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2 076 103

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C1

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IPC

(21) (22)

Application

94042782/04, 1994-12-05

(22)

Actual filing date

1994-12-05

(45)

Published

1997-03-27

(72)

Inventor

Levdanskij V.A.Polezhaeva N.I.Kuznetsov B.N.

(73)

Holder

Institut Khimii Prirodnogo Organicheskogo Syr'Ja So Ran

METHOD FOR PRODUCTION OF DERIVATIVES OF 7-HYDROXY-5,6-PHTHALYL PHENOXAZINE Russian patent published in 1997 - IPC

Abstract RU 2076103 C1

FIELD: dyeing of various fibers. SUBSTANCE: method is carried out by boiling of derivatives of 7-hydroxy-2-phenyloxy-4-hydroxyanthraquinone within 2-3 h in acetic anhydride. EFFECT: simplifies the method.

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RU 2 076 103 C1

Authors

Levdanskij V.A.

Polezhaeva N.I.

Kuznetsov B.N.

Dates

1997-03-27—Published

1994-12-05—Filed

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