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Aqueous functional coatings possessing effects of self-cleaning, anti mold, sterilization and purifying air

A technology for purifying air and functional coatings, applied to coatings on exterior surfaces and inside buildings, can solve problems such as contamination, unsightly, and pollution

Inactive Publication Date: 2003-10-01
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the coatings used on the interior and exterior surfaces of buildings are easily contaminated by various stains (such as: oil, smoke, fruits, vegetables, etc.), and it is difficult to remove them after contamination, and even mildew spots are produced, which is not beautiful but also causes The reproduction of harmful bacteria; although some paints are added with anti-mold fungicides, the amount of anti-mold fungicides is often limited due to their own toxicity, and anti-mold fungicides often can only kill harmful bacteria, but cannot remove harmful bacteria. Bacterial toxins
In addition, the air pollution in the indoor and outdoor environments where people work and live is becoming more and more serious. Nitrogen oxides (NOx) emitted by vehicles and industrial production processes x ), carbon monoxide (CO), sulfur dioxide (SO 2 ), etc., indoor air pollution caused by toxic gases (such as formaldehyde) released by furniture and decoration materials, and exhaust gas generated by smoking, etc., the existing coatings are helpless

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0015] Example 11) Composition: Photocatalyst: 30% of nano-anatase titanium oxide (made by sulfuric acid method, particle size is 10-80nm) Water-based binder: 35% of acrylate emulsion (United Carbide Co., Ltd. UCAR U-4552W,

[0016] Solid content 47%) Pigments: light calcium carbonate 3%, talcum powder 2% (both are common products in the market, particle size is below 800 mesh) Auxiliary: dispersant 1% (SN of Shenzhen Haichuan Company [referred to as Haichuan] -5040), defoamer 0.3% (Ocean

[0017] Nopco-8034), thickener 3% (Ocean Modicol VD), preservative 0.2% (Ocean Nopcoeide

[0018] SN-215), wetting agent 0.3% (Hyonic PE-100), leveling agent 2% (Eastman [referred to as

[0019] Texanol of Eastman], 2% (commercially available propylene glycol) of film-forming aid, appropriate amount of pH regulator (Dow Corporation)

[0020] Division [referred to as Dow] AMP-95) and the rest is water. 2) Preparation process:

[0021] First add water (accounting for abo...

Embodiment 21

[0028] Example 21) Composition: Photocatalyst: 10% nano-anatase titanium oxide (made by sulfuric acid method, particle size is 20-100nm); Solid content 54~57%); Pigments and fillers: 7.5% of ordinary titanium dioxide, 8% of light calcium carbonate, 3% of talc, 3% of montmorillonite (all are common in the market

[0029] See the product, the particle size is below 800 mesh); additives: dispersant 0.6% (Ocean SN-5040), defoamer 0.3% (Ocean Nopco-8034), thickener 0.3%

[0030] (United carbon QP-15000H), preservative 0.2% (Hai Chuan Nopcocide SN-215), wetting agent 0.3% (sea

[0031] Chuan Hyonic PE-100), leveling agent 1% (Eastman Texanol), film-forming aid 2% (commercially available propylene glycol),

[0032] Appropriate amount of pH adjuster (Dow AMP-95); the rest is water. 2) Preparation process:

[0033] First add water (accounting for about 15% of the total amount of paint) into the seasoning tank of the high-speed disperser, and then add three componen...

Embodiment 31

[0040] Example 31) Composition: Photocatalyst: 46% of nano-anatase titanium oxide (made by sulfuric acid method, particle size is 5-60nm); water-based binder: 32% of silicone modified acrylate emulsion (using acrylate emulsion blended with silica sol

[0041] solid content 50-56%); pigments and fillers: diatomite 1% (a common product in the market, particle size is below 800 mesh); additives: dispersant 1% (Ocean SN-5040), defoamer 0.3 % (Ocean Nopco-8034), thickener 0.3%

[0042] (United carbon QP-15000H), preservative 0.2% (Hai Chuan Nopcocide SN-215), wetting agent 0.6% (sea

[0043] Chuan Hyonic PE-100), leveling agent 1% (Eastman Texanol), film-forming aid 2% (commercially available propylene glycol),

[0044] Appropriate amount of pH adjuster (Dow AMP-95); the rest is water. 2) Preparation process:

[0045] First add water (accounting for about 10% of the total amount of paint) into the seasoning tank of the high-speed disperser, and then add three comp...

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Abstract

A functional water paint with self-cleaning, antimildew, bactericiding and air-cleaning functions for building contains (5-100)-nm anatase-type titanium oxide as photocatalyst (10-46%) and water-soluble resin or polymer emulsion or silicon sol or their composition as water adhesive (26-35%). It features that the various organic substances in the air or water in contact with its surface can be decomposed into CO2 and water. Its advantages are high effect and safety and durable acting.

Description

Technical field: [0001] This invention relates to coatings for interior and exterior surfaces of buildings. Background technique: [0002] At present, the coatings used on the interior and exterior surfaces of buildings are easily contaminated by various stains (such as: oil, smoke, fruits, vegetables, etc.), and it is difficult to remove after contamination, and even mildew spots are formed, which is not beautiful but also causes The reproduction of harmful bacteria; although some paints are added with anti-mold fungicides, the amount of anti-mold fungicides is often limited due to their own toxicity, and anti-mold fungicides often can only kill harmful bacteria, but cannot remove harmful bacteria. Bacterial toxins. In addition, the air pollution in the indoor and outdoor environments where people work and live is becoming more and more serious. Nitrogen oxides (NOx) emitted by vehicles and industrial production processes x ), carbon monoxide (CO), sulfur dioxide (SO 2 )...

Claims

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Application Information

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IPC IPC(8): C09D5/02
Inventor 王大志刘金华
Owner UNIV OF SCI & TECH OF CHINA
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