Kesaji Harada

Title: The Innovative Contributions of Kesaji Harada

Introduction

Kesaji Harada is a notable inventor based in Chiyoda-ku, Japan. He has made significant contributions to the field of chemical engineering, particularly in the synthesis of silanes. His work has led to advancements that benefit various industrial applications.

Latest Patents

Harada holds a patent for a method for preparing monosilanes from a high-boiling fraction formed during the direct synthesis of methylchlorosilanes. This process involves reacting metallic silicon with methyl chloride in the presence of a copper catalyst, which produces a high-boiling fraction of methylchlorodisilanes as by-products. The invention provides a method for converting this high-boiling fraction into monosilanes by reacting it with hydrogen chloride in the presence of an amine or amide catalyst. The reaction is optimized to ensure that the amounts of iron, aluminum, zinc, tin, and their compounds present in the reaction system are less than the equimolar amount with respect to the catalyst. This innovation significantly increases the conversion of disilanes into monosilanes.

Career Highlights

Kesaji Harada is associated with Shin-Etsu Chemical Co., Ltd., where he has been able to apply his expertise in chemical synthesis. His work has been instrumental in enhancing the efficiency of silane production processes.

Collaborations

Harada has collaborated with notable colleagues, including Akihito Tsukuno and Yukinori Satoh. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Kesaji Harada's contributions to the field of chemical engineering, particularly through his patented methods for synthesizing monosilanes, highlight his role as an influential inventor. His work continues to impact the industry positively.