Haiyong Li

Title: Haiyong Li and an Energy-Efficient Route to Electronic-Grade Carbonates.

Introduction

Haiyong Li is an inventor based in Tianjin, China, and is associated with Tianjin University of Science and Technology. His listed patent focuses on an energy-saving method for preparing electronic-grade carbonate products.

Latest Patents

Li is associated with 1 patent: “Energy-saving method for preparing electronic-grade carbonate.” The disclosed process preheats industrial-grade dimethyl carbonate and anhydrous ethanol before a catalyst-assisted esterification reaction. The reaction produces a mixture containing dimethyl carbonate, ethyl methyl carbonate, diethyl carbonate, and a dimethyl carbonate–methanol azeotrope. The method recovers unreacted dimethyl carbonate, separates crude ethyl methyl carbonate and diethyl carbonate, and refines each product to electronic-grade quality. Its staged recovery and separation steps are intended to improve energy efficiency while producing high-purity carbonate compounds.

Career Highlights

Li’s listed work connects him with Tianjin University of Science and Technology and with chemical-process innovation. The patent describes an integrated approach to reaction, recovery, separation, and refining for electronic-grade carbonate production.

Collaborations

Fei Li and Hongxing Wang are identified as Li’s coworkers. The available information does not specify their roles in the patent or the nature of their collaboration.

Conclusion

Haiyong Li’s listed patent presents an energy-conscious process for preparing electronic-grade ethyl methyl carbonate and diethyl carbonate through coordinated reaction and purification steps.