| 摘要 |
To provide a back coating composition capable of forming a back coating film which is scarcely susceptible to acid erosion, and a mirror excellent in acid resistance. Using a back coating composition comprising a thermosetting resin, a pigment and a dispersant, wherein as the dispersant, an amino group-containing polymer having an amine value of at least 20 mgKOH/g and having no acid group is contained, a back coating film 14 is formed on a metal film (silver mirror film 12 or metal protective film 13) of a mirror 10. |
