To provide a guest-host type liquid crystal composition having a high dichroic ratio over a wavelength range of 400-650 nm, and to provide a dichroic dye composition used therefor.
The dichroic dye composition contains at least one kind of a dichroic dye from each group, shown by (I)-(IV) groups: (I) a dichroic azo dye is a monoazo dye formed by connecting two benzene rings by an azo group, and having an amino group; (II) a dichroic azo dye is a disazo dye formed by connecting a benzene ring to a naphthalene ring by an azo group, and having an amino group in the benzene ring; (III) a dichroic azo dye is a disazo dye formed by connecting a benzene ring to a naphthalene ring by an azo group, and having an amino group in the benzene ring; and (IV) a dichroic azo dye is a trisazo dye formed by connecting one benzene ring to three naphthalene rings by an azo group, and having a structure in which naphthalene rings on both terminals have each an amino group.
| JP2008020908 | PIGMENT FOR ANISOTROPIC PIGMENT FILM |
| JPH0551536 | AZO COLORING MATTER CONTAINING PERFLUOROALKYL GROUP |
| JP2000080319 | INFRARED REFLECTING COLORANT |
TANAKA YUKI
ISHIDA YOSHIORI
SASAKI TOMOKO
| JP2009007486A | 2009-01-15 | |||
| JP2009007485A | 2009-01-15 | |||
| JP2008179670A | 2008-08-07 | |||
| JP2000313881A | 2000-11-14 | |||
| JP2000010085A | 2000-01-14 | |||
| JP2003096453A | 2003-04-03 | |||
| JP2003096462A | 2003-04-03 |
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