Aqueous emulsion composition, and emulsion resin prepared by using same and use thereof

Abstract

The invention provides an aqueous emulsion composition, which is characterized by comprising: (a) C1 to C10 alkyl(methyl) acetate; (b) acrylonitrile; (c) ethenyl-containing carboxylic acid; (d) at least one crylate monomer with multiple functional groups; (e) crosslinking monomer; (f) surfactant; (g) photoinitiator; and (h) aqueous medium. An emulsion resin formed by the emulsion composition has a glass-transition temperature of -50 to -5 DEG C. Compared with the conventional solvent resin, the aqueous emulsion coating provided by the invention can reduce the production of an organic solvent and is more in accordance with the environment-protection requirements. With good balance among high tensile strength, high elasticity, high after tackiness resistance and high fouling resistance, theaqueous emulsion coating is particularly suitable to be used in fields of elastic exterior wall coatings, elastic putty, waterproof coating materials, building adhesives, and the like.

Description

technical field [0001] The present invention relates to an aqueous emulsion composition. The emulsion resin formed from the emulsion composition has a glass transition temperature of -50 to -5°C. Due to its good tensile strength, good elasticity, and good An elastic emulsion with a balanced performance between viscosity and good stain resistance, suitable for technical fields such as elastic exterior wall coatings, elastic putty, waterproof coating materials and construction adhesives. Background technique [0002] The exterior walls of buildings are often exposed to the atmosphere, and the surface mortar layer will be powdered, cracked or cracked under the influence of rain, sunlight and temperature changes. Especially at present, the outer walls of buildings are mostly made of concrete, cement prefabricated panels, and cement mortar plastering. In the frame structure, when new wall materials such as blocks, lightweight partition boards, and gypsum boards are used as fillin...

AI Technical Summary

Problems solved by technology

However, the high temperature in summer often causes these low Tg polymers to soften and stick back, so they are easy to get dusty and have very poor stain resistance

[0004] The Chinese invention patent application No. 98111639.6 discloses an acrylic elastic emulsion, which uses a variety of ethylenic functional monomers to modify the emulsion polymer, so that the water resistance and adhesion of the emulsion polymer and the compatibility with cement However, the elasticity and low-temperature flexibility of the dry film are still not enough, and the problems of cracking and stain resistance of the coating film cannot be completely solved.

[0005] The invention relates to an emulsion resin with multiple cross-links. The design of multiple cross-links greatly improves the tensile strength, elasticity, anti-adhesion and anti-fouling properties, and overcomes the shortcomings of traditional resins, which are hot-sticky and cold-brittle. It is very suitable as a Used in elastic exterior wall coatings, it can also be used in technical fields such as elastic putty, waterproof coating materials, construction adhesives, etc.

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