Emulsifier for branched chain reaction type epoxy resin and preparation method thereof

A branched chain reaction technology for epoxy resin, applied in epoxy resin coatings, coatings, etc., can solve the problems of unclear emulsifier structure and complicated production process, and achieve fine dispersed phase particles, simple preparation process, good The effect of storage stability

Active Publication Date: 2020-11-20
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] From the above patents, it can be seen that the preparation of epoxy resin emulsifiers mostly requires the use of catalysts, the production process is complicated, and the structure of the emulsifier obtained from the reaction is not clear.

Method used

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  • Emulsifier for branched chain reaction type epoxy resin and preparation method thereof
  • Emulsifier for branched chain reaction type epoxy resin and preparation method thereof
  • Emulsifier for branched chain reaction type epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Synthesize the emulsifier for branched reaction type epoxy resin, the steps are as follows:

[0037] (1) Take 55g of monoamine polyetheramine MEP-1100 and 5.88g of tris(2-hydroxyethyl)isocyanuric acid triacrylate (THEICTA) into a three-necked flask;

[0038] (2) Raise the temperature to 120°C and keep for 3 hours;

[0039] (3) Lower the reaction temperature to 70°C and add 36g of bisphenol A epoxy resin E-20, keep the temperature for 1 hour, and then increase to 130°C for 3 hours; take it out to obtain the emulsifier for the branched reaction type epoxy resin.

[0040] The structural formula of the emulsifier is as follows:

[0041]

Embodiment 2

[0043] (1) Take 55g of monoamino polyetheramine MEP-1100 and 4.51g of pentaerythritol triacrylate into a three-necked flask;

[0044] (2) Raise the temperature to 130°C and keep for 4 hours;

[0045] (3) Lower the reaction temperature to 80°C and add 30g of bisphenol A epoxy resin E-20, keep it warm for 0.5h, and then increase to 120°C for 4h; take it out to get the emulsifier for branched reaction epoxy resin .

[0046] The structural formula of the emulsifier is as follows:

[0047]

Embodiment 3

[0049] (1) Take 55g of monoamino polyetheramine MEP-1100 and 5g of trimethylolpropane triglycidyl ether into a three-necked flask;

[0050] (2) Raise the temperature to 110°C and keep for 2h;

[0051] (3) Reduce the reaction temperature to 65°C and add 30g of bisphenol A epoxy resin E-20, keep the temperature for 1.5 hours, and then rise to 140°C for 2 hours; take it out to obtain the emulsifier for the branched reaction type epoxy resin .

[0052] The structural formula of the emulsifier is as follows:

[0053]

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Abstract

The invention discloses an emulsifier for branched chain reaction type epoxy resin and a preparation method thereof. The emulsifier contains the following molecular structures: N1 is monoamine polyether amine, P is a trifunctional epoxy monomer or a trifunctional acrylate monomer, and Q is a bifunctional epoxy monomer. The preparation method comprises the following steps: reacting a P monomer withmonoamine polyether amine N1 to obtain an intermediate product; and reacting the intermediate product with a Q bifunctional epoxy monomer to obtain the emulsifier. The structure of the prepared emulsifier contains an epoxy group, the emulsifier has good compatibility with epoxy resin, and the epoxy resin emulsion prepared from the emulsifier has good storage stability, centrifugal stability and freeze-thaw stability; meanwhile, the structure of the epoxy resin emulsion contains an epoxy group, so that the epoxy resin emulsion can participate in a curing reaction to enter a cured product network, and a cured coating has excellent medium resistance; the synthesis process is simple, the structure is clear, and no catalyst is needed.

Description

Technical field [0001] The invention belongs to the technical field of water-based coatings, and specifically relates to an emulsifier for a branched chain reaction type epoxy resin and a preparation method thereof. Background technique [0002] There are still a large number of solvent-based epoxy resin coatings used in the field of coatings in my country. The content of organic volatile VOC in solvent-based epoxy resin coatings is mostly as high as 50% to 60%. The organic volatiles produced by the use of solvent-based coatings each year Up to tens of thousands of tons. The volatilization of solvents not only causes serious waste of resources, but also harms the surrounding environment and construction personnel. At present, the country and people are beginning to pay attention to the protection of the environment and have formulated corresponding laws and regulations to restrict the use of solvent-based coatings. [0003] CN109627448A discloses a preparation process of a non-ion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/00C08J3/03C09D163/02C08L63/02
CPCC08G81/00C08J3/03C09D163/00C08J2363/02
Inventor 周建萍胡国锋梁红波傅万里赵春辉方轲
Owner NANCHANG HANGKONG UNIVERSITY
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