Process for removing unreacted isocyanate from the reaction product

Process for removing isocyanate from a reaction product of isocyanate concompuestos reactive toward isocyanates, wherein the reaction product on superficiede a rotating body A is applied, flowing the reaction product on the surface of the rotating body A to zonaexterna one surface of the rotating body a, and evaporated in this case isocyanate, which was used to laobtencion reaction product and not converted, from the mixture.