Keiji Mitarai

Title: Keiji Mitarai: Innovator in Waste Water Treatment and Polyamine Production

Introduction

Keiji Mitarai is a notable inventor based in Yamaguchi, Japan. He has made significant contributions to the field of chemical engineering, particularly in the treatment of waste water and the production of polyethylenepolyamine. With a total of 6 patents to his name, Mitarai's work has had a lasting impact on industrial processes.

Latest Patents

Mitarai's latest patents include a method for treating amine-containing waste water. This innovative method involves conducting the waste water to active carbon, which effectively removes harmful substances. Another significant patent is for a process for producing polyethylenepolyamine from ethylene dichloride and aqueous ammonia. This process entails reacting ethylene dichloride with ammonia and continuing the reaction in the presence of at least one kind of amine when the overall conversion of ethylene dichloride has reached 25 to 85%.

Career Highlights

Throughout his career, Keiji Mitarai has worked with prominent companies such as Toyo Soda Manufacturing Co., Ltd. and Tosoh Corporation. His experience in these organizations has allowed him to develop and refine his innovative techniques in chemical processing.

Collaborations

Mitarai has collaborated with esteemed colleagues, including Sadakatsu Kumoi and Yukihiro Tsutsumi. These partnerships have contributed to the advancement of his research and the successful implementation of his patented methods.

Conclusion

Keiji Mitarai's contributions to waste water treatment and polyamine production exemplify the importance of innovation in chemical engineering. His patents and collaborations reflect a commitment to improving industrial processes and environmental sustainability.