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Polyamide modified phenol formaldehyde amine epoxy resin synthesis method and corresponding high-toughness low-temperature rapid-drying heavy anti-corrosion paint thereof

A technology of phenalkamine epoxy resin and synthesis method, which is applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve problems such as large polarity difference, whitening, and poor compatibility, and achieve good adhesion and anti-corrosion performance, the effect of high cross-linking density

Inactive Publication Date: 2016-12-21
泰州精英化成医药科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large difference in polarity between the two, the compatibility after mixing is not good, and many follow-up problems are likely to occur, such as shrinkage cavity, whitening, etc.

Method used

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Embodiment Construction

[0015] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples, which are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0016] A kind of synthetic method of polyamide modified phenalkamine epoxy resin, concrete steps are as follows:

[0017] Step 1: In terms of parts by mass, take polyethylene polyamine: 5-40 parts; dimer acid: 100 parts; platinum complex: 5-10 parts, and react for 3-8 hours at an environment of 120-180 degrees , the intermediate is obtained by dehydration, which is applied to the next step;

[0018] Step 2: 80~150 parts of intermediates in the first step; cardanol: 100~300 parts; formaldehyde: 10~60 parts; additives: 1~10 parts, react for 3~5 hours in an environment of 60~120 degrees ;

[0019] Step 3: The product obtained in Step 2 is dehydrated and then added with additives to obtain the target...

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Abstract

The invention relates to a polyamide modified phenol formaldehyde amine epoxy resin synthesis method, which specifically comprises: 1, taking 5-40 parts by mass of polyethylene polyamine, 100 parts by mass of dimer acid, and 5-10 parts by mass of a platinum coordination compound, carrying out a reaction for 3-8 h in an environment with a temperature of 120-180 DEG C, and dewatering to obtain an intermediate used in the next step; 2, taking 80-150 parts by mass of the intermediate obtained in the step 1, 100-300 parts by mass of cardanol, 10-60 parts by mass of formaldehyde, and 1-10 parts by mass of an auxiliary agent, and carrying out a reaction for 3-5 h in an environment with a temperature of 60-120 DEG C; and 3, dewatering the product obtained in the step 2, and adding an auxiliary agent so as to obtain the target product.

Description

technical field [0001] The invention belongs to the field of paint production, and in particular relates to a synthesis method of polyamide-modified phenalkamine epoxy resin and a corresponding high-toughness, low-temperature, quick-drying heavy-duty anti-corrosion paint. Background technique [0002] Existing curing agents are mainly phenalkamine type epoxy resin curing agents, polyamide type epoxy resin curing agents, and blended type curing agents. Phenalkamine type epoxy resin curing agent uses phenolic compounds, aldehyde compounds and amine compounds as raw materials, and is a kind of aromatic group-containing curing agent product obtained through Mannich reaction. Due to the fast curing time and high hardness, the product appears Due to poor toughness and easy fracture, it is not accepted by the public. Polyamide type epoxy resin curing agent is a type of curing agent product with polyamide structure obtained from dimer acid and amine compounds. Although the product ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G14/06C08G69/34C08G59/62C09D163/00C09D5/08
CPCC08G14/06C08G59/62C08G69/34C09D5/08C09D163/00
Inventor 张凯
Owner 泰州精英化成医药科技有限公司
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