Masatoshi Harada

Title: Masatoshi Harada: Innovator in Chlorinated Vinyl Chloride Resin

Introduction

Masatoshi Harada is a notable inventor based in Yamaguchi, Japan. He has made significant contributions to the field of materials science, particularly in the development of chlorinated vinyl chloride resins. With a total of 2 patents to his name, Harada's work has had a considerable impact on the industry.

Latest Patents

Harada's latest patents focus on the advancements in chlorinated vinyl chloride resin. One of his inventions provides a chlorinated polyvinyl chloride that enables excellent continuous productivity in molding. This innovation allows molded articles to possess both processability and unevenness-preventing properties. The patent specifies that the chlorinated polyvinyl chloride must have an endothermic peak start temperature (L) and an endothermic peak end temperature (H) that satisfy the expression: 41° C.≤H−L≤98° C. in endothermic peak measurement using a differential scanning calorimeter (DSC). Another patent outlines a method for producing chlorinated vinyl chloride resin through a heat chlorination reaction of an aqueous suspension of vinyl chloride resin in a hermetically sealable reaction vessel. This method includes a first heat chlorination reaction while raising the temperature of the aqueous suspension of vinyl chloride resin powder to a predetermined temperature within the range of 85° C. to 95° C., followed by a second heat chlorination reaction at the same predetermined temperature.

Career Highlights

Throughout his career, Masatoshi Harada has worked with prominent companies such as Sekisui Chemical Co., Ltd. and Tokuyama Sekisui Co., Ltd. His experience in these organizations has allowed him to refine his expertise in polymer chemistry and materials engineering.

Collaborations

Harada has collaborated with several notable individuals in his field, including Norikazu Mashino and Masazumi Okudo. These collaborations have contributed to the advancement of his research and innovations.

Conclusion

Masatoshi Harada's contributions to the development of chlorinated vinyl chloride resins highlight his role as an influential inventor in the materials science sector. His patents reflect a commitment to enhancing productivity and quality in manufacturing processes.