Invention Grant
- Patent Title: Polarizing film, method for producing same, optical film, and image display device
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Application No.: US16094303Application Date: 2017-03-06
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Publication No.: US10901129B2Publication Date: 2021-01-26
- Inventor: Masayuki Okamoto , Satoshi Mita , Yoshimi Konno , Taiyan Jiang , Tetsuro Ikeda
- Applicant: NITTO DENKO CORPORATION
- Applicant Address: JP Ibaraki
- Assignee: NITTO DENKO CORPORATION
- Current Assignee: NITTO DENKO CORPORATION
- Current Assignee Address: JP Ibaraki
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2016-084757 20160420
- International Application: PCT/JP2017/008739 WO 20170306
- International Announcement: WO2017/183334 WO 20171026
- Main IPC: C09J4/00
- IPC: C09J4/00 ; C09J133/00 ; B32B7/12 ; C09J11/06 ; G02B5/30 ; G02F1/1335 ; B29D11/00 ; G02F1/13363 ; C09J7/38

Abstract:
A polarizing film, wherein transparent protective films are laid, respectively, on/over both surfaces of a polarizer to interpose an adhesive layer (a) and an adhesive layer (b), respectively, between both the surfaces and the transparent protective films. The adhesive layer (a) has a glass transition temperature of −60° C. or higher and lower than 40° C. The adhesive layer (b) has a glass transition temperature of 40° C. or higher. The adhesive layer (a) is a layer formed in the form of a cured product layer yielded by radiating an active energy ray to an active-energy-ray-curable adhesive composition (a). The active-energy-ray-curable adhesive composition (a) comprises at least one or more radical polymerizable compounds, and when a total amount of the radical polymerizable compound(s) is defined as 100% by weight, one or more alkyl (meth)acrylates (A) (each) having 10 to 20 carbon atoms are comprised in a proportion of 15% or more by weight.
Public/Granted literature
- US20190137673A1 POLARIZING FILM, METHOD FOR PRODUCING SAME, OPTICAL FILM, AND IMAGE DISPLAY DEVICE Public/Granted day:2019-05-09
Information query
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