This inventor holds 1 USPTO granted patent. Top assignee: Ciba-Geigy Corporation. Active years: 1991.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1991
Title: Innovations of Junkuan Wang in Carboxylated Aromatic Hydroxy Compounds
Introduction
Junkuan Wang is a notable inventor based in Zurich, Switzerland. He has made significant contributions to the field of chemistry, particularly in the preparation of carboxylated aromatic hydroxy compounds. His innovative processes have implications for various industries, including pharmaceuticals and plastics.
Latest Patents
Junkuan Wang holds a patent for a process that involves the preparation of compounds of the formula HO-Ar-COOH, where Ar represents a substituted or unsubstituted aromatic ring system. This process entails oxidizing compounds of the formula HO-Ar-R1, where R1 is an alkyl group with 1 to 5 carbon atoms. The oxidation is performed using oxygen or oxygen-donating compounds in an organic solvent at temperatures ranging from 80°C to 130°C. The presence of an acylating agent, cobalt and/or manganese compounds, and bromide-donating compounds facilitates the selective oxidation of hydroxyl-substituted aromatic compounds to yield carboxylated hydroxy compounds. This method results in high purity and yield without the need for pressure, making it a valuable process for producing intermediates used in dyes, plastics, and pharmaceuticals.
Career Highlights
Junkuan Wang is associated with Ciba-Geigy Corporation, where he has been instrumental in advancing chemical processes. His work has not only contributed to the company's portfolio but has also enhanced the understanding of aromatic compound chemistry.
Collaborations
Junkuan Wang has collaborated with notable colleagues, including Martin Clausen and Paul Rys. These partnerships have fostered innovation and have led to advancements in their respective fields.
Conclusion
Junkuan Wang's contributions to the preparation of carboxylated aromatic hydroxy compounds exemplify the impact of innovative processes in chemistry. His work continues to influence various industries, showcasing the importance of research and development in creating valuable chemical intermediates.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile