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A technology of architectural coatings and polyurethane, which is applied in the direction of polyurea/polyurethane coatings, anti-corrosion coatings, coatings, etc., can solve problems such as organic solvent volatilization, environmental and human health hazards, and achieve convenient operation and processing, good gloss, and reduced emissions Effect
Inactive Publication Date: 2017-09-29
FOSHAN ZHENGLUE INFORMATION TECH CO LTD
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Abstract
Description
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Problems solved by technology
[0002] At present, solvent-based two-component polyurethane coatings are mainstream products, and a large amount of organic solvents volatilize during its production and construction, causing serious harm to the environment and human health.
Method used
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Embodiment 1
[0021] A waterproof polyurethane architectural coating prepared by mixing the following components by weight percentage,
[0022] A component:
[0023] 70 parts of water-based acrylic resin
[0024] Lauryl Benzoate 3 parts
[0025] Nano silicon dioxide 2 parts
[0026] Color paste 20 parts
[0027] Silicon carbide whiskers 3 parts
[0028] Silicone defoamer 0.3 parts
[0029] Wetting and leveling agent 0.3 parts
[0030] 2-Hydroxy-4-methoxybenzophenone 0.2 parts
[0031] Thickener 0.3 parts;
[0032] B component:
[0033] Water dispersible isocyanate 50 parts.
Embodiment 2
[0035] A water-based two-component polyurethane coating is prepared by mixing the following components by weight percentage,
[0036] A component:
[0037] 66 parts of water-based acrylic resin
[0038] Lauryl benzoate 2 parts
[0039] Color paste 24 parts
[0040] Silicon carbide whiskers 3 parts
[0041] Nano silicon dioxide 4 parts
[0042] Silicone defoamer 0.2 parts
[0043] Wetting and leveling agent 0.4 parts
[0044] 0.3 parts of 2-hydroxy-4-methoxybenzophenone
[0045] 0.1 part of polyurethane thickener;
[0046] 0.2 parts of ethyl methyl cellulose ether of 80,000 mpa.s
[0047] B component:
[0048] Water dispersible isocyanate 54 parts.
[0049] Wherein, the above-mentioned aqueous hydrocarbon-based acrylic resin has a hydrocarbon-based content of 2-2.5%.
[0050] Wherein, the solid content of the above-mentioned water-dispersible isocyanate is 80-85%, and the -NCO content is 20%.
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Abstract
The invention discloses waterproof polyurethane building paint, which is prepared from the following ingredients through being mixed in parts by weight: an ingredient A (60 to 80 parts of waterborne cyanoacrylate resin, 2 to 6 parts of dodecanol benzoate, 2 to 5 parts of nanometer silicon dioxide, 15 to 40 parts of color pulp, 2 to 5 parts of silicon carbide whisker, 0.2 to 0.4 part of organic silicon defoaming agents, 0.2 to 0.4 part of wet flatting agents, 0.2 to 0.4 part of 2-hydroxyl-4-methoxybenzophenone and 0.2 to 0.4 part of thickening agents) and an ingredient B (40 to 60 parts of water-dispersible isocyanate). The waterborne cyanoacrylate resin and water-dispersible isocyanate are used as major raw materials; water is used as a dispersion medium; the discharging of the organic solvents or organic contaminants can be reduced to the maximum degree; the nanometer silicon dioxide is properly added, so that the dispersion mass distribution in the paint is more uniform; after the spray coating, the glossiness is higher.
Description
technical field [0001] The invention relates to the field of architectural coatings, in particular to a waterproof polyurethane architectural coating. Background technique [0002] At present, solvent-based two-component polyurethane coatings are mainstream products, and a large amount of organic solvents volatilize during its production and construction, causing serious harm to the environment and human health. In recent years, the research and development of waterborne two-component polyurethane coating technology has become a hot spot. It uses water as the dispersion medium, which minimizes the discharge of organic solvents and organic pollutants, saves energy, has the advantages of non-combustibility, low odor, and convenient operation and processing. At the same time, it has solvent-based two-component polyurethane Therefore, the development of waterborne two-component polyurethane coatings has broad application prospects. Contents of the invention [0003] The obje...
Claims
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Application Information
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