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

Special high-performance carboxyl-terminated polyester resin for powder coating and synthesis method thereof

A carboxyl-terminated polyester and powder coating technology, applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of high curing temperature, long baking time, long time period, etc., to ensure impact performance, The effect of shortening the gel time and improving the weather resistance

Inactive Publication Date: 2020-10-09
ANHUI MEIJIA NEW MATERIAL
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a special high-performance carboxyl-terminated polyester resin for powder coatings, which aims to improve the existing outdoor powder coatings prepared with TGIC as a curing agent. The curing conditions are all above 200 ° C × 10 minutes to The curing condition of indoor powder coatings with epoxy resin as curing agent is 180°C×10 minutes. The curing temperature is too high, resulting in a lot of waste of energy, and long baking time, which makes the production time cycle longer and increases the cost of equipment and manpower. The problem

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
  • Special high-performance carboxyl-terminated polyester resin for powder coating and synthesis method thereof
  • Special high-performance carboxyl-terminated polyester resin for powder coating and synthesis method thereof
  • Special high-performance carboxyl-terminated polyester resin for powder coating and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] Example: A high-performance carboxyl-terminated polyester resin for powder coatings, the acid value of the indoor type is 70.7mgKOH / g, the melt viscosity is 3500mPa.s, the softening point is 106°C, the number-average molecular weight of the resin is 3209, and the weight-average The molecular weight is 5425, the molecular weight distribution is 1.53, the glass transition temperature of the resin is 53.52°C, the acid value outdoor type is 35.6mgKOH / g, the melt viscosity is 5500mPa.s, the softening point is 116°C, the number average molecular weight of the resin is 5506, and the weight The average molecular weight is 8356, the molecular weight distribution is 1.48, and the glass transition temperature of the resin is 63.46°C, which is obtained by the melting polycondensation reaction of the following raw materials in parts by weight:

[0035] Polyols include neopentyl glycol, ethylene glycol, and also 2-methyl-1,3-propanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol, 2-bu...

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
softening pointaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
softening pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses special high-performance carboxyl-terminated polyester resin for a powder coating and a synthesis method thereof. The invention solves the problems that in the prior art, the outdoor powder coating, which is prepared by taking TGIC as a curing agent, has the curing condition of 200 DEG C * 10 minutes or above, and the curing condition of the indoor powder coating taking theepoxy resin as the curing agent is 180 DEG C * 10 minutes, wherein the excessive high curing temperature may cause serious waste of energy resources and long baking time, and further causes long production period and increase on equipment and manpower cost. In the invention, the polyester resin monomer for preparing the powder coating is improved and optimized, so that the polyester resin with good stability, the powder coating can be cured at a relatively low temperature, and the application range of the powder coating can be expanded through low-temperature curing; meanwhile, the processingefficiency can be improved, the production cost is greatly reduced, and the problem that the powder coating synthesized through traditional polyester resin is prone to causing a large amount of energy waste is solved.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a special high-performance carboxyl-terminated polyester resin for powder coatings and a synthesis method thereof. Background technique [0002] Thermosetting powder coatings are widely used at home and abroad because of their pollution-free, resource-saving and high-efficiency characteristics. Performance requirements are getting higher and higher. Polyester resins for powder coatings are saturated resins. According to their terminal functional groups, they can be roughly classified into two types: hydroxyl-terminated polyester resins and carboxyl-terminated polyester resins. The former has a hydroxyl value between 30 Between -300mgKOH / g, caprolactam-blocked isocyanate is generally used as the curing agent of its powder coating, which can achieve excellent weather resistance and corrosion resistance, and has a very broad prospect. The powder coating based on carboxyl-ter...

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): C08G63/672C08G63/78C09D167/06C09D163/00C09D5/03C09D7/61C09D7/63
CPCC08G63/672C08G63/78C08G2150/20C08K2003/2241C08K2003/3045C09D5/033C09D167/06C08L63/00C08K13/02C08K3/22C08K3/30C08K5/50C08K5/526
Inventor 王方银
Owner ANHUI MEIJIA NEW MATERIAL
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