Functional Materials Business

Nippon Kayaku manufactures and develops various high-purity epoxy resins for high demanding markets such as the electrical and electronic fields, in which a high degree of electrical reliability is required. In particular, we develop epoxy resins in line with the technological trends focused on products around semiconductor packages (e.g., epoxy resins for semiconductor encapsulation and substrates).
Our line-up consists of Novolac type epoxy resins with special features and properties that derive from their unique structures.

There is a need to realize the characteristic of a low dielectric loss tangent to ensure there is no delay in communication signals to resins for electronic parts. This is due to the miniaturization and improvement in functionality of electronic equipment and the increase in speed and capacity of communications in recent years. In particular, there is an increasing market need for low dielectric loss tangent materials required for an increase in the speed and capacity of communications – from smartphones and other devices to severs that control and manage information. This is to support the fifth-generation telecommunications standard 5G that is expanding and also the future beyond that. We have developed and industrialized new maleimide resins to meet these market needs. Unlike existing maleimide compounds, our maleimide resins are highly soluble in solvents and demonstrate strong toughness even after hardening. They are materials that realize a low dielectric loss tangent while satisfying the requirements of resins for electronic materials that demonstrate high flame retardance.

Nippon Kayaku has a lineup of various unique characteristic-possessing acrylate monomers and epoxy acrylates, urethane acrylates and other acrylate oligomers as the KAYARAD Series of UV-curable resins. In particular, the series has a strong track record of achievements because we excel in technology that gives contradictory flexibility to polyfunctional acrylates with excellent hardening properties. In addition, we also handle the special methacrylate "KAYAMER series" that improves the adhesion performance to inorganic materials, the acid-modified epoxy acrylate with developability, and the "KAYACURE series" of photopolymerization initiators and sensitizers. These are suitable as materials for various coating agents, adhesives and molded products.

SU-8 3000CF Dry Film Resist (DFR) is a negative type permanent film photoresist that can produce rectangular shapes with a high aspect ratio through the photolithography process. It has a structure in which the resist layer is laminated with a cover film and a support film. This eliminates the solvent removal processes and contributes to process simplification. SU-8 3000CF DRF is suitable for forming hollow structures (cavity structures) and is widely used in electronic device applications.

We engage in the development, manufacture and marketing of chemicals used in each manufacturing process for high resolution and high performance displays, semiconductors and electronic components markets. Harnessing our capabilities in proprietary development, we have established a product lineup with excellent performance that is unrivaled by peers. This product lineup contributes to the development of the entire electronics industry.

You can download technical information on thermosetting resins and UV-curable resins. Please ask directly for more detailed information.

Functional Materials Division
+81-3-6731-5268