Supercharge Your Innovation With Domain-Expert AI Agents!

Constant-temperature dyeing method for purely cotton fabric

A technology of dyeing method and constant temperature, which is applied in dyeing method, textile and papermaking, etc.

Inactive Publication Date: 2015-03-25
JIANGSU JINCHENZHEN TEXTILE
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical combination between the vinylsulfone group (—SO2CH2CH2) and the sulfate group in the active group of β-hydroxyethylsulfone sulfate is unstable, and the conditions of use (pH value 10.5~11.0, temperature 60~ 65°C), the two will break quickly, and an elimination reaction will occur, so that the original hydrophilic β-hydroxyethyl sulfone sulfate becomes a hydrophobic vinyl sulfone group, and the solubility of the dye itself is significantly reduced.
The medium-temperature reactive dyes have poor salt-alkali solubility stability and are sensitive to alkali, which is the root cause of quality problems such as color spots, stains, color differences, and poor color fastness in dyeing.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A constant temperature dyeing method for pure cotton fabrics, specifically comprising the following steps:

[0022] 1) Immerse the pretreated gray cloth in a constant temperature dyeing vat at 45-55°C, the temperature of the constant temperature dyeing vat is preferably 50°C;

[0023] 2) Then add reactive dyes, anhydrous sodium sulfate and alkali in the constant temperature dye vat in sequence; wherein, the reactive dyes are medium-temperature reactive dyes, and the anhydrous sodium sulfate is added evenly in two times, and the amount of each addition is 20g , the intermediate interval is 10 minutes, and the alkali is added in 3 times, and the addition is successively 3g / L, 5g / L, 7g / L, and the intermediate interval is 10 minutes;

[0024] 3) After 25 minutes of dipping, drain the water, add glacial acetic acid and keep it for 8-12 minutes, preferably 10 minutes;

[0025] 4) Turn on the water and take out the gray cloth from the dyeing vat after washing in the water;

...

Embodiment 2

[0028] A constant temperature dyeing method for pure cotton fabrics, specifically comprising the following steps:

[0029] 1) Immerse the pretreated gray cloth in a constant temperature dyeing vat at 45-55°C, the temperature of the constant temperature dyeing vat is preferably 50°C;

[0030] 2) Then add reactive dyes, anhydrous sodium sulfate and alkali in the constant temperature dye vat in sequence; wherein, the reactive dyes are medium-temperature reactive dyes, and the anhydrous sodium sulfate is added evenly in two times, and the amount of each addition is 25g , the intermediate interval is 12 minutes, and the alkali is added in 3 times, and the addition is successively 3g / L, 5g / L, 7g / L, and the intermediate interval is 12 minutes;

[0031] 3) After 20 minutes of dipping, drain the water, add glacial acetic acid and keep it for 8-12 minutes, preferably 10 minutes;

[0032] 4) Turn on the water and take out the gray cloth from the dyeing vat after washing in the water;

...

Embodiment 3

[0035] A constant temperature dyeing method for pure cotton fabrics, specifically comprising the following steps:

[0036] 1) Immerse the pretreated gray cloth in a constant temperature dyeing vat at 45-55°C, the temperature of the constant temperature dyeing vat is preferably 50°C;

[0037] 2) Then add reactive dyes, anhydrous sodium sulfate and alkali in the constant temperature dye vat in sequence; wherein, the reactive dyes are medium-temperature reactive dyes, and the anhydrous sodium sulfate is added evenly in two times, and the amount of each addition is 22g , the intermediate interval time is 10 minutes, and the alkali is added in 3 times, and the addition amount is 3g / L, 5g / L, 7g / L, and the intermediate interval is 12 minutes;

[0038] 3) After 25 minutes of dipping, drain the water, add water, and then add glacial acetic acid for 8-12 minutes, preferably 10 minutes;

[0039] 4) Turn on the water and take out the gray cloth from the dyeing vat after washing in the wa...

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 constant-temperature dyeing method for a purely cotton fabric. The constant-temperature dyeing method comprises the following steps: soaking the pretreated gray fabric in a 45-55DEG C constant-temperature dye vat; then sequentially adding an active dye, anhydrous sodium sulfate and alkali into the constant-temperature dye vat; after performing dip dyeing for certain time, draining water, placing into water, then adding glacial acetic acid and keeping for 8-12minutes; draining water, washing with water and taking out the gray fabric from the dye vat; mangling moisture, and then drying the gray fabric, wherein the anhydrous sodium sulfate is added for many times at intervals of 10-15minutes, and the alkali is also added for many times at intervals of 10-15minutes. Through the mode, the stability of the dye can be improved, the color fastness is improved, and energy conservation, emission reduction and cost reduction can be realized.

Description

technical field [0001] The invention relates to the field of fabric treatment, in particular to a constant temperature dyeing method for pure cotton fabrics. Background technique [0002] Reactive dyes are colored organic compounds that dye cotton fibers. The conventional reactive dyes used in the traditional process must be dyed at a high temperature of 60-80°C to meet the requirements of affinity, dyeing fastness, water solubility and level dyeing of fibers without forming lakes. Because the dyeing temperature of 60-80°C has a large range of instability, the color stability is also poor. Moreover, the operation of heating and cooling increases the dyeing time and consumes a lot of energy. [0003] The molecular structure of medium-temperature reactive dyes generally contains 1 to 2 strong hydrophilic groups (-SO3Na) and hydrophilic β-hydroxyethyl sulfone sulfate active groups, so the solubility is good. In a neutral bath at 50-60°C, the solubility can usually reach abov...

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
Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/38D06P1/673D06P3/66
Inventor 殷金华
Owner JIANGSU JINCHENZHEN TEXTILE
Features
  • R&D
  • 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