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

Water-based unsaturated polyester as well as preparation method and application thereof

An unsaturated, water-based technology, used in polyester coatings, coatings, anti-corrosion coatings, etc., can solve problems such as failure to meet green environmental protection requirements, low biomass content, poor flexibility, etc. The effect of comprehensive performance and high flexibility

Pending Publication Date: 2021-11-30
GUANGZHOU UNIVERSITY
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The related technology discloses a preparation method of UV-curable waterborne epoxy itaconic acid resin, which improves the flexibility of the coating while maintaining the hardness, and effectively solves the brittleness problem of the coating, but the content of itaconic acid in the resin is relatively high. Low, accounting for only 17% to 26%, the biomass content is low, and the main raw material components are still mostly petroleum resources
[0007] In short, most of the water-based coating products based on unsaturated polyester in the existing market are prepared from petroleum resources, which cannot meet the requirements of green environmental protection, while the products synthesized from biomass have darker color, poor flexibility, and biomass Problems such as low content

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
  • Water-based unsaturated polyester as well as preparation method and application thereof
  • Water-based unsaturated polyester as well as preparation method and application thereof
  • Water-based unsaturated polyester as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Weigh 11.817g of 1,6-hexanediol, 2.306g of citric acid and 14.051g of itaconic acid into a 250ml four-neck flask, and add 0.103g of p-toluenesulfonic acid and 0.141g of p-hydroxybenzoic acid The ether was connected with a water separator, a stirrer and a circulating condensing device, and the temperature was raised to 140° C. under the protection of nitrogen and vigorously stirred for 5 hours to carry out the esterification reaction.

[0056] (2) After the esterification reaction, 0.141 g of dibutyltin dilaurate was weighed and added into the reactor, the pressure was reduced to -0.095Mpa and the polycondensation reaction was carried out at 140° C. for 2 hours.

[0057] (3) After the polycondensation reaction, cool to 50°C, add triethylamine according to the calculated acid value, make the pH of the target product 7, add an appropriate amount of water to adjust the solid content of the product to 50%, and stir vigorously for 1 h. Finally, photoinitiator 1173 was add...

Embodiment 2

[0059] (1) Weigh 11.817g of 1,6-hexanediol, 3.458g of citric acid and 13.270g of itaconic acid into a 250ml four-necked flask, and add 0.103g of p-toluenesulfonic acid and 0.143g of p-hydroxybenzoic acid The ether was connected with a water separator, a stirrer and a circulating condensing device, and the temperature was raised to 140° C. under the protection of nitrogen and vigorously stirred for 5 hours to carry out the esterification reaction.

[0060] (2) After the esterification reaction, 0.143g of dibutyltin dilaurate was weighed and added into the reactor, the pressure was reduced to -0.095Mpa and the polycondensation reaction was carried out at 140°C for 2h.

[0061] (3) After the polycondensation reaction, cool to 50°C, add triethylamine according to the calculated acid value, make the pH of the target product 7, add an appropriate amount of water to adjust the solid content of the product to 50%, and stir vigorously for 1 h. Finally, photoinitiator 1173 was added and...

Embodiment 3

[0063] (1) Weigh 11.817g of 1,6-hexanediol, 4.035g of citric acid and 12.880g of itaconic acid into a 250ml four-necked flask, and add 0.103g of p-toluenesulfonic acid and 0.144g of p-hydroxybenzoic acid The ether was connected with a water separator, a stirrer and a circulating condensing device, and the temperature was raised to 140° C. under the protection of nitrogen and vigorously stirred for 5 hours to carry out the esterification reaction.

[0064] (2) After the esterification reaction, 0.144g of dibutyltin dilaurate was weighed and added into the reactor, the pressure was reduced to -0.095Mpa and the polycondensation reaction was carried out at 140°C for 2h.

[0065] (3) After the polycondensation reaction, cool to 50°C, add triethylamine according to the calculated acid value, make the pH of the target product 7, add an appropriate amount of water to adjust the solid content of the product to 50%, and stir vigorously for 1 h. Finally, photoinitiator 1173 was added and...

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 discloses water-based unsaturated polyester as well as a preparation method and application thereof. The water-based unsaturated polyester contains a structural unit I derived from unsaturated dibasic acid, a structural unit II derived from hydroxyl-containing aliphatic dibasic acid and / or hydroxyl-containing aliphatic tribasic acid and a structural unit III derived from polyhydric alcohol. The water-based unsaturated polyester disclosed by the invention has excellent water stability, high adhesive force and high flexibility, is simple in preparation process, does not contain an organic solvent, is green and environment-friendly, can be used as a water-based environment-friendly UV coating, and has a wide market prospect.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a water-based unsaturated polyester and its preparation method and application. Background technique [0002] Organic coatings are an essential part of modern chemistry. However, almost all traditional coating systems inevitably contain large amounts of organic solvents or other volatiles. In recent years, with the improvement of people's awareness of environmental protection and the increasingly stringent environmental regulations, traditional solvent-based coatings have gradually been replaced by environmentally friendly coatings. At the same time, because petroleum resources are unsustainable and non-renewable resources, with the increasing depletion of petroleum resources, the cost of polymer coatings in petroleum resources will inevitably increase. Under the pressure of protecting the environment, reducing production costs and saving petroleum resources, Industry...

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): C08G63/60C08G63/52C09D167/06C09D5/08
CPCC08G63/60C08G63/52C09D167/06C09D5/08
Inventor 韦星船何智瀚
Owner GUANGZHOU UNIVERSITY
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