Nagatoshi Kobayashi

Title: The Innovations of Nagatoshi Kobayashi

Introduction

Nagatoshi Kobayashi is a notable inventor based in Kamisu, Japan. He has made significant contributions to the field of pigment compositions and printing inks. With a total of 5 patents to his name, Kobayashi's work focuses on reducing harmful substances in pigment formulations.

Latest Patents

Kobayashi's latest patents include a pigment composition and a method for manufacturing it. One of his inventions addresses the issue of polychlorinated biphenyl (PCB) content in disazo pigments. This invention provides a pigment composition that includes a disazo pigment, an alkylamine with a carbon number of 8 or more, and a poly(oxyethylene) alkyl ester. The disazo pigments he focuses on include C.I. Pigment Yellow 83, C.I. Pigment Yellow 13, and C.I. Pigment Yellow 14. Another significant patent involves phthalocyanine pigment compositions that exhibit excellent transparency, gloss, and storage stability when used in liquid ink. This composition contains copper phthalocyanine, a rosin compound, and an aliphatic amine, ensuring a calcium content of 200 ppm or less.

Career Highlights

Kobayashi is currently employed at Dic Corporation, where he continues to innovate in the field of pigment technology. His work has been instrumental in developing safer and more effective pigment compositions for various applications.

Collaborations

Throughout his career, Kobayashi has collaborated with notable colleagues such as Akihiro Ogata and Hidehiro Otake. These collaborations have further enhanced the quality and impact of his inventions.

Conclusion

Nagatoshi Kobayashi's contributions to pigment technology demonstrate his commitment to innovation and safety in the industry. His patents reflect a deep understanding of the complexities involved in pigment composition and manufacturing processes.