Kohei Mitani

Title: Kohei Mitani: Polymer Particle Innovations

Introduction

Kohei Mitani is an inventor based in Osaka, Japan, whose patent work focuses on fine resin particles and their applications. His inventions address material properties such as softness, brittleness, heat resistance, and optical performance. Mitani is associated with Sekisui Kasei Co., Ltd., and has 2 patents in the information provided.

Latest Patents

Mitani’s listed patent work includes inventions concerning fine resin particles, coating-film softening agents, paint matting agents, stress relievers for curable resins, light diffusers, light-diffusing resin compositions, and resin compositions.

One invention describes fine resin particles designed to combine softness with improved resistance to brittleness. The particles contain a copolymer incorporating long-chain alkyl (meth)acrylate units, short-chain alkyl acrylate units, a vinyl monomer with a high glass-transition temperature, and a multifunctional (meth)acrylate monomer. The stated applications include paint compositions and cosmetics.

Another invention concerns fine resin particles intended for use as anti-blocking agents and in other applications. It addresses resistance to heat during resin compounding, reduced residual unreacted monomers, and a color tone suitable for optical components requiring high transparency. Its copolymer includes a cyclic-structure monofunctional vinyl monomer, an alkyl (meth)acrylate monomer, a multifunctional (meth)acrylate monomer, and a multifunctional thiol. The specified alkyl (meth)acrylate component forms a polymer with a glass-transition temperature of 50°C or lower.

Career Highlights

The available information identifies Mitani as an inventor working in Osaka and associates him with Sekisui Kasei Co., Ltd. His patent contributions focus on polymer materials engineered for practical performance in coatings, resin products, and optical applications.

Collaborations

Kohei Tanaka is identified as Mitani’s coworker. The information provided does not specify particular joint patents or projects between them.

Conclusion

Kohei Mitani’s listed inventions demonstrate a focus on fine resin particles that balance mechanical properties, processing durability, and optical suitability across a range of material applications.