METHOD OF PREPARING ACIDIC FUCHSIN DYE

FIELD: paint-and-varnish industry. SUBSTANCE: dye is prepared by oxidizing leucoparafuchsin, i.e. 4,4',4"-triaminotriphenylmethane with manganese(IV) oxide in methanol in presence of acetic acid and sodium chloride after which resulting parafuchsin is sulfonated with oleum. EFFECT: increas...

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Main Authors VALEEVA A.M, KAZYMOV A.V, KHAKIMOV M.G, VORONIN E.K, KAZYMOVA M.A, SKRJABNEVA T.N, ABRAMENKO P.I, GIL'FANOV M.M
Format Patent
LanguageEnglish
Published 20.02.1999
Edition6
Subjects
ADHESIVES
CHEMISTRY
DYES
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
POLISHES
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Summary:FIELD: paint-and-varnish industry. SUBSTANCE: dye is prepared by oxidizing leucoparafuchsin, i.e. 4,4',4"-triaminotriphenylmethane with manganese(IV) oxide in methanol in presence of acetic acid and sodium chloride after which resulting parafuchsin is sulfonated with oleum. EFFECT: increased yield of product (to 70-75%). 2 cl, 12 ex
Bibliography:Application Number: RU19970110430