Title:
TRIS-AZO DYE AND ITS USE TO LIQUID CRYSTAL MATERIAL
Document Type and Number:
Japanese Patent JPS6245664
Kind Code:
A
Abstract:
Trisazo compounds of the formula where Z is X and Y independently of one another are each C1-C24-alkoxy, benzyloxy, phenylethoxy, mono-C1-C24-alkylamino, monobenzylamino, monophenylethylamino, monophenylamino, bis-C1-C24-alkylamino, N-C1-C12-alkyl-N-benzylamino, N-C1-C12-alkyl-N-phenylethylamino or N-C1-C12-alkyl-N-phenylamino, where the benzene rings are unsubstituted or substituted by C1-C12-alkyl, cyclohexyl, 4-C1-C12-alkylcyclohexyl, C1-C24-alkoxy, phenoxy or C1-C24-alkanoyloxy, R1, R2, R3, R4, R5 and R6 independently of one another are each hydrogen, methyl, methoxy, or chlorine and R7 is hydrogen or methyl, and the ring A or B may furthermore carry a fused benzene ring, are very useful as dyes in liquid crystal media, for example for electrooptical displays.
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Inventors:
KAARU HAINTSU ETSUPATSUHA
Application Number:
JP19222786A
Publication Date:
February 27, 1987
Filing Date:
August 19, 1986
Export Citation:
Assignee:
BASF AG
International Classes:
C09B31/16; C09B35/35; C09K19/60; (IPC1-7): C09B31/16; C09K19/60
Attorney, Agent or Firm:
Toshio Yano (2 outside)