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Composite salt-free dyeing and finishing process

A salt-free dyeing and crafting technology, applied in the field of textile printing and dyeing, can solve the problems of being unable to be widely used, achieve high dyeing rate, high salt-free dyeing, and simplify the process

Inactive Publication Date: 2019-08-23
QINGYUAN RUIHUA ADDITIVES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method does not require cationic modification treatment, it is only suitable for several specific dyes with high directness and cannot be widely used

Method used

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  • Composite salt-free dyeing and finishing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A composite salt-free dyeing and finishing process, comprising the following steps:

[0028] (1) Composite pretreatment: put the light-colored cotton fabric in water with a bath ratio of 1:15, add 2% owf liquid alkali agent E, 5% owf 30% hydrogen peroxide, and 5% owf new salt agent A, Keep warm at 98°C for 45 minutes, then drain and wash with water; liquid alkaline agent E is triethylenediamine; new salt agent A is methacryloyloxyethyltrimethylammonium chloride, dioctadecyldimethylammonium The combination of ammonium chloride, wherein, the weight ratio of methacryloyloxyethyltrimethylammonium chloride and dioctadecyldimethylammonium chloride is 1:0.8.

[0029] (2) Salt-free dyeing: place the washed base in water with a bath ratio of 1:15, add 0.5% owf reactive dyes, keep warm at 60°C for 45 minutes, and then wash, soap, wash, and dry in sequence Dry.

[0030] This embodiment is applicable to the dyeing and finishing of light-colored cotton fabrics.

Embodiment 2

[0032] A composite salt-free dyeing and finishing process, comprising the following steps:

[0033] (1) Composite pretreatment: put the dark cotton fabric in water with a bath ratio of 1:10, add 3% owf organic alkali, 2% owf 30% hydrogen peroxide, and 10% owf salt, at 95°C Keep warm for 30 minutes, then drain and wash with water; the organic base is a compound buffer organic base, and the compound buffer organic base is a combination of triethylenediamine and N,N-dimethylaniline; wherein, triethylenediamine and N, N-dimethylaniline in a weight ratio of 1:1; the salt agent is a combination of methacryloyloxyethyltrimethylammonium chloride and dioctadecyldimethylammonium chloride , wherein, the weight ratio of methacryloxyethyltrimethylammonium chloride and dioctadecyldimethylammonium chloride is 1:1;

[0034] (2) Salt-free dyeing: place the washed base in water with a bath ratio of 1:10, add 6% owf of reactive dyes and 1.5% owf of organic alkali, keep warm at 60°C for 60 minut...

Embodiment 3

[0037] A composite salt-free dyeing and finishing process, comprising the following steps:

[0038] (1) Composite pretreatment: place the billet in water with a bath ratio of 1:12, add 2.5% owf organic base, 4% owf 30% hydrogen peroxide, and 8% owf salt, and keep it warm at 97°C for 40 minutes , then draining and washing; the organic base is a composite buffer organic base, and the composite buffer organic base is a combination of triethylenediamine and N, N-dimethylaniline; wherein, triethylenediamine and N, The weight ratio of N-dimethylaniline is 1:3; the salt agent is a combination of methacryloyloxyethyltrimethylammonium chloride and dioctadecyldimethylammonium chloride, among which, methacrylic The weight ratio of acyloxyethyltrimethylammonium chloride and dioctadecyldimethylammonium chloride is 1:0.8-1:0.9;

[0039] (2) Salt-free dyeing: arrange the blank treated in step (1) in water with a bath ratio of 1:13, add 3% owf dyes, 1% owf organic base, keep warm at 60°C for...

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Abstract

The invention belongs to the technical field of textile dyeing and printing and particularly relates to a composite salt-free dyeing and finishing process. The composite salt-free dyeing and finishingprocess includes the steps of firstly, performing composite preprocessing, to be more specific, placing gray fabric into water with that bath ratio being 1:10-1:15, adding 2-3%owf of organic base, 2-5%owf of hydrogen peroxide and 5-10%owf of salt agent, performing heat preservation at 95-98 DEG C for 30-45 minutes, discharging liquid, and washing; secondly, performing salt-free dyeing, to be morespecific, placing the gray fabric processed by the first step into water with the bath ratio being 1:10-1:15, adding 0.5-6%wof of dye and 0-1.5%owf of organic base, performing heat preservation at 55-65 DEG C for 45-60 minutes, and sequentially washing, soaping, washing and drying. The composite salt-free dyeing and finishing process has the advantages that cellulose fiber preprocessing and positive ion modification are combined due to the fact that both the cellulose fiber preprocessing and positive ion modification are performed under a strong base condition, the dyeing is completed under asalt-free low-base condition, and accordingly process flow is shortened, and the dyeing effect is guaranteed; meanwhile, the process is applicable to most reactive dye and does not need dye selection.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to a compound salt-free dyeing and finishing process. Background technique [0002] Reactive dyes are the most important class of dyes for cellulose fiber dyeing. The most prominent problem of reactive dyes is the low dyeing rate and fixation rate. In the traditional dyeing process of cellulose fibers, in order to improve the dyeing rate and fixation rate of reactive dyes, a large amount of inorganic salt must be added. This soluble salt is difficult to Treated by physical, chemical or biological methods, the discharge of high-salt printing and dyeing wastewater destroys the ecological environment of the water, and the high permeability of salt leads to salinization of the soil around the rivers and lakes, posing a serious threat to the ecological environment. In recent years, the salt-free and low-salt dyeing of reactive dyes has become a hot resear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P1/673D06P1/645D06P3/66
CPCD06P1/38D06P1/645D06P1/673D06P3/66
Inventor 高俊高然
Owner QINGYUAN RUIHUA ADDITIVES CO LTD
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