Patent ID: 8541059

Claim:
A polyurethane coating composition comprising: a) an isocyanate component comprising: 70 wt % to 99 wt % of an aliphatic isocyanate, wherein the aliphatic isocyanate comprises polymeric hexamethylene diisocyanate; and 1 wt % to 30 wt % of an aromatic isocyanate, wherein the aromatic isocyanate comprises polymeric methylene diphenyl diisocyanate; wherein wt % is based on the total solids weight of the isocyanate component; and b) a polyol component comprising: 40 wt % to 80 wt % of a hard acrylic polyol; 10 wt % to 40 wt % of a soft acrylic polyol; and 5 wt % to 30 wt % of a polyester polyol; wherein wt % is based on the total solids weight of the polyol component; and wherein the coating composition cures at room temperature.