Company Filing History:
Years Active: 2001
Title: Innovations of Tatsuo Ishii in Vinyl Chloride Polymer Production
Introduction
Tatsuo Ishii is a notable inventor based in Ibaraki-ken, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the preparation of vinyl chloride polymers. His innovative approach has led to advancements in productivity and quality in polymer production.
Latest Patents
Tatsuo Ishii holds a patent for the "Preparation of vinyl chloride polymer." This patent describes a method for preparing a vinyl chloride polymer by charging a reactor with a vinyl chloride monomer, effecting polymerization, and subsequently removing a slurry of the polymer from the reactor. The process includes washing the reactor interior with water and repeating the series of steps. The reactor utilized has an internal volume of at least 40 m³. A cylinder-guided lift type washer assembly with a nozzle is secured to the reactor's top in a sealed manner, allowing the nozzle to be moved downward and upward within the reactor. Water is fed to the nozzle through the assembly for effective cleaning. This method enables the large-sized reactor to be washed efficiently in a closed state, resulting in the production of high-quality vinyl chloride polymers with minimal fisheyes, thereby improving overall productivity.
Career Highlights
Tatsuo Ishii is associated with Shin-Etsu Chemical Co., Ltd., where he has applied his expertise in polymer production. His work has been instrumental in enhancing the efficiency and quality of vinyl chloride polymer manufacturing processes.
Collaborations
Tatsuo Ishii has collaborated with notable coworkers such as Shigehiro Hoshida and Genji Noguki. Their combined efforts have contributed to advancements in the field of polymer chemistry.
Conclusion
Tatsuo Ishii's innovative work in the preparation of vinyl chloride polymers has significantly impacted the industry. His patent reflects a commitment to improving production methods and product quality. The advancements made by Ishii and his colleagues continue to influence the field of polymer chemistry.