Title:
OPTICAL FILM AND POLARIZING PLATE
Document Type and Number:
WIPO Patent Application WO/2022/176849
Kind Code:
A1
Abstract:
[Problem] To provide a (meth)acrylic resin optical film which has improved adhesion to a polarizer in a high temperature, high humidity environment. [Solution] The present invention provides an optical film which comprises a resin layer that contains a (meth)acrylic resin, and wherein: with respect to the resin layer, if E23(MD) is the tensile elastic modulus in the MD direction at 23°C and E23(TD) is the tensile elastic modulus in the TD direction at 23°C, 0.5 ≤ E23(TD)/E23(MD) ≤ 1.5 is satisfied; and the resin layer has an absorbed energy of 140 kJ/m2 or more at 23°C as determined by a Charpy impact test. [Selected drawing] FIG. 2
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Inventors:
YASUI MIO (JP)
KITAGAWA NAOMASA (JP)
CHEN PEIWEN (JP)
YAWATA NAOKI (JP)
KITAGAWA NAOMASA (JP)
CHEN PEIWEN (JP)
YAWATA NAOKI (JP)
Application Number:
PCT/JP2022/005933
Publication Date:
August 25, 2022
Filing Date:
February 15, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; B32B27/30; G02B1/14; G09F9/00; G09F9/30
Domestic Patent References:
| WO2020111082A1 | 2020-06-04 | |||
| WO2016002750A1 | 2016-01-07 | |||
| WO2016080124A1 | 2016-05-26 |
Foreign References:
| JP2020164680A | 2020-10-08 | |||
| JP2017205941A | 2017-11-24 | |||
| JP2016075939A | 2016-05-12 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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