TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The double bond component (h) is styrene-type monomer, acrylic acid-type monomer, methacrylic acid-type monomer and/or acrylonitrile-type monomer. The ratio of structural unit derived from component (a) in polymer (A) is 1-80 %mass. The coating material is obtained by crosslinking-reacting using a crosslinking agent chosen from at least one of epoxy compound, carbodiimide compound, aziridine compound, oxazoline compound and isocyanate compound.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The component (A) is compound (a) having double bond and ultraviolet-absorption group, or polymerization product obtained by polymerizing polymerization component formed by containing double component (h). The compound (a) is of formula (I)-(IV). The content of polymer (A) is 0.1-50 %mass with respect to total solid mass reference in coating material. The polyurethane (B) is compound (b) having active hydrogen-containing group and anionic hydrophilic group (excluding hydroxyl group), and reaction component formed by reacting reaction product formed using polyol (c) and/or polyamine (d), and polyisocyanate (e). The reaction component further contains short-chained diol component (f) and/or short-chained diamine component (g). The compound (b) is of formula: (HO-R')n-R-(R"-X'm)l (V), preferably dimethylol alkanoic acid. The equivalence ratio of active hydrogen-containing group excluding anionic hydrophilic group in component (b) with respect to isocyanate group of the polyisocyanate is 0.9-1.5. A solution or aqueous dispersion of component (A) is added to the produced urethane prepolymer, during manufacture of coating material. Preferred Properties: The glass transition temperature of temperature of polymer (A) in which dissolution or dispersion in water is possible, is -20 degrees C to 160 degrees C. The component (A) has weight average molecular weight of 1000-1500000, and acid value of 2-200 mg potassium hydroxide/g. The weight average molecular weight of polyurethane (B) is 1000-500000.X=halo, H or 10C or less alkyl;R1=H or 10C or less alkyl;R2=single bond, 10C or less alkylene, 10C or less oxyalkylene or 10C or less hydroxy oxyalkyelne;R3=H or methyl;R'1=single bond, 20C or less alkylene, 20C or less oxyalkylene or 20C or less hydroxyalkoxy;R4-R7=H, alkyl or alkoxy;R'=alkylene, cycloalkyl or aryl;R"=single bond, alkylene, cycloalkyl or aryl;X'=-COOH, -SO3H or -PO3H2;n,m=1 or 2;andl=1-3.