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Salt-free low-alkali cellulose fiber dyeing method

A technology of cellulose fiber and dyeing method, which is applied in dyeing method, textiles and papermaking, etc., can solve the problems of large amount of alkali consumption, difficult treatment of wastewater, high chroma of dyeing residue, and achieve uniform modification, sufficient modification, and dyeing uniform effect

Pending Publication Date: 2015-04-01
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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  • Salt-free low-alkali cellulose fiber dyeing method
  • Salt-free low-alkali cellulose fiber dyeing method
  • Salt-free low-alkali cellulose fiber dyeing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Cellulose fiber dyeing process:

[0079] The salt-free and low-alkali dyeing method of cellulose fibers 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 , modified cellulose fibers are obtained after the modification treatment is completed; the small molecular quaternary ammonium salt cationic modifier is 3-acrylamide-2-hydroxypropyl trimethyl ammonium chloride, and the high molecular quaternary ammonium The salt cationic modifier is a cationic polyacrylamide compound;

[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...

Embodiment 2

[0090] Cellulose fiber dyeing process:

[0091] The salt-free and low-alkali dyeing method of cellulose fibers 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 , modified cellulose fibers are obtained after the modification treatment is completed; the small molecular quaternary ammonium salt cationic modifier is 3-acrylamide-2-hydroxypropyl trimethyl ammonium chloride, and the high molecular quaternary ammonium The salt cationic modifier is a cationic polyacrylamide compound;

[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...

Embodiment 3

[0103] The small molecule quaternary ammonium salt cationic modifier of the present invention is 3-acrylamide-2-hydroxypropyl trimethyl ammonium chloride;

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

[0105] 3-acrylamide-2-hydroxypropyltrimethylammonium chloride:

[0106]

[0107] Cationic polyacrylamide compounds:

[0108]

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Abstract

The invention relates to a salt-free low-alkali cellulose fiber dyeing method, belonging to the technical field of textile dyeing. The dyeing method comprises the steps of cellulose fiber modification treatment, water washing treatment, dyeing and after-treatment, wherein in the step of cellulose fiber modification treatment, 3-acrylamide-2-hydroxypropyl trimethyl ammonium chloride and cationic polyacrylamide compounds are adopted for modification treatment of cellulose fibers. The salt-free low-alkali cellulose fiber dyeing method has the beneficial technical effects that two kinds of specific modifiers are adopted, the synergistic effects of the modifiers are given play to and the specific dyeing steps are provided, so that salt-free low-alkali dyeing of the cellulose fibers is achieved, pollution is reduced, the cost is saved, the process is simplified, the difficulty is reduced, and the modification and dyeing effects are good; therefore the dyeing method is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a dyeing method of cellulose fibers, more specifically, the invention relates to a salt-free and low-alkali dyeing method 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 saliniz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/66D06P1/52D06P3/60D06P5/22
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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