Curable film-forming compositions and coated structures with improved corrosion resistance and durability

Abstract

The present invention is directed to curable film-forming compositions and coating kits comprising: (1) a resinous component comprising: (a) an acrylic polyol; (b) an aliphatic ketimine that is substantially free, essentially free and/or completely free of silane functional groups; and optionally (c) a polyaspartic ester; and (2) a curing agent comprising at least two different aliphatic polyisocyanates. The present invention is further directed to coated structures comprising: (a) a component of a vehicle, building, bridge, industrial protective structure, construction equipment structure, ship, railcar, railcar container, water tower, power line tower, tunnel, oil or gas industry structure, marine structure, aerospace structure, bridge support structure, pipeline, oil rig, storage tank, or wind turbine, wherein the component comprises a metal substrate; and (b) a cured coating formed from the curable film-forming composition described above, applied directly or indirectly to at least one surface of the substrate.

Dependencies are inferred from the claim text.