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Coating capable of controlling haze

A technology of water-soluble paint and composition, applied in the field of paint, can solve problems such as depression, no literature reports, and affecting reproductive ability, etc., and achieve the effect of easy layout, good control effect, and high activity

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

[0036] 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-neck glass reactor equipped with a stirrer, a condenser and a thermocouple, and the mixture was heated to 50 ℃ and homogenize. At this temperature, 9.3 parts by weight of isophorone diisocyanate were uniformly added within 30 minutes. Then 0.5 parts by weight of acetone was added. The temperature was maintained at 50° C. until an NCO content of 6.8-7.2% (relative to the solution) was reached. As soon as this NCO content was reached, 1.88 parts by weight of dimethylolpropionic acid, 1.04 parts by weight of dimethylisopropylamine and 0.5 parts by weight of acetone were added. The temperature was then maintained at 50° C. until an NCO content of 3.1-3.4% (relative to the solution) was reached. Once this NCO content was reached, the heat was turned off and 48.0 parts by weight of deionized water were added within 10 mi...

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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 comprises a carrier, an active ingredient and cocatalysts. 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 paints, in particular to a paint for preventing haze. Background technique [0002] Haze weather is a state of air pollution. Haze is a general expression of the excessive content of various suspended particulate matter in the atmosphere, especially PM2.5 (particulate matter with an 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 composed of a large number of tiny water droplets or ice crystals suspended in the air near the surface. It mostly occurs in autumn and winter, and is the product of condensation (or sublimation) of water vapor in the air near the surface. The existence of fog will reduce the transparency of the air and deteriorate the visibility. If the horizontal visibility of the target is reduced to within 1000 meters, the weather phenomenon of water vapor condensation (or sublima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D7/12
Inventor 沈秋
Owner WUXI QIAOYANG MACHINERY MFG