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IPC

(21) (22)

Application

97110430/04, 1997-06-17

(22)

Actual filing date

1997-06-17

(45)

Published

1999-02-20

(72)

Inventor

Kazymov A.V.Skrjabneva T.N.Valeeva A.M.Abramenko P.I.Voronin E.K.Kazymova M.A.Khakimov M.G.Gil'Fanov M.M.

(73)

Holder

Kazymov Aleksandr Vasil'EvichSkrjabneva Tamara NikitichnaValeeva Al'Fija MansurovnaAbramenko Petr IvanovichVoronin Evgenij KonstantinovichKazymova Marina AleksandrovnaKhakimov Maslakhetdin GalalievichGil'Fanov Mansur Misbakhovich

METHOD OF PREPARING ACIDIC FUCHSIN DYE Russian patent published in 1999 - IPC

Abstract RU 2126431 C1

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

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RU 2 126 431 C1

Authors

Kazymov A.V.

Skrjabneva T.N.

Valeeva A.M.

Abramenko P.I.

Voronin E.K.

Kazymova M.A.

Khakimov M.G.

Gil'Fanov M.M.

Dates

1999-02-20—Published

1997-06-17—Filed