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

Preparation of modified burdock polysaccharide and application of modified burdock polysaccharide to reactive dye dyeing

A burdock polysaccharide, modified technology, applied in the field of dyeing, can solve the problems of not achieving color fastness to washing and color fastness to wet rubbing, unsatisfactory color fastness to wet rubbing, harming human health, etc., and achieves low cost and easy preparation The process is easy to operate, and the effect of color fixation is good

Active Publication Date: 2019-03-01
叶怡晴
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's printing and dyeing industry has used more color-fixing agents for a long time, all of which contain free formaldehyde, which is not only harmful to the environment, but also causes harm to human health when worn.
In recent years, some new color-fixing agents have been developed, such as cationic resin-type color-fixing agents, quaternary ammonium salt formaldehyde-free color-fixing agents, and quaternized reactive formaldehyde-free color-fixing agents. The color fastness to wet rubbing is still not ideal. For reactive dyes, it has not yet reached the requirements of both color fastness to washing and color fastness to wet rubbing.

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
  • Preparation of modified burdock polysaccharide and application of modified burdock polysaccharide to reactive dye dyeing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Vacuum-dry the burdock at 70°C for 4 hours, then crush it with a pulverizer to pass through a 40-mesh sieve, and dry the burdock powder at 60°C for 12 hours for later use;

[0025] (2) Take the dried burdock powder in the reactor, add 1wt% sodium hydroxide solution, control the solid-liquid ratio to 1:40, and the solid-liquid ratio unit is g / mL, heat up to 60°C, and extract for 8 hours;

[0026] (3) Filter the extract in step (2), take the supernatant and adjust the pH value to 3.0 with hydrochloric acid, then centrifuge at 4000r / min for 20min, and collect the supernatant;

[0027] (4) Concentrate the supernatant under reduced pressure at 60°C to one-half of the original volume, then mix the concentrate with 90wt% ethanol solution at a ratio of 1:1, place at -4°C for 12h, and precipitate out;

[0028] (5) Centrifuge the supernatant after the precipitate precipitated in step (4), centrifuge at 4000r / min for 20min, collect the precipitate, and dry it at 60°C to consta...

Embodiment 2

[0032] (1) Vacuum-dry the burdock at 70°C for 4 hours, then crush it with a pulverizer to pass through a 40-mesh sieve, and dry the burdock powder at 60°C for 12 hours for later use;

[0033] (2) Take the dried burdock powder in the reactor, add 1wt% sodium hydroxide solution, control the solid-liquid ratio to 1:30, and the solid-liquid ratio unit is g / mL, heat up to 90°C, and extract for 4 hours;

[0034] (3) Filter the extract in step (2), take the supernatant and adjust the pH value to 3.0 with hydrochloric acid, then centrifuge at 4000r / min for 20min, and collect the supernatant;

[0035] (4) Concentrate the supernatant under reduced pressure at 60°C to one-half of the original volume, then mix the concentrate with 90wt% ethanol solution at a ratio of 1:1, place at -4°C for 12h, and precipitate out;

[0036] (5) Centrifuge the supernatant after the precipitate precipitated in step (4), centrifuge at 4000r / min for 20min, collect the precipitate, and dry it at 60°C to consta...

Embodiment 3

[0040] (1) Vacuum-dry the burdock at 70°C for 4 hours, then crush it with a pulverizer to pass through a 40-mesh sieve, and dry the burdock powder at 60°C for 12 hours for later use;

[0041] (2) Take the dried burdock powder in the reactor, add 1wt% sodium hydroxide solution, control the solid-liquid ratio to 1:38, and the solid-liquid ratio unit is g / mL, heat up to 70°C, and extract for 7 hours;

[0042] (3) Filter the extract in step (2), take the supernatant and adjust the pH value to 3.0 with hydrochloric acid, then centrifuge at 4000r / min for 20min, and collect the supernatant;

[0043] (4) Concentrate the supernatant under reduced pressure at 60°C to one-half of the original volume, then mix the concentrate with 90wt% ethanol solution at a ratio of 1:1, place at -4°C for 12h, and precipitate out;

[0044] (5) Centrifuge the supernatant after the precipitate precipitated in step (4), centrifuge at 4000r / min for 20min, collect the precipitate, and dry it at 60°C to consta...

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 relates to preparation of modified burdock polysaccharide and application of the modified burdock polysaccharide to reactive dye dyeing, and belongs to the technical field of dyeing. A preparation method of the modified burdock polysaccharide comprises the following steps of performing vacuum drying on burdock, and crushing the burdock into powder; putting the powder into a reactor,and performing extraction by sodium hydroxide; regulating the pH value of liquid supernatant after the extraction to 3.0; performing centrifugation to collect the liquid supernatant; performing reduced pressure concentration on the liquid supernatant; then, performing mixing with ethanol solution; after precipitates are separated out, performing centrifugation on the obtained liquid supernatant; collecting precipitates; performing drying at 60 DEG C to reach the constant weight so as to obtain the burdock polysaccharide; and modifying the burdock polysaccharide by 3-chloro-2-hydroxypropyl trimethylammonium chloride so as to obtain the modified burdock polysaccharide. According to the preparation of modified burdock polysaccharide involved in the invention, the burdock polysaccharide is extracted from the natural plant burdock; then, the burdock polysaccharide is subjected to etherification modification to prepare and obtain the modified burdock polysaccharide, and the film-forming performance is improved, so that the crosslinking effect can be generated with dye and fiber, and therefore, a good color fixing effect is achieved.

Description

technical field [0001] The invention relates to the technical field of dyeing, in particular to the preparation of a modified burdock polysaccharide and its application in reactive dye dyeing. Background technique [0002] There are some water-soluble groups in the molecular structure of reactive dyes, and their color fastness, especially the color fastness to washing, is often poor, so it is necessary to adopt color fixing methods to improve their color fastness. The color-fixing agents used in my country's printing and dyeing industry for a long time contain free formaldehyde, which is not only harmful to the environment, but also harmful to human health when worn. In recent years, some new color-fixing agents have been developed, such as cationic resin-type color-fixing agents, quaternary ammonium salt formaldehyde-free color-fixing agents, and quaternized reactive formaldehyde-free color-fixing agents. The color fastness to wet rubbing is still not ideal, and for reacti...

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): C08B37/00D06P1/38D06P3/66
CPCC08B37/00C08B37/0003D06M2101/06D06P1/38D06P3/66
Inventor 张杰
Owner 叶怡晴
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