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Synthesis of solidifying agent

A synthesis method and curing agent technology, applied in the direction of adhesive additives, polymer adhesive additives, coatings, etc., can solve the problems of long operating time, low viscosity, low exothermic peak temperature, etc., and achieve long operating time, Effect of low viscosity and low exothermic peak temperature

Active Publication Date: 2009-08-19
NANTONG XINGCHEN SYNTHETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many domestic manufacturers of curing agents, but there is no production of composite curing agents for large castings with long operating time, good toughness, low viscosity, low exothermic peak temperature, and low toxicity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 206 grams of diethylenetriamine and add it to a three-necked flask, start stirring, control the speed at 200±10 rpm, slowly drop in 110 grams of acrylonitrile, control the reaction temperature at 30±2°C, and the reaction time is 3 hours. After the addition is complete, raise the temperature to 70±1°C, continue to stir and react for 5 hours, then lower to normal temperature, remove the reaction device, pour the prepared curing agent into a bottle and weigh it. The test data is shown in the table below:

[0017] Test items Example 1 Exterior light yellow transparent liquid Amine value (KOH)mg / g 440 Viscosity(25℃)mPa.s 78

Embodiment 2

[0019] Weigh 178 grams of diethylenetriamine and add it to a three-necked flask, start stirring, control the speed at 200±10 rpm, slowly drop in 150 grams of acrylonitrile, control the reaction temperature at 48±2°C, and the reaction time is 4 hours. After the addition is complete, raise the temperature to 70±1°C, continue to stir and react for 6 hours, then lower to normal temperature, remove the reaction device, pour the prepared curing agent into a bottle and weigh it. The test data is shown in the table below:

[0020] Test items Example 2 Exterior light yellow transparent liquid Amine value (KOH)mg / g 410 Viscosity(20℃)mPa.s 97

Embodiment 3

[0022] Weigh 150 grams of diethylenetriamine and add it to a three-necked flask, start stirring, control the speed at 200±10 rpm, slowly add 185 grams of acrylonitrile, and control the reaction temperature at 52±2°C. The reaction time is 6 hours, drop After completion, raise the temperature to 70±1°C, continue to stir and react for 6 hours, then lower to normal temperature, remove the reaction device, pour the prepared curing agent into a bottle and weigh it. The test data is shown in the table below.

[0023] Test items Example 3 Exterior light yellow transparent liquid Amine value (KOH)mg / g 357 Viscosity(20℃)mPa.s 126

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PUM

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Abstract

The invention discloses a synthesis method of solidifying agent and the solidifying agent is obtained from reaction by using diethylene triamine and acrylonitrile as raw materials. The solidifying agent produced by the invention is a novel solidifying agent with long operation time, good tenacity, low viscosity, low temperature of exothermic peak and low toxicity. The solidifying agent with easy access to production materials, simple synthesis process and wide application is an indispensable material in the field of paint, electronics and electricity, construction, adhesive, sealant and compound materials and is also a novel solidifying agent used in the domestic power industry.

Description

Technical field: [0001] The invention relates to a method for synthesizing a curing agent. Background technique: [0002] At present, there are many domestic manufacturers of curing agents, but there is no production of composite curing agents for large-scale castings with long operating time, good toughness, low viscosity, low exothermic peak temperature, and low toxicity. Invention content: [0003] The object of the present invention is to provide a kind of synthetic method of the solidifying agent that production raw material is easy to obtain, and synthetic process is simple. [0004] Technical solution of the present invention is: [0005] A method for synthesizing a curing agent is characterized in that the curing agent is prepared by reacting diethylenetriamine and acrylonitrile as raw materials. [0006] The molar ratio of diethylenetriamine to acrylonitrile is 1.0:1.0-2.5. The reaction temperature is 20-75°C. The reaction time is 7 to 12 hours. [0007] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K11/00C09D7/12C09J11/08
Inventor 李广琦王联合茅大联张妍王美林
Owner NANTONG XINGCHEN SYNTHETIC MATERIAL