Shumei Ji

Title: Shumei Ji: Innovator in Pigment Composition

Introduction

Shumei Ji is a notable inventor based in Qingdao, China. He has made significant contributions to the field of pigment composition, particularly in reducing harmful substances in pigments. His work is essential for improving the safety and quality of printing inks.

Latest Patents

Shumei Ji holds 1 patent for his invention titled "Pigment composition, printing ink, and method for manufacturing pigment composition." This invention addresses the issue of reducing polychlorinated biphenyl (PCB) content alongside primary aromatic amine (PAA) content in disazo pigments. The pigment composition includes a disazo pigment, an alkylamine with an alkyl group of carbon number 8 or more, and a poly(oxyethylene) alkyl ester with a similar alkyl group. The disazo pigments mentioned in his patent include C.I. Pigment Yellow 83, C.I. Pigment Yellow 13, and C.I. Pigment Yellow 14.

Career Highlights

Shumei Ji is currently associated with Dic Corporation, where he continues to innovate in the field of pigment technology. His work has implications for various industries, including printing and manufacturing, where the quality of pigments is crucial.

Collaborations

Shumei Ji has collaborated with notable colleagues such as Nagatoshi Kobayashi and Xiyang Liao. These collaborations have likely contributed to the advancement of his research and innovations in pigment compositions.

Conclusion

Shumei Ji's contributions to pigment composition highlight his role as an important inventor in the field. His innovative approach to reducing harmful substances in pigments is paving the way for safer and more effective printing inks.