Gunther Hammen

Title: Gunther Hammen: Innovator in Polyurethane Chemistry

Introduction

Gunther Hammen is a notable inventor based in Dormagen, Germany. He has made significant contributions to the field of polyurethane chemistry, holding a total of 2 patents. His work focuses on innovative processes that enhance the preparation of various chemical compounds.

Latest Patents

Hammen's latest patents include a process for the preparation of N- and O-substituted diurethanes. This process involves reacting a diamine and/or polyamine containing a primary amino group with an N-aryl-0-alkyl urethane in the presence of at least one high boiling alcohol. The reaction is conducted at temperatures ranging from 180°C to 350°C and pressures of approximately 0.1 to 1,500 mbar. Notably, the arylamine that forms during this reaction is continuously removed from the mixture. Additionally, he has developed a process for the preparation of polyisocyanates, which are produced by thermally splitting a carbamate.

Career Highlights

Gunther Hammen is associated with Bayer Aktiengesellschaft, a leading company in the chemical and pharmaceutical industry. His work at Bayer has allowed him to explore and innovate within the realm of polyurethane applications.

Collaborations

Hammen has collaborated with esteemed colleagues such as Rudolf Sundermann and Klaus Konig. These partnerships have contributed to the advancement of his research and the successful development of his patented processes.

Conclusion

Gunther Hammen's contributions to polyurethane chemistry through his innovative patents highlight his role as a significant inventor in the field. His work continues to influence the industry and pave the way for future advancements.