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Salt-free low-alkaline modifying dyeing method of cellulose fiber

A technology of cellulose fiber and dyeing method, which is applied in dyeing method, textiles and paper making, etc. It can solve the problems of inapplicability to large-scale production, high chroma of dyeing residual liquid, difficult treatment of waste water, etc., and achieves difficult hydrolysis, uniform dyeing, The effect of not easy to spread and penetrate

Pending Publication Date: 2015-03-11
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-alkaline modifying dyeing method of cellulose fiber
  • Salt-free low-alkaline modifying dyeing method of cellulose fiber
  • Salt-free low-alkaline modifying dyeing method of cellulose fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Cellulose fiber dyeing process:

[0079] The salt-free and low-alkali modified 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 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 a cationic polyacrylamide Compounds;

[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 w...

Embodiment 2

[0090] Cellulose fiber dyeing process:

[0091] The salt-free and low-alkali modified 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 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 a cationic polyacrylamide Compounds;

[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 w...

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 a cationic polyacrylamide compound.

[0105] Epoxy quaternary ammonium compound:

[0106]

[0107] Cationic polyacrylamide compounds:

[0108]

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Abstract

The invention relates to a salt-free low-alkaline modifying dyeing method of a cellulose fiber, and belongs to the technical field of dope dyeing. The method disclosed by the invention comprises the following steps of modified treatment, water processing, dyeing and aftertreatment for the cellulose fiber, wherein the modified treatment for the cellulose fiber adopts an epoxy quaternary ammonium salt compound and a cationic polyacrylamide compound to perform the modified treatment on the cellulose fiber. The method disclosed by the invention adopts two kinds of specific modifying agents, has the function of the synergistic effect of the two agents, and matches with specific dyeing steps, so that the salt-free low-alkaline dyeing for the cellulose fiber is realized in dyeing, pollution is reduced, the cost is saved, the technology is simplified, the difficulty is reduced, and the modifying effect and the dyeing effect are good, so that the method is suitable for the industrial mass 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 modified 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 i...

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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