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Waterborne epoxy modified polyester resin and preparation method thereof

A modified polyester and water-based epoxy technology, applied in the field of coatings, can solve the problems of lack of water-based epoxy modified polyester resin preparation method, poor adhesion of ordinary polyester resin, high VOC content, and achieve good fullness, The effect of high hardness and low VOC content

Inactive Publication Date: 2017-10-24
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing ordinary polyester resin has disadvantages such as poor adhesion, low hardness, poor water resistance, poor fullness, and high VOC content.
[0004] At present, there is a lack of a water-based epoxy-modified polyester resin with good adhesion and a preparation method thereof

Method used

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  • Waterborne epoxy modified polyester resin and preparation method thereof
  • Waterborne epoxy modified polyester resin and preparation method thereof
  • Waterborne epoxy modified polyester resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of waterborne epoxy modified polyester resin of the present invention, described waterborne epoxy modified polyester resin is made up of polyhydric alcohol, polybasic acid, esterification catalyst, modifier, environment-friendly diluent, calculated by weight parts Contains the following components:

[0031]

[0032] The polyhydric alcohol is a combination of two types of neopentyl glycol and trimethylolpropane. The polybasic acid is a combination of two types of isophthalic acid and adipic acid. The epoxy resin is epoxy resin E20; the environmentally friendly diluent is ethylene glycol monobutyl ether. The esterification catalyst is dibutyltin oxide.

[0033] The preparation method of waterborne epoxy-modified polyester resin of the present invention, comprises the steps:

[0034] (1) Weigh each of the components, put the polybasic acid, polyhydric alcohol and esterification catalyst into a reactor filled with nitrogen, slowly heat up to 140°C, start stirri...

Embodiment 2

[0039] The difference between embodiment 2 and embodiment 1 is:

[0040] A kind of waterborne epoxy modified polyester resin of the present invention, described waterborne epoxy modified polyester resin is made up of polyhydric alcohol, polybasic acid, esterification catalyst, modifier, environment-friendly diluent, calculated by weight parts Contains the following components:

[0041]

[0042] Described polyhydric alcohol is neopentyl glycol. The polybasic acid is trimellitic anhydride. The environment-friendly diluent is a combination of four kinds of propylene glycol methyl ether, n-butanol, isopropanol and sec-butanol.

[0043] The preparation method of waterborne epoxy-modified polyester resin of the present invention, comprises the steps:

[0044] In step (1), weigh each of the components, put the polybasic acid, polyhydric alcohol and esterification catalyst into a reactor filled with nitrogen, slowly raise the temperature to 140°C, and start stirring for 10 minut...

Embodiment 3

[0048] The difference between embodiment 3 and embodiment 1 is:

[0049] A kind of waterborne epoxy modified polyester resin of the present invention, described waterborne epoxy modified polyester resin is made up of polyhydric alcohol, polybasic acid, esterification catalyst, modifier, environment-friendly diluent, calculated by weight parts Contains the following components:

[0050]

[0051]

[0052] Described polyhydric alcohol is trimethylol propane. The polybasic acid is a combination of three types of isophthalic acid, adipic acid and trimellitic anhydride. The environmentally friendly diluent is a combination of three of ethylene glycol monobutyl ether, propylene glycol methyl ether and sec-butanol.

[0053] The preparation method of waterborne epoxy-modified polyester resin of the present invention, comprises the steps:

[0054] In step (1), weigh each of the components, put the polybasic acid, polyhydric alcohol and esterification catalyst into a reactor fil...

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PUM

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Abstract

The invention discloses waterborne epoxy modified polyester resin and a preparation method thereof. The waterborne epoxy modified polyester resin is prepared from the following components in parts by weight: 23-42 parts of polyol, 35-59 parts of polyacid, 0.03-0.1 part of esterification catalyst, 2-10 parts of modifying agent and 15-35 parts of environment-friendly diluent. Waterborne amino baking paint prepared from the waterborne epoxy modified polyester resin has the characteristics of being good in adhesion force, high in fullness and hardness, good in water resistance, and the like.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based epoxy-modified polyester resin and a preparation method thereof. Background technique [0002] With the continuous improvement of people's awareness of environmental protection, water-based paints have been used more and more widely. Traditional paints have great harm to people's health and the environment during production and use. The promotion of water-based paints can reduce VOC emissions. , waste generation, and reduce worker exposure to toxic emissions. It also plays a certain role in promoting the governance of smog. It is reported that during the "13th Five-Year Plan" period, the country will strengthen the control of the total amount of volatile organic compounds (VOC), and carry out coordinated emission reduction of nitrogen oxides and VOC. Water-based epoxy-modified polyester resins are mainly used in industries such as home appliances, automobiles, ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08G63/20C09D167/00C09D167/02C09D7/00
CPCC08G63/916C08G63/20C08G63/914C09D167/00C09D167/02
Inventor 刘东李春雨郭晓猛郑奇董立志祁艳东程璐周瑜楚会来
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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