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Novel epoxy curing agent and synthesis method thereof

A technology of epoxy curing agent and synthesis method, applied in chemical instruments and methods, preparation of organic compounds, preparation of aminohydroxy compounds, etc., can solve the problems of high exothermic peak, violent reaction, short pot life, etc. The effect of low peak temperature, simple synthesis process and low reactivity

Inactive Publication Date: 2014-02-26
HUNAN SHENLI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When monoethanolamine is used alone as an epoxy curing agent, because of its high curing reactivity, the reaction is violent during the curing reaction, the pot life is short and the exothermic peak is high, and the product performance after curing is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Weigh 122.2g of monoethanolamine and add it into a three-necked bottle, start stirring, control the speed at 100-120 rpm, slowly add 86.1g of butadiene dioxide dropwise, control the reaction temperature at 50-60°C, and control the dropwise reaction time for 4 hours , after the dropwise addition, raise the temperature to 75-80°C, continue to stir and react for 2 hours, lower the temperature to 40-45°C, and perform the discharge test;

[0012] The test data is shown in the table below:

[0013] Test items Example 1 Exterior light yellow transparent liquid Amine value (mgKOH / g) 294.8 Viscosity (25℃, mPa·s) 18500

Embodiment 2

[0015] Weigh 122.2g of monoethanolamine and add it into a three-necked bottle, start stirring, control the speed at 100-120 rpm, slowly drop in 68.9g of butadiene dioxide, control the reaction temperature: 50-60°C, and control the dropwise reaction time for 3 Hours, the dropwise addition is completed, the temperature is raised to 75-80°C, and the stirring reaction is continued for 2 hours, the temperature is lowered to 40-45°C, and the material is tested;

[0016] The test data is shown in the table below:

[0017] Test items Example 2 Exterior light yellow transparent liquid Amine value (mgKOH / g) 312.5 Viscosity (25℃, mPa·s) 12000

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PUM

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Abstract

The invention discloses a novel epoxy curing agent and a synthesis method thereof. The novel epoxy curing agent is prepared from monoethanolamine and butadiene dioxide through reacting. The curing agent produced by the method is a novel curing agent which has the advantages of moderate viscosity, low reaction activity, low exothermic peak temperature and low toxicity; the curing agent is simple in synthesis process, can be widely applied to the fields of coating materials, electronic electrical packaging, construction adhesives, sealing materials and the like and is a novel epoxy curing agent.

Description

technical field [0001] The invention relates to a curing agent, in particular to a novel epoxy curing agent and a synthesis method thereof. Background technique [0002] When monoethanolamine is used alone as an epoxy curing agent, because of its high curing reactivity, it reacts violently during the curing reaction, has a short pot life and high exothermic peak value, and the cured product has poor performance. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a method of using monoethanolamine as a raw material, reducing its reactivity after reacting with butadiene dioxide, and the synthesis method of a curing agent with a simple synthesis process, so as to improve its curing and product performance after curing . [0004] The present invention is achieved through the following technical solutions: [0005] A new type of epoxy curing agent is a curing agent prepared by reacting monoethanolamine and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/64C07C213/04
Inventor 袁宏伟刘辉
Owner HUNAN SHENLI IND
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