| abstract |
(57) [Problem] To provide a coating composition for realizing a protective film having excellent adhesion. SOLUTION: A specific carboxyl group-containing polymer, A coating composition comprising a specific polyfunctional epoxide group-containing compound containing two or more epoxy groups, an organic solvent, and an amino group-containing silane coupling agent represented by the following general formula (I): object. H 2 N—R 1 —Si— (OR 2 ) 3 (I) (wherein, R 1 is an unsubstituted alkylene group, and R 2 is each independently an unsubstituted alkyl group.) |