abstract |
Provided is an easily adhesive polyester film for optics that suppresses iris-like color under a fluorescent lamp and is excellent in adhesion to a hard coat layer and adhesion (humidity heat resistance) under high temperature and high humidity. An aqueous polyurethane resin (A) and a water-soluble titanium chelate compound, a water-soluble titanium acylate compound, a water-soluble zirconium chelate compound, or a water-soluble zirconium acyl compound are formed on at least one surface of a biaxially stretched polyester film. An aqueous coating solution containing a resin composition having a mixing ratio (mass ratio) of (A) / (B) of 10/90 to 95/5, the main component being at least one kind of rate compound (B). An optically easy-adhesive polyester film obtained by laminating a coating layer stretched in at least one direction after drying. [Selection figure] None |