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UV-curing water-based alicyclic epoxy acrylate emulsion

An epoxy acrylate and cycloaliphatic technology, which is applied in the field of UV curing water-based cycloaliphatic epoxy acrylate emulsion, can solve the problems of weather resistance, poor heat and humidity resistance, pollution, etc., achieve excellent performance, avoid pollution, and improve the preparation process simple effect

Inactive Publication Date: 2012-09-19
SHANGHAI ZHONGXIN YUXIANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a novel UV curing water-based alicyclic epoxy acrylate emulsion with high film hardness and good water resistance, which overcomes the shortcomings of existing bisphenol A epoxy resins such as poor weather resistance and heat and humidity resistance, At the same time avoiding the pollution of the environment by traditional solvent-based coatings, it is more suitable for use as coatings for plastic casings of high-end electrical appliances, toys and high-end building exterior walls, water-based light-curing inks, printing and dyeing auxiliaries, industrial paints, wood paints, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Take 15g of 3,4-epoxycyclohexylmethyl methacrylate, 2.25g of acrylic acid, 42.5g of butyl acrylate, 28.5g of methyl methacrylate, 1.4g of N-methylolacrylamide and n-dodecane Base mercaptan 0.2g, and mix homogeneously, the structural formula of above-mentioned cycloaliphatic epoxy resin is:

[0033] ;

[0034] 2) Take 1g of alkylphenol polyoxyethylene ether and 0.4g of sodium bicarbonate, dissolve them in 97mL of pure water, add them into a reactor equipped with a stirrer and a thermometer, stir and preheat to 50°C, and then step 1) The medium solution was added to the reaction vessel, refluxed and kept warm for 0.5h, and set aside;

[0035] 3) Dissolve 0.26g of ammonium persulfate in 3mL of pure water, add 1 / 4 of this solution and 1 / 4 of the solution in step 2) to the reactor equipped with a stirrer, thermometer and constant pressure dropping funnel , raise the temperature to 80°C, start to drop the solution in the remaining step 2) when the blue light is emitted...

Embodiment 2

[0039] 1) Take poly[(2-oxiranyl)-1,2-cyclohexanediol] 2-ethyl-2-(hydroxymethyl)-1,3-propanediol ether (3:1) 15g , acrylic acid 1g, butyl acrylate 42.5g, methyl methacrylate 28.75g, N-methylol acrylamide 1.6g and n-dodecyl mercaptan 0.24g, and mix well, the structural formula of above-mentioned cycloaliphatic epoxy resin for:

[0040] ;

[0041] 2) Take 1g of alkylphenol polyoxyethylene ether and 0.475g of sodium bicarbonate, dissolve them in 96mL of pure water, add them into a reactor equipped with a stirrer and a thermometer, stir and preheat to 50°C, and then step 1) The medium solution was added to the reaction vessel, refluxed and kept warm for 0.5h, and set aside;

[0042]3) Dissolve 0.28g of ammonium persulfate in 4 mL of pure water, add 1 / 4 of this solution and 1 / 4 of the solution in step 2) to a reactor equipped with a stirrer, a thermometer and a constant pressure dropping funnel Inside, raise the temperature to 80°C, start adding the solution in the remaining st...

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PUM

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Abstract

The invention relates to a UV-curing water-based alicyclic epoxy acrylate emulsion. The preparation method of the UV-curing water-based alicyclic epoxy acrylate emulsion comprises the following steps: preheating an emulsifier and a regulator to 50 DEG C, adding epoxy resin, a cross-linking monomer, a polymerization degree regulator and an acrylic acid monomer, and keeping the temperature for 0.5 hours while refluxing; heating part of the solution and an initiator to 80 DEG C; when emitting blue light, adding the rest of the solution and supplementing the initiator within 2.5 hours, keeping the temperature for 1 hour while refluxing, heating to 88 DEG C, and aging for 1 hour; regulating the temperature of the emulsion to 85 DEG C, adding glycidyl methacrylate, and heating to 90 DEG C to react for 2.5 hours; and after the reaction finishes, cooling to room temperature, and adding a free-radical initiator. The UV-curing water-based alicyclic epoxy acrylate emulsion has the advantages of high film hardness and high water resistance, overcomes the defects of poor weather resistance, poor damp heat resistance and the like in the existing bisphenol A epoxy resin, avoids the environmental pollution of the traditional solvent type paint, can be used for preparing outdoor paints, photocuring inks, technical paints and the like, and is a material having wide market prospects.

Description

technical field [0001] The invention relates to an alicyclic epoxy acrylate emulsion, in particular to a UV curable water-based alicyclic epoxy acrylate emulsion. Background technique [0002] The increasing improvement of the world's environmental protection regulations has greatly impacted the traditional solvent-based coatings that emit volatile organic compounds, and environmentally friendly green coatings represented by water-based coatings, UV-curable coatings, high-solid coatings and powder coatings have emerged as the times require. has become a research hotspot. [0003] UV curing water-based cycloaliphatic epoxy acrylate emulsion is obtained by using a new synthesis idea, that is, after the polymerization of cycloaliphatic epoxy acrylate emulsion is completed, C=C is introduced to make it UV-curable, thereby improving Comprehensive performance of emulsion coating film. Its cured product has the following characteristics: ① Higher film hardness, compression and te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/32C08F220/06C08F218/16C08F222/20C08F283/06C08F8/00
Inventor 曹祥来孔庆茹乔毅
Owner SHANGHAI ZHONGXIN YUXIANG CHEM
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