Organic compounds -- part of the class 532-570 series – Organic compounds – Azo
Reexamination Certificate
2011-06-14
2011-06-14
Powers, Fiona T (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Azo
Reexamination Certificate
active
07960521
ABSTRACT:
To provide a dye capable of forming an anisotropic dye film showing high dichroism and having a high degree of molecular orientation, a composition containing the dye, an anisotropic dye film using the dye and a polarizing element.A trisazo dye, of which the free acid form is represented by the following formula (1), wherein at least one of B1and D1has at least one substituent as defined by the following Q1, a dye composition for an anisotropic dye film containing the dye, an anisotropic dye film and a polarizing element using the anisotropic dye film:Q1: an alkyl group or alkoxy group substituted by a hydrogen bond-forming group:wherein A1is a phenyl group or a naphthyl group, each of B1and D1is a phenylene group or a naphthylene group, X1is an amino group which may be substituted or a hydroxyl group, and m is 0 or 1.
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Hasegawa Ryuichi
Kadowaki Masami
Sano Hideo
Shimizu Wataru
Mitsubishi Chemical Corporation
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Powers Fiona T
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