Yi-Xian Wu

Title: Yi-Xian Wu and a High-Gravity Method for Synthesizing Butyl Rubber.

Introduction

Yi-Xian Wu is an inventor based in Beijing, China, associated with Beijing University of Chemical Technology. His patent work focuses on improving the efficiency of butyl rubber production through high-gravity polymerization.

Latest Patents

Wu is associated with 1 patent, titled “Method for Synthesis of Butyl Rubber.” The invention uses high-gravity devices as polymerization reactors. A mixture of isomonoolefin and conjugated diolefin monomers with a diluent, along with an initiator-and-diluent mixture, is fed into the reactor at a controlled ratio to carry out cationic polymerization. The monomers and diluent are then removed to obtain butyl rubber polymers with a number-average molecular weight of 80,000–300,000 and a molecular-weight distribution index of 1.9–3.6.

The patent describes how the high-gravity environment intensifies micromixing, mass transfer, and heat transfer. Compared with conventional stirred polymerization, the method is designed to use a smaller reactor, reduce material residence time by at least 30-fold, lower costs and energy consumption, and increase production efficiency.

Career Highlights

Wu’s listed patent connects his work with polymer synthesis and process engineering at Beijing University of Chemical Technology. The invention applies high-gravity technology to address practical challenges in industrial polymerization.

Collaborations

The supplied information identifies Lei Zhang and Hai-Kui Zou as Wu’s coworkers.

Conclusion

Yi-Xian Wu’s patent presents a high-gravity approach to butyl rubber synthesis intended to improve mixing and heat and mass transfer while reducing reactor size, processing time, and energy use.