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Epoxy ester resin capable of being dispersed in water and preparing method thereof

A technology of epoxy ester resin and epoxy resin, which is applied in the field of coatings, can solve the problems of reducing anti-corrosion performance, affecting storage stability, and affecting drying time, and achieves the effects of good hydrolysis resistance stability, low cost, and fast drying

Active Publication Date: 2018-01-05
山东奔腾漆业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the used fatty acid of the former is linolenic acid or oleic acid, dehydrated ricinoleic acid, cosolvent accounts for 20-30%, not only price is more expensive, and because there are more ester bonds, influence storage stability
The latter is due to the presence of surfactants, which will migrate to the surface of the paint film during the drying and film-forming process of the paint, affecting the drying time and reducing the anti-corrosion performance

Method used

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  • Epoxy ester resin capable of being dispersed in water and preparing method thereof
  • Epoxy ester resin capable of being dispersed in water and preparing method thereof
  • Epoxy ester resin capable of being dispersed in water and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Epoxy ester resin, comprises the component of following parts by weight: 20 parts of cardanol, 21.5 parts of 601 epoxy resins, 1.2 parts of soybean oil, 0.5 parts of phthalic anhydride, 3.3 parts of PEG600, 5.5 parts of Xylene, 48 parts of deionized water.

[0020] Put 20 parts of cardanol and 21.5 parts of 601 epoxy resin into a stainless steel reaction kettle, seal the feeding port, open the vent valve, pass nitrogen, and raise the temperature. When the temperature reaches 120°C, start stirring, and heat up to 210°C for 2.5 h, until the acid value is below 0.5mgKOH / g; add 1.2 parts of soy oil, 3.3 parts of PEG 600, and 0.5 parts of phthalic anhydride, raise the temperature to 220 ° C, keep it for 2.5 hours, until the acid value is below 0.7 mgKOH / g ; Cool down to 160°C and add 5.5 parts of xylene, continue to cool down to 60°C; maintain a constant temperature at this temperature, under stirring, gradually add 48 parts of deionized water and stir evenly, the process of...

Embodiment 2

[0022] Epoxy ester resin comprises the following components by weight: 22 parts of cardanol, 13 parts of 601 epoxy resin, 4 parts of 6101 epoxy resin, 1.4 parts of linoleic acid, 0.3 part of phthalic anhydride , 4 parts of PEG 800, 4.3 parts of mesitylene, 51 parts of deionized water.

[0023] Put 22 parts of cardanol, 13 parts of 601 epoxy resin, and 4 parts of 6101 epoxy resin into a stainless steel reaction kettle, seal the feeding port, open the vent valve, pass nitrogen, and raise the temperature. When the temperature reaches 120°C, start stirring , raise the temperature to 205°C and keep it warm for 3 hours until the acid value reaches below 0.5mgKOH / g; add 1.4 parts of linolenic acid, 4 parts of PEG 800, and 0.3 parts of phthalic anhydride, raise the temperature to 225°C, and keep it warm for 2 hours. The acid value is below 0.7mgKOH / g; cool down to 160°C, add 4.3 parts of trimethylbenzene, and continue to cool down to 50°C; keep a constant temperature at this temperatu...

Embodiment 3

[0025] Epoxy ester resin comprises the following components by weight: 18 parts of cardanol, 23 parts of 6101 epoxy resin, 1.2 parts of linoleic acid, 0.4 parts of phthalic anhydride, 3.2 parts of PEG600, 3 parts Xylene, 2.2 parts of trimethylbenzene, 49 parts of deionized water.

[0026] Put 18 parts of cardanol and 23 parts of 6101 epoxy resin into a stainless steel reaction kettle, seal the feeding port, open the vent valve, pass nitrogen, and raise the temperature. When the temperature reaches 120°C, start stirring, and heat up to 215°C for 2 hours. , until the acid value reaches below 0.5mgKOH / g; add 1.2 parts of linolenic acid, 3.2 parts of PEG 600, 0.4 parts of phthalic anhydride, raise the temperature to 215 ° C, keep warm for 3 hours, until the acid value is below 0.7mgKOH / g ; Cool down to 160°C, add 3 parts of xylene and 2.2 parts of trimethylbenzene, and continue to cool down to 70°C; maintain a constant temperature at this temperature, add 49 parts of deionized wat...

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Abstract

The invention provides epoxy ester resin capable of being dispersed in water. The epoxy ester resin is prepared from, by weight, 18-22 parts of cardanol, 17-24 parts of epoxy resin, 1.2-1.6 parts of fatty acid, 0.3-0.5 part of phthalic anhydride, 3.2-4.6 parts of polyethylene glycol, 4.3-6 parts of solvent and 47-52 parts of deionized water. The invention further provides a preparing method of theepoxy ester resin capable of being dispersed in water. The epoxy ester resin is low in VOC content, good in hydrolysis resistance stability, rapid in drying, high in hardness and good in corrosion resistance and other performance; cardanol is adopted to replace linoleic acid and dehydrated castor-oil fatty acid in traditional epoxy ester resin in the resin synthesis process, the drying time, hardness, adhesiveness, hydrolysis resistance stability and the like of a paint film are all greatly improved, and cost is greatly reduced; meanwhile, polyethylene glycol is introduced, the epoxy ester resin can be directly dispersed in water, polyatomic acid does not need to be introduced like traditional water-based epoxy ester resin, the water-based aim is achieved through amine neutralization, cost is low, and the process is simple.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a water-dispersible epoxy ester resin which can be oxidized and dried and used in the field of decorative and protective coatings, and also relates to a preparation method of the resin. Background technique [0002] Mountains of gold and silver are not as good as clear water and green mountains. With the increasingly stringent national environmental protection requirements, it is the general trend to develop water-based coatings to replace solvent-based coatings to reduce VOC emissions. [0003] Epoxy ester coatings have a wide range of uses, and are widely used in metal primers, electrical insulation coatings, anti-corrosion coatings for chemical plant equipment, automobiles, tractors and other machinery and equipment for primer protection and other fields. In recent years, water-based epoxy esters, epoxy ester emulsions, etc. have been widely reported and products are available: water-b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/16C08G59/62C08J3/03C09D163/10C09D5/08
CPCY02A50/30
Inventor 杨树民杨艾
Owner 山东奔腾漆业股份有限公司
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