Title:
OPTICAL LAMINATE
Document Type and Number:
WIPO Patent Application WO/2022/250025
Kind Code:
A1
Abstract:
[Problem] To suppress, in an optical laminate including a polarizer on which iodine is adsorbed and oriented, a rise in the iodine concentration of a pressure-sensitive adhesive layer stacked on the optical laminate. [Solution] Provided is an optical laminate including a polarizing plate including a polarizer, and an optical functional layer including at least one adhesive layer, wherein the polarizer is a polyvinyl alcohol-based resin film on which iodine is adsorbed and oriented, and the adhesive layer contains a total of 1-10 mass% of a low molecular component with a molecular weight of 500 or less.
Inventors:
SHIRAISHI TAKAYUKI (JP)
SUZUKI HIROMASA (JP)
JINNO TORU (JP)
SUZUKI HIROMASA (JP)
JINNO TORU (JP)
Application Number:
PCT/JP2022/021160
Publication Date:
December 01, 2022
Filing Date:
May 23, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
G02B5/30; B32B7/023; B32B27/00; B32B27/30; C09J4/00; C09J7/29; C09J7/38
Domestic Patent References:
| WO2019093501A1 | 2019-05-16 |
Foreign References:
| JP2020067624A | 2020-04-30 | |||
| JP2010044211A | 2010-02-25 | |||
| JP2016071343A | 2016-05-09 | |||
| JP2016040365A | 2016-03-24 | |||
| US20200088926A1 | 2020-03-19 |
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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