Novel aqueous light-cured alicyclic epoxy acrylic acid emulsion and preparation method thereof

A technology of epoxy acrylic and cycloaliphatic epoxy, applied in the direction of coating, etc., can solve the problems of pollution, weather resistance, poor heat and humidity resistance, etc., and achieve the effects of good weather resistance, chemical arc resistance and low production cost

Inactive Publication Date: 2012-09-12
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 light-cured alicyclic epoxy acrylic emulsion with good stability and water solubility, which overcomes the shortcomings of existing bisphenol A epoxy resins such as poor weather resistance and heat and humidity resistance, while avoiding the traditional Solvent-based coatings pollute the environment, and are more suitable for use as coatings for high-end electrical plastic casings, 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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  • Novel aqueous light-cured alicyclic epoxy acrylic acid emulsion and preparation method thereof
  • Novel aqueous light-cured alicyclic epoxy acrylic acid emulsion and preparation method thereof
  • Novel aqueous light-cured alicyclic epoxy acrylic acid emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 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 well. The structural formula of above-mentioned cycloaliphatic epoxy resin is:

[0031]

[0032] Formula 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, and when stirring and preheating to 50°C, the step 1 ) solution into the reaction vessel, reflux insulation 0.5h.

[0033] 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 , heat up to 80°C, start adding the solution in the remaining step 2) dropwise when the blue light is emitted, add 1 / 4 of the solution in step 2) af...

Embodiment 2

[0036] 1) Take 15g of 3,4-epoxycyclohexyl acrylate 6-methoxyhexyl ester, 2.5g of acrylic acid, 42.5g of butyl acrylate, 28.75g of methyl methacrylate, 1.6g of N-methylolacrylamide and normal Dodecyl mercaptan 0.24g, and mix well. The structural formula of above-mentioned cycloaliphatic epoxy resin is:

[0037]

[0038] 2) Take 1g of alkylphenol polyoxyethylene ether and 0.475g of sodium bicarbonate, dissolve them in 100mL of pure water, add them into a reactor equipped with a stirrer and a thermometer, stir and preheat to 50°C, and put step 1) The medium solution was added to the reaction vessel, and kept at reflux for 0.5h.

[0039] 3) Dissolve 0.27g of ammonium persulfate in 12mL 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 , heat up to 80°C, start adding the solution in the remaining step 2) dropwise when the blue light is emitted, add 1 / 4 of the solu...

Embodiment 3

[0042] 1) Take 15g of 4,5-epoxycyclohexylphthalate (1-glyceryl acrylate), 1.5g of acrylic acid, 42.5g of butyl acrylate, 28.75g of methyl methacrylate, and N-methylolacrylamide 1.6g and n-dodecylmercaptan 0.24g, and mix well. The structural formula of above-mentioned cycloaliphatic epoxy resin is:

[0043]

[0044] 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 put step 1) The medium solution was added to the reaction vessel, and kept at reflux for 0.5h.

[0045] 3) Dissolve 0.28g of ammonium persulfate in 4mL 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 , heat up to 80°C, start adding the solution in the remaining step 2) dropwise when the blue light is emitted, add 1 / 4 of the solution in ...

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Abstract

The invention relates to a novel aqueous light-cured alicyclic epoxy acrylic acid emulsion and a preparation method thereof. The method comprises the following steps: adding an emulsifier and a regulator in a reactor, preheating to 50 DEG C, then adding epoxy resin, cross-linking monomers, polymerization degree regulator and acrylic acid monomers, preserving the heat of reflux for 0.5h; heating partial solution and an initiator to 80 DEG C, when glowing blue, adding dropwisely the rest solution in 2.5 h, and refilling the initiator, preserving the heat of reflux for 1h, cooling to room temperature after the reaction, and then adding a photoinitiator. The invention provides a light-cured alicyclic epoxy acrylic acid emulsion with stability and good water-solubility, overcomes the defects of bad weatherability and bad resistance to heat and humidity of existing bisphenol-A epoxy resin, and simultaneously prevents the environment from being polluted by traditional solvent-based coating. The emulsion can be used for preparing outdoor coatings, light-cured printing ink, craft paints and the like, has the advantages of excellent performance, simple technology, and low cost, and is an environment friendly material with a wide market prospect.

Description

technical field [0001] The invention relates to an alicyclic epoxy resin, in particular to a novel water-based photocurable alicyclic epoxy acrylic emulsion and a preparation method thereof. Background technique [0002] With the development of modern science and technology and modern industry, environmental pollution has caused a great threat to the earth and human beings on which people live. The increasing improvement of the world's environmental protection regulations has greatly impacted the traditional solvent-based coatings that emit volatile organic compounds, while environmentally friendly green coatings represented by water-based coatings, UV-curable coatings, high-solid coatings and powder coatings should be used. It has become a hot spot of people's attention and research. my country promulgated the Environmental Protection Law in December 1989, which promoted the rapid development of research, development and application of water-based coatings. The demand for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/32C08F222/20C08F216/16C08F283/06C08F220/18C08F220/14C08F2/30C08F2/26C09D133/14C09D135/02C09D129/10C09D151/08C08L33/14C08L35/02C08L29/10C08L51/08
Inventor 曹祥来孔庆茹乔毅
Owner SHANGHAI ZHONGXIN YUXIANG CHEM
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