Tsutomu Katsumata

Title: Tsutomu Katsumata: Innovator in Polyalkylene Terephthalate Production

Introduction

Tsutomu Katsumata is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the production of polyalkylene terephthalate. With a total of 11 patents to his name, Katsumata's work has had a considerable impact on the industry.

Latest Patents

Katsumata's latest patents include a process for producing polyalkylene terephthalate and a process for producing polyalkylene terephthalate molding. The first patent outlines a method that involves introducing a molten prepolymer of polyalkylene terephthalate into a polymerization reactor. This prepolymer consists of 70 mol % or more of ethylene terephthalate or 1,4-butylene terephthalate repeating units. The process includes discharging the prepolymer from holes of a perforated plate and polymerizing it under reduced pressure while allowing it to fall along a support surface at specific temperature conditions. His second patent focuses on the preparation of acylated hexaazaisowurtzitane derivatives, showcasing his versatility in polymer applications.

Career Highlights

Throughout his career, Katsumata has worked with prominent companies such as Asahi Kasei Kogyo Kabushiki Kaisha and Asahi Kasei Corporation. His experience in these organizations has allowed him to refine his expertise in polymer production and innovation.

Collaborations

Katsumata has collaborated with notable colleagues, including Tetsuro Dozono and Makoto Honda. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Tsutomu Katsumata is a distinguished inventor whose work in polyalkylene terephthalate production has led to significant advancements in the field. His innovative processes and collaborations highlight his commitment to enhancing polymer technology.