Shigeyuki Kozawa

Title: Shigeyuki Kozawa: Innovator in Polymer Chemistry

Introduction

Shigeyuki Kozawa is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of polymer chemistry, holding a total of 11 patents. His work primarily focuses on the development of innovative materials and compositions that have practical applications in various industries.

Latest Patents

Among his latest patents is a vinyl chloride resin composition. This aqueous composition comprises a carboxylate group-containing blocked polyurethane and water as essential components. The polyurethane is a reaction product of a carboxylic acid (or carboxylate) group-containing polyoxyalkylene polyol, which contains at least 50% by weight of oxyethylene groups. It has an average number of hydroxyl groups greater than 2 and features from 0.005 to 0.8 --COOX group (where X can be a hydrogen atom or a cation) per molecule at the backbone chain terminals. Additionally, it includes a polyisocyanate with isocyanate groups in a stoichiometrically excess amount compared to the hydroxyl groups of the polyol, along with a blocking agent corresponding to this excess amount.

Career Highlights

Shigeyuki Kozawa has worked with notable companies such as Asahi Glass Company, Limited and Asahi Fiber Glass Company, Limited. His experience in these organizations has allowed him to refine his expertise in polymer materials and their applications.

Collaborations

Throughout his career, Kozawa has collaborated with esteemed colleagues, including Takao Doi and Nobuaki Kunii. These partnerships have contributed to the advancement of his research and the successful development of his patented technologies.

Conclusion

Shigeyuki Kozawa is a distinguished inventor whose work in polymer chemistry has led to numerous innovations. His contributions continue to impact various industries, showcasing the importance of research and development in creating advanced materials.