Midori Mark Co., Ltd.
Innovation that contributes to social benefits and countermeasures against aging infrastructure through a paint revolution
30-year paint, 100-year paint, sensor/functional paint, anti-infection coating
Midori Mark Co., Ltd. (Head Office: Kawaguchi City, Saitama
Prefecture; Chairman: Tsuneo Midorikawa; hereinafter referred to as “Green Mark”) is Toyo Aluminum Co., Ltd. (Head Office: Osaka City; President: Kaoru Kusumoto; ), we have developed all-inorganic paints (does not contain degradable resins) all-inorganic functional paints, sensor paints, and electronic materials using advanced organometallic decomposition methods (hereafter: Advanced MOD (R)). , National Institute of Advanced Industrial Science and Technology (AIST), Midori Mark, and Toyo Aluminum have applied for a joint patent.
Two technologies of the former Advanced Coating Technology Research Center of AIST, which has been developing technologies and materials for coating ceramics and metals without firing (600°C or higher), are based on technology transfer from AIST. , Green Mark has received two development support subsidies from Saitama Prefecture and collaborated with Toyo Aluminum to conduct basic and application development of “Advanced MOD (R)” technology.
Toyo Aluminum’s current anti-corrosion paint 1. Highly durable metallic paint “Stenshell (R)” (containing stainless steel and flake powder) is said to last for 30 years. 2. All-inorganic paint (containing stainless steel and flake powder) that does not contain resins that deteriorate in paint (urethane, epoxy, fluorine, etc.) for 30 years. , Sensor paint, infectious diseases and “drug resistant bacteria” countermeasure coating (research product), 1, 2, 3 are called “paint revolution”.
Especially with Advanced MOD(R), functional ceramics (luminous agents, photocatalysts) and metal materials, which were conventionally baked at high temperatures of 600°C or higher, can be coated at room temperature to 180°C, a process similar to paint. Therefore, it has the advantage of being able to directly coat a wide variety of materials. In addition, the stainless steel flake powder forms a “nano-layered structure” in the coating film, which has flexibility (stress relaxation) and forms a coating film with high film hardness. It has a dense structure that prevents the penetration of ultraviolet rays. For this reason, conventional all-inorganic paints, such as water glass and organic/inorganic sol-gel glass, cracked when the film thickness increased. It is characterized by the fact that glass-like cracks do not occur even when This is expected to further extend the anti-corrosion service life (possibility of 100-year paint). It is truly an innovation for the benefit of society from Japan that can be expected to play an active role in the fields of innovative
next-generation paint (I) and next-generation thick film paste for electronic materials (II).
Such long-lasting paints are widely used in anticorrosive paints for coastal and bay steel structures (bridges, cranes, etc.) in this field for “anti-aging measures for infrastructure” and “underfloor coating for vehicles in snowy regions.” I believe we can make a significant contribution. Furthermore, in the field of functional paints mentioned in 3 above, we will develop long-lasting rust preventive paints for nuclear waste drums and steel structure containers that are corroding, and metal pigments that make use of the characteristics of
all-inorganic paints. We will contribute to the construction of a safe and secure society by developing coatings that can shield (function) radiation containing (tungsten, etc.).
The all-inorganic paint developed with this patented technology does not contain the resin components (urethane, epoxy, fluorine, etc.) in Toyo Aluminum’s 30-year paint, so it is a resin-less paint with the potential to be a 100-year paint. increase. Whether it is Toyo Aluminum’s current 30-year paint, the developed 100-year paint, or the radiation shielding paint under research, high-end stainless steel flake powder is used. The unit price of the paint goes up by the amount of stainless steel powder included, but we consider stainless steel powder to be an essential raw material.
The Ministry of Land, Infrastructure, Transport and Tourism and local governments are promoting measures to extend the life of buildings and steel structures and reduce life cycle costs (LCC) as a measure against aging infrastructure (reconstruction and repair). The unit price of anticorrosion paint containing stainless steel flake powder is not cheap. However, by adopting a paint with a long service life and a long service life, it is possible to reduce the cost of repainting and the number of paint renewals. In the current bidding system, comparison is made based on the total cost of the first paint job (including paint cost).・It does not lead to cost reduction. Even if the unit price of paint is high, we believe that the adoption of durable and long-life paint that can reduce the cost of repainting and the number of paint renewals will lead to a reduction in life cycle costs. The cost of repainting and the number of paint renewals for steel structures such as marine civil engineering (ports and strait bridges) and highways (public infrastructure) are reduced at the level of the national budget, and budget cuts of tens of trillions of yen will continue into the future. can be expected. It may be necessary to change the bidding system to 30-year, 50-year LCC (life cycle cost) bidding.
Green Mark receives the following two subsidies (1) and (2) from Saitama Prefecture. The first is (1) As a manufacturer of parts for nameplates, touch switches, and touch panels, the green mark develops the technology of AIST, and uses the patented technology to transform the next-generation all-inorganic “phosphorescent” paint from commodity products to non-powered products. This is a project that develops emergency display boards/planar luminous films, functional (phosphorescent) nameplates, and tunnel “phosphorescent” paints. The all-inorganic “phosphorescence” paint is attracting attention as well as the 30-year paint containing stainless flake powder for tunnels, concrete spalling prevention, revetments, and bridge girders. In the second project (2), we are using the patented technology to research the application of anti-infection and antibacterial coatings to our own touch switches and touch panels. In cooperation with AIST, we are also conducting applied research on anti-corona coatings. In addition, the project also includes the application of antiviral and
antibacterial photocatalysts, and coatings for anti-drug resistant bacteria AMR, which will be necessary next to COVID-19.
The paint revolution plans not only to develop paints with longer service life, but also to include drone painting methods being developed overseas. Drones are expected to be used not only for painting, cleaning, and vision inspections, but also as disaster mitigation measures. For example, drones can be used to search for and remove volcanic ash that has fallen on the insulators of electric wires during volcanic eruptions, and to search for mountain tsunami damage. Therefore, as a countermeasure for the aging of coating specialists, and for disaster prevention and mitigation measures, we believe that the establishment of a training school for instructors and students of drone pilots is necessary for the national and local governments.
(Concept video in QR code ↑)
In this way, technology transfer from public institutions to private companies and subsidy research support from national and local governments are not only for private companies to implement
(practical) technology in society, but also for social benefit (public interest). It is necessary to create innovation and paint revolution. This circulation is called “Circular System for Social Benefit”, and we believe that further dissemination is necessary. Some of the technologies described in this release have been applied and developed by receiving technology transfer from the former Advanced Coating Technology Research Center of AIST.
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