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Salt-free low-alkali cellulose fiber dyeing process

A cellulose fiber and process technology, applied in the field of textile dyeing, can solve the problems of inapplicability to large-scale production, high chroma of dyeing residual liquid, and difficult treatment of waste water, etc., and achieve the effect of not easy hydrolysis, uniform dyeing, difficult diffusion and penetration

Pending 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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  • Salt-free low-alkali cellulose fiber dyeing process
  • Salt-free low-alkali cellulose fiber dyeing process
  • Salt-free low-alkali cellulose fiber dyeing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Cellulose fiber dyeing process:

[0079] A salt-free and low-alkali 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 , modified cellulose fibers are obtained after the modification treatment is completed; the small molecule quaternary ammonium salt cationic modifier is the epichlorohydrin parent derivative of the epoxy quaternary ammonium salt, and the high molecular quaternary ammonium salt cationic modified The main chain type polyepichlorohydrin dimethylamine;

[0082] B. Washing treatment

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

[0084] C. Dyeing

[0085...

Embodiment 2

[0090] Cellulose fiber dyeing process:

[0091] A salt-free and low-alkali 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 , modified cellulose fibers are obtained after the modification treatment is completed; the small molecule quaternary ammonium salt cationic modifier is the epichlorohydrin parent derivative of the epoxy quaternary ammonium salt, and the high molecular quaternary ammonium salt cationic modified The main chain type polyepichlorohydrin dimethylamine;

[0094] B. Washing treatment

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

[0096] C. Dyeing

[0097...

Embodiment 3

[0103] The small molecule quaternary ammonium salt cationic modifier of the present invention is the epichlorohydrin parent derivative of epoxy quaternary ammonium salt;

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

[0105] Epichlorohydrin parent derivatives of epoxy quaternary ammonium salts:

[0106]

[0107] Main chain polyepichlorohydrin dimethylamine:

[0108]

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Abstract

The invention relates to a salt-free low-alkali cellulose fiber dyeing process, belonging to the technical field of textile dyeing. The 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, an epichlorohydrin parent derivative of epoxy quaternary ammonium salt and branched polyepichlorohydrin dimethylamine are adopted for modification treatment of cellulose fibers. The salt-free low-alkali cellulose fiber dyeing process 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 dyeing process of cellulose fibers, more specifically, the invention relates to a salt-free and low-alkali 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 salin...

Claims

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Application Information

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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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