Desmocoll 420 Hydroxyl polyurethane Bayer PU - Thermoplastic (TPU) ADHESIVE >> Solvent based Predominantly linear hydroxyl polyurethane Desmocoll 420 is a flexible polyurethane with a high crystallisation rate. It has good adhesion on many flexible PVC substrates. Compared with Desmocoll 400 it has lower thermoplasticity and therefore yields bonds with higher heat resistance. Granules Desmocoll 420 is suitable for the formulation of adhesives for use on various materials, e.g. leather, textile, wood, many plastics (including PU elastomers), plastic films and aluminium foils. polyurethane for the production of adhesives with good adhesion to numerous materials, in particular also to plasticized PVC. Linear flexible hydroxyl polyurethane with a high crystallisation rate and low thermoplasticity. Provides good adhesion on many flexible PVC substrates and bonds with high heat resistance.