Junji Mikami

Title: Junji Mikami: Innovator in Aqueous Solution Purification

Introduction

Junji Mikami, an accomplished inventor based in Takaishi, Japan, has made significant strides in the field of chemical engineering. With two patents to his name, Mikami has focused on enhancing the purification processes for aqueous solutions, particularly involving acrylamide.

Latest Patents

Mikami's latest inventions center around the purification of aqueous solutions of acrylamide. His first patent outlines a process for purifying an aqueous solution of acrylamide obtained through catalytic hydration of acrylonitrile using a copper-based catalyst. This innovative method includes a series of steps: (a) removal of unreacted acrylonitrile, (b) removal of copper, (c) treatment under basic conditions, (d) cation exchanging treatment, and (e) weakly basic anion exchanging treatment. The resulting acrylamide boasts excellent storage stability, and the acrylamide polymer produced is ideal as a flocculant due to its high molecular weight and enhanced water solubility.

The second patent focuses on an improved purification method for crude aqueous solutions of acrylamide. This technique involves exposing the solution to oxygen or an oxygen-containing gas before initiating a dual treatment with a strongly acidic cation exchange resin followed by a weakly basic anion exchange resin. Maintaining the oxygen content at least at 4ppm during treatment optimizes the purification process.

Career Highlights

Junji Mikami is currently affiliated with Mitsui Toatsu Chemicals, Incorporated, where he applies his expertise in chemical processes to develop innovative solutions. His contributions significantly impact the field of acrylamide applications in various industrial sectors.

Collaborations

Mikami collaborates with talented professionals such as Shiro Asano and Kohei Shizuka, sharing insights and expertise that enhance their research and development efforts. These collaborations foster an environment of innovation that drives further advancements in chemical engineering.

Conclusion

As an inventor, Junji Mikami's work in aqueous solution purification showcases his commitment to improving processes within the chemical industry. His contributions through patents demonstrate his significant role in enhancing the efficiency and safety of acrylamide production, paving the way for its broader applications.