Toshiaki Takata

Title: Toshiaki Takata: Innovator in Polycarbonate Resin Production

Introduction

Toshiaki Takata is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the production of polycarbonate resins. With a total of 9 patents to his name, Takata's work has had a lasting impact on the industry.

Latest Patents

One of Takata's latest patents is a process for producing polycarbonate resin with high flowability. This innovative method involves an interfacial polymerization technique that includes several steps. Initially, a reaction mixture is formed by injecting phosgene into bisphenol. After the phosgene injection is complete, a tetraammonium salt is added to the mixture. The polycondensation reaction is then conducted until the viscosity average molecular weight (Mv) of the reaction mixture reaches between 3,000 and 6,000. Following this, a molecular weight modifier is added, and further polycondensation is performed to obtain the desired polycarbonate resin. Another notable patent involves a polycarbonate resin with high flowability, which contains less than 1% by weight of low molecular weight carbonate compounds and at least 10% by weight of a polycarbonate oligomer.

Career Highlights

Throughout his career, Toshiaki Takata has worked with several reputable companies, including Mitsubishi Gas Chemical Company, Inc. and Shin-Etsu Chemical Co., Ltd. His expertise in polymer chemistry has allowed him to develop innovative processes that enhance the properties of polycarbonate resins.

Collaborations

Takata has collaborated with notable colleagues such as Noriyoshi Ogawa and Tadami Kinugawa. These partnerships have contributed to the advancement of research and development in the field of polymer science.

Conclusion

Toshiaki Takata's contributions to the production of polycarbonate resins demonstrate his innovative spirit and dedication to advancing polymer chemistry. His patents reflect a commitment to improving material properties and processes, making him a significant figure in the industry.