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    • 92. 发明专利
    • Easily adhesive polyester film for optical use
    • 轻松粘合聚酯薄膜用于光学使用
    • JP2014065887A
    • 2014-04-17
    • JP2013106235
    • 2013-05-20
    • Toyobo Co Ltd東洋紡株式会社
    • SAWADA KAORUMURATA KOICHINAKATANI MITSUHARUYAMAGUCHI YOHEITAKI HIROSHIKUROIWA HARUNOBU
    • C08J7/04B32B27/20B32B27/36C09J7/02C09J11/04C09J11/06C09J167/00G02B1/10G02B5/30
    • 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.
    • 要解决的问题:为了提供在荧光灯下抑制虹彩色调的用于光学用途的容易粘合的聚酯膜,在高温和高湿度条件下显示出优异的与硬涂层的粘附性和优异的粘合性(耐湿热性),以及 具有耐刮擦性的涂层。解决方案:用于光学用途的易粘合聚酯膜包括具有3000至30000nm延迟的聚酯膜和至少包含聚酯树脂,颗粒A和颗粒B的涂层 聚酯薄膜的一个表面。 聚酯树脂包含作为酸组分的萘二甲酸和由式(1)表示的二羧酸组分:HOOC-(CH)n -COOH(其中n为满足4≤n≤10的整数)和/或二醇 由式(2)表示的组分:HO-(CH)n -OH(其中n为满足4≤n≤10的整数)。 颗粒A是折射率为1.7以上且3.0以下的金属氧化物粒子, 粒子B为平均粒径为200nm以上且700nm以下的粒子。