Method of mitigating ice build-up on a substrate

摘要

The present invention is directed to a method of mitigating ice build-up on a substrate, comprising applying to the substrate curable film-forming compositions comprising isocyanate-functional curing agents, film-forming compositions with functional groups reactive with the isocyanates, acrylic polymers having polysiloxane side chains, and polysiloxanes.

主权项

1. A method of mitigating ice build-up on a substrate, comprising applying to at least a portion of the substrate a curable film-forming composition comprising:
(a) a curing agent comprising isocyanate functional groups; (b) a film-forming polymer comprising functional groups reactive with the isocyanate groups in (a); (c) an acrylic polymer comprising (i) pendant functional groups reactive with the isocyanate groups in (a) and (ii) polysiloxane side chains; and (d) a polysiloxane different from the film-forming polymer (b) and the acrylic polymer (c), wherein upon application of the curable film-forming composition to the substrate and upon curing, the coated substrate demonstrates an initial maximum average load force of 200 N when subjected to ICE ADHESION TEST, and wherein after 1600 hours of accelerated weathering, the coated substrate demonstrates a maximum average load force of 400 N when subjected to ICE ADHESION TEST.