Koichi Hagihara

Title: Koichi Hagihara: Innovator in Thermosetting Compositions

Introduction

Koichi Hagihara is a notable inventor based in Nishinomiya, Japan. He has made significant contributions to the field of polymer chemistry, particularly in thermosetting compositions. With a total of 2 patents, his work focuses on enhancing the properties of resins used in various applications.

Latest Patents

Hagihara's latest patents include innovations such as a hydroxyl polyglycidyl ether or acrylic copolymer with an anhydride copolymer. This invention aims to improve a thermosetting composition that contains a polymer with a half-esterified acid anhydride group, thereby enhancing water and weather resistance. Another significant patent involves a cationic water-dispersible resin containing quarternary ammonium groups. This resin is produced by reacting an acid-addition salt of a polymeric tertiary amine derived from a partially epoxidized polybutadiene-based polymer with an aliphatic secondary amine. The resulting cationic water-dispersible resin is particularly useful for preparing pigment paste and coating compositions in cathodic electrodeposition coating systems.

Career Highlights

Throughout his career, Koichi Hagihara has worked with prominent companies such as Nippon Paint Company, Ltd. and Nippon Oil Company. His experience in these organizations has allowed him to develop and refine his innovative ideas in polymer chemistry.

Collaborations

Hagihara has collaborated with notable coworkers, including Yoshitaka Okude and Akira Fushimi. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Koichi Hagihara's contributions to the field of thermosetting compositions demonstrate his innovative spirit and dedication to improving polymer technology. His patents reflect a commitment to enhancing material properties for practical applications.