Title:
OPTICAL FILM, POLARIZING PLATE, IMAGE DISPLAY DEVICE, AND METHOD FOR MANUFACTURING OPTICAL FILM
Document Type and Number:
WIPO Patent Application WO/2022/239648
Kind Code:
A1
Abstract:
[Problem] To provide an optical film that excels in initial adhesiveness with respect to both a water-based adhesive and a UV-curable adhesive, and also excels in durable adhesiveness with respect to long-term use in high temperature, high humidity conditions. [Solution] An optical film comprising: a thermoplastic resin film including a (meth)acrylic resin having a ring structure in the main chain; and a readily-adhering layer provided on at least one surface of the thermoplastic resin film, the optical film being characterized in that the readily-adhering layer is formed from a readily-adhering composition comprising a water-dispersible polyurethane resin (A) having a carboxyl group and an acid value of 15-35 mgKOH/g, and an epoxy compound (B).
Inventors:
KUSUHARA MASAKI (JP)
MATSUMOTO TADAHIRO (JP)
YOSHIZAWA MASAHIRO (JP)
MATSUMOTO TADAHIRO (JP)
YOSHIZAWA MASAHIRO (JP)
Application Number:
PCT/JP2022/018983
Publication Date:
November 17, 2022
Filing Date:
April 26, 2022
Export Citation:
Assignee:
OKURA INDUSTRIAL CO LTD (JP)
International Classes:
B32B7/023; G02B5/30; B32B27/30; B32B27/40; C08L63/00; C08L75/04; C09D5/00; C09D163/00; C09D175/04; C09J201/00; G02F1/1335; G09F9/00; H01L27/32; H01L51/50; H05B33/02
Domestic Patent References:
| WO2015098750A1 | 2015-07-02 | |||
| WO2016088633A1 | 2016-06-09 | |||
| WO2016072437A1 | 2016-05-12 |
Foreign References:
| JP2015024511A | 2015-02-05 | |||
| JP2017145388A | 2017-08-24 | |||
| JP2016033552A | 2016-03-10 |
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