This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: Bayer Aktiengesellschaft. Active years: 1991.
Company Filing History:
Years Active: 1991
Title: Rolf B. Hirsch: Innovator in Polymer Spinning Processes
Introduction
Rolf B. Hirsch is a notable inventor based in Dormagen, Germany. He has made significant contributions to the field of synthetic polymer processing, particularly in the dry spinning of polyacrylonitrile (PAN) fibers. With a total of 2 patents, his work has advanced the efficiency and effectiveness of polymer production.
Latest Patents
Hirsch's latest patents include innovative processes that enhance spinning chimney capacities. One patent details a method for dry spinning synthetic polymers, specifically PAN threads containing over 85 wt. % acrylonitrile. This process utilizes superheated steam as the spinning gas and incorporates in-chimney finishing with water or aqueous finishes. Another patent focuses on a dry spinning process using hot air, which allows for high outputs of polyacrylonitrile fibers from solutions in high polar solvents. This method ensures that the filaments exit the spinning cell at temperatures below 110°C, preventing yellowing or self-ignition.
Career Highlights
Rolf B. Hirsch is associated with Bayer Aktiengesellschaft, a leading company in the chemical and pharmaceutical industry. His work at Bayer has allowed him to explore and develop advanced spinning techniques that have practical applications in various industries.
Collaborations
Hirsch has collaborated with notable colleagues, including Ulrich Reinehr and Gunter Turck. These partnerships have contributed to the successful development of his patented processes and innovations.
Conclusion
Rolf B. Hirsch's contributions to the field of polymer spinning are significant and impactful. His innovative processes continue to shape the industry and enhance the production of synthetic fibers.