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A cationic self-emulsifying water-based epoxy resin quick-drying curing agent

A water-based epoxy resin, cationic technology, used in epoxy resin coatings, coatings, etc., can solve problems such as slow drying speed, and achieve the effects of fast curing speed, high hardness and high cross-linking density

Active Publication Date: 2020-12-22
广州御达电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the amide structure of the curing agent, there is a disadvantage of slow drying speed

Method used

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  • A cationic self-emulsifying water-based epoxy resin quick-drying curing agent
  • A cationic self-emulsifying water-based epoxy resin quick-drying curing agent
  • A cationic self-emulsifying water-based epoxy resin quick-drying curing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A cationic self-emulsifying water-based epoxy resin quick-drying curing agent, its molecule contains hydrophilic quaternary ammonium salt cations and non-ionic long-chain water-based groups; the polybasic aliphatic amines that can react with epoxy resins are located in the The branched chain position of the curing agent reacts with the epoxy resin to have a higher cross-linking density and faster surface drying.

[0022] In parts by weight, the free radical polymerization method of the cationic self-emulsifying water-based epoxy resin quick-drying curing agent comprises the following steps:

[0023] (1) Preparation of multi-component aliphatic amine monomer: Add 12 parts of 3,4-dihydroxy-1-butene to the reaction device under nitrogen and ice bath conditions, and then dropwise add 8 parts of p-toluenesulfonyl chloride, during the reaction process, absorb the acid gas released during the reaction through a calcium hydroxide drying tube. The temperature in the whole proces...

Embodiment 2

[0026] A cationic self-emulsifying water-based epoxy resin quick-drying curing agent, its molecule contains hydrophilic quaternary ammonium salt cations and non-ionic long-chain water-based groups; the polybasic aliphatic amines that can react with epoxy resins are located in the The branched chain position of the curing agent reacts with the epoxy resin to have a higher cross-linking density and faster surface drying.

[0027] In parts by weight, the free radical polymerization method of the cationic self-emulsifying water-based epoxy resin quick-drying curing agent comprises the following steps:

[0028] (1) Preparation of multi-component aliphatic amine monomer: Add 10 parts of 2,3-dihydroxy-1-butene to the reaction device under nitrogen and ice bath conditions, and then dropwise add 4 parts of chlorosulfonic acid, during the reaction process, the acid gas released during the reaction is absorbed through a sodium hydroxide drying tube. The temperature of the whole process d...

Embodiment 3

[0031] A cationic self-emulsifying water-based epoxy resin quick-drying curing agent, its molecule contains hydrophilic quaternary ammonium salt cations and non-ionic long-chain water-based groups; the polybasic aliphatic amines that can react with epoxy resins are located in the The branched chain position of the curing agent reacts with the epoxy resin to have a higher cross-linking density and faster surface drying.

[0032] In parts by weight, the free radical polymerization method of the cationic self-emulsifying water-based epoxy resin quick-drying curing agent comprises the following steps:

[0033] (1) Preparation of multi-component aliphatic amine monomer: Add 10.5 parts of trans-1,4-dihydroxy-2-butene to the reaction device under nitrogen and ice bath conditions, and then add it dropwise to the reactor under stirring conditions Add 5 parts of p-toluenesulfonic acid dropwise. During the reaction process, the acid gas released during the reaction is absorbed through the ...

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Abstract

The invention relates to a cationic self-emulsifying water-based epoxy resin fast-drying curing agent, which contains hydrophilic quaternary ammonium salt cations and non-ionic long-chain water-based groups in its molecular structure; multiple fatty amines are located in the curing agent The branch position can react with epoxy resin for curing. The molecular structure of the curing agent of the present invention contains repeated hydrophilic quaternary ammonium salt cations and non-ionic long-chain water-based groups; the multi-component fatty amine that can react with epoxy resin has self-emulsifying properties, and at the same time the multi-component fatty amine The amine structure makes it react with epoxy resin with higher crosslinking density and faster surface drying, so that it has the characteristics of fast curing speed. The epoxy resin cured by the present invention has the advantages of high hardness and sufficient toughness.

Description

technical field [0001] The invention relates to a water-based epoxy curing agent, in particular to a cationic self-emulsifying water-based epoxy resin quick-drying curing agent, which belongs to the technical field of environmental protection. Background technique [0002] The epoxy resin structure contains active groups such as epoxy groups, hydroxyl groups and ether bonds, and has many excellent electrical insulation properties, physical and mechanical properties, corrosion resistance and bonding properties. It penetrates into people's lives directly or indirectly. In all aspects, in the economic and high-tech fields, such as aerospace, anti-corrosion coatings, building materials, industrial floor coatings, etc. Epoxy resin coatings are generally divided into solvent-based epoxy resins and water-based epoxy resins. With the development of world economy and science and technology, people's awareness of environmental protection is increasing day by day. Solvent-based epoxy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F226/02C08F220/34C08G59/50
CPCC08F283/06C08G59/5006C09D163/00C08F220/34C08F226/02C08F226/06
Inventor 不公告发明人
Owner 广州御达电子科技有限公司
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