| abstract |
A coating agent comprising a polymer comprising a copolymerized unit of an ultraviolet absorber having an unsaturated double bond, and a coating of the substrate, the coating of the primer and the coating of the multilayer coating, the multilayer coating including the coating, is excellent for the substrate. It exhibits weather resistance and improves its surface properties such as surface hardness, scratch resistance, wear resistance and surface gloss. Thus, the coating imparts excellent durability to the coating and suppresses the deterioration of the substrate due to gas phase changes. |