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Water-borne epoxy resin curing agent

A water-based epoxy resin and epoxy resin technology, applied in the epoxy resin field, can solve the problems of strict ratio, high volatility, fast curing, etc., and achieve good curing performance, good water dispersibility, and VOC content. Effect

Inactive Publication Date: 2016-02-17
太仓康盛化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among epoxy resin curing agents, amine curing agents have many types, large dosage, and wide application. However, general amine curing agents are highly volatile, highly toxic, fast curing, too strict in proportion, and even absorb carbon dioxide at room temperature. reduce the effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation steps of described aqueous epoxy resin curing agent are as follows:

[0018] a. Addition: at room temperature, mix the polyethylene polyamine and the bisphenol A epoxy resin in the formula amount for addition reaction, the reaction temperature is 50-60°C, and the reaction time is 1-2h;

[0019] b, end-capping: add the described ethylene glycol ethyl ether, butyl glycidyl ether, phenyl glycidyl ether, benzyl glycidyl ether and alkyl glycidyl ether of formula amount to the adduct obtained in step a to carry out Capping reaction, the reaction temperature is 80-90°C, and the reaction time is 1-2h;

[0020] c, salt formation: add the acetic acid of prescription amount to the capping product that step b makes, react again 0.5-1h;

[0021] d. Dissolution: Add appropriate amount of water to dilute at 90°C to dissolve the curing agent in water to obtain a water-based epoxy resin curing agent.

[0022] Wherein, the polyethylene polyamine is one of diethylenetria...

Embodiment 1

[0025] A water-based epoxy resin curing agent, consisting of the following components: 48 parts by mass of polyethylene polyamine, 45 parts by mass of bisphenol A epoxy resin, 2.5 parts by mass of ethylene glycol ether, 1 part by mass of butyl glycidyl ether, 1 mass part of phenyl glycidyl ether, 1 mass part of benzyl glycidyl ether, 1 mass part of alkyl glycidyl ether and 0.5 mass part of acetic acid;

[0026] The preparation steps of described aqueous epoxy resin curing agent are as follows:

[0027] a. Addition: at room temperature, the triethylenetetramine and the bisphenol A epoxy resin are mixed for addition reaction, the reaction temperature is 50°C, and the reaction time is 1.5h;

[0028] b. Capping: heat the adduct obtained in step a to 50°C in the reaction vessel, and then add the ethylene glycol ethyl ether, butyl glycidyl ether, phenyl glycidyl ether, benzyl glycidyl ether Glyceryl ether and alkyl glycidyl ether are subjected to capping reaction, the reaction temp...

Embodiment 2

[0032] A water-based epoxy resin curing agent, consisting of the following components: 53 parts by mass of polyethylene polyamine, 40 parts by mass of bisphenol A epoxy resin, 2.5 parts by mass of ethylene glycol ether, 1 part by mass of butyl glycidyl ether, 1 mass part of phenyl glycidyl ether, 1 mass part of benzyl glycidyl ether, 1 mass part of alkyl glycidyl ether and 0.5 mass part of acetic acid;

[0033] The preparation steps of described aqueous epoxy resin curing agent are as follows:

[0034] a. Addition: at room temperature, mix the diethylenetriamine and the bisphenol A epoxy resin in the formulated amount for addition reaction, the reaction temperature is 55°C, and the reaction time is 1.5h;

[0035] b. Capping: heat the adduct obtained in step a to 50°C in the reaction vessel, and then add the ethylene glycol ethyl ether, butyl glycidyl ether, phenyl glycidyl ether, and benzyl glycidyl ether in the formula amount Glyceryl ether and alkyl glycidyl ether are subje...

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PUM

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Abstract

The invention discloses a water-borne epoxy resin curing agent. The water-borne epoxy resin curing agent is prepared from, by mass, 43-48 parts of polyethylene polyamine, 40-45 parts of bisphenol A epoxy resin, 2.5 parts of glycol ether, 1 part of butyl glycidyl ether, 1 part of phenyl glycidyl ether, 1 part of benzyl glycidyl ether, 1 part of alkyl glycidyl ether and 0.5 part of acetic acid. The water-borne epoxy resin curing agent is prepared through the steps of a, addition, b, end sealing, c, salifying, and d, dissolution. In this way, the water-borne epoxy resin curing agent has good water solubility and curing performance, and the VOC content meets the environment protection requirement.

Description

technical field [0001] The invention relates to the field of epoxy resin, in particular to a water-based epoxy resin curing agent. Background technique [0002] Epoxy resin coatings have the characteristics of high hardness, good wear resistance, high adhesion and excellent chemical resistance, and are widely used in the field of coating. With the continuous improvement of people's awareness of environmental protection, many countries have successively promulgated environmental regulations restricting volatile organic solvents (VOC). important. [0003] Among epoxy resin curing agents, amine curing agents have many types, large dosage, and wide application. However, general amine curing agents are highly volatile, highly toxic, fast curing, too strict in proportion, and even absorb carbon dioxide at room temperature. reduce the effect. The water-based epoxy curing agent is obtained by modifying the traditional amine curing agent, which overcomes the shortcomings of the un...

Claims

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Application Information

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IPC IPC(8): C08G59/50
CPCC08G59/5033
Inventor 张敏
Owner 太仓康盛化工有限公司
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