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HIREC 450

Mainly for indoor use. One-coat type super hydrophobic coating!

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HIREC 450
HIREC450 has the same super water repellency as HIREC100, but was developed primarily for indoor use. It has good adhesion to a wide range of materials, so it is a one-coat type that can be easily applied without a primer.
The coating is white and semi-transparent (visible light transmittance approx. 5%), but because it is applied in a thin film (our recommended thickness is approx. 15μm), it is possible to see through the base.
→Painting example

Unlike HIREC100, it does not have a photocatalytic effect, so if dirt in the air adheres to the coating surface, the super water repellency will decrease.

Painting specification

process Product name Painting method
Number of coats
(times)

Film Thickness
(μm)

Standard usage
(g/m 2)

paint interval
(20℃)
Substrate adjustment Lightly sand the surface to be painted (#240 to #360), then remove grease, dirt, etc.
Wipe off with waste cloth, thinner, etc., and dry.
Painting HIREC450 air spray 1 15 120~150 -

Acrylic, polycarbonate, glass, and ceramics can be painted with the above specifications. (For other substrates, please contact us.) HIREC450 cannot be painted with a brush or roller.

Painting example

Coating durability

Contact angle in accelerated weathering test (HIREC 450)

促進耐候試験における接触角(HIREC 450)
*Compliant with JIS K5400

Examples of painting on wood

塗装比較例

On the right half where HIREC450 was applied, water beads up, showing that the surface is water repellency. HIREC450 is white and translucent, and because it is applied as a thin film (our recommended film thickness is approximately 15 μm), the visible light transmittance is 5%, and although the applied surface is whitish, the wood grain pattern can be seen through.

Example of painting a refrigerator fan

冷凍機のファン
Unpainted fan HIREC450 painted fan
HIREC has an anti-icing function that prevents frost from forming on the fan.



"HIREC” is a trademark of NTT Advanced Technology Corporation, registered in Japan, U.S. and European Patent and Trademark Office.

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