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2 011 669

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IPC

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Application

5042701/05, 1992-05-19

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Actual filing date

1992-05-19

(45)

Published

1994-04-30

(72)

Inventor

Gorelik M.V.Neugodnikov S.A.Titova S.P.Sadovykh E.G.Arinich A.K.Bolotnikova N.Ju.Kulikova N.M.

(73)

Holder

Moskovskoe Nauchno-Proizvodstvennoe Ob"Edinenie

METHOD OF CATIONIC DYE SALTS PREPARING Russian patent published in 1994 - IPC

Abstract RU 2011669 C1

FIELD: dyes. SUBSTANCE: method involves interaction of cationic dye solution with zinc compound and ammonium thiocyanate or alkaline metal (sodium, potassium) forming complex salt in the process of precipitation. Complex salt is prepared by preliminary dissolution of 2 moles ammonium thiocyanate or alkaline metal (sodium, potassium) and 0.5 mole zinc chloride in water. Ratio of complex salt to the dye is (0.5-0.6): 1 mole. EFFECT: enhanced yield of cationic dye salts, minimal reagent consumption, improved quality of dyes.

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RU 2 011 669 C1

Authors

Gorelik M.V.

Neugodnikov S.A.

Titova S.P.

Sadovykh E.G.

Arinich A.K.

Bolotnikova N.Ju.

Kulikova N.M.

Dates

1994-04-30—Published

1992-05-19—Filed

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