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

Waterborne polyurethane dispersing agent and waterborne color paste containing same

A water-based polyurethane and dispersant technology, applied in the direction of pigment paste, etc., can solve the problems that the color paste is prone to delamination or floating color, and the dispersant cannot achieve the dispersing effect, so as to achieve the effect of strong dispersing ability and good stability

Inactive Publication Date: 2020-05-08
TRENDVISION TECH(ZHUHAI) CO LTD
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current dispersant still cannot achieve a good dispersion effect, and the color paste is prone to delamination or color floating

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
  • Waterborne polyurethane dispersing agent and waterborne color paste containing same
  • Waterborne polyurethane dispersing agent and waterborne color paste containing same
  • Waterborne polyurethane dispersing agent and waterborne color paste containing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Nitrogen gas was passed into a dry and clean four-necked flask equipped with a stirring and condensing reflux device, and sulfolane 200g, polycarbonate diol UH-50 148g, 2,2-dimethylolpropionic acid (DMPA ) 96g, tetrabutyl titanate 10g, poured into the reactor, stirred evenly and heated, the temperature was controlled at 60°C. Then add 262g of tetramethyl-m-xylylene diisocyanate TMXDI into the reaction flask for reaction, and use the slow drop method to add slowly and uniformly with a peristaltic pump. The addition time is 90min, and the reaction temperature is 60°C; after the addition, the temperature rises To 100°C, stir evenly until the concentration of isocyanate group (%NCO) is lower than 1.5%, then cool down to 60°C. Then, 30 g of triethylamine TEA was slowly added into the reaction flask, and the addition was completed in 5 minutes, and stirred evenly at 60° C. for 1 hour to obtain a dispersant prepolymer. Finally, add 133.2g of 3% potassium hydroxide aqueous sol...

Embodiment 2

[0041]In a dry, clean four-necked flask with a stirring and condensing reflux device, nitrogen gas was introduced, and 150 g of dimethyl sulfoxide, 68 g of polycarbonate diol UH-100, and dimethylol butyric acid (DMBA ) 52g, dibutyltin dilaurate 0.01g, pour into the reactor, stir evenly and heat, control temperature 60 ℃. Then add 126g of dicyclohexylmethane diisocyanate HMDI into the reaction flask for reaction. Slowly drop the method and use a peristaltic pump to add slowly and uniformly. The addition time is 60min, and the reaction temperature is 60°C; after the addition, the temperature is raised to 100°C. Stir evenly until the concentration of isocyanate group (%NCO) is lower than 1.5%, and cool down to 60°C. Then add 16.7g of diethylamine DEA into the reaction flask, finish adding in 5 minutes, and stir evenly at 60°C for 1 hour to obtain a dispersant prepolymer. Finally, add 187.3g of 3% sodium hydroxide aqueous solution to the above-mentioned dispersed prepolymer for 1...

Embodiment 3

[0043] In a dry and clean four-necked flask equipped with a stirring and condensing reflux device, nitrogen gas was introduced, and 100 g of dimethyl sulfoxide, 102 g of polytetramethylene ether glycol TETRATHANE 650, and 2,2-dihydroxy 86.9g of methacrylic acid (DMPA) and 1g of stannous octoate were poured into the reactor, stirred evenly and heated, and the temperature was controlled at 60°C. Then, 152g of m-xylylene dimethyl isocyanate MXDI was added into the reaction flask for reaction, and the reaction was carried out by slowly dropping The way of adding is to use a peristaltic pump to add slowly and evenly, the adding time is 70min, and the reaction temperature is 60°C; after the addition, the temperature is raised to 100°C, and the mixture is stirred evenly until the concentration of isocyanate (%NCO) is lower than 1.5%. Cool down to 60°C. Then add 6.8 g of bis(2-methoxyethyl)amine BMEA into the reaction flask, finish adding in 5 minutes, and stir evenly at 60° C. for 1 ...

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 belongs to the field of materials, and discloses a waterborne polyurethane dispersing agent which is mainly prepared by reaction of raw materials including a polyglycol monomer, an isocyanate monomer, an emulsifier, a solvent, a catalyst and an end-capping reagent. The waterborne polyurethane dispersing agent has strong adsorption capacity on the surface of an organic pigment, is noteasy to fall off or replace, can effectively reduce the surface energy of the pigment, and has strong dispersion stability, and the waterborne color paste prepared from the waterborne polyurethane dispersing agent has good stability.

Description

technical field [0001] The invention belongs to the field of materials, in particular to a water-based polyurethane dispersant and a water-based color paste containing the same. Background technique [0002] Organic pigments are widely used in coatings, inks, inkjet inks, etc. The structures of common organic pigment toners are mostly azos, phthalocyanines, anthraquinones, indigos, quinacridones, polycyclics such as dioxazines, and aromatic methanes. These organic pigments generally have lipophilic benzene ring or heterocyclic structure, and the surface contains active amine groups, amide groups, carboxylic acid groups, ester groups, hydroxyl groups, etc. Because the intermolecular attraction is strong, it is easy to reunite and it is difficult to disperse. Therefore, the organic pigment is not easy to disperse stably in the solution phase, and the toner is easy to precipitate and aggregate to cause sedimentation, which makes the organic pigment paste unstable, easy to laye...

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): C08G18/66C08G18/34C08G18/44C08G18/48C09D17/00
CPCC08G18/348C08G18/44C08G18/4854C08G18/6659C08G18/6692C09D17/003
Inventor 李鑫张云杰刘明辉
Owner TRENDVISION TECH(ZHUHAI) CO LTD
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