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    • 4. 发明申请
    • OPTICAL STACK COMPRISING ADHESIVE
    • 包含粘合剂的光学堆叠
    • WO2012138495A1
    • 2012-10-11
    • PCT/US2012/030510
    • 2012-03-26
    • 3M INNOVATIVE PROPERTIES COMPANYEDMONDS, William F.CARTER, Brandt K.PETAJA, Jason S.
    • EDMONDS, William F.CARTER, Brandt K.PETAJA, Jason S.
    • C09J133/08
    • G02B5/045C08L2205/04C09J7/38C09J133/08C09J151/06
    • Presently described are optical stacks comprising a first optical film comprising a plurality of structures comprising an optically active portion designed primarily to provide optical gain and optionally an optically in-active bonding portion disposed on a first surface bonded to a second optical film with a light-transmissive adhesive layer such that a portion of the structures penetrate the adhesive layer and a separation is provided between the adhesive layer and the first surface. In one embodiment, the optical stacks exhibit a combination of high peel strength and high retained brightness, particularly after aging. The adhesive layer preferably comprises an interpenetrating network of the reaction product of a polyacrylate component and a polymerizable monomer and the adhesive layer has an elastic modulus ranging from 100 to 2000 MPa at 25°C.
    • 目前描述的是包括第一光学膜的光学堆叠,该第一光学膜包括多个结构,该多个结构包括主要用于提供光学增益的光学活性部分和可选地设置在与第二光学膜结合的第一表面上的光学活性粘合部分, 透明粘合剂层,使得一部分结构穿透粘合剂层,并且在粘合剂层和第一表面之间提供分离。 在一个实施例中,光学堆叠表现出高剥离强度和高保留亮度的组合,特别是在老化之后。 粘合剂层优选包含聚丙烯酸酯组分和可聚合单体的反应产物的互穿网络,并且粘合剂层在25℃下的弹性模量为100至2000MPa。