Akio Shindo

Title: **Akio Shindo: Innovator in Bisphenol A Production**

Introduction

Akio Shindo is a prominent inventor based in Yokohama, Japan. He has significantly contributed to the chemical industry through his innovative approaches to the production of bisphenol A, an essential compound used in numerous applications, including plastics and resins. With a total of five patents to his name, Shindo's work highlights his commitment to advancing chemical processes and product quality.

Latest Patents

Shindo is credited with several groundbreaking patents focused on the production of bisphenol A. His latest patents include:

1. **Process for the production of bisphenol A**: In this process, a high-quality bisphenol A with excellent purity and hue is produced from a crystalline adduct of bisphenol A and phenol. The method involves washing the adduct with specifically purified phenol, followed by a decomposition step to separate bisphenol A. The purification includes contacting raw material phenol with a strong-acid ion exchange resin to obtain treated phenol and distilling the treated product.

2. **Process for the production of bisphenol A**: Another innovative method developed by Shindo produces high-quality bisphenol A from a neutral crystalline adduct of bisphenol A and phenol. This process includes fusing the adduct in an atmosphere with a maximum oxygen content of 0.005% by volume and evaporating the liberated phenol. To enhance product quality, an aliphatic carboxylic acid can be mixed with the adduct before the fusion, helping to reduce the coloration. The apparatus used for this process is also designed to facilitate a two-stage steam stripping for effective evaporation of phenol.

Career Highlights

Akio Shindo is currently affiliated with Chiyoda Corporation, a company renowned for its innovative solutions in chemical engineering and technology. Throughout his career, Shindo has demonstrated remarkable expertise in chemical processes, resulting in his impactful contributions to the production of bisphenol A. His advancements not only improve the efficiency of the production process but also enhance the final product's quality, solidifying his status as an influential inventor.

Collaborations

Shindo has collaborated with notable colleagues Sachio Asaoka and Tetsuo Maejima, working together to push the boundaries of chemical production techniques. Their teamwork has fostered an environment of innovation, leading to several successful patents and advancements in the field.

Conclusion

Akio Shindo's work in the field of bisphenol A production showcases his significant contributions to chemical engineering. With his innovative processes and collaboration with industry experts, Shindo continues to advance the standards of quality and efficiency in chemical manufacturing, making him a respected figure in the world of inventions and patentable technologies.