One commonly used example is dibutyltin dilaurate (DBTDL) , which is also used for the synthesis of polyesters and many other elastomers, especially for coating applications . However, tin-based compounds are also toxic (with toxicity threshold of 3 ppm ), and thus they are also difficult and costly to remove from many polymers, including poly(urethane-amides) , polyurethanes or polylactides . Therefore, there is a need to develop new and non-toxic-or at least less toxic-compounds for the synthesis of polymers and polymer networks, especially for food packaging or the medical industry.