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Novel aqueous acrylic acid modified alicyclic epoxy emulsion and preparation method thereof

A water-based acrylic and cycloaliphatic epoxy technology, used in coatings and other directions, can solve the problems of poor weather resistance and moisture and heat resistance, and achieve the effects of good weather resistance, energy saving and fine particle size.

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

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of acrylic acid modified cycloaliphatic epoxy emulsion with good water solubility, which has fine particle size, high gloss, excellent weather resistance and cohesive resistance, and avoids the impact of traditional solvent-based coatings on the environment. At the same time, it overcomes the shortcomings of the existing bisphenol A epoxy resin, such as poor weather resistance and humidity resistance, and is more suitable for use as high-end electrical plastic casings, toys, and coatings for high-end building exterior walls, water-based light-curable inks, and printing and dyeing auxiliaries. And industrial paint, wood paint, etc.

Method used

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  • Novel aqueous acrylic acid modified alicyclic epoxy emulsion and preparation method thereof
  • Novel aqueous acrylic acid modified alicyclic epoxy emulsion and preparation method thereof
  • Novel aqueous acrylic acid modified alicyclic epoxy 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] 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 55°C, and dissolve step 1) The medium solution was added to the reaction vessel, and kept at reflux for 1 h.

[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 82°C, start adding the solution in the remaining step 2) dropwise when blue light is emitted, add 1 / 4 of the solution in step 2)...

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 55°C, and put the The medium solution was added to the reaction vessel, and kept at reflux for 1 h.

[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 82°C, start adding the solution in the remaining step 2) dropwise when the blue light is emitted, add 1 / 4 of the solution ...

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 55°C, and put step 1) The medium solution was added to the reaction vessel, and kept at reflux for 1 h.

[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 82°C, start adding the solution in the remaining step 2) dropwise when blue light is emitted, add 1 / 4 of the solution in step...

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Abstract

The invention relates to novel aqueous acrylic acid modified alicyclic epoxy emulsion and a preparation method thereof. The preparation method comprises the following steps: taking water as a solvent, adding an emulsifying agent and an adjusting agent into a reactor, preheating to 55 DEG C, adding cycloaliphatic epoxy resin, an acrylic monomer, a crosslinking monomer and a polymerization degree regulator, and carrying out reflux and heat preservation for 1 hour; and raising the temperature of part of emulsion and an initiator to 82 DEG C, dropwise adding the surplus emulsion when blue light is emitted and refilling an initiator, finishing dropwise adding within 8 hours, carrying out reflux and heat preservation for 1 hour, cooling to a room temperature after reaction and adding a photoinitiator. The acrylic acid modified alicyclic epoxy emulsion with good water solubility has the advantages of fine grain size, high gloss, excellent weather resistance and viscous resistance, can be made into outdoor coatings, photo-cured ink, process paints and the like, the pollution of traditional solvent-based coatings to the environment is avoided, the defects of bad weather resistance, bad resistance to heat and humidity and the like of the conventional bisphenol type-A epoxy resin are overcome at the same time, the process is simple, and the novel aqueous acrylic acid modified alicyclic epoxy emulsion is a environmentally-friendly material with wide market prospect.

Description

technical field [0001] The invention relates to an alicyclic epoxy resin, in particular to a novel water-based acrylic modified alicyclic epoxy 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, and the environmentally friendly green coatings represented by water-based coatings, UV-curable coatings, high-volume 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 biggest fea...

Claims

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Application Information

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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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