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Cellulose fiber dyeing process adopting cationic modification

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

Inactive Publication Date: 2015-02-18
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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  • Cellulose fiber dyeing process adopting cationic modification
  • Cellulose fiber dyeing process adopting cationic modification
  • Cellulose fiber dyeing process adopting cationic modification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Cellulose fiber dyeing process:

[0079] A cationized modified dyeing process for cellulose fibers, comprising 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 molecule quaternary ammonium salt cationic modifier is a chlorotriazine type quaternary ammonium salt compound, and the high molecular weight quaternary ammonium salt cationic modifier is poly Epichlorohydrin dimethylamine;

[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 fi...

Embodiment 2

[0090] Cellulose fiber dyeing process:

[0091] A cationized modified dyeing process for cellulose fibers, comprising 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 molecule quaternary ammonium salt cationic modifier is a chlorotriazine type quaternary ammonium salt compound, and the high molecular weight quaternary ammonium salt cationic modifier is poly Epichlorohydrin dimethylamine;

[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 fib...

Embodiment 3

[0103] The small molecule quaternary ammonium salt cationic modifier of the present invention is a chlorotriazine type quaternary ammonium salt compound;

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

[0105] Chlorotriazine-type quaternary ammonium compounds:

[0106]

[0107] Polyepichlorohydrin dimethylamine:

[0108] 1) main chain type

[0109]

[0110] 2) branched chain type

[0111]

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Abstract

The invention relates to a cellulose fiber dyeing process adopting cationic modification, belonging to the technical field of textile dyeing. The dyeing process comprises the steps of cellulose fiber modification treatment, water washing treatment, dyeing and after-treatment, wherein in the step of cellulose fiber modification treatment, chlorotriazine quaternary ammonium salt compounds and polyepichlorohydrin dimethylamine are adopted for modification treatment of cellulose fibers. The cellulose fiber dyeing process adopting cationic modification 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 the cellulose fibers achieve salt-free low-alkali dyeing in dyeing, have the effects of reducing pollution, saving the cost, simplifying the process and reducing the difficulty, have good modification and dyeing effects, and are suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a cellulose fiber dyeing process, more specifically, the invention relates to a cationized modified cellulose fiber dyeing process, 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 and beco...

Claims

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Application Information

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IPC IPC(8): D06P1/66D06P1/607D06P3/60D06P5/22
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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