We offer a photocatalytic dirt-protective coating agent. When applied on the exterior walls of buildings, for example, this agent protects them from dirt by facilitating the decomposition of oily substances, etc. on the surface (patented by Kawasaki Heavy Industries, Ltd. under patent numbers 2918112, 3122082, 3055684, etc.).

We have been recommending this photocatalytic agent mainly to our clients in the housing industry, construction material industry, paint industry and building reform industry, to be used for the exterior walls, roofs, transparent ceiling panels, etc. of buildings. These clients have reported back on the excellent reliability of this product.

Main products
  • Photocatalytic coating agent
  • Kawasaki Trading, Co., Ltd.

What is a photocatalyst?

A photocatalyst is a substance that triggers a chemical reaction that facilitates the decomposition of organic matter when exposed to light (ultraviolet rays at the wavelength of 400nm or below) but is not changed itself by the reaction. Titanium dioxide is one of the most commonly used photocatalysts.

Self-cleaning effect

Titanium dioxide photocatalyst, when exposed to light, increases the hydrophylicity of the surface to which it is applied. This facilitates the decomposition of organic matter that adheres to the surface and makes it easier to remove by rainwater, helping keep the surface clean. This is called the self-cleaning effect.


  • Buildings (exterior walls, transparent ceiling panels, roofs, tanks, station buildings, etc.)
  • Road and transportation facilities (sidewalls, soundproof panels, soundproof walls, etc.)
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