Epoxy modified waterborne polyester resin and preparation method thereof

A water-based polyester resin and epoxy modification technology, applied in the field of chemical coatings, can solve the problems of limited application range, poor water resistance, slow water volatilization, etc., and achieve the effect of shortening reaction time, excellent performance and excellent adhesion

Pending Publication Date: 2021-08-24
JIANGSU HUALUN CHEM +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Water-based polyester has many excellent properties and also has a very broad market, but the current water-based polyester has the defects of slow water volatilization and poor water resistance, which greatly limits its application range

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An epoxy-modified water-based polyester resin, characterized in that it comprises the following components by weight: 20 parts of adipic acid, 25 parts of isophthalic acid, 5 parts of E-44 epoxy resin, trimethylolpropane 15 parts, 25 parts of dimethylol propionic acid (DMPA), 0.3 parts of monobutyl tin oxide (esterification catalyst), 12 parts of butyl glycol ether (BCS), 8 parts of propylene glycol methyl ether, N, N-di 3 parts of methyl ethanolamine (neutralizing agent).

[0027] The preparation method of the above-mentioned epoxy-modified water-based polyester resin comprises the following steps: first prepare a four-necked flask as a reaction vessel, and the four-necked flask is equipped with a stirring device, a thermometer, and ensures that the bottle is clean and free of impurities; then prepare the raw materials Components:

[0028] (1) adopt solvent method earlier with the adipic acid of 20 parts, the isophthalic acid of 25 parts, the E-44 epoxy resin of 5 par...

Embodiment 2

[0032] An epoxy-modified water-based polyester resin, characterized in that it comprises the following components by weight: 22 parts of adipic acid, 27 parts of isophthalic acid, 7 parts of E-44 epoxy resin, trimethylolpropane 17 parts, 27 parts of dimethylol propionic acid (DMPA), 0.3 parts of monobutyl tin oxide (esterification catalyst), 12 parts of butyl glycol ether (BCS), 8 parts of propylene glycol methyl ether, N, N-di 3 parts of methyl ethanolamine (neutralizing agent).

[0033] The preparation method of the above-mentioned epoxy-modified water-based polyester resin comprises the following steps: first prepare a four-necked flask as a reaction vessel, and the four-necked flask is equipped with a stirring device, a thermometer, and ensures that the bottle is clean and free of impurities; then prepare the raw materials Components:

[0034] (1) adopt solvent method earlier with the adipic acid of 22 parts, the isophthalic acid of 27 parts, the E-44 epoxy resin of 7 par...

Embodiment 3

[0038]An epoxy-modified water-based polyester resin, characterized in that it comprises the following components by weight: 24 parts of adipic acid, 29 parts of isophthalic acid, 9 parts of E-44 epoxy resin, trimethylolpropane 17 parts, 28 parts of dimethylol propionic acid (DMPA), 0.3 parts of monobutyl tin oxide (esterification catalyst), 14 parts of butyl glycol ether (BCS), 10 parts of propylene glycol methyl ether, N, N-di 5 parts of methyl ethanolamine (neutralizing agent).

[0039] The preparation method of the above-mentioned epoxy-modified water-based polyester resin comprises the following steps: first prepare a four-necked flask as a reaction vessel, and the four-necked flask is equipped with a stirring device, a thermometer, and ensures that the bottle is clean and free of impurities; then prepare the raw materials Components:

[0040] (1) adopt solvent method earlier with the adipic acid of 24 parts, the isophthalic acid of 29 parts, the E-44 epoxy resin of 9 par...

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 epoxy modified waterborne polyester resin and a preparation method thereof. The epoxy modified waterborne polyester resin comprises 18 to 24 parts of adipic acid, 25 to 30 parts of isophthalic acid, 5 to 10 parts of epoxy resin, 15 to 20 parts of trimethylolpropane, 25 to 30 parts of dimethylolpropionic acid, 0.3 to 0.5 part of an esterification catalyst, 12 to 15 parts of butyl cellosolve, 8 to 10 parts of propylene glycol monomethyl ether and 3 to 5 parts of a neutralizer. The preparation method comprises the steps: (1) adding adipic acid, isophthalic acid, epoxy resin, trimethylolpropane and an esterification catalyst into a reaction container filled with xylene, and heating to react until the acid value of a product is 60-80 mg KOH / g; (2) cooling, adding dimethylolpropionic acid to react until the acid value is 21-30 mg KOH / g, and removing xylene to obtain a prefabricated product; and (3) cooling, adding ethylene glycol monobutyl ether, propylene glycol monomethyl ether and the neutralizer, and uniformly stirring to obtain the epoxy modified waterborne polyester resin. The epoxy resin modified waterborne polyester resin disclosed by the invention has good water resistance, and waterborne polyester amino baking varnish prepared from the waterborne polyester resin disclosed by the invention has excellent adhesive force and flexibility and good hardness, water resistance and chemical resistance.

Description

technical field [0001] The invention relates to the technical field of chemical coatings, in particular to an epoxy-modified water-based polyester resin and a preparation method thereof. Background technique [0002] Water-based polyester has many excellent properties and has a very broad market, but the current water-based polyester has the defects of slow water volatilization and poor water resistance, which greatly limits its application range. Therefore, it is urgent to develop a water-based polyester material with good water resistance. Contents of the invention [0003] The object of the present invention is to provide a kind of epoxy resin modified water-based polyester resin and preparation method thereof; The water-based polyester amino baking varnish has the characteristics of excellent adhesion, flexibility, good hardness, water resistance and chemical resistance. [0004] The present invention is achieved through the following technical solutions: [0005] A...

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): C08G63/60C08G63/81
CPCC08G63/60C08G63/81
Inventor 吴昊谢颂雨李茉
Owner JIANGSU HUALUN CHEM
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