Tadaharu Hase

Title: The Innovative Contributions of Tadaharu Hase

Introduction

Tadaharu Hase is a notable inventor based in Osaka-fu, Japan. He is recognized for his significant contributions to the field of chemical engineering, particularly in the production of refined methacrylic acid. His innovative processes have paved the way for advancements in the chemical industry.

Latest Patents

Hase holds a patent for a process for refining methacrylic acid. This process involves oxidizing methacrolein catalytically in a vapor phase to create a methacrylic acid-containing gas. The gas is then cooled and condensed into an aqueous methacrylic acid solution. An organic solvent is added to this solution to facilitate an extraction operation, resulting in a refined extract. The extract is subsequently mixed with water, separated into organic and water phases, and the organic phase is distilled. This method allows for the economical production of highly refined methacrylic acid with minimal waste and low levels of dibasic acids such as maleic acid and citraconic acid.

Career Highlights

Throughout his career, Hase has worked with prominent companies in the chemical sector, including Mitsui Chemicals, Inc. and Kuraray Co., Ltd. His expertise and innovative approaches have made a significant impact on the processes used in these organizations.

Collaborations

Hase has collaborated with esteemed colleagues such as Kazuo Wakimura and Yoshihiro Sezaki. These partnerships have contributed to the development of advanced chemical processes and innovations in the industry.

Conclusion

Tadaharu Hase's contributions to the field of chemical engineering, particularly through his patent for refining methacrylic acid, highlight his role as an influential inventor. His work continues to inspire advancements in the chemical industry.