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A kind of emulsion of dimer acid modified epoxy acrylic resin and preparation method thereof

A technology of epoxy acrylic and epoxy resin, applied in the field of Pickering emulsion, can solve problems such as crack resistance, poor impact resistance, and brittle cured products, and achieve the effects of controlling production costs, reducing impact, and improving stability

Inactive Publication Date: 2018-10-23
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The simple epoxy resin emulsion has important disadvantages: the cured product is brittle, has poor crack resistance and impact resistance, and some raw materials have varying degrees of toxicity and irritation, so modified epoxy resin should be selected

Method used

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  • A kind of emulsion of dimer acid modified epoxy acrylic resin and preparation method thereof
  • A kind of emulsion of dimer acid modified epoxy acrylic resin and preparation method thereof
  • A kind of emulsion of dimer acid modified epoxy acrylic resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: Preparation of dimer acid modified epoxy acrylic resin emulsion

[0038] (1) Preparation of dimer acid modified epoxy resin

[0039] Add 23.52g of epoxy resin, 16.80g of dimer acid, and 0.04g of tetrabutylammonium bromide into the four-necked flask, heat up under the condition of nitrogen, and react at 120°C for about 8 hours, and the acid value is lower than 1mgKOH / g Finish the reaction and cool to room temperature.

[0040] (2) Preparation of acrylic acid modified hybrid resin

[0041] Put the mixed solution of 4.32g of acrylic acid, 0.28g of tetrabutylammonium bromide, and 0.028g of hydroquinone into the four-necked flask containing the hybrid resin obtained in the above steps, and heat and stir at 80°C for about 6 hours. When the acid value is lower than 1mgKOH / g, the reaction is terminated, and the modified epoxy resin is obtained after cooling to room temperature.

[0042] (3) Preparation of modified epoxy resin emulsion by phase inversion method ...

Embodiment 2

[0045] Embodiment 2: the preparation of dimer acid modified epoxy acrylic resin emulsion

[0046] (1) Preparation of dimer acid modified epoxy resin

[0047] Add 23.52g of epoxy resin, 16.80g of dimer acid, and 0.04g of tetrabutylammonium bromide into the four-necked flask, and heat up under the condition of blowing nitrogen. React at a temperature of 140°C for about 6 hours, and the acid value is lower than 1mgKOH / g to end the reaction, and cool to room temperature.

[0048] (2) Preparation of acrylic acid modified hybrid resin

[0049] Put the mixed solution of 4.32g of acrylic acid, 0.28g of tetrabutylammonium bromide, and 0.028g of hydroquinone into the four-necked flask containing the hybrid resin obtained in the above steps, and heat and stir at 80°C for about 4 hours. When the acid value is lower than 1mgKOH / g, the reaction is terminated, and the modified epoxy resin is obtained after cooling to room temperature.

[0050] (3) Preparation of modified epoxy resin emuls...

Embodiment 3

[0052] Embodiment 3: Preparation of dimer acid modified epoxy acrylic resin emulsion

[0053] (1) Preparation of dimer acid modified epoxy resin

[0054] Add 23.52g of epoxy resin, 16.80g of dimer acid, and 0.04g of tetrabutylammonium bromide into the four-necked flask, and heat up under the condition of blowing nitrogen. React at a temperature of 120°C for about 4 hours, the acid value is lower than 1mgKOH / g to end the reaction, and cool to room temperature.

[0055] (2) Preparation of acrylic acid modified hybrid resin

[0056] Put the mixed solution of 4.32g of acrylic acid, 0.28g of tetrabutylammonium bromide, and 0.028g of hydroquinone into the four-necked flask containing the hybrid resin obtained in the above steps, and heat and stir at 100°C for about 4 hours. When the acid value is lower than 1mgKOH / g, the reaction is terminated, and the modified epoxy resin is obtained after cooling to room temperature.

[0057] (3) Preparation of modified epoxy resin emulsion by ...

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Abstract

The invention belongs to the technical field of modified epoxy resin and emulsion preparation, and discloses dimeric dibasic acid modified acrylated epoxy resin emulsion, a preparation method of the emulsion and application of the emulsion to the field of paint. The emulsion is Pickering emulsion obtained through the preparation by using dimeric dibasic acid and acrylic acid for modifying the epoxy resin by a phase inversion technology. The preparation method comprises the following steps of mixing epoxy resin, dimeric dibasic acid and catalysts; performing heating stirring reaction to obtain dimeric dibasic acid modified epoxy resin; mixing the dimeric dibasic acid modified epoxy resin with acrylic acid, catalysts and polymerization inhibitors; performing heating reaction to obtain acrylic acid modified hybrid resin; adding diluting agents, MA-POSS and co-emulsifiers; under the stirring and heating condition, dripping water till the phase inversion; obtaining water-based modified resin emulsion. The modified resin with good mechanical property is obtained; the stability of the emulsion can be improved by changing the consumption of MA-POSS; the consumption of conventional emulsifiers is reduced; the influence of the conventional emulsifiers on the product performance is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of modified epoxy resin and emulsion preparation, in particular to an emulsion of dimer acid-modified epoxy acrylic resin and its preparation method and application in the field of coatings. The emulsion uses dimer acid and acrylic acid The epoxy resin was modified and the Pickering emulsion was prepared by phase inversion technique. Background technique [0002] Epoxy resins generally refer to organic compounds containing two or more epoxy groups in the molecule. Due to the active epoxy groups in the molecular structure, they can undergo cross-linking reactions with various types of curing agents. It forms an insoluble polymer with a three-way network structure. However, pure epoxy resin emulsion has important disadvantages: the cured product is brittle, has poor crack resistance and impact resistance, and some raw materials have varying degrees of toxicity and irritation, so modified epoxy resin should be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/10C08L63/00C08G59/14C08J3/03C09D163/10
CPCC08G59/1466C08J3/03C08J2363/10C09D163/10
Inventor 许凯梁晟源桂雪峰邢玉秀高树曦陈鸣才
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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