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Aqueous multi-functional crylic acid extinction resin and preparation method thereof

A technology of matting resin and polymeric acrylic acid, which is applied in the direction of coating, etc., can solve the problems of poor chemical resistance, harm to consumers, health of builders, general performance and other problems, and achieve low VOC content, excellent appearance effect and storage stability Good results

Active Publication Date: 2014-03-05
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the development of science and technology and the improvement of people's living standards, people's demand for low-gloss coatings with soft appearance has increased sharply, but most of the matting coatings in production use solvent-based resins as carriers, using a large amount of DMF, TOL and Organic solvents such as MEK, when the coating is dried and formed into a film, the solvent volatilizes and causes environmental pollution, endangering the health of consumers and builders, and does not meet the current environmental protection requirements for coatings
In addition, because solvent-based resins contain a large amount of flammable solvents, there are certain safety hazards in the process of storage and transportation.
[0003] In recent years, water-based matting paints have been widely demanded. Water-based matting paints with acrylic resin as the main resin are mainly characterized by good adhesion, excellent yellowing resistance, good affinity with inorganic fillers, and low production costs; however, their chemical resistance Resistance, scratch resistance, wear resistance, hardness and fullness of the paint film are poor, the overall performance is average, and defects are prone to occur in construction
[0004] Water-based varnish topcoats currently on the market have shortcomings such as water resistance, poor chemical resistance, low hardness, fullness, hand feeling, and poor adhesion resistance.

Method used

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  • Aqueous multi-functional crylic acid extinction resin and preparation method thereof
  • Aqueous multi-functional crylic acid extinction resin and preparation method thereof
  • Aqueous multi-functional crylic acid extinction resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Preparation of organosilicon-modified silica dispersion: mix ethyl orthosilicate, ethanol, and water in a molar ratio of 1:4:8, heat to 55°C, and adjust the system with 0.1mol / L hydrochloric acid pH to 3, under the condition of mechanical stirring, maintain the temperature and continue to react for 8h to obtain SiO 2 Alcohol sol, prepared in SiO 2 Add 4.06 parts of 3-(methacryloyloxy)propyltrimethoxysilane to the alcohol sol, condense and reflux for 2 hours under the condition of heating in a water bath at 75°C, and cool to obtain a silicone-modified silica dispersion.

[0043] (2) 5 parts by mass of hydroxyethyl methacrylate, 5 parts by mass of methyl methacrylate, 0.8 parts by mass of acrylamide, 0.5 parts by mass of methacrylic acid, 12 parts by mass of butyl acrylate, and 4 parts by mass of styrene monomer Mix evenly to prepare acrylate mixed monomer for future use.

[0044] (3) Under the protection of nitrogen, take 102 parts by mass of water, 1 / 4 of the acry...

Embodiment 2

[0047] (1) The preparation method of the organosilicon-modified silica dispersion is the same as step (1) of Example 1.

[0048] (2) 6 parts by mass of hydroxyethyl methacrylate, 7 parts by mass of methyl methacrylate, 2.6 parts by mass of acrylamide, 1.0 parts by mass of methacrylic acid, 18 parts by mass of butyl acrylate, and 5 parts by mass of styrene monomer;

[0049] (3) Under the protection of nitrogen, take 121 parts by mass of water, 1 / 4 of the acrylate mixed monomer prepared in step (1), 0.05940 parts by mass of initiator, 0.891 parts by mass of sodium lauryl sulfate and 0.297 parts by mass of polystyrene Oxyethylene-8-octylphenyl ether compound emulsifier, mix well, react at 75-85°C for 0.5-1h to prepare seed emulsion; then add the remaining 3 / 4 acrylate mixed monomer and 0.1782 mass part initiator, the dropping time is controlled at 4h, after the dropwise addition is completed, the temperature is kept for 2h, after cooling to room temperature, a basic compound is a...

Embodiment 3

[0052] (1) Preparation of organosilicon-modified silica dispersion: mix ethyl orthosilicate, ethanol, and water in a molar ratio of 1:4:8, heat to 70°C, and adjust the system with 0.1mol / L hydrochloric acid pH to 4, under the condition of mechanical stirring, maintain the temperature and continue to react for 12h to obtain SiO 2 Alcohol sol, prepared in SiO 2 Add 4.69 parts of 3-(methacryloyloxy)propyltrimethoxysilane to the alcohol sol, condense and reflux for 3 hours under the condition of heating in a water bath at 80°C, and cool to obtain a silicone-modified silica dispersion.

[0053] (2) 10 parts by mass of hydroxyethyl methacrylate, 8 parts by mass of methyl methacrylate, 3.2 parts by mass of acrylamide, 1.5 parts by mass of methacrylic acid, 30 parts by mass of butyl acrylate, and 7 parts by mass of styrene monomer;

[0054] (3) Under the protection of nitrogen, take 186 parts by mass of water, 1 / 4 of the acrylate mixed monomer prepared in step (2), 0.090 parts by mas...

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Abstract

The invention discloses an aqueous multi-functional crylic acid extinction resin and a preparation method thereof and belongs to the field of extinction type coatings. The preparation method of the aqueous multi-functional crylic acid extinction resin comprises the following steps: (1) preparing a crylic acid ester mixture monomer; (2) sufficiently mixing water, an emulsifier and a part of the crylic acid ester mixture monomer, heating to 70-90 DEG C, adding an initiator to react for 0.5-1 hour, dropwise adding the rest crylic acid ester mixture monomer within 3-5 hours, adding the rest initiator in different batches, performing heat preservation for 1-3 hours after the dropwise adding, cooling to 45 DEG C, sequentially adding modified silicon dioxide and an organic thermosetting polymethylurea resin with the particle size of 3.5mu m, uniformly stirring, cooling down and discharging so as to obtain the aqueous multi-functional crylic acid extinction resin. The aqueous multi-functional crylic acid extinction resin prepared by the preparation method disclosed by the invention is high in extinction efficiency, excellent in water resistance, acid resistance and alkali resistance, and good in abrasion resistance property.

Description

technical field [0001] The invention belongs to the field of matting coatings, in particular to a water-based multifunctional acrylic matting resin and a preparation method thereof. Background technique [0002] In recent years, with the development of science and technology and the improvement of people's living standards, people's demand for low-gloss coatings with soft appearance has increased sharply, but most of the matting coatings in production use solvent-based resins as carriers, using a large amount of DMF, TOL and Organic solvents such as MEK, when the coating is dried and formed into a film, the solvent volatilizes and causes environmental pollution, endangering the health of consumers and builders, and does not meet the current environmental protection requirements for coatings. In addition, since solvent-based resins contain a large amount of flammable solvents, there are certain safety hazards in the process of storage and transportation. [0003] In recent y...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/28C08F220/14C08F212/08C08F220/56C08F220/06C08F2/26C08F2/30C09D133/08C09D7/12
Inventor 庞浩区菊花廖兵黄健恒邓理郑景新刘海路程劲松
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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