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Salt-free low-alkali dyeing process for cellulosic fibers

A cellulose fiber and process technology, applied in the field of textile dyeing, can solve problems such as inability to apply to large-scale production, high chromaticity of dyeing residue, difficult treatment of waste water, etc., and achieves high success rate, good cationization effect, and reduced dye consumption. Effect

Inactive Publication Date: 2015-03-25
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 dyeing process for cellulosic fibers
  • Salt-free low-alkali dyeing process for cellulosic fibers
  • Salt-free low-alkali dyeing process for cellulosic fibers

Examples

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Effect test

Embodiment 1

[0080] Cellulose fiber dyeing process:

[0081] A salt-free and low-alkali dyeing process for cellulose fibers, comprising the following process steps:

[0082] A. Cellulose fiber modification treatment

[0083] Put the cellulose fiber into the container, add water to the container, and then modify the cellulose fiber with two kinds of quaternary ammonium salt cationic modifiers, Modifier A and Modifier B, and obtain Modified cellulose fiber; the modifier A is a small-molecular quaternary ammonium salt cationic modifier, and the modifier B is a high-molecular quaternary ammonium salt cationic modifier;

[0084] B. Washing treatment

[0085] Washing the modified cellulose fibers obtained through the modification treatment in step A;

[0086] C. Dyeing

[0087] Putting the modified cellulose fibers washed with water in step B into a dyeing container, adding a dye solution for dyeing, then raising the temperature, continuing to dye for a period of time, and finishing dyeing t...

Embodiment 2

[0092] Cellulose fiber dyeing process:

[0093] A salt-free and low-alkali dyeing process for cellulose fibers, comprising the following process steps:

[0094] A. Cellulose fiber modification treatment

[0095] Put the cellulose fiber into the container, add water to the container, and then use two kinds of quaternary ammonium salt cationic modifiers, modifier A and modifier B, to modify the cellulose fiber, and obtain Modified cellulose fiber; the modifier A is a small molecule quaternary ammonium salt cationic modifier, and the modifier B is a high molecular weight quaternary ammonium salt cationic modifier;

[0096] B. Washing treatment

[0097] Washing the modified cellulose fibers obtained through the modification treatment in step A;

[0098] C. Dyeing

[0099] Putting the modified cellulose fibers washed with water in step B into a dyeing container, adding a dye solution for dyeing, then raising the temperature, continuing to dye for a period of time, and finishing...

Embodiment 3

[0105] Cellulose fiber dyeing process:

[0106] A salt-free and low-alkali dyeing process for cellulose fibers, comprising the following process steps:

[0107] A. Cellulose fiber modification treatment

[0108] Put the cellulose fiber into the container, add water to the container, and then use two kinds of quaternary ammonium salt cationic modifiers, modifier A and modifier B, to modify the cellulose fiber, and obtain Modified cellulose fiber; the modifier A is a small molecule quaternary ammonium salt cationic modifier, and the modifier B is a high molecular weight quaternary ammonium salt cationic modifier;

[0109] B. Washing treatment

[0110] Washing the modified cellulose fibers obtained through the modification treatment in step A;

[0111] C. Dyeing

[0112] Putting the modified cellulose fibers washed with water in step B into a dyeing container, adding a dye solution for dyeing, then raising the temperature, continuing to dye for a period of time, and finishing...

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Abstract

The invention relates to a salt-free low-alkali dyeing process for cellulosic fibers and belongs to the technical field of textile dyeing. The salt-free low-alkali dyeing process comprises the steps of modification treatment, water processing, dyeing and aftertreatment of the cellulosic fibers, wherein in the modification treatment of the cellulosic fibers, a micromolecule quaternary ammonium salt cationic modifier and a macromolecule quaternary ammonium salt cationic modifier are adopted for carrying out modification treatment on the cellulosic fibers. According to the salt-free low-alkali dyeing process, two specific modifiers are adopted, and the synergistic effect of the two modifiers is used cooperatively with the specific dyeing step, so that salt-free low-alkali dyeing of the cellulosic fibers is realized in the dyeing process, pollution is reduced and the cost is reduced; moreover, the process is simplified; difficulty is reduced; modifying and dyeing effects are good; and the salt-free low-alkali dyeing process is suitable for industrial mass 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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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/66D06P1/52D06P1/48D06P3/60D06P5/22
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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