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Coating capable of controlling haze

A technology of smog and paint, applied in the field of paint, can solve problems such as unreported literature, depression, affecting reproductive ability, etc., and achieve good control effect, high activity, and easy to arrange.

Inactive Publication Date: 2016-01-06
WUXI QIAOYANG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] (4) Not conducive to children's growth
In addition, due to the weak light and the resulting low air pressure in foggy days, some people will experience laziness and depression in foggy days
[0016] (6) Affect reproductive ability
[0019] At present, the prevention and control measures for smog only use air purifiers or air conditioners to purify the air indoors. There is no literature report on the self-purification function of wall paint.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 20.36 parts by weight of polycarbonate diol, 6.5 parts by weight of acetone and 0.004 parts by weight of dibutyltin dilaurate were introduced into a four-necked glass reactor equipped with a stirrer, condenser and thermocouple, and then the mixture was heated to 50 ℃ and homogenize. At this temperature, 9.3 parts by weight of isophorone diisocyanate was uniformly added within 30 minutes. Then 0.5 parts by weight of acetone was added. The temperature is maintained at 50°C until an NCO content of 6.8-7.2% (relative to the solution) is reached. Once the NCO content is reached, 1.88 parts by weight of dimethylolpropionic acid, 1.04 parts by weight of dimethylisopropylamine, and 0.5 parts by weight of acetone are added. Then, the temperature is maintained at 50°C until an NCO content of 3.1-3.4% (relative to the solution) is reached. Once the NCO content is reached, the heating is turned off, and 48.0 parts by weight of deionized water are added within 10 minutes. Then, a...

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PUM

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Abstract

The invention discloses a water-soluble coating composition capable of controlling haze. The coating comprises A) water-soluble polyurethane with solid content of 30-45wt%, B) 15-25wt% of polyisocyanate, C) effective quantity of pigment, D) 2-5% of catalyst and E) the balance of water, wherein water-soluble polyurethane has number-average molecular weight Mn of 500-20000, weight-average molecular weight Mw of 20000-500000, hydroxyl value of 0-150mg KOH / g and acid value of 15-35mg KOH / g; polyisocyanate has at least partially closed isocyanate groups. The catalyst can be arranged in closed venues or sprayed on the building facades and can achieve good control effects on the haze in a large range.

Description

Technical field [0001] The invention relates to the technical field of paint, in particular to a paint for preventing and controlling smog. Background technique [0002] Haze weather is a state of atmospheric pollution. Haze is a general expression of the excessive content of various suspended particulate matter in the atmosphere, especially PM2.5 (particulate matter with aerodynamic equivalent diameter less than or equal to 2.5 microns) is considered to cause haze The "culprit" of the weather. [0003] Fog is an aerosol system consisting of a large number of tiny water droplets or ice crystals suspended in the air near the ground. It mostly occurs in autumn and winter and is the product of condensation (or sublimation) of water vapor in the air near the ground. The presence of fog will reduce air transparency and worsen visibility. If the horizontal visibility of the target is reduced to within 1000 meters, the weather phenomenon of condensation (or sublimation) suspended in the...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12
Inventor 沈秋
Owner WUXI QIAOYANG MACHINERY MFG