formulae. Such well-established bio-based adhesives currently contain well over 40% organic material. Of course, the actual proportion of renewable raw materials [...] PUR hot-melt adhesives have a low diisocyanate monomer content of less than 0.1%. They can be processed without harmful substances in many production areas.
https://www.jowat.com/en-US/newsroom-detail/strategies-for-green-bonding/