Title:
染料系偏光素子、または、染料系偏光板
Document Type and Number:
Japanese Patent JP6998428
Kind Code:
B2
Abstract:
[Problem] To provide a dye-based polarizing element or a dye-based polarizing plate wherein there is no elution or precipitation of azo compounds even if moisture is retained due to a humidification process or a water immersion process. [Solution] Provided is a polarizing element comprising a polyvinyl alcohol-based resin film that includes at least one kind of azo compound and has undergone a stretching process, said polarizing element being characterized in that the film contains no more than 70 ppm of an amine compound. Alternately provided is a polarizing plate provided with the polarizing element.
Inventors:
Noriaki Mochizuki
Application Number:
JP2020121219A
Publication Date:
January 18, 2022
Filing Date:
July 15, 2020
Export Citation:
Assignee:
NIPPON KAYAKU KABUSHIKI KAISHA
International Classes:
G02B5/30; G02C7/10; G02C7/12
Domestic Patent References:
| JP6337312A | ||||
| JP2003215338A | ||||
| JP10114831A | ||||
| JP8259834A | ||||
| JP2000290551A | ||||
| JP2006011281A | ||||
| JP2008105225A | ||||
| JP7003172A |
Attorney, Agent or Firm:
Makoto Ono
Kanayama Sage
Yoshiyuki Tsubokura
Kazuki Shigemori
Yoshikazu Iwase
Yasufumi Shiroyama
Kanayama Sage
Yoshiyuki Tsubokura
Kazuki Shigemori
Yoshikazu Iwase
Yasufumi Shiroyama
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