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A self-emulsifying non-ionic water-based epoxy curing agent

A water-based epoxy, non-ionic technology, applied in the direction of epoxy resin glue, epoxy resin coating, adhesive, etc., can solve the problems of difficult emulsification of epoxy resin, incomplete curing, slowing down the curing speed of curing agent, etc., to achieve system Better stability, high production efficiency, and improved compatibility

Active Publication Date: 2020-04-03
雅安市弘利展化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the affinity between the primary amine group and water is too strong, on the one hand, the lipophilicity of the curing agent is reduced, and it is difficult to emulsify the epoxy resin. On the one hand, primary amines are more likely to be in contact with water, thereby reducing the chance of contact with epoxy resin, making it difficult to diffuse into the epoxy resin, making it difficult or even incomplete to cure the epoxy emulsion
[0008] The existing water-based epoxy curing agent is mainly prepared from diethylenetriamine, triethylenetetramine, etc. as basic raw materials through lipophilic modification. Use is restricted in many occasions

Method used

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  • A self-emulsifying non-ionic water-based epoxy curing agent
  • A self-emulsifying non-ionic water-based epoxy curing agent
  • A self-emulsifying non-ionic water-based epoxy curing agent

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The self-emulsifying nonionic water-based epoxy curing agent of the present embodiment comprises the following components by weight:

[0032]

[0033] After the self-emulsifying non-ionic water-based epoxy curing agent of the present embodiment is mixed and stirred in proportion to epoxy resin, a stable white emulsion is formed; after the emulsion is diluted to 20% content, the coating film is surface-dried for 2 hours and hard-dried for 12 hours; the coating film has no The color is transparent, uniform and bright, the gloss is 70, the adhesion is grade 1, and the hardness is 3-4H.

Embodiment 2

[0035] The self-emulsifying nonionic water-based epoxy curing agent of the present embodiment comprises the following components by weight:

[0036]

[0037] After the self-emulsifying non-ionic water-based epoxy curing agent of this embodiment is mixed and stirred in proportion to epoxy resin, a stable white emulsion is formed; the emulsion is diluted to a content of 20% and the coating film is surface-dried for 2.5 hours and hard-dried for 14 hours; Colorless and transparent, uniform and bright, gloss 65, adhesion level 1, hardness 3-4H.

Embodiment 3

[0039] The self-emulsifying nonionic water-based epoxy curing agent of the present embodiment comprises the following components by weight:

[0040]

[0041] After the self-emulsifying non-ionic water-based epoxy curing agent of this embodiment is mixed and stirred in proportion to epoxy resin, a stable white emulsion is formed; the emulsion is diluted to a content of 20% and the coating film is surface-dried for 2.5 hours and hard-dried for 14 hours; Colorless and transparent, uniform and bright, gloss 60, adhesion level 2, hardness 2-3H.

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Abstract

The invention discloses a self-emulsification nonionic waterborne epoxy curing agent. The waterborne epoxy curing agent is prepared from the following components in parts by weight: 100 parts of N,N-di(aminopropyl)ethylenediamine, 60 to 250 parts of low-molecular epoxy compound; 100 to 300 parts of epoxy resin; 1 to 8 parts of protecting agent; and 120 to 2500 parts of water. The self-emulsification nonionic waterborne epoxy curing agent can rapidly cure the epoxy resin; and meanwhile, an epoxy emulsion system is good in stability and excellent in film forming effect.

Description

technical field [0001] The invention relates to a curing agent, in particular to a self-emulsifying nonionic water-based epoxy curing agent. Background technique [0002] With the increasing concern of the environment, the requirements for VOC content in coatings are becoming more and more stringent. Traditional solvent-based coatings cannot meet environmental requirements, and are gradually developing towards solvent-free and water-based coatings. Water-based epoxy coatings account for a large proportion of coatings, and the core of its technology is water-based epoxy curing agents. [0003] The water-based curing agent in the existing market is divided into two categories, one is the water-based curing agent combined with water-based epoxy resin, this curing agent cannot be used directly with ordinary commercially available epoxy resin, water-based epoxy resin must be used, which greatly improves The use cost of materials; the other type is self-emulsifying water-based e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/50C08J3/03C08L63/00C09D163/00C09J163/00
CPCC08G59/5006C08J3/03C08J2363/00C08L63/00C08L2201/10C09D163/00C09J163/00
Inventor 吴洪斌杨旭明
Owner 雅安市弘利展化工有限公司
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