Acrylate resin emulsion for water-based paint and its preparing method

An acrylic resin, water-based coating technology, applied in the field of chemical coating protection, can solve the problems of application limitations, the coating film cannot be cured at room temperature, the coating cannot be cured at room temperature, etc.

Inactive Publication Date: 2012-11-21
ZHAJIAGANG FENGCHANG ANTI CORROSION MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The coating cannot be cured at room temperature; the typical method of the water-emulsion system is to use polyethylene glycol-phthalic anhydride-epoxy resin multi-block polymer as the emulsifier, and the epoxy resin is dispersed in water in the form of droplets to form a semi- Transparent to milky white emulsion system, the surface of the droplet is emulsifier molecule droplet with hydrophilic gene, and the inside is hydrophobic epoxy resin molecule. Although the process is simple, the emulsion stability is poor; there is also epoxy resin Dissolve in a mixed solvent of ethylene glycol butyl ether and ethanol, react with aminobenzoic acid, neutralize the product with ethanolamine, add water to make an emulsion, and the coating film cannot be cured at room temperature, and its application is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] (1) Take deionized water 490 by weight; Methacrylic acid 12; Butyl acrylate 480; Methyl methacrylate 510; Nonionic emulsion 37; Anionic emulsifier 8; ; N, N-dimethylethanolamine 2, spare.

[0012] (2) Mix and pre-emulsify the above components.

[0013] (3) In the reaction kettle equipped with agitator, flusher, temperature controller and reflux condenser, add deionized water and heat to 80°C, then add 19 parts of 10% ammonium persulfate aqueous solution, and then within 3.5 hours Add the pre-emulsion prepared above, keep the reaction temperature at about 80°C, then react the whole system at 85°C for 1 hour, cool the prepared dispersion to 25°C, and filter it through a 50-60 μm gauze filter , to obtain a milky white dispersion with a solid content of 56% by weight.

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Abstract

The invention relates to an acrylate resin emulsion for a water-based paint and its preparation method. The invention is characterized in that the acrylate resin emulsion for the water-based paint mainly comprises deionized water, methacrylic acid, butyl acrylate, methyl methacrylate, nonionic emulsifier, anionic emulsifier, monohydroxylethyl phosphate, N,N-dimethyl ethanolamine, a 10% ammonium persulfate aqueous solution, etc. A coating prepared from the acrylate resin emulsion for the water-based paint has the characteristics of high glossiness, strong adhesion, excellent overcoatability, water resistance and alkali resistance and good leveling performance and brushability, etc.

Description

technical field [0001] The invention relates to an acrylic resin emulsion used for water-based paint and a preparation method thereof, belonging to the field of chemical paint protection. Background technique [0002] Acrylic resin coatings have excellent process performance, mechanical properties and physical properties, and are widely used. However, the vast majority of acrylic resin coatings are solvent-based coatings, mostly viscous liquid or solid, insoluble in water, but soluble in organic solvents such as aromatic hydrocarbons and ketones, and organic solvents are volatile, flammable and explosive. , toxic, and cause great harm to the environment and human body. With the increasingly urgent and strict requirements for environmental protection, the requirements for the use of water-based coatings are increasing, and the application of water-based acrylic resin coatings is born. [0003] The so-called water-based epoxy resin is a stable dispersion system prepared by di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F2/26C08F2/30C09D133/12
Inventor 夏玉春
Owner ZHAJIAGANG FENGCHANG ANTI CORROSION MATERIAL
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