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Preparation and uses of epoxy/acrylic acid hybridisation emulsion

A technology of acrylic acid and alkyl acrylate, applied in latex paints, coatings, etc., can solve the problems of poor water resistance and anti-corrosion performance, high reaction temperature, complicated preparation process, etc., to reduce adverse effects and improve conversion rate , Process economical and feasible effect

Active Publication Date: 2009-05-13
MARINE CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-based epoxy ester resin with core-shell structure can be used to prepare self-drying coatings, but due to its high acid value, water resistance and anti-corrosion performance are still not very good; and the preparation process is complicated, the reaction temperature is high, and the obtained resin also contains About 8% hydrophilic organic solvent

Method used

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  • Preparation and uses of epoxy/acrylic acid hybridisation emulsion
  • Preparation and uses of epoxy/acrylic acid hybridisation emulsion
  • Preparation and uses of epoxy/acrylic acid hybridisation emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049](1) Stir 80g of water, 0.4g of sodium dodecylsulfonate and 0.1g of octylphenol polyoxyethylene ether evenly, heat up to 50°C, add 10.2g of methyl methacrylate, 5.6g of butyl acrylate and 1.2 g methacrylic acid, continue to heat up to 70-80 ° C; add 0.15 g of ammonium persulfate aqueous solution (dissolved in 20 g of water), until the emulsion is clearly blue; dropwise add 10.2 g of methyl methacrylate and 5.6 g of butyl acrylate and 1.2 g of mixed monomers of methacrylic acid were added dropwise and incubated for 30 minutes to obtain a seed emulsion.

[0050] (2) While preparing the seed emulsion, dissolve 12g E-51 epoxy resin with 52g methyl methacrylate and 26g butyl acrylate mixed monomer, then add 0.6g benzoyl peroxide initiator, 0.3g dodecyl Sodium alkylsulfonate and 1.2g octylphenol polyoxyethylene ether, 1.2g vinyl alkyl phosphate, 0.6g N, N-dimethylethanolamine and 50g water are emulsified with a high-shear emulsifying disperser to obtain pre-emulsion.

[0051]...

Embodiment 2

[0054] (1) Stir 80g of water, 0.4g of sodium vinyl sulfonate and 0.1g of nonylphenol polyoxyethylene ether evenly, heat up to 500C, add 9.48g of methyl methacrylate, 6.32g of butyl acrylate and 1.2g of methyl Acrylic acid, continue to heat up to 70-80°C; add 0.15g of potassium persulfate aqueous solution (dissolved in 20g of water), until the emulsion has a clear blue light; add dropwise 9.48g of methyl methacrylate, 6.32g of butyl acrylate and 1.2g of formazan The mixed monomer of acrylic acid was added dropwise and kept warm for 30 minutes to prepare the seed emulsion.

[0055] (2) While preparing seed emulsion, dissolve 12g E-51 epoxy resin with 46.8g methyl methacrylate and 31.2g butyl acrylate mixed monomer, then add 0.6g benzoyl peroxide initiator, 0.3g Sodium vinyl sulfonate and 1.2g nonylphenol polyoxyethylene ether, 1.2g vinyl alkyl phosphate, 0.6g N, N-dimethylethanolamine and 50g water are emulsified with a high-shear emulsifying disperser to obtain pre-emulsion. ...

Embodiment 3

[0059] (1) Stir 80g of water, 0.4g of sodium dodecylsulfonate and 0.1g of nonylphenol polyoxyethylene ether evenly, heat up to 50°C, add 10.2g of methyl methacrylate, 5.6g of butyl acrylate and 1.2 1 g of methacrylic acid, continue to heat up to 70-80 ° C; add 0.15 g of potassium persulfate aqueous solution (dissolved in 20 g of water), until the emulsion is clearly blue; dropwise add 10.2 g of methyl methacrylate and 5.6 g of butyl acrylate and 1.2 g of mixed monomers of methacrylic acid were added dropwise and incubated for 30 minutes to obtain a seed emulsion.

[0060] (2) While preparing the seed emulsion, dissolve 12g E-51 epoxy resin with 52g methyl methacrylate, 20.2g butyl acrylate and 5.8g hydroxypropyl acrylate mixed monomer, then add 0.6g azobisiso Nitrile initiator, 0.3g sodium dodecyl sulfonate and 1.2g nonylphenol polyoxyethylene ether, 1.2g vinyl alkylphenol polyoxyethylene sulfonate, 0.6g N, N-dimethylethanolamine and 50g of water was emulsified with a high-sh...

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Abstract

The invention provides a method for preparing an epoxy / acrylic acid hybrid emulsion capable of being dried at a normal temperature, and application of the epoxy / acrylic acid hybrid emulsion. The method comprises the following steps: firstly, an acrylic acid and an alkyl acrylate monomer are used to prepare a seed emulsion; secondly, an alkyl acrylate solution of epoxy resin is subjected to pre-emulsification; and thirdly, a pre-emulsified liquid is dripped into the seed emulsion, and the mixture is subjected to emulsion polymerization continuously to prepare the epoxy / acrylic acid hybrid emulsion. Compared with the chemical modification methods such as graft copolymerization, esterification and modification of free radicals, the method has low reaction temperature and simple technique; and the prepared emulsion does not contain an organic solvent and has superior water resistance and solvent resistance. The hybrid emulsion prepared by the method can be used for preparing water-soluble self-dried coating; and the coating is quick to dry, has good adhesion, particularly greatly improves the water resistance and the solvent resistance, and can be widely applied to coating in the fields of metallic anticorrosion, buildings, wooden ware and so on.

Description

technical field [0001] The invention relates to the field of polymer materials, and relates to a preparation method of epoxy / acrylic acid hybrid emulsion capable of drying at normal temperature and its application in coating preparation. The emulsion prepared by this method can be widely used in the manufacture of water-based coatings such as metal anticorrosion, construction and woodware. Background technique [0002] With the increasing shortage of petroleum resources, the continuous improvement of public awareness of environmental protection and the continuous improvement of environmental protection laws and regulations, the coating industry is developing in the direction of low pollution and resource conservation. Water-based coatings use water as the dispersion medium, are non-flammable and non-explosive, and are safe and convenient to use. This unique environmental friendliness and safety make water-based coatings one of the important directions for the development of ...

Claims

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Application Information

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IPC IPC(8): C08F283/10C08F2/24C09D151/08C09D5/02
Inventor 万众刘登良姜秀杰初广成王贤明张燕扬凯
Owner MARINE CHEM RES INST
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