HighChem Co., Ltd. (Headquarters: Minato-ku, Tokyo; President & CEO: Taka Ushio; hereinafter "HighChem"), a global chemical trading company and manufacturer, has developed and commercialized a "Highly Thermally Conductive Sheet" with thermal conductivity exceeding 15W/m･K.​​​​​ This development was achieved in collaboration with a Japanese materials development company (hereinafter "partner company"). Additionally, ​​the company will offer customized products combining thick copper substrates for high current applications such as IGBT (Insulated Gate Bipolar Transistor) with the highly thermally conductive sheets.​

Power devices used in home appliances such as air conditioners and refrigerators, electric vehicles (EV), high-output LED, trains, and solar power generation systems are generating increasing amounts of heat as they become smaller, lighter, and more energy-efficient, making thermal management materials increasingly important. In particular, thermally conductive sheets play a crucial role in efficiently dissipating heat by filling and adhering the space between heat-generating IC (Integrated Circuit) chips and heat sinks. These materials require high thermal conductivity, adhesion, and flexibility, making the development of higher-performance products urgent.​​​​​​

Conventional thermal management materials are typically ceramic-based, requiring sheet thicknesses of 0.3 millimeters to 1.0 millimeters, which limits design flexibility and poses cost challenges. The "Highly Thermally Conductive Sheet" jointly developed by HighChem and its partner company uses special resins to achieve sheet thicknesses of 0.05 to 0.1 millimeters, significantly thinner than conventional ceramic products, enabling lighter weight, higher design flexibility, and lower costs. Furthermore, through proprietary manufacturing technology from HighChem and its partner company, the sheet incorporates ceramic powder into the resin matrix to ​​​​​​​​achieve thermal conductivity exceeding 15W/m･K while maintaining strong adhesion and insulation properties.​​​​​​

Moreover, the company can provide customized manufacturing of combinations featuring thick copper substrates for high current applications, such as IGBT, with highly thermally conductive sheets, enabling thermal management solutions tailored to customer needs.​​

HighChem operates as a chemical trading company and manufacturer, handling a broad range of products and technologies—from life science fields such as pharmaceuticals, food, and agrochemicals to cutting-edge electronic materials—in its trading division. In its sustainability division, which focuses on manufacturing functions, HighChem owns four research centers and a catalyst mass production plant in Japan and China. Building on its C1-based SEG® technology with a licensed annual production capacity of 10 million tons, the company is advancing the development and commercialization of decarbonization technologies that use CO2 as a raw material, along with efforts in biochemical technologies and battery system development. HighChem will continue to expand its business globally with innovative products, technologies, and services at its core.​​​ ​​ ^​ ​​

Company Name: HighChem Co., Ltd.
Location: 11th Floor, Tokyo Toranomon Global Square, 1-3-1 Toranomon, Minato-ku, Tokyo
President: Taka Ushio
Business Overview: Import/export and sales of chemicals, contract manufacturing, technology licensing-related operations, catalyst manufacturing and sales, biodegradable materials sales, etc.

For more information, please contact:
＜HighChem Co., Ltd. Public Relations office＞
Ms. Kuroiwa (+81-90-6539-4213) TEL: +81-3-5251-8580 E-mail: koho@highchem.co.jp