Desmolac® binders for customizable elastic coatings

When it comes to flexible plastics, coatings need to protect the plastic substrate and be just as elastic. The tunable flexibility of Desmolac® PU binders makes them perfect for the job because they can be customized for specific applications. And Desmolac® non-functional resins can also be used as co-resins in coatings applied to other flexible substrates. While most polyurethanes are reactive systems that need a hardener or crosslinker for the curing process, sensitive substrates require a non-functional or non-reactive flexible polyurethane system that cures via a physical drying process. On the other hand, an effective way to increase the solvent resistance of coatings based on physically drying Desmolac® binders is to add a polyisocyanate, such as Desmodur® N75. This creates a mild crosslinking reaction with moisture in the air once the coating is applied.