Emulsion type coating

Abstract

A heat-insulating coating is often applied to the surface of buildings. As the surface of the building becomes soiled, the reflectance of light declines, heat is more easily absorbed, and the heat-insulating effect declines. The present invention provides a coating that can greatly reduce decomposition of resins and is easy to apply, it being the objective to prevent soiling and provide heat insulation. A coating composed of organic hollow balloons A having photocatalyst microparticles fixed on the surface by thermal fusion, organic hollow balloons B having microparticles of other than a photocatalyst fixed on the surface by the same method, an organic resin, colloidal silica, and water, wherein the specific gravity of the organic hollow balloons B is greater than that of the organic hollow balloons A.

Description

technical field [0001] The invention relates to an emulsion paint. Background technique [0002] Recently, due to the reduction of air-conditioning costs of buildings and the reduction of carbon dioxide caused by air-conditioning, buildings are increasingly insulated. Since it is difficult to renovate walls and roofs in terms of cost, etc., coating of heat-shielding paints (including paints that selectively reflect infrared rays) on the surfaces is being carried out sufficiently. [0003] As such a heat-shielding paint, a hollow body such as glass or silicone rubber having a low heat transfer coefficient is often mixed. The interior of the hollow body is approximately air or vacuum. In addition, since the hollow body itself is very small (10 to 600 μm), it hardly cracks. [0004] In addition, the roof and wall surfaces of buildings are naturally exposed to outside air, and are mostly polluted by dust and soot. When the surface is polluted, the reflectivity of light decre...

AI Technical Summary

Problems solved by technology

[0008] However, since the substance of this patent document 1 oxidatively decomposes the organic matter by the photocatalyst, it needs to be handled when it is used in an organic coating, but there is no such description at all.

In addition, it is not considered that the photocatalyst is fixed (fixedly attached) in the hollow body with a common adhesive, and the adhesive is oxidized and decomposed, and it is doubtful whether it can be put into practical use.

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