OPTICAL LAMINATED POLYESTER FILM, HARD COAT FILM USING THE FILM, AND FILTER FOR PLASMA DISPLAY PANEL USING THE FILMS

摘要

PPROBLEM TO BE SOLVED: To provide an ultraviolet-absorbent optical laminated polyester film which suppresses iris-like coloring under a fluorescent lamp and is excellent in adhesion to a hard coat layer and moisture/heat resistant adhesion. PSOLUTION: The optical laminated polyester film has at least three laminated layers including the outermost layer A/an intermediate layer B/the outermost layer C and has an easy adhesion layer a in the outermost layer of at least one surface of a biaxially oriented laminated polyester film containing an ultraviolet absorber in the intermediate layer B. The easy adhesion layer a contains an aqueous polyester resin (A) and at least one (B) of a water-soluble titanium chelate compound, a water-soluble titanium acylate compound, a water-soluble zirconium chelate compound and a water-soluble zirconium acylate compound as a main component. In the optical laminated polyester film, a water-base coating solution with a mixing ratio (A)/(B) of 10/90-95/5, after being applied and dried, is stretched in at least one direction to form a coating layer. PCOPYRIGHT: (C)2006,JPO&NCIPI