Curable film-forming composition exhibiting increased wet-edge time

摘要

(A) a curing agent comprising a reactive isocyanate functional group; (b) a film-forming compound comprising a functional group reactive with the reactive isocyanate functional group in (a) above; (c) a light-potential catalyst; (d) a beta-diketone having a flash point of greater than 140 DEG F (60 DEG C); And (e) a beta-diketone having a flash point of less than or equal to 60 DEG C (140 DEG F). The present invention also relates to a curable film-forming composition comprising (i) a photo-latent catalyst; (ii) a beta-diketone having a flash point of greater than 60 DEG C (140 DEG F); And (iii) a catalyst component comprising an aliphatic beta-diketone having a flash point of less than or equal to 140 0 F (60 0 C), to control the cure rate of the curable film-forming composition comprising the isocyanate- - how to increase edge time.