Vat dyes obtainable by bromination of dibenzanthrone and reactio

Details Vat dyes obtainable by bromination of dibenzanthrone and reactio Vat dyes obtainable by bromination of dibenzanthrone and reactio

1983-02-17

1985-10-15

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

8650, 260356, 260694, 548417, C07D22118, C07D22122

Patent

active

045475750

ABSTRACT:
Vat dyes which dye cellulosic material in a grey or black shade of good fastness properties are obtained by brominating dibenzanthrone in 80-100% sulfuric acid to a bromine content of 24 to 32%, and reacting the bromination product with 1-aminoanthraquinone.

REFERENCES:
patent: 2232700 (1941-02-01), Fleysher
patent: 2456589 (1948-12-01), Lytle
patent: 3008962 (1961-11-01), Jorre
patent: 3917640 (1975-11-01), Fitzpatrick et al.
patent: 4405785 (1983-09-01), Fitzpatrick et al.

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