Title:
ADHESIVE LAYER-ATTACHED POLARIZING FILM HAVING SEPARATOR
Document Type and Number:
WIPO Patent Application WO/2023/022029
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an adhesive layer-attached polarizing film having a separator, whereby both easy peelability of the separator and high temperature durability of the adhesive layer are achieved. In the adhesive layer-attached polarizing film having a separator according to the present invention, an adhesive layer with a separator comprises an adhesive layer on the separator and is provided on one or both sides of a polarizing film. The separator has a release layer on a base material film. The release layer contains a reactive silicone resin having a reactive functional group, and a non-reactive silicone resin having a weight average molecular weight of 400,000 or greater. In 100 mass% of the total content of the reactive silicone resin and the non-reactive silicone resin, the content of the reactive silicone resin is 50-70 mass%, and the content of the non-reactive silicone resin is 30-50 mass%. The modulus of elasticity of the release layer is less than 1.5 MPa. The adhesive layer is provided on the release layer, and the adhesive layer is characterized in containing a base polymer that contains a carboxyl group-containing monomer 0.5 mass% or greater as a monomer unit.
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Inventors:
MORIMOTO YU (JP)
MOTOOKA SAKINA (JP)
HANDA ITARU (JP)
MOTOOKA SAKINA (JP)
HANDA ITARU (JP)
Application Number:
PCT/JP2022/030131
Publication Date:
February 23, 2023
Filing Date:
August 05, 2022
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; B32B27/00; C09J7/38; C09J7/40; C09J201/08
Domestic Patent References:
| WO2020179509A1 | 2020-09-10 |
Foreign References:
| JP2017170672A | 2017-09-28 | |||
| JP2021080422A | 2021-05-27 | |||
| JP2014129508A | 2014-07-10 | |||
| JP2008254207A | 2008-10-23 | |||
| JP2012137567A | 2012-07-19 |
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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