Yoshitsugu Sakaki

Title: Yoshitsugu Sakaki: Innovator in Polyurethane Foam Technology

Introduction

Yoshitsugu Sakaki is a notable inventor based in Aichi, Japan. He has made significant contributions to the field of polyurethane foam technology, holding a total of 4 patents. His innovative work has led to advancements in the preparation and properties of flexible polyurethane foams.

Latest Patents

Sakaki's latest patents focus on the preparation of flexible polyurethane foams. In one of his patents, propylene oxide is added to an active hydrogen compound in the presence of an alkali metal hydroxide catalyst. This process occurs at a reaction temperature ranging from 60 to 98 degrees Celsius and a reaction pressure of less than or equal to 4 kg/cm². The resulting polyoxyalkylene polyol has a hydroxyl value of 10 to 35 mg KOH/g, a monool content of less than or equal to 15 mol %, and a Head-to-Tail bond selectivity of greater than or equal to 96 percent. The flexible polyurethane foams produced exhibit excellent properties such as hardness, humid aged compression set, and impact resiliency.

Career Highlights

Throughout his career, Sakaki has worked with prominent companies, including Mitsui Toatsu Chemicals, Incorporated and Mitsui Chemicals, Inc. His experience in these organizations has allowed him to refine his expertise in polymer chemistry and foam technology.

Collaborations

Sakaki has collaborated with notable colleagues such as Kazuhiko Ohkubo and Tomoki Tsutsui. These partnerships have contributed to the advancement of his research and the successful development of innovative products in the polyurethane industry.

Conclusion

Yoshitsugu Sakaki's contributions to the field of polyurethane foam technology are significant and impactful. His innovative patents and collaborations have paved the way for advancements in the properties and applications of flexible polyurethane foams.