Metalcasting[edit]
Alkyd or oil-urethane binders are used in metalcasting for the creation of sand-based moulds. The alkyd resin is mixed with a polymeric isocyanate and a metallic drier, which speeds the reaction. Unlike other no-bake mould technologies, the process yields no toxic fumes but the moulds need a longer air curing.[3]
Coating types[edit]