The water-based PU coating (WPU) now presented solves this dilemma. By integrating lignin-hybrid hollow silica spheres (LHHS) into a WPU matrix, a highly functional microfibre leather (MWPU-MFL) has been created that simultaneously meets several technical requirements – from breathability to UV protection. Reading tip: Functional CoatingsThe EC Tech Report “Functional Coatings” gives you an up-to-date bundle on functional coatings with articles, videos and other handpicked content. In addition to technical articles about the latest technical developments, this all-in-one multi-media pack is rounded off with valuable market insights and important fundamentals about functional coatings formulation. The study presents a sustainable, water-based strategy for the development of multifunctional artificial leather materials – with strong relevance for technological and environmentally oriented applications.