NUEVO METODO DE PULVERIZACION DE AMINA VAPORIZADA CATALITICAPARA FORMAR UNA PELICULA POLIMERICA SOBRE UN SUSTRATO

摘要

Disclosed is a novel method for applying a film of a coating composition in liquid form onto a substrate which applied film cures rapidly at room temperature without heat curing. The coating composition comprises a hydroxyl-functional compound (preferably bearing aromatic-hydroxyl groups) and a multi-isocyanate cross-linking agent, optionally dispersed in a fugitive organic solvent therefor. The method comprises the steps of: (a) concurrently generating an atomizate of said coating composition and a carrier gas bearing a catalytic amount of a vaporous tertiary amine; (b) mixing said atomizate and said vaporous catalytic amine-bearing carrier gas flow; and (c) directing said mixture of step (b) onto said substrate to form said applied film.