Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Soaping agent for continuous dyeing and application thereof

A technology of soaping agent and soaping liquid, which is applied in the field of continuous dyeing of reactive dyes, can solve the problems of energy consumption, time consumption, prolonging soaping time, high consumption, etc., and achieve high-efficiency soaping, remarkable water-saving effect, and improved The effect of energy saving and emission reduction benefits

Pending Publication Date: 2022-03-22
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For reactive dye dyeing, reactive dye molecules contain active groups that can react with hydroxyl groups in cellulose and amino groups in protein fibers, and form covalent bonds with fibers during dyeing to form "dye-fiber" compounds, which are The soaping process for removing floating colors and unfixed dyes on the surface of fabrics is a key process to improve the color fastness of dyed fabrics. Traditional dyeing processes require multiple washing and soaping steps to obtain a good effect of removing floating colors, so there are high Disadvantages of consumption and high pollution
The dyeing process is divided into two types: intermittent exhaust dyeing and continuous pad dyeing according to the dyeing method of reactive dyes. Taking continuous pad dyeing as an example, it needs to go through cold water washing→hot water washing→soap washing→hot water washing→cold water washing. The number of washing processes will be increased according to the color and fabric type; compared with pad dyeing, dip dyeing needs to be dyed for many times, drained and watered, and kept warm to prolong the soaping time; therefore, the energy consumption of these two soaping processes Time-consuming and water-consuming problems need to be solved urgently

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Soaping agent for continuous dyeing and application thereof
  • Soaping agent for continuous dyeing and application thereof
  • Soaping agent for continuous dyeing and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Soaping agent formula: methylnaphthalenesulfonic acid formaldehyde condensate 1.0%, sodium sulfate 3.0%, pyrrolidone 1.0%, sodium dithionite 15%, sodium persulfate 15%, citric acid 20% and sodium carboxymethylcellulose 45% .

[0039] Dyeing with reactive dyes: After padding the corduroy fabric with reactive blue SNE 25g / L, the liquid retention rate was 85%, and the color was fixed by steaming at 102°C for 3min.

[0040] The soaping process of the present invention: after fixing the color, the fabric is directly placed in the soaping liquid at 85° C. for 15 minutes, the bath ratio is 1:30, and the concentration of the soaping agent is 3%. There is no need to wash after soaping, and the fabric is dried directly after being taken out, and the soaping liquid is recycled and reused.

[0041] Conventional soaping process: After fixing the color, the fabric is washed in cold water for 5 minutes at a liquor ratio of 1:30 → washed in hot water at 50-60°C for 5 minutes → soaped ...

Embodiment 2

[0047] Soaping agent formula: pyrrolidone 1.5%, sodium sulfate 3.0%, methylnaphthalenesulfonic acid formaldehyde condensation 1.0%, sodium dithionite 15%, sodium persulfate 15%, sodium bisulfite 3%, citric acid 25% and carboxymethyl Sodium cellulose base 36.5%.

[0048] Dyeing with reactive dyes: After padding the corduroy fabric with reactive blue SNE 25g / L, the liquid retention rate was 85%, and the color was fixed by steaming at 102°C for 3min.

[0049] The soaping process of the present invention: after fixing the color, the fabric is directly placed in a soaping solution at 100° C. for 1 min, and the concentration of the soaping solution is 1%. After the soaping treatment, no washing is required, and the fabric is taken out and dried directly. The obtained fabric color parameters, chromaticity of wastewater and COD value are shown in Table 2.

[0050]

[0051] Table 2 shows that the apparent color depth K / S value of the dyed fabric obtained by the high-efficiency wate...

Embodiment 3

[0053] Soaping agent formula: methylnaphthalenesulfonic acid formaldehyde condensate 1.5%, sodium sulfate 3.0%, pyrrolidone 1.5%, sodium dithionite 15%, sodium metabisulfite 10%, sodium persulfate 10%, citric acid 15% and carboxymethyl Sodium Cellulose 44%.

[0054] Dyeing with reactive dyes: After padding the corduroy fabric with reactive red 3BS 60g / L, the liquid retention rate was 85%, and the color was fixed by steaming at 102°C for 5min.

[0055] The soaping process of the present invention: after fixing the color, the fabric is directly placed in a soaping solution at 100° C. for 5 minutes, and the concentration of the soaping agent is 5%. After the soaping treatment, no washing is required, and the fabrics are taken out and dried directly. The obtained fabric color parameters, wastewater chromaticity and COD values ​​are shown in Table 3.

[0056]

[0057]

[0058] Table 3 shows that the apparent color depth K / S value of the dyed fabric obtained by the high-effic...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a soaping agent for continuous dyeing, which is applied to a continuous dyeing process of reactive dyes and comprises 2.5-6.0 parts of a dye cluster state regulator, 15-35 parts of a flooding remover, 15-25 parts of citric acid and the balance of sodium carboxymethyl cellulose. The dye cluster state regulator is prepared from the following components in parts by weight: 0.5 to 1.5 parts of methylnaphthalene sulfonic acid formaldehyde condensate, 1.0 to 3.0 parts of sodium sulfate and 1.0 to 1.5 parts of pyrrolidone; the flooding remover is selected from any one or more of sodium hydrosulfite, sodium pyrosulfite, sodium persulfate, sodium hydrogen sulfite and potassium persulfate. The obtained soaping agent for continuous dyeing is applied to a continuous dyeing process of reactive dyes, soaping treatment for efficiently removing flooding can be completed only through one-time soaping operation, and multiple washing steps are omitted, so that the soaping process flow is remarkably simplified, the soaping time is shortened, and the problem of colored wastewater discharge is solved from the source.

Description

technical field [0001] The invention relates to the technical field of continuous dyeing with reactive dyes, in particular to a soaping agent for continuous dyeing and an application thereof. Background technique [0002] The traditional printing and dyeing industry produces a large amount of highly chromatic waste water rich in dyes, additives, electrolytes and other refractory substances during the production process, which has a very bad impact on the ecological environment and has become a highly polluting industry. With the severe situation of environmental protection in our country, the printing and dyeing industry is committed to the technical research and development of energy saving and emission reduction, green sustainable and clean production. [0003] Reactive dyes are widely used in the printing and dyeing process. Reactive dyes, also known as reactive dyes, are a type of water-soluble dyes that appeared in the 1950s. Because of their bright colors, good level d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): D06P5/04D06P5/08D06P5/10D06P5/06D06P1/38D06P3/66
CPCD06P5/04D06P5/08D06P5/10D06P5/06D06P1/38D06P3/66
Inventor 舒大武张连兵李海瑞张维安芳芳连增帅闫会涛齐阳
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com