Naoto Kamata

Title: Naoto Kamata: Innovator in Quinacridone Solid Solution Pigments

Introduction

Naoto Kamata is a prominent inventor based in Chuo-ku, Japan. He has made significant contributions to the field of pigment technology, particularly in the development of quinacridone solid solution pigments. With a total of 6 patents to his name, Kamata's work has advanced the quality and application of pigments in various industries.

Latest Patents

Kamata's latest patents focus on methods for producing quinacridone solid-solution pigments, pigment dispersions, and ink-jet inks. One of his notable inventions is a quinacridone solid solution pigment that enhances the chroma and hue of colored products. This innovation allows for a controlled particle diameter, which is crucial for achieving desired color properties. The method involves a co-cyclization reaction of diarylaminoterepththalic acid and dialkylarylaminoterephthalic acid in polyphosphoric acid, resulting in a water-containing crude quinacridone solid solution. This solution is then dried to obtain a powdery form with less than 1% water content, followed by heating in a non-dissolving liquid medium. Additionally, Kamata has developed techniques for producing pigments that yield high chroma and bluish hues, further enhancing the versatility of quinacridone pigments.

Career Highlights

Kamata is currently employed at Dainichiseika Color & Chemicals Mfg. Co., Ltd., where he continues to innovate in the field of color chemistry. His work has not only contributed to the company's success but has also positioned him as a key figure in pigment research and development.

Collaborations

Throughout his career, Kamata has collaborated with notable colleagues, including Hiromitsu Yanagimoto and Hiroaki Saikatsu. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Naoto Kamata's contributions to the field of quinacridone solid solution pigments exemplify the impact of innovative thinking in the chemical industry. His patents and ongoing work continue to influence the development of high-quality pigments, showcasing the importance of research and collaboration in driving advancements in technology.