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A kind of functionalized epoxy acrylate and its preparation method and application

A technology of epoxy acrylate and part epoxy acrylate, which is applied in the field of functionalized epoxy acrylate and its preparation, can solve the problem of poor water resistance and heat resistance of coating film, poor storage stability of emulsion, and application of emulsion. Short cycle and other problems, to achieve the effect of strong adhesion, excellent thermal stability and mechanical properties, uniform and translucent film

Active Publication Date: 2022-04-05
国科广化(南雄)新材料研究院有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of mechanical method is simple, but the particle size of the prepared emulsion is large, easy to separate, and the strength of the cured product is poor; the storage stability of the emulsion prepared by the phase inversion method is not good; the application period of the emulsion added with emulsifier is relatively short; The epoxy acrylic resin prepared by the method can be uniformly dispersed in water and has a long pot life
However, due to the introduction of hydrophilic groups into the epoxy acrylate obtained by the chemical modification method, the water resistance and heat resistance of the coating film are deteriorated.

Method used

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  • A kind of functionalized epoxy acrylate and its preparation method and application
  • A kind of functionalized epoxy acrylate and its preparation method and application
  • A kind of functionalized epoxy acrylate and its preparation method and application

Examples

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Effect test

Embodiment 1

[0055] (1) Preparation of epoxy acrylate resin: add 100 parts by mass of bisphenol A type epoxy resin (epoxy value 0.51) into the reactor equipped with reflux condenser, dropping funnel, thermometer and stirrer, heat and stir to 80°C, then add 2 parts by mass of tetrabutylammonium bromide, 0.8 parts by mass of hydroquinone and 50 parts by mass of acrylic acid, raise the temperature to 110°C, and react for 4 hours to obtain an epoxy acrylate resin.

[0056] (2) Preparation of functionalized epoxy acrylate: Add 60 parts by mass of isobutylene alcohol polyoxyethylene ether (average molecular weight is 2400, the same below), 5 parts by mass of isophorone diisocyanate and 60 parts by mass of methyl ethyl ketone in a three-necked flask (All samples are dewatered with 4A molecular sieves, and the whole reaction is guaranteed to be carried out in anhydrous state), the temperature is raised to 70°C, and the reaction is 8h; then add 10 parts by mass of epoxy acrylate, and add 1 part by m...

Embodiment 2

[0060] (1) Preparation of epoxy acrylate resin: add 100 parts by mass of bisphenol A type epoxy resin (epoxy value 0.51) into the reactor equipped with reflux condenser, dropping funnel, thermometer and stirrer, heat and stir to 80°C, then add 1 part by mass of tetrabutylammonium bromide, 0.5 parts by mass of hydroquinone and 40 parts by mass of acrylic acid, raise the temperature to 120°C, and react for 5 hours to obtain an epoxy acrylate resin.

[0061] (2) Preparation of functionalized epoxy acrylate: add 50 mass parts of isobutylene alcohol polyoxyethylene ether, 7 mass parts of isophorone diisocyanate and 45 mass parts of butanone in a three-necked flask (all samples are carried out with 4A molecular sieve Water removal operation, the whole reaction is guaranteed to be carried out in anhydrous state), the temperature is raised to 75 ° C, and the reaction is 8 hours; then add 15 parts by mass of epoxy acrylate, and add 2 parts by mass of tetrabutylammonium bromide as a cata...

Embodiment 3

[0065] (1) Preparation of epoxy acrylate resin: add 100 parts by mass of bisphenol A type epoxy resin (epoxy value 0.85) into the reactor equipped with reflux condenser, dropping funnel, thermometer and stirrer, heat and stir to 80°C, then add 2 parts by mass of tetrabutylammonium bromide, 0.8 parts by mass of hydroquinone and 50 parts by mass of acrylic acid, raise the temperature to 110°C, and react for 4 hours to obtain an epoxy acrylate resin.

[0066] (2) Preparation of functionalized epoxy acrylate: add 60 mass parts of allyl polyoxyethylene ether, 5 mass parts of isophorone diisocyanate and 80 mass parts of methyl ethyl ketone in a three-necked flask (all samples use 4A molecular sieve Carry out water removal operation, the whole reaction is guaranteed to be carried out in anhydrous state), heat up to 76 ° C, and react for 8 hours; then add 12 parts by mass of epoxy acrylate, and add 1 part by mass of tetrabutylammonium bromide as a catalyst reaction 8h, finally remove ...

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Abstract

The invention discloses a functionalized epoxy acrylate, a preparation method and application thereof. The functionalized epoxy acrylate of the present invention is obtained by reacting polyether type hydrophilic prepolymer and epoxy acrylate through a catalyst, and is a self-made nonionic self-emulsifier, which can not only emulsify pure epoxy acrylate, The prepared emulsion has small dispersion particle size, good stability and long application period, and it also retains the double bond structure with photocuring function. Not only that, its double bond can also be covalently polymerized with the double bond on MA POSS, making the two more compatible. The modified water-based epoxy acrylate UV curing coating of MA POSS of the present invention has long application period, good storage stability, improved water resistance, excellent thermal stability and mechanical properties, low dielectric constant and dielectric loss, It can be widely used in heat-sensitive substrates, wood coatings and electronic packaging fields.

Description

technical field [0001] The invention relates to the field of water-based coatings, in particular to a functionalized epoxy acrylate and its preparation method and application. Background technique [0002] Epoxy acrylic resin is one of the most used light-sensitive resins. The light-curing coating based on it has the advantages of high hardness, good gloss, and excellent chemical resistance. And it itself does not have water dispersibility, only the solvent can make it dispersed, but the solvent volatilization is toxic, has a strong pungent smell, and its application range is limited. Therefore, the waterborne research of epoxy acrylic resin has aroused the interest of many scientists. At present, the preparation of waterborne epoxy acrylic resin mainly includes mechanical method, phase inversion method, external emulsifier method and chemical modification method. The process of mechanical method is simple, but the particle size of the prepared emulsion is large, easy to s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/75C08G18/67C08G18/10C09D163/10C09D175/16C09D183/07C08G59/17
CPCC08G18/755C08G18/6715C08G18/6705C08G18/10C09D163/10C08G59/1466C08L75/16C08L83/06
Inventor 刘伟区刘荷花梁利岩
Owner 国科广化(南雄)新材料研究院有限公司