Waterborne polyester with excellent water boiling resistance, and preparation method thereof

A water-based polyester, boiling-resistant technology, used in polyester coatings, coatings, etc., can solve the problems of destroying the stability of anionic dispersions, high cost of carbodiimide, and demulsification of polyester resins, and improve mechanical strength. and mechanical properties, improve stability and reliability, and improve the effect of flexibility

Inactive Publication Date: 2017-08-29
KITO CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbodiimide is not suitable for water-based dispersion systems. On the one hand, carbodiimide will react with hydroxyl groups during storage, and destroy the stability of anionic dispersions, resulting in the tendency of polyester resins to easily break in emulsified systems. situation; on the other hand, the cost of carbodiimide is relatively high, and it is difficult to apply it on a large scale in industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The water-based polyester with excellent boiling resistance of the present invention includes dimer alcohol, 1,3-propanediol, dimer acid, succinic acid, pentaerythritol, dimethylol propionic acid, E44 epoxy resin, triethylamine, the above group According to the parts by mass, they are: 20 parts of dimer alcohol, 20 parts of 1,3-propanediol, 20 parts of dimer acid, 20 parts of succinic acid, 10 parts of pentaerythritol, 10 parts of dimethylol propionic acid, E44 ring 10 parts of oxygen resin, 10 parts of triethylamine.

[0038] The preparation method of the water-based polyester with excellent boiling resistance of the present invention comprises the steps:

[0039] a) Under normal temperature and pressure, add polyol monomer, polyacid monomer, hydrophilic monomer, branching agent respectively into a reaction kettle equipped with a stirrer and stir until uniform, and then add esterification under continuous stirring Nitrogen is passed into the reactor at the side of the...

Embodiment 2

[0047] The water-based polyester with excellent boiling resistance of the present invention includes dimer alcohol, 1,3-propanediol, ethylene glycol, 1,4-cyclohexanedimethanol, 3-methyl-1,5-pentanediol, di Polyacid, succinic acid, maleic acid, aromatic dibasic acid, terephthalic acid, pentaerythritol, trimethylolpropane, glycerin, dimethylolpropionic acid, dimethylolbutyric acid, E44 ring Oxygen resin, glycidyl butyrate, glycidyl tertiary carbonate, triethylamine, dimethylethanolamine, diethanolamine, the above components are calculated in parts by mass: 40 parts of dimer alcohol, 10 parts of 1,3-propanediol Parts, 10 parts of ethylene glycol, 10 parts of 1,4-cyclohexanedimethanol, 10 parts of 3-methyl-1,5-pentanediol, 40 parts of dimer acid, 10 parts of succinic acid, butene 10 parts of diacid, 10 parts of aromatic dibasic acid, 10 parts of terephthalic acid, 10 parts of pentaerythritol, 10 parts of trimethylol propane, 10 parts of glycerin, 25 parts of dimethylol propionic a...

Embodiment 3

[0057] The water-based polyester with excellent boiling resistance of the present invention includes dimer alcohol, ethylene glycol, 1,4-cyclohexanedimethanol, 3-methyl-1,5-pentanediol, dimer acid, butene Diacids, aromatic dibasic acids, terephthalic acid, trimethylolpropane, glycerin, dimethylol butyric acid, glycidyl butyrate, glycidyl tertiary carbonate, dimethylethanolamine, diethanolamine, the above The components are calculated in parts by mass: 30 parts of dimer alcohol, 10 parts of ethylene glycol, 5 parts of 1,4-cyclohexanedimethanol, 5 parts of 3-methyl-1,5-pentanediol, 2 30 parts of polyacid, 10 parts of maleic acid, 5 parts of aromatic dibasic acid, 5 parts of terephthalic acid, 7 parts of trimethylolpropane, 8 parts of glycerin, 20 parts of dimethylol butyric acid, butyl 10 parts of glycidyl acid ester, 5 parts of glycidyl ester of tertiary carbonic acid, 6 parts of dimethylethanolamine, 7 parts of diethanolamine.

[0058] The preparation method of the water-base...

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PUM

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Abstract

The invention discloses waterborne polyester with excellent water boiling resistance. The waterborne polyester with excellent water boiling resistance comprises, by mass, 40 to 80 parts of a polyol monomer at least containing dimerdiol, 40 to 80 parts of a polyacid monomer at least containing dimer acid, 10 to 30 parts of a branching agent, 10 to 50 parts of a hydrophilic monomer, 10 to 30 parts of an epoxy modifier, and 10 to 20 parts of a neutralizer. The waterborne polyester possesses excellent water boiling resistance and mechanical properties.

Description

technical field [0001] The invention relates to a water-based polyester coating, in particular to a water-based polyester resistant to boiling and hydrolysis and a preparation method thereof. Background technique [0002] With the continuous development of my country's economy, the technology of industrial coatings is also becoming more and more perfect. Water-based polyester coating is a kind of industrial water-based coating, which has the advantages of good adhesion to metal, good gloss and solvent resistance, as well as excellent flexibility and tensile properties, so it is widely used in production equipment, Surface coating field of metal materials, etc. However, polyester resin itself has an ester bond structure, and its disadvantages in use are also very obvious. The specific performance is that the ester bond will be hydrolyzed when the coating film encounters water during storage or after film formation, resulting in a significant decrease in the performance of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G63/676C08G63/78C09D167/02C09D167/06
CPCC08G63/672C08G63/676C08G63/78C09D167/02C09D167/06
Inventor 王文陈能昌
Owner KITO CHEM CO LTD
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