Company Filing History:
Years Active: 2016-2021
Title: Tetsuya Eguchi: Innovator in Aqueous Pigment Dispersion Technology
Introduction
Tetsuya Eguchi is a prominent inventor based in Wakayama, Japan. He has made significant contributions to the field of pigment dispersion technology, holding a total of 5 patents. His work focuses on developing innovative solutions for water-based inks and pigment dispersions.
Latest Patents
Eguchi's latest patents include advancements in aqueous pigment dispersion. One notable invention relates to a pigment water dispersion that contains pigment-containing water-insoluble crosslinked polymer A particles, a water-soluble basic compound, and water. This invention ensures that the water-insoluble crosslinked polymer A has a carboxy group and a crosslinked structure derived from a water-insoluble crosslinking agent. The saponification value of this polymer ranges from 170 to 300 mgKOH/g, and the water-soluble basic compound includes a water-soluble amine compound. Additionally, he has developed a process for producing this pigment water dispersion, a water-based ink for ink-jet printing that incorporates the dispersion, and an ink-jet printing method utilizing the water-based ink.
Another significant patent involves a water-based pigment dispersion that contains a polymer dispersant and a pigment. The polymer dispersant is created by crosslinking a carboxy group-containing water-insoluble polymer (A) with a water-insoluble polyfunctional epoxy compound. In this invention, the carboxy groups of the water-insoluble polymer (A) are partially neutralized by an alkali metal compound. This water-based pigment dispersion exhibits excellent redispersibility, preventing solidification of the pigment or polymer in ink ejection nozzles, and ensures good storage stability under high-temperature conditions.
Career Highlights
Tetsuya Eguchi is currently employed at Kao Corporation, where he continues to innovate in the field of pigment dispersion technology. His work has been instrumental in enhancing the performance and stability of water-based inks, making significant strides in the industry.
Collaborations
Eguchi has collaborated with notable colleagues, including Hirokazu Hyakuda and Ryuma Mizushima. Their combined expertise has contributed to the advancement of technologies in pigment dispersion and ink formulations.
Conclusion
Tetsuya Eguchi is a key figure in the development of aqueous pigment dispersion technologies.
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