This inventor holds 3 USPTO granted patents. Top assignees: Davy Mckee Aktiengesellschaft, Borsigalle, Davy Mckee Corporation, Zimmer Aktiengesellschaft. Active years: 1981-1985.
Company Filing History:
1 out of 1 
1 out of 12 
1 out of 100 Years Active: 1981-1985
Title: Innovations of Hans-Jochen Rothe
Introduction
Hans-Jochen Rothe is a notable inventor based in Maintal, Germany. He has made significant contributions to the field of polyamide production, holding a total of 3 patents. His work focuses on methods for producing spinnable polyamides from dinitriles, which are essential in various industrial applications.
Latest Patents
Rothe's latest patents include a method for producing spinnable polyamide from dinitrile with phosphorus. This innovative process allows for the production of spinnable polyhexamethylene adipamide of high molecular weight from adiponitrile, hexamethylene diamine, water, and additives. The production is preferably continuous in a reaction cascade and in a finisher as the final stage, utilizing catalysts to accelerate the process. The polyamides can be produced from dinitriles, diamines, and excess water in the presence of specific catalysts, including alkyl, aryl, and alkyl/aryl esters of phosphoric, phosphorous, phosphonic, and phosphinic acids.
Career Highlights
Throughout his career, Hans-Jochen Rothe has worked with prominent companies such as Davy McKee Corporation and Davy McKee Aktiengesellschaft. His expertise in polyamide production has made him a valuable asset in the industry.
Collaborations
Rothe has collaborated with notable coworkers, including Georg Skupin and Hansdieter Hofmann. Their combined efforts have contributed to advancements in the field of polyamide production.
Conclusion
Hans-Jochen Rothe's innovative work in the production of polyamides has led to significant advancements in the industry. His patents and collaborations reflect his dedication to improving manufacturing processes and materials.