Technical lignin is only suitable for direct use to a limited extent; a major obstacle here is the complex and heterogeneous structure of lignin. More precisely, polydispersity and the resulting uncertain reactivity are the biggest limiting factors for further use without additional modification. In contrast to cellulose and hemicellulose, the two other main components of plant materials, lignin is highly branched, heterogeneous, and without a defined recurring structural unit in the biomass. Lignin is also extracted in this state by various technical processes, whereas most carbohydrates can be extracted as uniform monomers. The different extraction processes change lignin in such a way that technical lignin differs from natural lignin. Especially the frequently occurring ether bonds in lignin, above all the β-O-4 bond, are split . However, despite this modification, the general problem of the complex structure is hardly resolved. The pulping processes can additionally influence the type and number of reactive sites as well as the polydispersity due to repolymerisation reactions . Lignosulfonates (~1000 -400000 g/mol) have the widest range of polydispersities. Kraft lignin (~1500 -25000 g/mol), soda lignin (~1000 -15000 g/mol), and organosolv lignins (~500 -5000 g/mol) mostly have lower values for Mw (weight average molar mass) and a narrower polydispersity . The most common applications for various technical lignins without extensive modifications are for example: Surface active agents, additives in bitumen, cement, and animal feed as well as embedding in phenolic resins, elastomers, and polyolefins .