| 摘要 |
PROBLEM TO BE SOLVED: To provide an easily adhesive polyester film for optical use, which suppresses iridescent hue under fluorescent light, shows excellent adhesiveness to a hard coat layer and excellent adhesiveness (moisture-heat resistance) under high temperature and high humidity conditions, and has resistance to scraping in a coating layer.SOLUTION: The easily adhesive polyester film for optical use comprises a polyester film having a retardation of 3000 to 30000 nm and a coating layer that comprises a polyester resin, particles A and particles B, on at least one surface of the polyester film. The polyester resin comprises a naphthalene dicarboxylic acid as an acid component and a dicarboxylic acid component expressed by formula (1):HOOC-(CH)n-COOH (where n is an integer satisfying 4≤n≤10) and/or a diol component expressed by formula (2):HO-(CH)n-OH (where n is an integer satisfying 4≤n≤10). The particles A are metal oxide particles having a refractive index of 1.7 or more and 3.0 or less; and the particles B are particles having an average particle diameter of 200 nm or more and 700 nm or less. |
