Willi Leutenegger

Title: Willi Leutenegger: Innovator in Textile Dyeing Processes

Introduction

Willi Leutenegger is a notable inventor based in Bottmingen, Switzerland. He has made significant contributions to the field of textile dyeing, holding a total of 5 patents. His innovative approaches have improved the efficiency and effectiveness of dyeing processes, particularly for textile fibers.

Latest Patents

Leutenegger's latest patents focus on an improved process for dyeing fiber material. This process involves applying a concentrated aqueous dye liquor to the fiber material at a temperature below the absorption temperature of the dyestuffs. The goods-to-liquor ratio is maintained between 1:1.5 to 1:4. The dye liquor contains at least one dyestuff that has an affinity for the fibers and is either soluble or dispersible in water. Additionally, it includes a surface-active agent, with a recommended concentration of 0.2 to 10 g/l, preferably 2 to 5 g/l. The dyeing process is completed through heat treatment, utilizing saturated steam, superheated steam, or hot air at temperatures ranging from 95°C to 140°C.

Career Highlights

Throughout his career, Willi Leutenegger has worked with prominent companies such as Ciba-Geigy Corporation and Ciba-Geigy AG. His experience in these organizations has allowed him to refine his expertise in textile dyeing technologies and contribute to advancements in the industry.

Collaborations

Some of his notable coworkers include Jacques Zurbuchen and Luigi Calcaterra. Their collaborative efforts have further enhanced the development of innovative dyeing processes.

Conclusion

Willi Leutenegger's contributions to textile dyeing processes have established him as a key figure in the field. His innovative patents reflect a commitment to improving efficiency and effectiveness in dyeing technologies.