发明授权
- 专利标题: Pressure-sensitive adhesive for polarizing plates, pressure-sensitive adhesive sheet, polarizing plate with pressure-sensitive adhesive and production process for the same and optical film and production process for the same
- 专利标题(中): 用于偏光板的压敏粘合剂,压敏粘合片,带有压敏粘合剂的偏光板及其制造方法及其制造方法及其制造方法
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申请号: US11611947申请日: 2006-12-18
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公开(公告)号: US08993649B2公开(公告)日: 2015-03-31
- 发明人: Koichi Nagamoto , Kentaro Kusama , Mikihiro Kashio , Kazuhiro Kon , Motoyuki Hayakawa
- 申请人: Koichi Nagamoto , Kentaro Kusama , Mikihiro Kashio , Kazuhiro Kon , Motoyuki Hayakawa
- 申请人地址: JP Tokyo
- 专利权人: Lintec Corporation
- 当前专利权人: Lintec Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2006-006653 20060113; JP2006-203584 20060726
- 主分类号: B32B9/00
- IPC分类号: B32B9/00 ; B32B15/04 ; C03C6/00 ; C08G18/67 ; G02B5/30 ; B32B37/12 ; C09D4/06 ; C09J7/00 ; C09J7/02 ; G02B7/00 ; G02F1/1335 ; G02F1/13363
摘要:
Provided is a pressure-sensitive adhesive for polarizing plates which can adhere a polarizing plate on a liquid crystal cell with good adhesion durability and has the characteristic that a liquid crystal display device obtained therefrom is less liable to cause light leakage even under the environment of high temperature and high humidity and which makes it possible remove the polarizing plate.The pressure-sensitive adhesive for polarizing plates is prepared by irradiating a pressure-sensitive adhesive material comprising (A) an acrylic base polymer having a weight average molecular weight of 1,000,000 or more comprising a monomer having a hydroxyl group in a monomer composition ratio of 10 mass % or less, (B) an acrylic base polymer having a weight average molecular weight of 1,000,000 or more comprising a monomer having a carboxyl group in a monomer composition ratio of 10 mass % or less and (C) an active energy beam-curable compound with an active energy beam, wherein a mass ratio of the component (A) to the component (B) is 100:1 to 100:50, and a storage elastic modulus (G′) at 23° C. is 0.3 MPa or more.