Toagosei Annual R&D Report “TREND” – Issue No. 28

Since UV-curable adhesives are solvent-free and can be cured at room temperature in a short time, they have characteristics such as lower environmental impact and higher productivity compared to other adhesives. I

n recent years, market needs for environmentally friendly adhesives have been increasing, and the market and application areas for UV-curable adhesives have been steadily expanding. Furthermore, with the recent spread of compact and power-saving UV-LEDs, UV-curable adhesives are now available at DIY stores, etc., and are becoming more familiar to general consumers.

We have been developing and marketing UV-curable adhesives for many years, and these products are used in a ide range of applications, including industrial materials such as paper, film, and molded plastic products, and high value-added products such as medical components, electronic materials, and optical components (Fig. 1).

This article introduces our new UV-curable adhesives with “shadow curability,” which can cure even in shadowed areas that are not directly exposed to light during UV irradiation.

In recent years, with the widespread adoption of fifth-generation mobile communication systems (5G) and electric vehicles (EVs), semiconductor technology has been rapidly advancing, and the demand for further miniaturization and higher performance of electronic devices has been increasing. Accordingly, in the field of semiconductor packaging, efforts have been made to develop materials with narrower wiring pitches and high durability suitable for power semiconductor applications, and performance requirements for ion-catching agents have become increasingly sophisticated.

To meet these next-generation needs, we have developed a novel inorganic ion catcher, IXE®-700H. IXE®-700H exhibits excellent ion-catching performance over a wide range of pH conditions, and it has been experimentally confirmed that adding it to epoxy resins significantly improves moisture resistance reliability.

In this paper, we describe in detail the features and outstanding ion-catching performance of the novel inorganic ion catcher IXE®-700H.