POLYESTER FILM FOR OPTICAL USE

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The present invention refers to polyester film for optical relates to. The present invention refers to polyester substrates on one side or both sides layer polyester film for laminated optical primer layer in, number said primer layer includes oxazoline 2000 as crosslinked polyester via base layer and an adhesion between a primer layer as well as, a strong in primer layer to network useful for enhancing the durability.. Furthermore, the present invention refers to primer layer on prism lens processing, hard coating and AR method for manufacturing a rare-earth on a section of base layer and polyester 210 which is excellent in adhesion between a primer layer, of high-temperature high-humidity conditions even under conditions of high base film with good adhesion is maintained the outputable simultaneously haze 0.4 to 1.5% show optical properties of various optical member in the can be used across the, in particular optical sheet for display, hard coat or AR film base film for CRT and useful protective film of.