Yunhang Zeng

Title: Innovations of Yunhang Zeng in Eco-Friendly Leather Tanning

Introduction

Yunhang Zeng is a notable inventor based in Chengdu, China. He has made significant contributions to the field of ecological leather tanning, holding 2 patents that focus on innovative processes and materials. His work aims to enhance the quality and sustainability of leather production.

Latest Patents

One of his latest patents is titled "Chrome-free tanning process of ecological leather." This invention introduces a ternary tanning process system that utilizes TWS, sodium lignosulfonate, and TWLZ. The addition of sodium lignosulfonate not only stabilizes the TWS tanning agent at low pH levels but also improves the distribution of the TWLZ tanning agent within the hide or skin. This results in a stable cross-linked network structure in collagen fibers, overcoming the limitations of existing tanning systems. The outcome is leather that boasts uniform tanning, a high isoelectric point, strong electropositivity, excellent absorption of post-tanning chemicals, and remarkable softness.

Another significant patent is for a "Light-colored polycarboxylated polysaccharide tanning agent, and preparation method and use thereof." This invention includes a unique combination of raw materials such as polysaccharides, organic solvents, catalysts, and hydrogen peroxide. The preparation method employs a two-phase solution system, which effectively extracts and removes colored substances produced during the oxidation process. This innovation significantly reduces the chromaticity of the oxidized product, enhancing the quality of the final tanning agent.

Career Highlights

Yunhang Zeng has worked with prominent institutions, including Sichuan University and the Research Institute of Leather and Footwear Industry of Wenzhou. His experience in these organizations has allowed him to develop and refine his innovative tanning processes.

Collaborations

Yunhang has collaborated with notable colleagues such as Yanan Wang and Yue Yu. Their combined expertise has contributed to the advancement of eco-friendly leather technologies.

Conclusion

Yunhang Zeng's contributions to the field of ecological leather tanning demonstrate his commitment to innovation and sustainability. His patents reflect a deep understanding of materials and processes that enhance leather quality while minimizing environmental impact.