Stefan Frentzen

Title: The Innovative Contributions of Stefan Frentzen

Introduction

Stefan Frentzen is a notable inventor based in Raesfeld, Germany. He has made significant contributions to the field of chemical processes, particularly in the preparation of specialized compounds. With a total of 2 patents to his name, Frentzen's work showcases his expertise and innovative spirit.

Latest Patents

Frentzen's latest patents include a continuous process for the preparation of 4-amino-2,2,6,6-tetramethylpiperidine (TAD). This process involves passing triacetoneamine, ammonia, and hydrogen over a catalyst with at least two layers in a reactor. The catalyst is designed to change independently from the reactor inlet to the outlet, utilizing elements from the 4th, 5th, or 6th row of the 8th transition group of the Periodic Table. Another significant patent is for a solvent-free process for preparing 4-amino-2,2,6,6-tetramethylpiperidine from 2,2,6,6-tetramethylpiperidone (TAA), ammonia, and hydrogen. This method employs a cobalt or nickel catalyst on a support, allowing for the omission of any added solvent, which simplifies the work-up process and enhances space-time yields.

Career Highlights

Stefan Frentzen is currently associated with Huels Aktiengesellschaft, where he continues to innovate and develop new chemical processes. His work has been instrumental in advancing the efficiency and effectiveness of chemical manufacturing.

Collaborations

Frentzen has collaborated with notable colleagues such as Gerhard Thelen and Gerhard Bachstaedter. These partnerships have contributed to the success of his projects and the advancement of their shared goals in the field of chemistry.

Conclusion

Stefan Frentzen's contributions to the field of chemical processes are noteworthy and reflect his dedication to innovation. His patents demonstrate a commitment to improving manufacturing techniques and enhancing product yields.