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Low-cost water environmental protective paint

A functional coating, low-cost technology, applied to the coating on the exterior surface and the interior of buildings, it can solve the problems of high coating cost, air pollution, pollution, etc., and achieve the effects of wide application range, cost-effective improvement and cost reduction

Inactive Publication Date: 2005-05-11
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 after contamination, and even mildew spots are produced, which is not beautiful and will cause reproduction of harmful bacteria
Although antifungal agents and fungicides are added to some paints, their dosage is limited due to their toxicity, and antifungal agents and fungicides can only kill harmful bacteria, but cannot Removes toxins from harmful bacteria
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., all have serious damage to people's health.
[0003] Prior to this, there was a "water-based functional coating with self-cleaning, anti-mildew, sterilizing and air-purifying functions" with the application number 02112793. The price of nano anatase titanium oxide is high, resulting in high cost of coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, interior wall paint

[0018] 1) Composition:

[0019] Photocatalyst: 540g of anatase-type titanium oxide powder (made by sulfuric acid method, the grain size is 160-280nm);

[0020] Water-based binder: 525g of pure acrylic emulsion (PRIMALAC-261 of Rohm and Haas, USA);

[0021] Pigments and fillers: 45g of light calcium carbonate, 30g of talcum powder (both are common products in the market, with a particle size of 1250 mesh);

[0022] Auxiliary agent: 15g of dispersant (SN-5040 of Shenzhen Haichuan Company [abbreviated as Haichuan]), 4.5g of defoamer (Ocean’s Nopco-8034), 7.5g of thickener (Ocean’s Modicol VD), bactericide (Rohm and Haas Kathon LXE) 1.5g, preservative 3g (Ocean Nopcocide SN-215), wetting agent 7.5g (Ocean Hyonic PE-100), leveling agent 30g (Rohm and Haas Acrysol RM-2020NPR), film-forming aid 22.5 g (Texanol), 7.5 g of antifreeze (commercially available propylene glycol), 0.45 g of pH regulator (AMP-95 of Dow Company [abbreviated as Dow...

Embodiment 2

[0025] Embodiment 2, interior wall paint

[0026] 1) Composition:

[0027] Photocatalyst: 447g of anatase-type titanium oxide powder (made by sulfuric acid method, the grain size is 140-250nm);

[0028] Water-based binder: pure acrylic emulsion (Rohm and Haas, PRIMAL AC-261) 130g, silicon acrylic emulsion (SA-1502 produced by Changzhou Paint Chemical Research Institute) 120g;

[0029] Pigments and fillers: talcum powder 3g, precipitated barium sulfate 2g (both are common products in the market, particle size is 1250 mesh);

[0030]Auxiliary: Dispersant 16g (Ocean SN-5040), defoamer 3g (Ocean Nopco-8034), thickener 3g (Liencarb QP-15000H), fungicide (Rohm and Haas Kathon LXE) 1g, preservative 2g (Ocean Nopcocide SN-215), wetting agent 3g (Ocean Hyonic PE-100), leveling agent 10g (Rohm and Haas AcrysolRM-2020NPR), film-forming aid 15g (Rohm and Haas Texanol), antifreeze 5g (commercially available propylene glycol), pH regulator 0.3g (Dow AMP-95);

[0031] Water: 213g.

[00...

Embodiment 3

[0034] Embodiment 3, interior wall paint

[0035] 1) Composition:

[0036] Photocatalyst: 192g of anatase-type titanium oxide powder (made by sulfuric acid method, the grain size is 110-230nm);

[0037] Water-based binder: styrene-acrylic emulsion (Rohm and Haas PRIMAL PR-1058M) 320g;

[0038] Pigments and fillers: talcum powder 204g, light calcium 232g, heavy calcium 232g, kaolin 206g (all are common products in the market, particle size is 1250 mesh);

[0039] Auxiliary: dispersant 30g (Rohm and Haas Orotan 731A), defoamer 6g (Ocean Nopco-8034), thickener 4g (Rohm and Haas Acrysol RM-8W), preservative 4g (Ocean Nopcocide SN-215 ), fungicide (Rohm and Haas Kathon LXE) 2g, wetting agent 18g (Rohm and Haas Triton X-405), leveling agent 24g (Rohm and Haas Acrysol RM-2020 NPR), film-forming aid 48g (Rohm and Haas Texanol), antifreeze 75.2g (commercially available propylene glycol), pH regulator 1.6g (Dow AMP-95);

[0040] Water: 700g.

[0041] 2) Preparation process:

[004...

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PUM

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Abstract

A cheap aqueous paint for environment protection is used on surfaces of internal and the external of buildings. The composition of the paint is: photocatalyst the titanium oxide powder of 100-400nm 0.1-46%, water agglomerant containing the water-soluble acrylate latex, styrene-acrylic latex, silicon-acrylic latex and the mixture 10-75%. Because the titanium oxide powder has the function of photocatalysis in the proper UV ray, so it can decompose the organic matter of the air or liquid into the CO2 and the water. It is anti-mildew, bactericidal, air purification and self-clear. It is cheap so as to improve the quality valence ratio greatly.

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 produced, which is not beautiful and will cause The reproduction of harmful bacteria. Although antifungal agents and fungicides are added to some paints, their dosage is limited due to their toxicity, and antifungal agents and fungicides can only kill harmful bacteria, but cannot Eliminates residual toxins from harmful bacteria. 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.,...

Claims

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Application Information

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IPC IPC(8): C09D5/02C09D133/04
Inventor 王大志刘金华
Owner UNIV OF SCI & TECH OF CHINA
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