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Amine curing agent and preparation process thereof

A kind of amine curing agent and preparation technology, applied in the field of amine curing agent and its preparation, can solve the problems of explosive polymerization, easy freezing, inconvenient use, etc., and achieve simple production process, high production efficiency and stable reaction Effect

Inactive Publication Date: 2015-05-20
苏州市吴中区木渎三兴树脂溶剂厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The original amine curing agent is m-xylylenediamine, which is easy to freeze in winter and inconvenient to use. In addition, the cured product is easy to whiten and explode, making the surface of the cured product not smooth
Therefore, it is difficult to meet higher usage requirements, and it needs to be solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] Embodiment: a kind of amine curing agent, described amine curing agent is the condensation of m-xylylenediamine monomer, structural formula is as follows:

[0027] n represents an integer greater than 0.

[0028] The preparation process of the amine curing agent comprises the following raw materials: m-xylylenediamine and a catalyst, and the mass ratio of the m-xylylenediamine to the catalyst is 100:3; wherein, the structural formula of the m-xylylenediamine is as follows: Its molecular weight is 136, and the amine value is 500-600;

[0029] The catalyst is an aluminum-nickel alloy, and the mass ratio of aluminum to nickel is 55:45;

[0030] The preparation technology of this amine curing agent comprises the following steps:

[0031] 1. Put m-xylylenediamine and catalyst into a three-necked flask, and heat it with an infrared lamp for 75 to 85 minutes to raise the temperature to 180°C ± 5°C, and keep it warm for 100 minutes;

[0032] Two, continue to react for 3 ...

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PUM

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Abstract

The invention discloses an amine curing agent. The amine curing agent is characterized in that the amine curing agent is the condensation of a m-xylylenediamine monomer: a formula shown in the specification. A preparation process of the amine curing agent comprises the following raw materials: m-xylylenediamine and a catalyst with a mass ratio of 100:3, wherein a structural formula of m-xylylenediamine is shown in the specification, the molecular weight of m-xylylenediamine is 136, and an amine value of m-xylylenediamine is 500-600; and the catalyst is an aluminum-nickel alloy. The preparation process comprises the following steps: I, putting m-xylylenediamine and the catalyst into a three-mouth flask, heating by using an infrared lamp to ensure that the temperature is increased to 180+ / -5 DEG C, and preserving heat; II, continuously reacting, and absorbing ammonia gas which is produced in a reaction process by using a sulfuric acid solution; III, picking a sample, measuring the viscosity of the sample, and ending the reaction when the viscosity reaches 600-900CP; and IV, removing the catalyst by virtue of filtration. After being modified, the amine curing agent disclosed by the invention cannot be frozen, cannot have a whitening phenomenon, and is stable in reaction; and the preparation process disclosed by the invention is high in production efficiency, simple in required raw materials and concise in production process.

Description

technical field [0001] The invention relates to an amine curing agent and a preparation process thereof. Background technique [0002] The original amine curing agent is m-xylylenediamine, which is easy to freeze in winter and is inconvenient to use. In addition, the cured product is easy to whiten and explode, making the surface of the cured product not smooth. Therefore, it is difficult to meet higher usage requirements, and it needs to be solved. Contents of the invention [0003] The object of the present invention is to provide an amine curing agent and its preparation process. [0004] In order to achieve the above object, the technical scheme of the amine curing agent of the present invention is: a kind of amine curing agent, the amine curing agent is the condensation of m-xylylenediamine monomer, and the structural formula is as follows: [0005] n represents an integer greater than 0. [0006] In order to achieve the above object, the technical scheme of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02
Inventor 姚明福
Owner 苏州市吴中区木渎三兴树脂溶剂厂
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