Title:
AZO COMPOUND OR SALT THEREOF, AS WELL AS DYE-TYPE POLARIZER FILM AND DYE-TYPE POLARIZER PLATE INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2018/135618
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a high-performance polarizer film and polarizer plate that, while being a stretched film using a dichroic dye having absorption in the infrared region, function with respect to light rays on the infrared wavelength; and an azo compound or salt thereof that enables production of the same. Provided is an azo compound or salt thereof that is represented by formula (1) (in the formula, A1 and A2 are each independently a hydrogen atom or are represented by formula (2), provided: the case in which A1 and A2 are both hydrogen atoms is excluded; when A1 is a hydrogen atom, Ra is a hydroxy group; when A1 is represented by formula (2) or formula (3), Ra is the same as Rc or Rd and forms -O-Cu-O-; when A2 is a hydrogen atom, Rb is a hydroxy group; and when A2 is represented by formula (2) or formula (3), Rb is the same as Rc or Rd and forms -O-Cu-O-).
Inventors:
HIGETA TAKAHIRO (JP)
MOCHIZUKI NORIAKI (JP)
MOCHIZUKI NORIAKI (JP)
Application Number:
PCT/JP2018/001588
Publication Date:
July 26, 2018
Filing Date:
January 19, 2018
Export Citation:
Assignee:
NIPPON KAYAKU KK (JP)
POLATECHNO CO LTD (JP)
POLATECHNO CO LTD (JP)
International Classes:
C09B45/28; G02B5/30; G02F1/1335
Domestic Patent References:
| WO2012165223A1 | 2012-12-06 | |||
| WO2009078253A1 | 2009-06-25 | |||
| WO2010109843A1 | 2010-09-30 |
Foreign References:
| JP2016147943A | 2016-08-18 |
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, P.C. (JP)
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