Bitumen-based coating systems have many different uses, such as sealing pipes and tanks, for example. However, as petrochemical materials, they perform poorly in environmental balance and they also contain non-biodegradable surfactants. The research project “BeStKat – Multifunctional coating system based on cationic surfactants consisting of vegetable oil,” saw the development of the first partially biogenic coating systems that could be used for the same purposes as bitumen. Rather than fossil fuels, these new systems rely on vegetable oils and functionalized lignin. The researchers are hoping that their solution will not only be more environmentally sustainable, but will also offer a coating system that has a wider range of properties and will be easier to work with.