Roland Steiger

Title: Roland Steiger: Innovator in Ethylene/Vinyl Acetate Copolymers

Introduction

Roland Steiger is a notable inventor based in Dormagen, Germany. He has made significant contributions to the field of polymer chemistry, particularly in the production of gel-free ethylene/vinyl acetate copolymers. His innovative approach has led to advancements that enhance the mechanical properties of vulcanizates.

Latest Patents

Steiger holds a patent for a process that produces gel-free ethylene/vinyl acetate copolymers with a high content of copolymerized vinyl acetate and a high Mooney viscosity. The patent describes a method of polymerization in solution using 20 to 45% by weight tert-butanol, at temperatures ranging from 50 to 80 degrees Celsius and under pressures of 300 to 450 bar. This process utilizes azo compounds in a cascade of stirred reactors, achieving an average residence time of 5 to 9 hours and a conversion rate of 50 to 70% by weight based on the vinyl acetate used. The resulting copolymers are particularly useful for producing vulcanizates with improved mechanical properties.

Career Highlights

Steiger is associated with Bayer Aktiengesellschaft, a leading global company in the chemical and pharmaceutical sectors. His work at Bayer has allowed him to focus on innovative polymer solutions that meet industry demands.

Collaborations

Throughout his career, Steiger has collaborated with esteemed colleagues such as Erhard Asch and Werner Obrecht. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Roland Steiger's contributions to the field of polymer chemistry, particularly through his patented process for producing gel-free ethylene/vinyl acetate copolymers, highlight his role as a significant inventor. His work continues to influence the development of materials with enhanced properties.