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Waterborne polyester resin and preparation method thereof

A technology of water-based polyester resin and deionized water, applied in polyester coatings, coatings, etc., can solve the problem of poor hydrolysis resistance of trimellitic acid half-esterification, poor water-based insulation of products, and affecting the storage of polyester aqueous dispersions Stability and other issues, to achieve the effect of strong adhesion, good wear resistance and high fullness

Inactive Publication Date: 2017-06-27
滁州市全丰物资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Introducing trimellitic anhydride as a self-emulsifying functional group on the main chain of polyester is a common method, but the half-esterification of trimellitic acid has poor hydrolysis resistance, which will affect the storage stability of polyester aqueous dispersions and the prepared products have poor water-based insulation Wait

Method used

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  • Waterborne polyester resin and preparation method thereof

Examples

Experimental program
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Effect test

specific Embodiment 1

[0020] like figure 1 As shown, it is a kind of water-based polyester resin described in this embodiment, including: polyhydric alcohol, polybasic acid, and the polyhydric alcohol includes trimethylolpropane 8-12%, neopentyl glycol 12-24%, ethyl alcohol Glycol 6-12%, propylene glycol 8-12%, the polybasic acid includes purified terephthalic acid 5-15%, isophthalic acid 12-24%, phthalic acid 6-12%, trimellitic anhydride 10-18% %, hexahydrophthalic acid 6-12%, maleic anhydride 10-20%, adipic acid 5-10%;

[0021] The water-based polyester resin also includes 0.1-0.3% of p-methoxyphenol, 6-24% of ethylene glycol monobutyl ether, 8-16% of dimethylethanolamine, and 60-100% of deionized water.

[0022] Specifically, the water-based polyester resin includes polyols and polybasic acids, and the polyols include 10-12% of trimethylolpropane, 16-24% of neopentyl glycol, 8-12% of ethylene glycol, and 10% of propylene glycol. ~12%; the polybasic acid includes 8~15% of purified terephthalic ...

specific Embodiment 2

[0032] The water-based polyester resin of the present invention includes: polyhydric alcohol and polybasic acid, and the polyhydric alcohol includes 8-12% of trimethylolpropane, 12-24% of neopentyl glycol, 6-12% of ethylene glycol, propylene glycol 8-12%, the polybasic acid includes 5-15% of purified terephthalic acid, 12-24% of isophthalic acid, 6-12% of phthalic acid, 10-18% of trimellitic anhydride, hexahydrophthalic acid 6~12%, maleic anhydride 10~20%, adipic acid 5~10%;

[0033] The water-based polyester resin also includes 0.1-0.3% of p-methoxyphenol, 6-24% of ethylene glycol monobutyl ether, 8-16% of dimethylethanolamine, and 60-100% of deionized water.

[0034] Specifically, the water-based polyester resin includes polyols and polybasic acids, and the polyols include 8-10% of trimethylolpropane, 12-20% of neopentyl glycol, 6-10% of ethylene glycol, and 8% of propylene glycol. ~10%; the polybasic acid includes 5~12% of purified terephthalic acid, 12~20% of isophthalic ...

specific Embodiment 3

[0044] The water-based polyester resin of the present invention includes: polyhydric alcohol and polybasic acid, and the polyhydric alcohol includes 8-12% of trimethylolpropane, 12-24% of neopentyl glycol, 6-12% of ethylene glycol, propylene glycol 8-12%, the polybasic acid includes 5-15% of purified terephthalic acid, 12-24% of isophthalic acid, 6-12% of phthalic acid, 10-18% of trimellitic anhydride, hexahydrophthalic acid 6~12%, maleic anhydride 10~20%, adipic acid 5~10%;

[0045] The water-based polyester resin also includes 0.1-0.3% of p-methoxyphenol, 6-24% of ethylene glycol monobutyl ether, 8-16% of dimethylethanolamine, and 60-100% of deionized water.

[0046] Specifically, the water-based polyester resin includes: polyols, polybasic acids, and the polyols include 10% trimethylolpropane, 18% neopentyl glycol, 9% ethylene glycol, and 10% propylene glycol; Polyacids include 10% purified terephthalic acid, 18% isophthalic acid, 9% phthalic acid, 14% trimellitic anhydrid...

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Abstract

The invention discloses waterborne polyester resin, comprising polyols and polyacids; the polyols include 8-12% of trimethylol propane, 12-24% of neopentyl glycol, 6-12% of ethylene glycol, and 8-12% of propylene glycol; the polyacids include 5-15% of purified terephthalic acid, 12-24% of isophthalic acid, 6-12% of phthalic acid, 10-18% of trimellitic anhydride, 6-12% of hexahydro-phthalic acid, 10-20% of maleic anhydride, and 5-10% of adipic acid; the waterborne polyester resin also comprises 0.1-0.3% of p-methoxyphenol, 6-24% of ethylene glycol butyl ether, 8-16% of dimethylethanolamine, and 60-100% of deionized water. The waterborne polyester resin can gain improved hydrolysis resistance, water dispersibility and storage stability, has improved stability of polyester main chain hydrolysis and is widely applicable to waterborne insulating devices, the defects of the prior art can be overcome, and the requirement on actual use can be met.

Description

technical field [0001] The invention relates to a water-based polyester resin and a preparation method thereof, belonging to the technical field of synthetic resins. Background technique [0002] In recent years, water-based environmentally friendly coatings, including high-solid and solvent-free coatings, water-based coatings, powder coatings and radiation-cured coatings, have achieved rapid development. Water-based polyester coating, one of the representative water-based coatings, has the characteristics of high gloss, strong adhesion, high fullness, and excellent impact resistance. It can be formulated with water-soluble amino resin to make water-based baking paint, and can also be used Hydrophilic polyisocyanate is formulated into water-based wood coatings cured at room temperature, so it is widely used in the protection and decoration of metal and wood surfaces; because polyester is easy to hydrolyze, the application of water-based polyester is limited to a certain exte...

Claims

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Application Information

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IPC IPC(8): C08G63/52C08L67/06C09D167/06
CPCC08G63/52C08L67/06C08L2201/54C08L2203/20C09D167/06
Inventor 戈建伦
Owner 滁州市全丰物资有限公司