Ralf Dohrn

Title: Ralf Dohrn: Innovator in Polymer Chemistry

Introduction

Ralf Dohrn is a notable inventor based in Bergisch Gladbach, Germany. He has made significant contributions to the field of polymer chemistry, holding a total of 2 patents. His work focuses on improving processes related to polymer polyols and chemical reactors.

Latest Patents

Ralf Dohrn's latest patents include a process for stripping polymer polyols and a chemical reactor with a magnetic stirring device. The first patent provides a purification process for polymer polyols that effectively reduces acrylonitrile, styrene, and residual amounts of chain regulators and recombination products. This process ensures that the levels of acrylonitrile are below 25 ppm, styrene below 50 ppm, chain regulators below 50 ppm, and recombination products below 280 ppm through the use of packed columns. The second patent describes a chemical reactor designed with a cylindrical vessel and a magnetic stirring device. This innovative stirring device consists of magnetic coils arranged in a star formation around the vessel, creating a magnetic field that interacts with a rotor equipped with stirring blades and permanent magnets.

Career Highlights

Throughout his career, Ralf Dohrn has worked with prominent companies such as Bayer Aktiengesellschaft and Bayer MaterialScience AG. His experience in these organizations has allowed him to develop and refine his innovative ideas in polymer chemistry.

Collaborations

Ralf has collaborated with notable coworkers, including Christoph Braden and Michael Brockelt. Their combined expertise has contributed to advancements in their respective fields.

Conclusion

Ralf Dohrn's contributions to polymer chemistry through his patents and collaborations highlight his role as an influential inventor. His innovative processes and designs continue to impact the industry positively.