Jae-Kyoung Roh

Title: Innovations of Jae-Kyoung Roh in Polyester Resin and Toner Technology

Introduction

Jae-Kyoung Roh is a notable inventor based in Gyeonggi-do, South Korea. He has made significant contributions to the field of materials science, particularly in the development of polyester resins and toners. With a total of 2 patents to his name, his work has implications for various applications in electrophotographic image forming processes.

Latest Patents

Roh's latest patents focus on innovative formulations of polyester resin and toner. One patent describes a toner designed for electrophotographic image forming processes, which includes a polyester resin comprising specific acid and alcohol components. The acid components consist of 70 to 96 mol % of aromatic dibasic acid, 3 to 20 mol % of cycloaliphatic dibasic acid, and 1 to 10 mol % of trivalent or higher acid components. The alcohol components include 10 to 50 mol % of cycloaliphatic diol, 2 to 20 mol % of trihydric or higher alcohol, and 30 to 88 mol % of aliphatic diol, along with a heat stabilizer.

Another patent details a polyester resin that incorporates aromatic dibasic acid and trivalent or higher acid components, along with various diol components. This formulation also includes polyolefin polyol and wax, which are critical for enhancing the properties of the resin. The method for preparing this polyester resin involves an esterification or ester exchange reaction followed by a polycondensation reaction in the presence of wax.

Career Highlights

Jae-Kyoung Roh is currently employed at Sk Chemicals Co., Ltd., where he continues to innovate in the field of polymer chemistry. His work has been instrumental in advancing the technology behind toners and resins, making significant contributions to the industry.

Collaborations

Throughout his career, Roh has collaborated with esteemed colleagues such as Young-Man Yoo and Kye-Yune Lee. These partnerships have fostered a collaborative environment that enhances the research and development of new materials.

Conclusion

Jae-Kyoung Roh's contributions to polyester resin and toner technology highlight his role as an influential inventor in the field. His innovative patents and collaborations continue to shape advancements in materials science.