Takamasa Ohwaki

Title: Takamasa Ohwaki: Innovator in Resin Technology

Introduction

Takamasa Ohwaki is a notable inventor based in Kyoto, Japan. He has made significant contributions to the field of resin technology, particularly in the development of innovative coating materials. His work has led to advancements that are essential for various industrial applications.

Latest Patents

Ohwaki holds a patent for a resin for coating formation and a method for producing the same. This resin comprises a polyarylate that includes 2,2-bis(3-methyl-4-hydroxyphenyl)propane units and a divalent carboxylic acid component. The composition consists of 10 to 90 mol % of terephthalic acid units and 90 to 10 mol % of isophthalic acid units. The resin has an inherent viscosity of 0.85 or more, measured in 1,1,2,2-tetrachloroethane at a concentration of 1 g/dl at 25°C, and a carboxyl value of 20 mol/ton or less. The production process involves interfacial polymerization, utilizing a quaternary ammonium salt or a quaternary phosphonium salt with at least three alkyl groups, each containing a minimum of three carbon atoms as a catalyst.

Career Highlights

Takamasa Ohwaki is associated with Unitika Ltd., where he has been instrumental in advancing resin technologies. His expertise in polymer chemistry has positioned him as a key figure in the development of high-performance materials.

Collaborations

Ohwaki has collaborated with notable colleagues such as Souichiro Kishimoto and Shinya Takagi. These partnerships have fostered innovation and contributed to the success of various projects within the company.

Conclusion

Takamasa Ohwaki's contributions to resin technology exemplify the impact of innovative thinking in material science. His patent and collaborative efforts continue to influence the industry positively.