Johann Friedhuber

Title: **Innovations by Johann Friedhuber: A Pioneer in Chemical Processes**

Introduction

Johann Friedhuber, an esteemed inventor hailing from Linz, Austria, has made significant contributions to the field of chemical processes with a focus on transesterification and acid preparation. With two patents to his name, his innovative approaches have the potential to influence various industries, especially in the production of carboxylic acids.

Latest Patents

Friedhuber's latest patents showcase his expertise in refining chemical processes. The first patent entails a "Process for transesterifying α-Ketocarboxylic esters," which involves using an anhydrous alcohol as the reaction medium. This process incorporates various catalysts, including tin, titanium, zirconium, or lithium catalysts, along with acetylacetonates, enhancing the efficiency of ester conversion.

The second patent focuses on "Process for the preparation of mono- or dicarboxylic acids from aliphatic or aromatic substrates." This innovation details the oxidation of corresponding aldehydes of 4 to 22 carbon atoms in a carboxylic acid or a carboxylic acid/water mixture. Conducted at temperatures between 50°C and 130°C and pressures ranging from 1 to 25 bar, this process utilizes an oxidizing agent to produce valuable carboxylic acids crucial for numerous applications.

Career Highlights

Friedhuber's career includes significant roles at prominent companies in the chemical sector. He has worked at DSm Chemie Linz GmbH and DSm Fine Chemicals Austria GmbH, where he applied his extensive knowledge to enhance chemical production processes. His practical experience in these industries has contributed to his inventive accomplishments.

Collaborations

Throughout his career, Johann has collaborated with notable coworkers including Carlo Kos and Manfred Schoftner. Their joint efforts in research and development have further propelled innovation in chemical processes, benefitting from shared insights and expertise in the field.

Conclusion

Johann Friedhuber's work in the field of chemical engineering exemplifies the spirit of innovation. With his two patents that focus on essential processes in chemistry, he stands out as an inventor dedicated to advancing methods that have widespread industrial applications. His contributions not only reflect his individual ingenuity but also the fruitful collaborations that inspire further breakthroughs in chemical technologies.