Siegmund Haller

Title: Siegmund Haller: Innovator in Chrome Tanning Processes

Introduction

Siegmund Haller is a notable inventor based in Kelkheim, Germany. He has made significant contributions to the field of leather tanning, particularly through his innovative processes that enhance the quality and efficiency of leather production. His work has led to advancements that are still relevant in the industry today.

Latest Patents

Haller holds a patent for an "Economy chrome tanning process with aldehyde-acids and keto-acids." This process involves pretreating pelts with 0.1 to 2% of an aldehyde- or keto-acid, such as glyoxylic acid or pyruvic acid, before tanning them using conventional methods. The pretreatment, preferably conducted in the pickle, allows for a reduced chromium supply of only 1.25 to 1.5% of Cr₂O₃ based on the weight of the pelt. Despite the lower amount of chrome tannin used, the resulting leathers exhibit boil resistance, uniform chromium distribution, excellent color levelness, and superior physical properties. Haller's innovative approach has made a significant impact on the leather tanning industry.

Career Highlights

Siegmund Haller has worked with Hoechst Aktiengesellschaft, where he has been able to apply his expertise in leather tanning processes. His career has been marked by a commitment to improving the efficiency and quality of leather production through innovative methods.

Collaborations

Haller has collaborated with notable colleagues such as Karlheinz Fuchs and Werner Lotz. These partnerships have contributed to the development and refinement of his tanning processes, further enhancing their effectiveness and application in the industry.

Conclusion

Siegmund Haller's contributions to the leather tanning industry through his innovative chrome tanning process have established him as a significant figure in the field. His work continues to influence modern tanning practices, showcasing the importance of innovation in industrial processes.