Document Type and Number:
Japanese Patent JPH046223
Kind Code:
B2
Abstract:
Anthraquinone dyestuffs of the formula (I) in which R1 represents alkyl, aralkyl, -CO-X-alkyl, -CO- X-aralkyl, -CO-X-aryl, -O-alkyl, -O-aralkyl, -O- aryl, -CN, -NO2, -CF3, halogen or a heterocyclic radical and R2 represents H or R1, X representing O, S, NH or a direct bond and Y1, Y2, Y3 and Y4 denoting hydrogen, -NH2, -OH, halogen, -NO2 or an arylmercapto group and at least one of the substituents Y1-Y4 representing an arylmercapto group, it being also possible for the alkyl, aryl, aralkyl and heterocyclic radicals mentioned for R1 and Y1-Y4 to be substituted, the preparation and use thereof, and dichroic material containing these anthraquinone dyestuffs.
Inventors:
MARUTEIN BURUNKU
UBE KURAUSEN
FURIIDORITSUHI BIRUHERUMU KURETSUKU
RYUTOGAA NEEFU
UBE KURAUSEN
FURIIDORITSUHI BIRUHERUMU KURETSUKU
RYUTOGAA NEEFU
Application Number:
JP22461183A
Publication Date:
February 05, 1992
Filing Date:
November 30, 1983
Export Citation:
Assignee:
BAYER AG
International Classes:
C09B1/58; C09K19/00; C09K19/60; D06P1/20; G02F1/13