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Salt-free low-alkali cellulose fiber modified dyeing process

A technology of cellulose fiber and alkali modification, applied in the field of textile dyeing, can solve the problems of not being suitable for large-scale production, high chromaticity of dyeing residue, difficult treatment of wastewater, etc., and achieves high success rate, good cationization effect, and dyestuff. Consumption reduction effect

Inactive Publication Date: 2015-02-18
HMEI THREAD CO LTD OF YINBIN SICHUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Examples

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Effect test

Embodiment 1

[0078] Cellulose fiber dyeing process:

[0079] A salt-free and low-alkali 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 an epoxy quaternary ammonium salt compound, and the high molecular weight quaternary ammonium salt cationic modifier is a branched 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] Putting the...

Embodiment 2

[0090] Cellulose fiber dyeing process:

[0091] A salt-free and low-alkali 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 an epoxy quaternary ammonium salt compound, and the high molecular weight quaternary ammonium salt cationic modifier is a branched chain type polyepichlorohydrin dimethylamine;

[0094] B. Washing treatment

[0095] The modified cellulose fibers obtained by the modification treatment in step A are washed with water;

[0096] C. to dye

[0097] Pu...

Embodiment 3

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

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

[0105] Epoxy quaternary ammonium compound:

[0106]

[0107] Branched polyepichlorohydrin dimethylamine:

[0108]

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Abstract

The invention relates to a salt-free low-alkali cellulose fiber modified 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, epoxy quaternary ammonium salt compounds and branched polyepichlorohydrin dimethylamine are adopted for modification treatment of cellulose fibers. The salt-free low-alkali cellulose fiber modified 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 involves a chromosomal technology of a cellulose fiber. More specifically, the invention involves a cellulose fiber -free low -alkali -alkali -modified chromatin, which is the field of textile dyeing technology. Background technique [0002] Traditional cellulose fiber dyeing process is generally about 40-70%, with a low upper dyeing rate and a large floating color. In order to overcome the obstacles during the dyeing process, a large amount of inorganic salt must be added to the dye solution to improve the upper dyeing dyeRate; in order to achieve the purpose of fixing color, the hydroxyl group on the cellulose needs to be ionized under strong alkaline conditions. Therefore, a large amount of pure alkali must be added to the dyeing solution in the later stages of dyeing.The treatment of inorganic salts and alkali has always been a problem that plagues the industry. A large number of inorganic salts that are neither recovered nor degraded into...

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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