Phenolic monomers in aromatic syntans: the influence on leather Aromatic syntans are widely used in the (re)tanning of leathers. Phenolic monomers such as phenol, phenolsulfonic acid, bisphenol S, and bisphenol F are common compounds in aromatic syntans. Whitepaper Color Analysis on Leather The SmiTool Light and Heat already discussed the subject of heat yellowing and light fastness tests on leather. The current SmiTool explains the differences between subjective and objective assessments of tested leather and how to report test results for heat yellowing and light fastness. Biopol collection The Smit & Zoon company developed new range of Biopol products. These are based on the concept of the circular economy. Circular economy focuses on the utilization of renewable sources, waste streams reutilization or smart utilization of low(no)-value biomass side-streams minimizing product environmental footprint. Stay informed. Subscribe to our newsletter Subscribe Whitepaper Leather Tightness Learn about the important aspects when making tight leather, the influence of post-tanning processes and which products are most suitable for your optimal leather properties. Whitepaper Leather Softness Learn about the important aspects when making soft leather, the influence of wet-end processes and which products are most suitable for your optimal leather properties. Whitepaper: Waterproof leather making This process guideline is written alongside a checklist to increase the chance to make high quality waterproof leather. Whitepaper Leather Strength Learn about the different ways to measure leather strength (e.g. tear strength, tensile strength), the causes of strength loss, and remedies to reduced leather strength. Whitepaper Fatty spew In this whitepaper on fatty spew you can learn about its background, where it comes from, and what can be done to prevent its formation. Whitepaper Light fastness & Heat resistance Learn about the yellowing of leather by the influence of warmth and/or light and time. How do you minimize the risk and how are the assessments done? Whitepaper Simplicity Simplicity is a concept for reducing the complexity at the heart of your operations: the leather-making process itself. Simplicity is an approach developed by Smit & zoon to simplify and boost the efficiency of post-tanning operations Knowledge center Go to all knowledge items Knowledge Stay informed Receive the latest company news and industry updates Subscribe
