Wei He

Title: Wei He - Innovator in Chemical Engineering

Introduction

Wei He is a notable inventor based in Shandong, China. He has made significant contributions to the field of chemical engineering, particularly in the preparation of isophorone diisocyanate. His innovative methods have implications for various industrial applications.

Latest Patents

Wei He holds a patent for a method of preparing isophorone diisocyanate. This method involves three key steps: first, reacting isophorone with hydrogen cyanide in the presence of a catalyst to obtain isophorone nitrile; second, reacting the isophorone nitrile with ammonia gas and hydrogen in the presence of a catalyst to produce isophorone diamine; and third, subjecting the isophorone diamine to a phosgenation reaction to yield isophorone diisocyanate. Notably, the method ensures that the content of impurities containing a secondary amine group in the isophorone diamine is ≤0.5 wt. This innovation reduces the content of hydrolyzed chlorine in the final product, enhances its yellowing resistance, and minimizes the harmful effects associated with hydrolyzed chlorine.

Career Highlights

Wei He is associated with Wanhua Chemical Group Co., Ltd., where he applies his expertise in chemical processes. His work has been instrumental in advancing the company's capabilities in producing high-quality chemical products.

Collaborations

Wei He collaborates with talented professionals such as Lei Zhao and Xuelei Cui. Their combined efforts contribute to the innovative environment at Wanhua Chemical Group Co., Ltd.

Conclusion

Wei He's contributions to the field of chemical engineering, particularly through his patent for preparing isophorone diisocyanate, highlight his role as an innovator. His work not only improves product quality but also addresses environmental concerns in chemical manufacturing.