Modified tertiary aliphatic amine type epoxy resin latency curing agent and preparation method thereof

A latent curing agent and aliphatic tertiary amine technology, applied in the field of organic synthesis, can solve the problems of high bonding strength and light cured material, and achieve the effect of high bonding strength, light cured material and favorable stirring effect.

Inactive Publication Date: 2019-07-12
广东固研电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be used in adhesives, coatings, composite materials and packaging materials. It can be cured between 60 and 80 ° C. The color of the cured product is light, the bonding strength is high, and it has good latent properties. It has not been prepared by this method in the prior art. Reports on Latent Curing Agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1 Mix 60 g of urea, 51.5 g of N,N-dimethylaminopropanol, 58 g of 1,6-hexanediamine, and 100 g of xylene, stir and heat to 130° C. At this time, a large amount of ammonia gas is released. Continue to heat up to 140°C, and react until no gas is released. The xylene was distilled off under reduced pressure to obtain a nearly colorless melt, which became a brittle solid after cooling. Grind into fine powder with a jet mill and set aside.

Embodiment 2

[0023] Example 2 Mix 60g of urea, 37g of 1,3-propylenediamine, and 120g of DMSO and heat to 140°C. When no ammonia gas is released, add 65g of N,N-diethyl-1,3-propylenediamine and continue React until no ammonia gas is released. The solvent DMSO was distilled off under reduced pressure to obtain a nearly colorless melt. It is a brittle solid after cooling. Grind into fine powder with a jet mill and set aside.

Embodiment 3

[0024] Example 3 Mix 60g of urea and 102g of N,N-dimethyl-1,3-propanediamine, heat to reflux for 5 hours, add 57g of 1,2-cyclohexanediamine, 150g of ethylene glycol diethyl ether, and continue to reflux React until no ammonia gas is released. The solvent was distilled off under reduced pressure to obtain a nearly colorless melt, which became a brittle solid after cooling. Grind into fine powder with a jet mill and set aside.

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PUM

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Abstract

The invention discloses a modified tertiary aliphatic amine type epoxy resin latency curing agent which is prepared by enabling urea or isocyanate to react with polyamine and tertiary aliphatic aminewith amino or hydroxyl in a solvent, removing the solvent and crushing the obtained solid. The prepared latency curing agent is simple and easy in material obtaining, simple and convenient in processand can be cured at a low temperature, and a cured product is light in color and has good adhesion strength.

Description

technical field [0001] The invention relates to an epoxy resin curing agent and a preparation method thereof, in particular to a modified fatty tertiary amine type epoxy resin latent curing agent and a preparation method thereof, belonging to the technical field of organic synthesis. Background technique [0002] Epoxy resins are widely used in industrial fields, such as electronic appliances, electronic circuit boards, composite materials, etc. Epoxy resin is a thermosetting resin. It has no application value by itself. It must react with epoxy curing agent to form an insoluble and infusible network cross-linked product to have practical value. Therefore, curing agent is the key component. [0003] There are many types of curing agents, but they mainly include two-component and one-component curing agents, and one-component curing agents are latent curing agents. Because the latent curing agent does not need to be compounded before use, the metering is accurate and does no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/40C08G18/32C08G18/73C08G18/75C08G18/76
CPCC08G18/3228C08G18/3271C08G18/329C08G18/73C08G18/755C08G18/7614C08G59/4021C08G59/4057
Inventor 康富春唐增花刘海明
Owner 广东固研电子材料有限公司
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