Keishiro Igi

Title: Keishiro Igi: Innovator in Polycarbonate Resin Technology

Introduction

Keishiro Igi is a notable inventor based in Kurashiki, Japan. He has made significant contributions to the field of polymer technology, particularly in the development of polycarbonate resin compositions. With a total of nine patents to his name, Igi's work has had a considerable impact on various applications in the industry.

Latest Patents

Igi's latest patents include a polycarbonate resin composition that features a unique copolyester film. This copolyester film comprises a dicarboxylic acid component that consists of 100 to 85 mole percent of terephthalic acid. The diol component includes 65 to 97 mole percent of 1,4-butanediol and 3 to 35 mole percent of a polyethylene glycol with a molecular weight ranging from 106 to 550. The copolyester exhibits a reduced viscosity between 0.8 to 1.4 dl/g when measured at a concentration of 0.5 g/dl in a 1:1 solvent mixture of phenol and tetrachloroethane at 30 degrees Celsius. Additionally, the copolyester has a main endothermic peak with a peak maximum temperature between 160 degrees Celsius and 200 degrees Celsius, along with at least one subsidiary endothermic peak. The hot melt adhesive derived from this copolyester film demonstrates a high initial modulus of elasticity at elevated temperatures, enhancing its processability while maintaining essential adhesive properties.

Career Highlights

Throughout his career, Keishiro Igi has worked with prominent companies such as Kuraray Co., Ltd. and Idemitsu Petrochemical Co., Ltd. His experience in these organizations has allowed him to refine his expertise in polymer science and contribute to innovative solutions in the industry.

Collaborations

Igi has collaborated with notable colleagues, including Masao Ishii and Yoshifumi Murata. These partnerships have fostered a collaborative environment that has led to advancements in their respective fields.

Conclusion

Keishiro Igi's contributions to polycarbonate resin technology and his innovative patents highlight his role as a significant inventor in the industry. His work continues to influence the development of advanced materials and applications.