Masatoshi Kumagai

Title: Masatoshi Kumagai: Innovator in Thermoplastic Elastomers

Introduction

Masatoshi Kumagai is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of materials science, particularly in the development of thermoplastic elastomers. His innovative work has implications for various industries, especially automotive manufacturing.

Latest Patents

Kumagai holds a patent for a thermoplastic elastomer, which includes a unique composition and production process. The elastomer comprises 10-90 wt. % of polypropylene with a syndiotactic structure and 90-10 wt. % of an ethylene-propylene-nonconjugated diene copolymer rubber and/or ethylene-propylene copolymer rubber, which has been partially crosslinked. This invention is particularly useful for creating automotive components such as bumper fascias, mud guards, and trim skin materials. The elastomer exhibits excellent flexibility, rubber elasticity, mechanical strength, and an appealing external appearance, while being free from bleeding and fogging.

Career Highlights

Kumagai is associated with Mitsui Toatsu Chemicals, Incorporated, where he has been able to apply his expertise in polymer science. His work has contributed to advancements in material properties that are crucial for automotive applications.

Collaborations

Kumagai has collaborated with notable colleagues, including Kazuhiko Masuda and Sachio Yokote. These partnerships have fostered innovation and development in the field of thermoplastic elastomers.

Conclusion

Masatoshi Kumagai's contributions to the field of thermoplastic elastomers highlight his role as an influential inventor. His patented innovations continue to impact the automotive industry positively.