Polybenzoxazines are well established in aerospace and electronics due to their excellent thermal and mechanical performance. A research team has now proposed a concept that addresses these challenges by combining bio-based monomers with dynamic dihydrazone bonds. Reading tip: Bio-based coatingsThe EC Tech Report “Bio-based Coatings” is a hand-picked compilation of all the key aspects concerning bio-based coatings, offering the latest technical developments. High thermal resistance with targeted degradationThe resulting resin exhibited a char yield of 59.5 % at 800 °C, on par with petroleum-based analogues. At the same time, the dynamic network enabled targeted degradation under different conditions: elevated temperature, acetone–water mixtures (2:8 v/v), and 0.1 M HCl at 50 °C.