Modified lignosulfonate paste for cationic dye printing of acrylic fabric and its preparation method and application

A technology of lignosulfonate and cationic dyes, which can be used in dyeing, textiles and papermaking. It can solve the problems of inability to disperse uniform chemical additives, high price of modified starch paste, and large viscosity changes, and achieve soaping. High level of color fastness, high color fastness to dry rubbing, and little change in viscosity

Active Publication Date: 2022-07-05
WUHAN TEXTILE UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Literature research shows that although lignosulfonate has received widespread attention in many fields, there are few reports on its use in the field of printing pastes, and further exploration is needed
The cationic dye printing of acrylic fabric usually uses modified starch paste, but the price of modified starch paste is high and the depaste rate is low, so it is urgent to find a paste to replace modified starch
Lignosulfonate is a potential material for paste, however, lignosulfonate is not easy to paste, it can not make chemical additives evenly dispersed in the colloid system, its viscosity changes greatly when diluted, due to The existence of these unfavorable factors limits the application of lignosulfonate in the field of printing pastes, and it is necessary to break through these unfavorable factors technically

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
  • Modified lignosulfonate paste for cationic dye printing of acrylic fabric and its preparation method and application
  • Modified lignosulfonate paste for cationic dye printing of acrylic fabric and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method of the modified lignosulfonate paste for cationic dye printing of acrylic fabrics, the specific method comprises the following steps:

[0024] (1) weigh 11g of sodium lignosulfonate and add it to the closed reactor, pass nitrogen into the reactor to remove the air in the upper space, add 150mL of 3wt% NaOH aqueous solution, stir and dissolve; take ethylene oxide and dissolve it in ethanol to prepare To obtain an ethanol solution containing 15wt% of ethylene oxide, slowly add 15 mL of the ethanol solution containing ethylene oxide into the reaction kettle, and carry out the reaction at 65 ° C for 7 hours; after the reaction is completed, add 150 mL of distilled water to dilute, cool to room temperature, and use ice The pH value was adjusted to 6.5 with acetic acid, and the impurities were removed by centrifugation; the supernatant was slowly added to 4 times the volume of 95% ethanol, left for 3 h, suction filtered to obtain a filter cake, washed wi...

Embodiment 2

[0028] The preparation method of the modified lignosulfonate paste for cationic dye printing of acrylic fabrics, the specific method comprises the following steps:

[0029] (1) weigh 10g of sodium lignosulfonate and add it to the closed reactor, pass nitrogen into the reactor to remove the air in the upper space, add 100mL of 2wt% NaOH aqueous solution, stir and dissolve; take ethylene oxide and dissolve it in ethanol to prepare To obtain an ethanol solution containing 10wt% of ethylene oxide, slowly add 10 mL of the ethanol solution containing ethylene oxide into the reaction kettle, and carry out the reaction at 60 ° C for 6 hours; after the reaction, add 100 mL of distilled water to dilute, cool to room temperature, and use ice The pH value was adjusted to 6 with acetic acid, and the impurities were removed by centrifugation; the supernatant was slowly added to 3 times the volume of 95% ethanol, allowed to stand for 2 hours, and the filter cake was obtained by suction filtra...

Embodiment 3

[0033] The preparation method of the modified lignosulfonate paste for cationic dye printing of acrylic fabrics, the specific method comprises the following steps:

[0034] (1) Weigh 12g of sodium lignosulfonate and add it to a closed reactor, pass nitrogen into the reactor to remove the air in the upper space, add 200mL of 4wt% NaOH aqueous solution, stir and dissolve; take ethylene oxide and dissolve it in ethanol to prepare To obtain an ethanol solution containing 20wt% of ethylene oxide, slowly add 20 mL of the ethanol solution containing ethylene oxide into the reaction kettle, and carry out the reaction at 70 ° C for 8 hours; after the reaction, add 200 mL of distilled water to dilute, cool to room temperature, use ice The pH value was adjusted to 7 with acetic acid, and impurities were removed by centrifugation; the supernatant was slowly added to 5 times the volume of 95% ethanol, allowed to stand for 4 h, filtered to obtain a filter cake, washed with absolute ethanol, ...

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 a modified lignosulfonate paste for cationic dye printing of acrylic fabrics, and a preparation method and application thereof. The paste is prepared by reacting lignosulfonate with ethylene oxide and 2-chloroethyldiethylamine to graft polyoxyethyl long-chain branches and ammonium cations. The modified lignosulfonate paste prepared by the invention is used for cationic dye printing of acrylic fiber fabrics, and the prepared printing fabric shows that the depaste rate is higher than 89%, the softness is good, the outline definition is high, and the permeability is higher than 88%. %; The color fastness to dry rubbing and the color fastness to soaping are high, and it has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of paste, and in particular relates to a modified lignosulfonate paste for cationic dye printing of acrylic fabrics and a preparation method and application thereof. Background technique [0002] Printing paste refers to a polymer compound that thickens in the color paste, which can be dispersed in water to make a thick colloidal solution with a certain concentration. In the actual printing process of textiles, the paste is the carrier that transfers the dyes and chemicals in the printing paste to the fabric, and is the main component of the printing paste. Although there are many factors affecting the printing quality, the properties of the printing paste largely determine the final printing effect of the fabric and are the key factor affecting the printing effect. [0003] Basic dyes are also called salt-based dyes. Most of their chromophoric groups are organic bases, which ...

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 Patents(China)
IPC IPC(8): D06P1/48D06P1/41D06P3/76C08H7/00
CPCD06P1/48D06P1/41D06P3/76C08H6/00
Inventor 周凡雨彭雄义刘仰硕董雄伟李强蔡亚军蔡映杰
Owner WUHAN TEXTILE UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap