Organic compounds -- part of the class 532-570 series – Organic compounds – Polycyclo ring system containing anthracene configured ring...
Patent
1996-10-16
1998-10-06
Wu, Shean C.
Organic compounds -- part of the class 532-570 series
Organic compounds
Polycyclo ring system containing anthracene configured ring...
552236, 552237, 552244, 552249, 106 3127, 347100, 428 644, 430 32, C07D30794, C09D 1100, G03G 1700
Patent
active
058178430
ABSTRACT:
This invention is to provide a novel quinizarin compound which has a quinizarin structure represented by a following formula (1) having one to four of the 5, 6, 7, and 8 positions and at least either the 6 or 7 position formed of at least one member selected from the class consisting of secondary amino groups, alkylthio groups, and optionally substituted phenylthio groups, and having the remaining positions thereof formed of at least one member selected from the class consisting of hydrogen atom, halogen atoms, amino group, hydroxy group, alkoxy groups, and optionally substituted phenoxy groups, a method for the production thereof, and a dye, an electrophotographic grade color toner composition, a thermal-transfer recording sheet, an optical recording medium, an ink jet grade ink composition and a color filter severally comprising the quinizarin compound. ##STR1##
REFERENCES:
patent: 3992421 (1976-11-01), Botros
patent: 5608091 (1997-03-01), Masuda et al.
Kaieda Osamu
Masuda Kiyoshi
Tamaura Yukie
Behr Esq. Omri M.
Nippon Shokubai Co. , Ltd.
Wu Shean C.
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