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Aqueous environment-friendly acrylic grafted epoxy resin emulsion and preparation method thereof

An epoxy resin glue, environmental protection technology, applied in the direction of latex paint, coating, etc., can solve the problems of toxicity, flammability, environmental pollution, etc., and achieve the effect of wide application prospects, improved water resistance, and great social significance

Inactive Publication Date: 2011-08-24
朱爱萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Before the present invention, traditional epoxy resins were only soluble in aromatic hydrocarbons, ketones and alcohol organic solvents, and organic solvents were not only expensive but also volatile, and the prepared epoxy resin coatings were all solvent-based coatings. Contains a large amount of volatile organic compounds (VOC), which is toxic, flammable, and pollutes the environment
With the increasing requirements for environmental protection, the demand for low-VOC or even VOC-free coatings is increasing. In addition, the two-component waterborne epoxy resin system is inconvenient to use

Method used

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  • Aqueous environment-friendly acrylic grafted epoxy resin emulsion and preparation method thereof
  • Aqueous environment-friendly acrylic grafted epoxy resin emulsion and preparation method thereof
  • Aqueous environment-friendly acrylic grafted epoxy resin emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: Take 10 parts of epoxy resin raw material components as example:

[0024]

[0025] step:

[0026] (1) 70% amphoteric surfactant MS-1, deionized water, methyl methacrylate, methyl acrylate, butyl acrylate, methacrylic acid, sodium bicarbonate regulator, functional monomer diacetone acrylamide, Phosphate monoester reactive surfactant and epoxy resin are added to the emulsifier for pre-emulsification to obtain a pre-emulsion;

[0027] (2) In the stirred polymerization reactor, add remaining 30% MS-1 and water, then add the 20% pre-emulsion that obtains in the step (1), add 50% potassium persulfate initiator solution again, at 75 ℃ Carry out seed polymerization reaction under;

[0028] (3) After the seed polymerization reaction is completed, the remaining pre-emulsion and potassium persulfate initiator solution in the step (1) are uniformly added to the reactor respectively within 2-3h, and the temperature is controlled at 80° C.;

[0029] (4) After the ...

Embodiment 2

[0032] Embodiment 2: Take 20 parts of epoxy resin raw material components as example:

[0033]

[0034]

[0035] All the other are with embodiment 1.

Embodiment 3

[0036] Embodiment 3: Take 30 parts of epoxy resin raw material components as example:

[0037]

[0038]

[0039] All the other steps are the same as in Example 1.

[0040] In emulsion polymerization, methacrylic acid monomer is usually used as a monomer to improve adhesion, but its dosage can only be controlled at 1%-5% of the monomer amount, and if it is too high, it will easily reduce water resistance. While retaining the ratio of methacrylic acid monomers, this formula uses functional monomer diacetone acrylamide to replace part of methacrylic acid, and the dosage is 2% of the monomer amount. %) The scrub resistance of the latex paint is significantly improved (see Table 2). The test found that the latex of all-acrylic grafted epoxy resin added with this monomer was coated on a glass plate to form a film, soaked in water for 0.5h to turn white, and still adhered well after 10d, while the latex without functional monomer Then it turns white in 7 minutes and falls off...

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PUM

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Abstract

The invention relates to aqueous environment-friendly acrylic grafted epoxy resin emulsion and a preparation method thereof. In the invention, amphoteric surfactant MS-1, deionized water, methyl methacrylate, methyl acrylate, butyl acrylate, methacrylic acid, sodium bicarbonate regulator, functional monomer diacetone acrylamide, phosphate monoester reactive surfactant and epoxy resin are added into an emulsifier injector for pre-emulsification, and then a graft copolymerization process is carried out to obtain the waterborne environment-friendly acrylic grafted epoxy resin emulsion. The invention solves the problem that the traditional epoxy resin has the defects of high price, high volatility, toxicity, pollution and the like, because traditional epoxy resin is only dissolved in aromaticorganic solvent, ketone organic solvent and alcohol organic solvent. The aqueous environment-friendly acrylic grafted epoxy resin emulsion has good weatherability and vitrification temperature adjustability, achieves the goal of combining characteristics of epoxy resin and acrylic resin into a whole, and can be used for preparing single-component green environment-friendly latex paint with low VOC exhaust to replace universal solvent based industrial coating, thereby preventing pollutions.

Description

technical field [0001] The invention relates to a water-based environment-friendly all-acrylic grafted epoxy resin latex and a preparation method thereof. Background technique [0002] Epoxy resin coating is a high-performance coating with good corrosion resistance, chemical resistance and solvent resistance. It has strong adhesion to the substrate, high hardness and wear resistance. It is widely used in the coating field. Has a wide range of applications. [0003] Before the present invention, traditional epoxy resins were only soluble in aromatic hydrocarbons, ketones and alcohol organic solvents, and organic solvents were not only expensive but also volatile, and the prepared epoxy resin coatings were all solvent-based coatings. Contains a large amount of volatile organic compounds (VOC), which is toxic, flammable, and pollutes the environment. With the increasing requirements for environmental protection, the demand for low-VOC or even VOC-free coatings is increasing. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/10C08F2/24C09D151/08C09D5/02
Inventor 朱爱萍
Owner 朱爱萍