Water epoxy resin coating and preparing process thereof

A water-based epoxy resin and epoxy resin technology, used in epoxy resin coatings, coatings, latex paints, etc., can solve the problems of high cost, few reports on curing agents, and slow commercialization of water-based epoxy anti-corrosion coatings. , to achieve the effect of moderate response speed and guaranteed pot life

Inactive Publication Date: 2006-03-29
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the preparation of curing agents with emulsifying and curing functions is rarely reported.
At the same time, the commercialization of water-based epoxy anti-corrosio

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Synthesis of water-based epoxy curing agent

[0051] (a) capping

[0052] Equip the four-necked bottle with a stirring device, a thermometer and a reflux device. First add 145g triethylenetetramine (TETA, 1 mole), then add 130g butyl glycidyl ether in batches, control the reaction temperature to 60°C, and the reaction time is 2 hours, the product is light yellow viscous liquid.

[0053] (b) addition

[0054] Add 42g of 601 epoxy resin into the four-neck bottle, then add 30g of ethylene glycol monoethyl ether, and heat to 80°C to completely dissolve the resin. Cool the resin solution to about 40°C, then add 23g of the above-mentioned end-capped product, slowly raise the temperature, control and maintain the reaction temperature at about 90°C, and react for 2 hours.

[0055] (c) into salt

[0056] Add 5g of acetic acid into the reactant, maintain the temperature at about 90°C, and react for another hour.

[0057] (d) dissolve

[0058] Add 175g of water at 90°C a...

Embodiment 2

[0073] (1) Synthesis of water-based epoxy curing agent

[0074] (a) capped

[0075] Equip the four-necked bottle with a stirring device, a thermometer and a reflux device. First add 145g triethylenetetramine (TETA, 1 mole), then add 150g phenyl glycidyl ether in batches, control the reaction temperature to 55°C, and the reaction time is 150 minutes, the product is a light yellow viscous liquid.

[0076] (b) addition

[0077] Add 42g of 601 epoxy resin into the four-neck bottle, then add 30g of ethylene glycol monoethyl ether, and heat to 80°C to completely dissolve the resin. Cool the resin solution to about 40°C, then add 24.7g of the above-mentioned capped product, slowly raise the temperature, control and maintain the reaction temperature at about 90°C, and react for 2 hours.

[0078] (c) into salt

[0079] Add 10 g of acetic acid to the reactant, maintain the temperature at about 90° C., and react for another hour.

[0080] (d) dissolve

[0081] Add 150 g of water at...

Embodiment 3

[0096] (1) Synthesis of water-based epoxy curing agent

[0097] (a) capping

[0098] Equip the four-necked bottle with a stirring device, a thermometer and a reflux device. First add 145g triethylenetetramine (TETA, 1 mole), then add 306g alkyl glycidyl ether in batches, control the reaction temperature to 65°C, and the reaction time is 100 minutes, the product is light yellow viscous liquid.

[0099] (b) addition

[0100] Add 16g of 618 epoxy resin into the three-necked bottle, then add 8g of ethylene glycol monoethyl ether, and heat to 80°C to completely dissolve the resin. Cool the resin solution to about 40°C, then add 38g of the above-mentioned capped product, slowly raise the temperature, control and maintain the reaction temperature at about 95°C, and react for 1.5 hours.

[0101] (c) into salt

[0102] 5g of acetic acid was added to the reactant, the temperature was maintained at 95°C, and the reaction was continued for 50 minutes.

[0103] (d) dissolve

[0104] ...

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Abstract

A water epoxy resin paint is prepared from one of low-molecular liquid epoxy resin, the ether solution of epoxy resin and epoxy resin emulsion, and the solidifying agent prepared from polyvinylpolyamine through terminating, addition and salting. Its advantages are high hardness, adhesion and resistance to water and corrosion.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a water-based epoxy resin coating and a preparation method thereof. technical background [0002] Epoxy coatings are high-performance coatings with a wide range of applications. It has many advantages, including strong adhesion with various bases, high hardness of the coating, good water and chemical resistance, good wear resistance, etc. It can be used as ground coatings, metal anti-corrosion Rust primer, marine paint, etc. However, most epoxy resin coatings are solvent-based coatings at present, which contain a large amount of volatile organic compounds (VOC), which are toxic and flammable, thus causing harm to the environment and human body. With the increasing requirements for epoxy protection, there is an increasing call for VOC-reduced or even VOC-free coatings. [0003] In recent years, the research on waterborne epoxy resin anticorrosion coatings ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/02
Inventor 任天斌黄艳霞顾国芳任杰
Owner TONGJI UNIV
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