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Multifunctional environment-friendly emulsion as well as preparation method and application thereof

An emulsion and composite emulsion technology, applied in coatings, biocide-containing paints, antifouling/underwater coatings, etc., to achieve excellent film-forming properties, improved adhesion, and low volatile content.

Active Publication Date: 2013-03-13
NANTONG TENGLONG CHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, with the enhancement of environmental protection awareness, green coatings are required, which are not harmful to people's health and the environment, and are antibacterial and air purifying. However, pure acrylic emulsion, silicone acrylic emulsion, and vinyl acetate-acrylate emulsion coatings are difficult to meet above requirements

Method used

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  • Multifunctional environment-friendly emulsion as well as preparation method and application thereof
  • Multifunctional environment-friendly emulsion as well as preparation method and application thereof
  • Multifunctional environment-friendly emulsion as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation of organosilicon-acrylate / inorganic nanocomposite emulsion comprises the following steps:

[0040](1) Add 4.0(wt)% of copper oxide with a particle size of 82nm to water containing 55(wt)%, Dowfax 2A-1 emulsifier 0.15(wt)%, EDTA0.03(wt)% and ammonium persulfate 0.10 (wt)% in the reactor, vacuumize after stirring and dispersing, heat up to 75°C under nitrogen protection conditions, add 7.5(wt)% styrene monomer dropwise for 30 minutes, and keep warm for 15 minutes; obtain polymer-coated inorganic nanoparticle emulsion;

[0041] (2) In the emulsion of step (1), add dropwise water containing 49 (wt) %, 1.0 (wt) % sodium bicarbonate, 0.30 (wt) % Dowfax 2A-1, 0.45 (wt) % ammonium persulfate, 2.0 (wt)% methylol acrylamide, 3.0(wt)% acrylic acid aqueous solution and 81(wt)% methyl methacrylate acrylate 32(wt)%, hydroxyethyl acrylate 2.5(wt)%, acrylic acid A mixed monomer composed of 46.5 (wt)% of butyl ester, the dropwise addition time is 2.0 hours, and the tem...

Embodiment 2

[0048] The preparation of organosilicon-acrylate / inorganic nanocomposite emulsion comprises the following steps:

[0049] (1) Add 4.0 (wt)% of titanium dioxide with a particle size of 90nm to water containing 60 (wt)%, Dowfax 2A-1 emulsifier 0.15 (wt)%, EDTA0.05 (wt)% and ammonium persulfate 0.10 ( wt)% of the reactor, vacuumize after stirring and dispersing, heat up to 75°C under nitrogen protection conditions, add 5.0 (wt)% styrene monomer dropwise for 30 minutes, and keep warm for 15 minutes; obtain polymer-coated inorganic nano particle emulsion;

[0050] (2) in step (1) emulsion, add dropwise to comprise 44 (wt)% water, 1.15 (wt)% sodium carbonate, 0.25 (wt)% Dowfax 2A-1, 0.25 (wt)% ammonium persulfate, 1.0 ( wt)% methylol acrylamide, 4.0(wt)% acrylic acid aqueous solution and 82(wt)% methyl methacrylate acrylate 33(wt)%, hydroxyethyl acrylate 1.5(wt)%, butyl acrylate A mixed monomer composed of 41 (wt)% ester and 6.5 (wt)% ethyl acrylate, added dropwise for 2.5 hours a...

Embodiment 3

[0057] The preparation of organosilicon-acrylate / inorganic nanocomposite emulsion comprises the following steps:

[0058] (1) Add 6.0 (wt)% of silver oxide with a particle size of 82nm to water containing 60 (wt)%, Dowfax 2A-1 emulsifier 0.20 (wt)%, EDTA0.06 (wt)% and ammonium persulfate 0.10 (wt)% in the reactor, vacuumize after stirring and dispersing, heat up to 80°C under nitrogen protection conditions, add 15(wt)% styrene monomer dropwise for 30 minutes, and keep warm for 15 minutes; obtain polymer-coated inorganic nanoparticle emulsion;

[0059] (2) In the emulsion of step (1), add dropwise water containing 46 (wt) %, 0.3 (wt) % sodium bicarbonate, 0.15 (wt) % Dowfax 2A-1, 0.5 (wt) % ammonium persulfate, 3.0 (wt) % of a mixture of methylol acrylamide and methylenebisacrylamide with a mass ratio of 2:1, 2.0 (wt) % of methacrylic acid in water and 70 (wt) % of methyl methacrylate acrylate 30(wt)%, 2.0(wt)% of hydroxyethyl acrylate, 38(wt)% of butyl acrylate, a mixed mono...

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Abstract

The invention discloses organosilicon-acrylate ester / inorganic nanometer composite emulsion as well as a preparation method and application of the composite emulsion. The composite emulsion consists of 4.0-8.0(wt)% of inorganic nanometer grains and 92-96.0(wt)% of organosilicon-acrylate ester polymers. The preparation method comprises the following steps of (1) preparing polymer-coated inorganic nanometer grain emulsion; (2) adding an acrylate ester monomer to prepare a shell polymer; (3) adding unsaturated organosilicon monomer to obtain organosilicon modified composite emulsion; (4) carrying out chemical degassing; and (5) removing residual monomers and neutralizing to obtain target products. The prepared organosilicon-acrylate ester / inorganic nanometer composite emulsion has good stability and excellent film-forming performance, modifies the thixotropy of a coating system and also has excellent settlement resistance. Water-borne coating prepared by the composite emulsion disclosed by the invention has the advantages of high adhesion force, paint film washing resistance, alkali resistance, paint film strength, surface cleanness and paint film covering force; and the volatile matter content of the coating is very low; the water-borne coating is green and environment-friendly and also has anti-bacterial property and bactericidal property.

Description

technical field [0001] The invention relates to a water-based, environment-friendly organosilicon-acrylate / inorganic nano composite emulsion and a preparation method thereof, as well as the application of the composite emulsion in exterior wall coatings. Background technique [0002] With the increasing requirements for environmental protection and the increasingly stringent regulations on VOC emissions in various countries, high-performance, low-pollution water-based emulsion coatings have become the focus of research and application. [0003] With the rise of modern high-rise buildings, the requirements for water resistance, aging resistance and stain resistance of coatings are getting higher and higher, and coatings are required to have self-cleaning properties. For outdoor decoration and high-rise buildings exposed to the outdoors for a long time, it is hoped that the anti-staining performance, anti-aging performance, self-cleaning performance and comprehensive performan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/06C08F257/02C08F265/08C08F2/44C08F2/26C08F4/40C08K3/22C09D151/06C09D151/00C09D7/12C09D5/14
Inventor 米普科许胜米怡璇许鹄飞赵怡刘敏何阳熊玉洁席锦娜
Owner NANTONG TENGLONG CHEM TECH CO LTD
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