A. Cellulose fiber modification treatment

[0093] Put the cellulose fiber into the container, add water to the container, and then modify the cellulose fiber with two cationic modifiers, the small molecule quaternary ammonium salt cationic modifier and the high molecular quaternary ammonium salt cationic modifier After the modification treatment is completed, modified cellulose fibers are obtained; the small molecular quaternary ammonium salt cationic modifier is an epoxy quaternary ammonium salt compound, and the high molecular quaternary ammonium salt cationic modifier is cationic starch;

[0094] B. Washing treatment

[0095] Washing the modified cellulose fibers obtained through the modification treatment in step A;

[0096] C. Dyeing

[0097] Putting the modified cellulose fibers washed with water in step B into a d...

Embodiment 3

[0103] The small molecule quaternary ammonium salt cationic modifier of the present invention is an epoxy quaternary ammonium salt compound;

[0104] The polymer quaternary ammonium salt cationic modifier of the present invention is cationic starch.

[0105] Epoxy quaternary ammonium compound:

[0106]

[0107] Cationic starch modifier:

[0108]

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PUM

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Abstract

The invention relates to a cationic modified dyeing process for cellulose fiber, and belongs to the technical field of textile dyeing. The cationic modified dyeing process comprises the steps of cellulose fiber modified treatment, water washing treatment, dyeing and aftertreatment, wherein in the cellulose fiber modified treatment, an epoxy quaternary ammonium salt compound and cation starch are adopted to conduct modified treatment on the cellulose fiber. The two specific modifying agents are adopted and play the function of a synergistic effect, and specific dyeing steps are also adopted, so that salt-free low-alkaline dyeing of the cellulose fiber in dyeing is realized, the pollution as well as the cost is reduced, the process is simplified, the difficulty is reduced, the modified and dyeing effects are good, and industrialized mass production is facilitated.

Description

technical field [0001] The invention relates to a dyeing process of cellulose fibers, more specifically, the invention relates to a cationic modified dyeing process of cellulose fibers, which belongs to the technical field of textile dyeing. Background technique [0002] The dye uptake rate of traditional cellulose fiber dyeing process is generally around 40-70%. The dye uptake rate is low and there are many floating colors. In order to achieve the purpose of color fixation, the hydroxyl groups on the cellulose need to be ionized under strong alkaline conditions, so a large amount of soda ash must be added to the dyeing solution in the later stage of dyeing. The treatment of inorganic salts and alkalis has always been a problem that plagues the industry. A large amount of inorganic salts that are neither recyclable nor degradable are discharged into rivers and lakes, seriously polluting water quality. Due to the high permeability of salt, the surrounding soil is salinized an...

Claims

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Application Information

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IPC IPC(8): D06P1/66D06P1/48D06P3/60D06P5/22
Inventor 廖周荣段太刚贾卫平何大雄汤伟黄金洪张海刘志军
Owner HMEI THREAD CO LTD OF YINBIN SICHUAN
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