In recent times, there has been a growing demand for glass coating films to not only possess reliable features such as scratch resistance and stain resistance but also to offer new functionalities. Currently, our company is advancing research and development in the following 5 coating technologies, by adjusting and controlling the composition, structure, and organization of a wide range of coating solutions/films at the nano-level, without being confined to the sole use of polysilazane:
(1) Achieving long-term self-cleaning through a long-lasting ultra-hydrophilic technology.
(2) Electrostatic discharge prevention (anti-static function) technology to combat static electricity for anti-fouling purposes.
(3) Oleophilic technology to make fingerprints and grease less noticeable.
(4) Antiviral/antibacterial/antifungal/deodorizing technology that combines excellent immediacy and long-lasting function life.
(5) Development of new functionalities through nano-bubble technology introduction.
In number 1, by appropriately designing and controlling the composition, organization, and structure of the coating film, we will achieve ultra-hydrophilicity with a water contact angle of less than 10°, ensuring long-lasting, long-term self-cleaning capabilities. We will apply this coating to surfaces such as the bodies of vehicles used outdoors, such as trains, cars, and airplanes, as well as solar panel surfaces and building windows.
Furthermore, measures have been taken to address the occurrence of ion deposition, which can be a significant issue with glass coating films.
In number 2, by dispersing conductive nanoparticles within the glass coating film, a high-resistance conductive path (108 to 1011 Ω/□) is formed to suppress or prevent the adhesion of dust and dirt caused by static electricity. Normal glass coating films are electrically insulating, making them prone to static charge buildup and adhesion of dust and dirt. Such adhesion can accelerate surface deterioration and make it difficult to remove dirt easily.
In number 3, by introducing polymer brush components into the glass coating film, the oil contact angle is significantly reduced (oleic acid contact angle= ≤ 20°), resulting in improved oleophilicity to make fingerprints and grease less noticeable. Additionally, efforts are made to improve hydrophilicity and facilitate the removal of fingerprints and grease even with water washing.
In number 4, by introducing silver and copper ions into the glass coating film and adjusting and controlling their diffusion rate, we have discovered the potential to deliver antiviral, antibacterial, antifungal, and deodorizing functions both long-lasting and with immediate effects. We are aiming at a viral/bacterial inactivation speed of within 30 minutes, ideally within 10 minutes. The product effect lasting life is under consideration for a minimum of 3 months and a maximum of 10 years, considering the application field and its cost. This coating agent will contribute to a safer Society and enable significant business expansion. Therefore, we are exploring and recruiting business partners who can co-create together with us.
As for number 5, we are developing technology to introduce numerous nano-bubbles into the glass coating film. By doing this, we are considering the possibility of creating new optical and electrical unique properties.
