By Eva Tejada Rosales, Berta Vega Sánchez, Matthias Wintermantel, Covestro. UV-curing polyurethane (PU) wood coatings have been on the market since the 1990s. The combination of positive market relevant properties led to the current outstanding market position. First, they exhibit extremely fast curing and high productivity. Market analysts describe the reduction in production times associated with UV-curing products as one of the key cost-influencing factors [1]. Second, those products emit fewer volatile organic compounds (VOCs) than conventional solvent-borne coatings. Third, they are highly resistant to chemicals and mechanical ...