Dong Uk Choe

Title: Inventor Dong Uk Choe: Innovating Pearlescent Pigments

Introduction

Dong Uk Choe, a notable inventor based in Daejeon, South Korea, has made significant contributions to the field of pearlescent pigments through his innovative solutions. With a total of two patents to his name, his research focuses primarily on the development and preparation of advanced materials that exhibit various aesthetic qualities.

Latest Patents

Choe’s latest inventions include two important patents. The first patent pertains to “Pearlescent pigments with large aspect ratio and a method of their preparation.” This invention describes a pearlescent pigment created by coating a metal or metal precursor on flaky alpha-alumina crystals. These crystals are characterized by an average particle thickness of 0.5 µm or less and an average particle diameter of 15 µm or higher, boasting a high aspect ratio of 50 or more, which enhances their gloss and visual appeal. The pigments produced exhibit metallic colors such as silver, gold, red, purple, blue, and green.

The second patent is focused on “Flaky alpha-alumina crystals with large aspect ratio and its preparation method.” This patent details the process of preparing flaky alpha-alumina crystals composed of aluminum oxide, zinc oxide, and tin oxide. The method begins with the hydrolysis of a mixed gel from an aqueous aluminum precursor solution and entails aging, drying, and crystallization processes. These crystals possess an average particle thickness of 0.5 µm or less and an average particle diameter of 30 µm or higher, with an impressive aspect ratio of 100 or more. They are recognized for their utility in high-quality pearlescent pigments, abrasives, ceramic materials, and as filling materials.

Career Highlights

Dong Uk Choe has built a fruitful career, contributing his expertise at notable organizations such as the Korea Research Institute of Chemical Technology and Cqv Co., Ltd. His innovative approach and dedication to research have propelled advancements in the materials science sector.

Collaborations

Throughout his career, Choe has collaborated with esteemed colleagues including Jung Min Lee and Jeong Kwon Suh. Their combined efforts have fostered an environment of innovation, resulting in valuable contributions to the industry.

Conclusion

Dong Uk Choe's work in the realm of pearlescent pigments illustrates the impact of innovative thinking in developing materials that meet modern aesthetic and functional demands. With his patents, he remains at the forefront of material science, contributing to both industry advancement and the ongoing evolution of innovative pigments.