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Waterborne epoxy modified polyamine curing agent and waterborne epoxy anti-corrosion primer coating

A water-based epoxy and anti-corrosion primer technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of few mature products, high prices, and few water-based epoxy curing agents, avoiding storage Poor stability, easy production operation, good storage stability and good mechanical stability

Active Publication Date: 2016-09-21
青岛乐化科技有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In foreign countries, there are many studies on water-based epoxy curing agents, and there are also some industrialized products, but they are expensive.
In China, there are few researches on water-based epoxy curing agents, and there are few mature products

Method used

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  • Waterborne epoxy modified polyamine curing agent and waterborne epoxy anti-corrosion primer coating
  • Waterborne epoxy modified polyamine curing agent and waterborne epoxy anti-corrosion primer coating
  • Waterborne epoxy modified polyamine curing agent and waterborne epoxy anti-corrosion primer coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A water-based epoxy modified polyamine curing agent, which is prepared by the following steps:

[0031] a Select E51 epoxy resin, ethylene glycol butyl ether, polyetheramine, diethylene triamine and deionized water as the reaction materials, and divide E51 epoxy resin and ethylene glycol butyl ether into two parts respectively, and mark as the first part E51 epoxy resin, second E51 epoxy resin, first ethylene glycol butyl ether and second ethylene glycol butyl ether. The dosages of the E51 epoxy resin, ethylene glycol butyl ether, polyetheramine, diethylenetriamine and deionized water are 38-42 parts, ethylene glycol butyl ether 10.5-11.5 parts, and polyetheramine 6.0-6.5 parts. Parts, 13.5-14.5 parts of diethylenetriamine and 28-32 parts of deionized water, based on parts by weight. Among them, the amount of the first E51 epoxy resin is 17.5-20.5 parts, the amount of the second E51 epoxy resin is 20.5-21.5 parts, the amount of the first ethylene glycol butyl ether is 4.9...

Embodiment 2

[0042] A waterborne epoxy anticorrosive primer, which is composed of component A and component B, said component A is 32 parts by weight of EPON828 epoxy resin, and said component B is made of the following parts by weight Ingredients: 44 parts of waterborne epoxy modified polyamine curing agent prepared in Example 1, 12.3 parts of deionized water, 0.6 parts of dispersant, 0.1 parts of TEGO830 defoamer, 10 parts of titanium dioxide, 4 parts of iron oxide black, precipitation 15 parts of barium sulfate, 12 parts of aluminum tripolyphosphate, 0.3 parts of water-based bentonite, 0.6 parts of anti-flash rust additive, 0.4 parts of substrate wetting agent, 0.1 part of BYK-028 defoamer, 0.5 part of RM-2020 thickener , 0.1 part of RM-8W thickener.

[0043] The above-mentioned dispersant is TEGO755W dispersant; the anti-flash rust additive is Raybo 60 anti-flash rust additive; the substrate wetting agent is TEGOTWIN 4100 substrate wetting agent.

[0044] The preparation steps are as follo...

Embodiment 3

[0050] A water-based epoxy anticorrosive primer, which is composed of component A and component B, said component A is 30 parts by weight of 128 epoxy resin, and said component B is made of the following parts by weight Composition: 45 parts of waterborne epoxy modified polyamine curing agent prepared in Example 1, 15 parts of deionized water, 0.5 parts of dispersant, 0.1 parts of TEGO830 defoamer, 12 parts of titanium dioxide, 3 parts of iron oxide black, precipitation 12 parts of barium sulfate, 10 parts of aluminum tripolyphosphate, 0.5 part of water-based bentonite, 0.5 part of anti-flash rust additive, 0.3 part of substrate wetting agent, 0.1 part of BYK-028 defoamer, 0.6 part of RM-2020 thickener , 0.1 part of RM-8W thickener.

[0051] The above-mentioned dispersant is BYK-192 dispersant; the anti-flash rust additive is Raybo 60 anti-flash rust additive; the substrate wetting agent is TEGOTWIN 4100 substrate wetting agent.

[0052] The preparation steps are as follows:

[005...

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Abstract

The invention discloses a waterborne epoxy modified polyamine curing agent and a waterborne epoxy anti-corrosion primer coating. The curing agent is prepared through the following steps that a first part of E51 epoxy resin and a first part of butyl cellosolve are added into a three-mouth flask with a stirrer, a condenser pipe and a thermometer, the temperature is increased to 60 DEG C, polyether amine is dropwise added, the temperature is kept at 60 DEG C to 75 DEG C in the dropwise adding process, polyether amine is completely added within one hour, and then stirring is conducted for one hour; the temperature is decreased to 70 DEG C, diethylenetriamine is dropwise added and completely added within two hours, then a second part of E51 epoxy resin and a second part of butyl cellosolve are added, the temperature is kept at 70 DEG C to 75 DEG C, reacting is conducted for 3 h, the temperature is decreased to room temperature after it is detected that no primary amino exists, deionized water is added to dilute the mixture until the solid content is 60%, and then the waterborne epoxy modified polyamine curing agent is obtained. The prepared curing agent can directly emulsify epoxy resin, is good in storage stability and mechanical stability and has good application in a waterborne epoxy resin coating.

Description

Technical field [0001] The invention relates to a waterborne epoxy modified polyamine curing agent and a waterborne epoxy anticorrosive primer adopting the waterborne epoxy modified polyamine curing agent, and belongs to the field of waterborne epoxy industrial coatings. Background technique [0002] Volatile organic compounds (VOC) emitted into the air during the manufacturing, construction, drying, curing and film-forming processes of coatings are one of the important environmental pollutants. In China, with the increasing severity of air pollution, the regulations of government agencies and standards agencies have also become stricter on VOC indicators. In 2012, Guangdong Province took the lead in formulating the DB44 1024-2012 standard for water-based anticorrosive paint, and began to promote low-VOC container production. The 2013 draft of environmental labeling products strictly regulates the VOC limits of industrial coatings. Industries such as container, industrial prote...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/12C08G59/50
CPCC08G59/50C08G59/5006C08L2205/025C09D5/08C09D7/61C09D7/65C09D163/00C08L63/00C08K3/00C08K2003/2241C08K2003/3045C08K3/346
Inventor 姜显华王兆安张汝才曹绪梅
Owner 青岛乐化科技有限公司
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