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Catalyst compound capable of degrading formaldehyde, dry-powdered emulsion paint and preparation method thereof

A technology of dry powder latex and composites, applied in chemical instruments and methods, powder coatings, physical/chemical process catalysts, etc., can solve problems such as reducing catalytic efficiency

Inactive Publication Date: 2016-12-07
QINGHAI PERSPECTIVE NEW ENERGY TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the photocatalyst particles and redispersed latex particles are usually dispersed in the water phase system to make the final coating. During the drying process of this type of coating, the catalyst particles and latex particles are gradually aggregated separately, which eventually leads to phase separation. reduced catalytic efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0149] Preparation of Acrylate Latex Particles

[0150] Place the four-necked flask equipped with a condensing device, a stirrer, a dropping funnel and a thermometer in a constant temperature water bath, add 0.75 g of betaine dodecylsulfonate, 0.75 g of OP-10, 0.1 g of potassium persulfate and deionized 50mL of water, when heated to 78°C, add 2.7mL of methyl methacrylate and 2.3mL of butyl acrylate dropwise at a constant speed for 20 minutes. After the addition is complete, a fluorescent blue seed emulsion is obtained, and the constant temperature reaction is continued for 20 minutes. Add component A (5mL, 0.06g / mL potassium persulfate solution) and component B (24.3mL methyl methacrylate, 20.7mL butyl acrylate, 0.5mL hydroxyethyl methacrylate and 0.5mL Methacrylate). Then continue to keep warm for 2 hours to obtain the emulsion of acrylate latex particles.

Embodiment 2

[0152] Preparation of Acrylate Latex Particles

[0153] Place the four-necked flask equipped with a condensing device, a stirrer, a dropping funnel and a thermometer in a constant temperature water bath, add 0.5 g of betaine dodecylsulfonate, 1.0 g of OP-10, 0.1 g of ammonium persulfate and deionized 50mL of water, when heated to 78°C, add 2.2mL of methyl methacrylate and 2.8mL of ethyl acrylate dropwise at a constant speed for 20 minutes. After the addition is complete, a fluorescent blue seed emulsion is obtained, and the constant temperature reaction is continued for 20 minutes. Add component A (5mL, 0.06g / mL ammonium persulfate solution) and component B (19.8mL methyl methacrylate, 25.2mL ethyl acrylate, 0.5mL hydroxyethyl acrylate, 0.5mL styrene and 0.5mL acrylic acid). Then continue to keep warm for 2 hours to obtain the emulsion of acrylate latex particles.

Embodiment 3

[0155] Noble metal catalyst particles Au / CeO 2 preparation of

[0156] Add 0.1 g of HAuCl to the stirred reactor 4 , 2mL octylamine, 10g CeO 2 and 300mL deionized water, stirring to completely dissolve the reactants. After raising the temperature of the system to 70° C., the system was kept away from light and stirred at constant temperature for 6 h. The system was then cooled down to room temperature for 10 hours of aging. Centrifuge, wash the obtained solid several times with deionized water, dry the obtained sample at a constant temperature of 90 °C for 10 h, and then bake it at 300 °C for 6 h to obtain Au / CeO 2 Noble metal catalyst particles.

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PUM

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Abstract

The invention discloses a catalyst compound capable of degrading formaldehyde, dry-powdered emulsion paint and a preparation method thereof. The compound is prepared from organic emulsion particles, noble metal catalyst particles and inorganic solid protective agent particles, and is prepared by a spray drying method; the noble metal catalyst particles and the inorganic solid protective agent particles can be embedded into the organic emulsion particles to a certain extent and cannot be separated from the organic emulsion particles so as to form protection layers on the surfaces of the organic emulsion particles; therefore, adhesion of the organic emulsion particles during spray drying is avoided, uniform dispersion of the catalyst particles in a paint film forming process is facilitated, and the catalysis efficiency is improved. By means of the spray drying method, volatilizable components in the organic emulsion particles can be removed; meanwhile, the emulsion paint disclosed by the invention is in a solid state, so that no preservatives or antifreezing agents is added, the VOC value of the system is reduced, and packing and transportation are facilitated.

Description

technical field [0001] The invention relates to a dry powder latex architectural paint, in particular to a catalyst compound for degrading formaldehyde, a dry powder latex paint and a preparation method thereof. Background technique [0002] With the improvement of people's material living standards, interior decoration has become fashionable, and what follows is that indoor air pollution is becoming more and more serious. Formaldehyde is the most serious pollutant from furniture and decoration materials. It can be released slowly from the adhesives, thinners, fiberboards, paints and wallpapers of decoration materials and furniture, even for more than ten years. It has a strong carcinogenic effect. and teratogenic effects. Therefore, it is not enough to only reduce VOC (volatile organic compounds) in architectural coatings, and it is also necessary to try to remove formaldehyde from other sources in the room. [0003] Among the current methods for removing formaldehyde, th...

Claims

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Application Information

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IPC IPC(8): B01J31/38C09D133/12C09D133/08C09D5/03C09D5/14C09D7/12B01D53/86B01D53/72
CPCB01D53/8668B01J31/38C09D5/033C09D5/14C09D133/08C09D133/12C08L1/284C08K9/12C08K3/08C08L1/28C08K2003/0831
Inventor 黄庭熊志敏史一飞
Owner QINGHAI PERSPECTIVE NEW ENERGY TECH
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