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

Method for little-water dyeing of cotton fabric by cochineal color

A cochineal red and dyed cotton technology, applied in the field of natural dye dyeing, can solve the problems of vacuum dye sublimation dyeing, such as large limitations, unrealistic, high requirements, etc., to improve dye uptake and color fastness, increase added value, reduce The effect of emissions

Active Publication Date: 2017-08-15
WUHAN TEXTILE UNIV
View PDF16 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, supercritical carbon dioxide dyeing equipment requires high requirements, high cost, and high investment, which is not realistic. Vacuum dye sublimation dyeing has a large limitation, and only a small amount of dye can complete the sublimation, while the operation of solvent dyeing is relatively simple.
The dyeing of organic solvents mostly focuses on the dyeing of chemical dyes such as disperse dyes and reactive dyes, such as Chinese patents 201510683767.3 and 201410152912.0, etc., while organic solvent dyeing of natural dye cochineal has not been reported

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

[0024] A method for dyeing cotton fabrics with less water content of cochineal, the specific dyeing method is as follows:

[0025] a. Preparation of finishing solution:

[0026] The relative molecular mass is 6×10 5 Chitosan is placed in the glacial acetic acid that mass percent concentration is 1%, stirs until completely dissolving, is configured into the chitosan finishing solution that concentration is 8g / L;

[0027] B. Cotton fabric finishing: pure cotton fabric is placed in the finishing solution prepared through step a by bath ratio of 1:30, adding sodium tripolyphosphate of 0.5% of the finishing solution weight, adopting two dipping and two rolling treatments, after treatment, pure The liquid carrying rate of the cotton fabric is 60%, placed in an ammonia atmosphere for 2-5 minutes, then washed with water, and baked at 40°C for 60 minutes to obtain a chitosan-modified cotton fabric;

[0028] c. Prepare dye solution: place natural dye cochineal in the mixed solution of...

Embodiment 2

[0032] A method for dyeing cotton fabrics with less water content of cochineal, the specific dyeing method is as follows:

[0033] a. Preparation of finishing solution:

[0034] The relative molecular mass is 7×10 5 Chitosan is placed in the glacial acetic acid that mass percentage concentration is 3%, stirs until completely dissolving, is configured into the chitosan finishing liquid of 12g / L;

[0035] b. Cotton fabric finishing: pure cotton fabric is placed in the finishing solution prepared through a step by a bath ratio of 1:30, adding sodium tripolyphosphate with 1.5% of the finishing solution weight, adopting two dipping and two rolling treatments, and the treated pure The liquid carrying rate of the cotton fabric is 90%, placed in an ammonia atmosphere for 2-5 minutes, then washed with water, and baked at 80°C for 20 minutes to obtain a chitosan-modified cotton fabric;

[0036] c. Preparation of dyeing solution: place the natural dye cochineal in a mixture of isopropa...

Embodiment 3

[0040] A method for dyeing cotton fabrics with less water content of cochineal, the specific dyeing method is as follows:

[0041] a. Preparation of finishing solution:

[0042] The relative molecular mass is 5×10 5 Chitosan is placed in the glacial acetic acid that mass percent concentration is 1%, stirs until completely dissolving, is configured into the chitosan finishing solution of 10g / L;

[0043] b. Cotton fabric finishing: the pure cotton fabric is placed in the finishing solution prepared through a step by a bath ratio of 1:30, and 1% epichlorohydrin of the finishing solution weight is added, and two dipping and two rolling treatments are adopted. The liquid carrying rate of the cotton fabric is 100%, placed in an ammonia atmosphere for 2-5 minutes, then washed with water, and baked at 60°C for 30 minutes to obtain a chitosan-modified cotton fabric;

[0044] c. Preparation of dye solution: place natural dye cochineal in the mixed solution of ethanol and water, ethano...

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

PropertyMeasurementUnit
Concentrationaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of a natural dye dyeing method, and concretely relates to a method for little-water dyeing of cotton fabric by cochineal color. The method comprises the following steps: a) preparing finishing liquid: taking chitosan, adding acetate acid gracial, stirring the materials to obtain the chitosan diluted finishing liquid; b) cotton fabric treatment: immersing the cotton fabric according to bath ratio of 1:30 in the chitosan finishing liquid, adding a cross-linking agent, employing two dipping and padding for treatment, placing the material under acid neutralization environment, washing the material and roasting the material to obtain the chitosan-modified cotton fabric; c) dye liquor preparation: dissolving the cochineal color in an mixed solution of an organic solvent and water, stirring the materials to obtain the dye liquor; and d) dyeing: placing the chitosan-modified cotton fabric according to bath ratio of 1: 30 in the dye liquor, washing the material, and drying the material. By chitosan modification treatment of the cotton fabric, an organic solvent system is employed for dyeing, dyeing waste water discharge is reduced, water repellency of the cotton fabric is increased, and the degree of dyeing and the color fastness of the cochineal color to the cotton fabric are increased.

Description

technical field [0001] The invention belongs to the technical field of dyeing methods of natural dyes, and in particular relates to a method for dyeing cotton fabrics with cochineal with less water. Background technique [0002] Natural dyes are a special kind in the dye industry. They mainly come from nature. Natural dyes refer to dyes obtained from plants, animals or mineral resources without artificial synthesis and little or no chemical processing. Natural dyes can be divided into plant dyes, animal dyes and mineral dyes according to the source, among which plant dyes are the main ones. Carmine is a natural anthraquinone pigment extracted from the cochineal female parasitic on the cactus. Unlike other natural pigments, its physical and chemical properties are very stable, and its color is pink to purple. It is regarded as the safest Natural pigments are used in the production of food, cosmetics, pharmaceuticals and textiles. [0003] After cochineal is dissolved in wat...

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): D06P1/34D06P3/60D06M15/03D06M13/188D06M11/72D06M13/207D06M13/11D06M101/06
CPCD06M11/72D06M13/11D06M13/188D06M13/207D06M15/03D06M2101/06D06P1/34D06P3/60
Inventor 柯贵珍朱坤迪徐卫林
Owner WUHAN TEXTILE UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com