Holger Conzelmann

Title: Holger Conzelmann: Innovator in Polyisocyanate Preparation

Introduction

Holger Conzelmann is a notable inventor based in Lichtenwald, Germany. He has made significant contributions to the field of chemical engineering, particularly in the preparation of polyisocyanates. His innovative approach has led to advancements in the production processes used in various industries.

Latest Patents

Holger Conzelmann holds a patent for a process for preparing polyisocyanates. The patent describes a continuous process where a polyamine and phosgene are predominantly converted into carbamoyl chloride and amine hydrochloride, with only minor proportions converted to polyisocyanate. A portion of the resulting reaction mixture is recycled into the reaction with phosgene, ensuring efficiency and sustainability in the production process.

Career Highlights

Conzelmann is associated with Covestro Deutschland AG, a leading company in the field of polymer materials. His work has been instrumental in enhancing the efficiency of chemical processes, contributing to the company's reputation for innovation and quality.

Collaborations

Throughout his career, Holger has collaborated with esteemed colleagues such as Jürgen Arras and Manfred Keller-Killewald. These partnerships have fostered a collaborative environment that encourages the exchange of ideas and expertise.

Conclusion

Holger Conzelmann's contributions to the field of polyisocyanate preparation exemplify the impact of innovative thinking in chemical engineering. His patent and work at Covestro Deutschland AG highlight the importance of continuous improvement in industrial processes.