Lidong Sun

Title: Innovations of Lidong Sun in Isocyanate Polymerization

Introduction

Lidong Sun is a prominent inventor based in Shandong, China, known for his significant contributions to the field of polymer chemistry. He has been instrumental in developing innovative catalysts and processes for isocyanate polymerization, which have applications in various industries.

Latest Patents

Lidong Sun holds two notable patents. The first patent is for an isocyanate polymerization catalyst and its preparation method. This catalyst is a carboxylic acid salt containing a di-quaternary ammonium ion, featuring a structure with hydroxyl-containing aromatic heterocyclic residues. It demonstrates high activity, requiring only a small quantity for the polymerization of isocyanates. The resulting polyisocyanates exhibit color values lower than 25 Hazen, monomer contents of less than 0.5% by weight, high isocyanurate contents, and low viscosities. The second patent pertains to a process for preparing isocyanate homopolymers containing uretdione groups. This process utilizes a phosphinoboron compound as a catalyst to facilitate the homopolymerization reaction of raw isocyanates, yielding a solution of isocyanate homopolymers with improved characteristics.

Career Highlights

Lidong Sun is currently associated with Wanhua Chemical Group Co., Ltd., where he continues to advance research in polymer chemistry. His work has led to significant advancements in the efficiency and effectiveness of isocyanate polymerization processes.

Collaborations

Throughout his career, Lidong Sun has collaborated with notable colleagues, including Wei Liu and Yonghua Shang, contributing to the collective knowledge and innovation in the field of polymer chemistry.

Conclusion

Lidong Sun's innovative work in isocyanate polymerization has made a substantial impact on the industry, showcasing his expertise and dedication to advancing polymer chemistry. His patents reflect a commitment to developing efficient and effective solutions in this field.