Location History:
- Yokohama, JA (1976)
- Joetsu, JP (1978)
- Joetsu, JA (1978)
- Naoetsu, JP (1979)
- Ibaragi, JP (1979 - 1980)
- Kanagawa, JP (1985)
- Yokohama, JP (1988)
Company Filing History:
Years Active: 1976-1988
Title: Shunichi Koyanagi: Innovator in Vinyl Polymer Production
Introduction
Shunichi Koyanagi is a prominent inventor based in Ibaraki, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the production of vinyl polymers. With a total of 10 patents to his name, Koyanagi's work has had a substantial impact on the industry.
Latest Patents
Koyanagi's latest patents include innovative processes for the production of vinyl polymers. One notable patent is a process for the production of a vinyl polymer by suspension polymerization or emulsion polymerization of at least one kind of vinyl monomer in an aqueous medium. This process effectively prevents scaling on the inner wall surface of a polymerizer during polymerization. Another significant patent focuses on the production of a vinyl chloride polymer, which also utilizes a similar approach to prevent scaling while controlling chloride ion concentration in the reaction mixture.
Career Highlights
Koyanagi is currently associated with Shin-Etsu Chemical Co., Ltd., where he continues to advance his research and development efforts. His expertise in polymerization processes has positioned him as a key figure in the field.
Collaborations
Throughout his career, Koyanagi has collaborated with notable colleagues, including Toshihide Shimizu and Ichiro Kaneko. These collaborations have further enriched his research and contributed to the success of his innovative projects.
Conclusion
Shunichi Koyanagi's contributions to the field of vinyl polymer production exemplify his dedication to innovation and excellence. His patents reflect a commitment to improving industrial processes and advancing polymer chemistry.