Sumitomo Chemical provides a wide variety of functional chemical products that contribute to reducing the environmental impact as well as to conserving energy and natural resources. Such products include alumina and aluminum used for energy-efficient products, high-performance polymer additives and rubber chemicals, automotive diesel particulate filters enabling better exhaust emission controls, synthetic rubber for fuel efficient tires, and super engineering plastics and materials for lithium-ion secondary batteries used in electronic components and next-generation vehicles.
We supply specialty alumina such as low-soda alumina and alumina with a purity of over 99.99%. Low-soda alumina is used for liquid crystal display glass, IC packages, and automobile spark plugs.
High-purity alumina is used for lithium-ion secondary battery materials; sapphire substrates for LEDs, which are expected to become the next generation of light sources; and ceramic parts of semiconductor manufacturing equipment.
We import aluminum ingots produced by our aluminum development projects in New Zealand, Australia, and Brazil, and provide a stable supply in Japan. Our high-purity (99.99% or higher) aluminum is used in highly functional products, such as aluminum foils for electrolytic capacitors, liquid crystal displays, and wiring materials for semiconductors.
This material is used in the manufacture of tires, wood adhesives, flame retardants, and ultraviolet ray absorbants.
Synthetic rubbers exhibit a variety of outstanding characteristics, including elasticity, oil and weather resistance and anti-wear properties. In addition to automotive parts such as tires, window and door seals, hoses, and gaskets and bushings. Synthetic rubbers also find uses in construction materials, shoes and other applications.
Super Engineering Plastics
Super engineering plastics are high-performance resins that have excellent heat resistance, strength, chemical resistance, and processability. As materials that meet the needs for lighter and finer articles, super engineering plastics include liquid crystalline polymer, which is used in the manufacture of electrical and electronic products and is expanding into applications in the industry and automobile areas, and polyethersulfone, which, in addition to electrical and electronics applications, is also being used as a carbon fiber composite in aircraft, as a high-performance separation membrane material, and as a heat-resistant coating.