Koichi Matsunaga

Title: Innovations of Koichi Matsunaga in Polyvinylacetal Resin

Introduction

Koichi Matsunaga is a notable inventor based in Niigata, Japan. He has made significant contributions to the field of materials science, particularly in the development of polyvinylacetal resin. His innovative work has led to advancements in the properties and production processes of this important material.

Latest Patents

Matsunaga holds a patent for a polyvinylacetal resin and the process for producing it. This invention presents a polyvinylacetal resin powder characterized by low metal content, excellent transparency, moisture resistance, and electrical insulating properties. The resin has a large specific surface area and is produced by reacting polyvinyl alcohol and an aldehyde in the presence of an acid catalyst. The resulting product has an acetalization degree of at least 60 mol %, a specific surface area ranging from 1.50 to 3.50 m/g, a bulk density of 0.12 to 0.19 g/cm³, an average particle diameter of 0.5 to 2.5 µm, and a metal content of at most 80 ppm.

Career Highlights

Koichi Matsunaga is associated with Denki Kagaku Kogyo Kabushiki Kaisha, where he has been instrumental in research and development. His work has not only contributed to the company's portfolio but has also advanced the field of polymer science.

Collaborations

Matsunaga has collaborated with notable coworkers such as Yoshihiro Mashiko and Kazumasa Matsuoto. Their combined efforts have fostered innovation and development within their projects.

Conclusion

Koichi Matsunaga's contributions to the field of polyvinylacetal resin highlight his innovative spirit and dedication to advancing material science. His patent reflects a significant achievement that enhances the properties and applications of this versatile resin.