摘要 |
Novel quinophthalone compounds, which are represented by the following formula (1): <IMAGE> (1) hydrogen or halogen atom or a hydroxy, linear or branched alkyl, substituted or unsubstituted cycloalkyl, halogenated alkyl, alkoxyalkyl, alkoxy, nitro, amino, alkylamino, carboxyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, alkylcarbonylamino, alkylcarbonyloxy or cyano group; R6-R17 each independently represents a hydrogen or halogen atom or a hydroxyl, alkyl, halogenated alkyl, alkoxy, nitro, amino, alkylamino, carboxyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, alkylcarbonyloxy or cyano group; m and n each stands for 0 or 1; and A represents a substituent, are yellow orange dyestuffs suitable for polarizing films. Polarizing films containing at least one of the compounds in a hydrophobic resin are excellent in polarizing performance, heat-resistant dimensional stability, moist heat resistance and the like and are extremely useful for liquid crystal display devices.
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申请人 |
MITSUI TOATSU CHEMICALS, INC. |
发明人 |
OGISO, AKIRA;IMAI, RIHOKO;MISAWA, TSUTAMI;OI, RYU;MATSUZAKI, YORIAKI;ITOH, HISATO |