Levelling agent and preparation method and application thereof

A technology of leveling agent and solvent, which is applied in the field of textile printing and dyeing, and can solve problems such as the inability to achieve dyeing uniformity

Active Publication Date: 2018-08-17
SUZHOU TANGHUA NANO TECH
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] But, when this chitosan derivative dispersant is added in the dyestuff and carries out large-scale continuous dyeing under normal temperature and pressure, because the contact time of dyestuff and fabric is very short, only 10~20s, and the area of ​​fabric ex

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
  • Levelling agent and preparation method and application thereof
  • Levelling agent and preparation method and application thereof
  • Levelling agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Step 1: Preparation of halogenated crosslinking agent

[0072] Under the condition of ice-water bath, add oleic acid, hydrogen bromide, and chloroform respectively in a certain mass ratio to the three-necked flask, reflux with a straight condenser tube, stir, and react for 30-50 minutes, wash the product with water until it is neutral, add distilled bottle, and placed in a constant temperature water bath at 70-75°C to distill off the solvent chloroform and unreacted hydrogen bromide to obtain the yellow product A.

[0073] The mass ratio of oleic acid, hydrogen bromide and chloroform is: 1:0.28-0.35:1.78-2.14.

[0074] The equation for the reaction is:

[0075]

[0076] Step 2: Chitosan Modification

[0077] Add chitosan, sodium hydroxide, and product A to carbon tetrachloride in a certain proportion, stir at 80-100°C, react for 3-4 hours, and distill under reduced pressure at 40°C to obtain product B. Wherein chitosan selects the relative molecular mass produced ...

Embodiment 2

[0094] The overall idea of ​​embodiment 2 is carried out according to embodiment 1, and specific parameters are as follows:

[0095] The mass ratio of oleic acid, hydrogen bromide, and chloroform in step one is set as: 1:0.28:1.78, and product A is obtained by distillation at 70 ° C, and then chitosan, sodium hydroxide, product A, tetrachloromethane The mass ratio of carbonization is set as: 1:0.50:2.30:5.00, react at 80°C for 3 hours to obtain product B, and then set the mass ratio of glycerin, product B, catalyst, and toluene in step 3 as: 1:16.50 : 0.07: 4.00, product C was obtained by reacting at 140°C for 4 hours.

[0096] In step four, disperse red 3B, sodium lauryl sulfate, glycerin, and dispersant are ground with mass fractions of 2wt%, 3wt%, 2wt%, and 1wt% to prepare nano dyes, and then use 1.0g / L Add product C, add acetic acid to adjust the pH value of the dyeing slurry to 5.5, choose 190T, 58g / m 2 For polyester taffeta, according to step 4 dyeing method 1, set the...

Embodiment 3

[0097] The overall idea of ​​embodiment 3 is carried out according to embodiment 1, and specific parameters are as follows:

[0098] The mass ratio of oleic acid, hydrogen bromide, and chloroform in step one is set as: 1:0.31:2.00, and product A is obtained by distillation at 73°C, and then chitosan, sodium hydroxide, product A, tetrachloromethane The mass ratio of carbonization is set as: 1:0.55:2.35:5.50, react at 90°C for 3.5 hours to obtain product B, and then set the mass ratio of glycerin, product B, catalyst, and toluene in step 3 as: 1:17.00 : 0.08: 4.10, reacted at 145°C for 4.5 hours to obtain product C.

[0099] In step 4, disperse yellow G, sodium lauryl sulfate, glycerin, dispersant are ground with the mass fraction of 3.5wt%, 4wt%, 2.5wt%, 1.5wt%, prepare nano-dye, then with 1.5g / Add the amount of L to solid C, add acetic acid to adjust the pH value of the dyeing slurry to 6.0, choose 300T, 63g / m 2 Pongee, according to step 4 dyeing method 1, set the fabric ru...

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
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a levelling agent and a preparation method and an application thereof. A structural formula of the levelling agent is as shown in the following specification, wherein n is a number between 5 and 10. The levelling agent has the good film-forming property, and contains abundant ester groups, and is capable of combining with dye through a hydrogen bond, thereby uniformly carrying the dye to the surface of fabric and forming a film in uniform thickness, enabling the dye to be uniformly adhered to the fabric, and preventing the non-uniform dispersion because of the short contact time of the dye and the fabric. In addition, the film can also prevent migration and sublimation of the dye in a drying and color development process, and the chromatic aberration of a warp direction, a weft direction and positive and negative faces of the fabric is prevented. The levelling agent is suitable for continuous padding-type dyeing and coating-type dyeing. Compared with vat dyeingin high-temperature and high-pressure, the energy consumption can be reduced, the dyeing efficiency is improved, and the product quality is improved, the color fastness of the fabric and the color uniformity reach a A-grade level stated by a national standard, so the vat dyeing in high-temperature and high-pressure can be possibly replaced by the continuous dyeing in normal pressure and temperature.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to a leveling agent suitable for continuous padding or coating dyeing of polyester fabrics at normal temperature and pressure, as well as its preparation method and application. Background technique [0002] The textile industry has made great contributions to my country's economic development, and the textile printing and dyeing industry employs more than 50 million people. Up to now, it has faced very serious problems of environmental pollution and energy shortage. The daily discharge of printing and dyeing wastewater reaches 6 million tons. Not only is the composition complex and changeable, but also the concentration is high, the chroma is deep, the COD value, Cr value are large, and it also contains a variety of toxic and harmful substances, which brings great impact on wastewater treatment and standard discharge. difficulty. At the same time, t...

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): D06P1/48C08B37/08D06P1/16D06P3/54
CPCD06P1/16D06P1/48D06P3/54C08B37/003D06P2001/0092
Inventor 陈艳珍王鹏陈精明曾桂香张仁海黄海彬
Owner SUZHOU TANGHUA NANO TECH
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