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Title:
AZO COMPOUND OR SALT THEREOF, AND DYE-BASED POLARIZING FILM AND DYE-BASED POLARIZING PLATE EACH CONTAINING SAME
Document Type and Number:
WIPO Patent Application WO/2020/137691
Kind Code:
A1
Abstract:
An azo compound which is represented by formula (1) or a salt of this azo compound. (In formula (1), A1 represents an optionally substituted phenyl group or an optionally substituted heterocyclic group; each of A2, A3 and A4 independently represents an optionally substituted phenyl group or an optionally substituted naphthyl group; R1 represents a hydrogen atom, a hydroxy group, a C1-4 alkoxy group or a substituted or unsubstituted amino group; m represents an integer of 0-5; M represents a hydrogen atom or ion, a metal ion or an ammonium ion; n represent 1 or 2; k represents 0 or 1; and a hydrogen atom of ring a or ring b may be substituted by a substituent R1 or a substituent SO3M.)

Inventors:
MORITA RYOUTAROU (JP)
HATTORI YU (JP)
MOCHIZUKI NORIAKI (JP)
Application Number:
PCT/JP2019/049384
Publication Date:
July 02, 2020
Filing Date:
December 17, 2019
Export Citation:
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Assignee:
NIPPON KAYAKU KK (JP)
POLATECHNO CO LTD (JP)
International Classes:
C09B31/20; C09B31/30; G02B5/30
Domestic Patent References:
WO2006132327A12006-12-14
WO2005108502A12005-11-17
Foreign References:
JPH06128498A1994-05-10
JPH05295282A1993-11-09
JP2013249358A2013-12-12
JP2004517189A2004-06-10
JPH0797541A1995-04-11
JP2004285351A2004-10-14
Other References:
SEKAR, N. ET AL.: "Diazo acid dyes with 3-amino-4-methoxy acetanilide and 1- naphthylamine components", COLOURAGE, vol. 52, no. 2, 2005, pages 119 - 132 ,134, XP009070622
Attorney, Agent or Firm:
ASAMURA PATENT OFFICE, P.C. (JP)
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