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    • 5. 发明专利
    • Transparent pressure-sensitive adhesive film and image display
    • 透明感压敏胶片和图像显示
    • JP2013147569A
    • 2013-08-01
    • JP2012009074
    • 2012-01-19
    • Hitachi Chemical Co Ltd日立化成株式会社
    • TOMIYAMA TAKEOYOSHIDA AKIHIROHOSHI YOSUKEYAMAZAKI KOJISHINTANI KENICHI
    • C09J7/02C09J4/06C09J11/06C09J133/00G02F1/1333H01L51/50H05B33/02
    • PROBLEM TO BE SOLVED: To provide a transparent pressure-sensitive adhesive film the embedding properties of which to a step to be formed in a decoration part can be made excellent and in which seepage from the end of a base material film can be reduced satisfactorily.SOLUTION: The transparent pressure-sensitive adhesive film contains a monomer unit derived from alkyl (meth)acrylate having a 4-18C straight-chain or branched-chain alkyl group and another monomer unit derived from a monomer having a cyclic group. The transparent pressure-sensitive adhesive film has 0.01-0.35 total strain εand 0.01-0.20 plastic strain εwhen such a compression-unloading cycle test is performed at 25°C that 0-0.5 (maximum) MPa of compressive stress is exerted on the transparent pressure-sensitive adhesive film and then the compressive stress is relieved, and 0.25-0.5 total strain εand 0.1-0.3 plastic strain εwhen such the compression-unloading cycle test is performed at 50°C that 0-0.5 (maximum) MPa of the compressive stress is exerted on the transparent pressure-sensitive adhesive film and then the compressive stress is relieved.
    • 要解决的问题:为了提供一种透明的压敏粘合剂膜,可以使其在装饰部件中形成的步骤的嵌入性能优异,并且可以令人满意地降低基材膜的端部的渗漏。 解决方案:透明压敏粘合剂膜含有源自具有4-18个直链或支链烷基的(甲基)丙烯酸烷基酯的单体单元和源自具有环状基团的单体的另一单体单元。 当在25℃下进行这样的压缩 - 卸载循环试验,施加0-0.5(最大)MPa的压缩应力时,透明压敏粘合剂膜具有0.01-0.35总应变和0.01-0.20塑性应变 在透明压敏粘合剂膜上,然后压缩应力消除,并且在50℃下进行压缩 - 卸载循环试验时,0.25-0.5总应变和0.1-0.3塑性应变等于0-0.5 压缩应力的(最大)MPa施加在透明压敏粘合剂膜上,然后减轻压缩应力。