Yunlong Xu

Title: Innovations of Yunlong Xu in Polymer Synthesis

Introduction

Yunlong Xu is a notable inventor based in Nanjing, China. He has made significant contributions to the field of polymer synthesis, particularly through his innovative methods for creating poly(butylene adipate-co-terephthalate) (PBAT). His work is characterized by a unique approach that combines melt and solid-state polycondensation techniques.

Latest Patents

Yunlong Xu holds a patent for a method of synthesizing poly(butylene adipate-co-terephthalate). This method utilizes an organic guanidine as the main catalyst within a ternary catalyst system, which includes a first cocatalyst of titanate ester or zirconate ester and a second cocatalyst of metallic oxide. The process involves adding 1,4-butanediol, adipic acid, terephthalic acid, and the ternary catalyst system to a reaction still. An oligo-polycondensation is conducted to yield an oligomer with a weight average molecular weight between 3.0×10 and 4.0×10. This is followed by a melt polycondensation to produce a prepolymer with a medium molecular weight between 1.5×10 and 3.0×10. Finally, the solid prepolymer is crushed into granules and subjected to solid-state polycondensation to yield the final PBAT product. He has 1 patent in this area.

Career Highlights

Yunlong Xu is affiliated with Nanjing University, where he continues to advance research in polymer science. His innovative methods have the potential to impact various applications in materials science and engineering.

Collaborations

Yunlong Xu has collaborated with notable colleagues, including Hong Li and Quanxing Zhang. Their combined expertise contributes to the advancement of research in polymer synthesis.

Conclusion

Yunlong Xu's contributions to the field of polymer synthesis through his innovative methods highlight the importance of research and development in creating advanced materials. His work not only showcases his expertise but also paves the way for future innovations in the industry.