Formazan-based reactive dyes with at least two reactive groups, and aminophenols
AssigneeBASF SE
InventorsClaus Marschner, Manfred Patsch
Life of this patent
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Abstract
There are described formazan dyes of the formula ##STR1## where m and n are each 1 or 2, Kat is the equivalent of a cation, Me is copper or nickel, X is oxygen or a radical of the formula CO-O or SO.sub.2 -O, Y is vinyl or a radical of the formula C.sub.2 H.sub.4 -Q, wherein Q is a group that is detachable under alkaline reaction conditions, E is a fiber-reactive radical, the rings A and B may be substituted and benzofused, and the ring C may be substituted, the use thereof for dyeing or printing hydroxyl- or nitrogen-containing organic substrates, novel aminophenols and a process for preparing same.
Claims1
A process for preparing aminophenols of the formula II ##STR112## where q is 0 or 2,
- Y.sup.1 is vinyl or a radical of the formula CH.sub.2 CH.sub.2 Q', wherein Q.sup.1 is a group that is detachable under alkaline reaction conditions or hydroxyl,
- L.sup.1 is C.sub.2 -C.sub.6 -alkylene, which may be substituted by hydroxyl, chlorine, cyano, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.4 -alkanoyloxy or sulfato and may be interrupted by 1 or 2 oxygen atoms in ether function or by imino or C.sub.1 -C.sub.4 -alkylimino groups,
- U.sup.5 is hydrogen or C.sub.1 -C.sub.6 -alkyl, which may be substituted by hydroxyl, C.sub.1 -C.sub.4 -alkoxy, halogen, cyano, hydroxysulfonyl or a radical of the formula --SO.sub.2 --Y.sup.1, wherein Y.sup.1 is as defined above, or is unsubstituted phenyl or phenyl substituted with C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, nitro, C.sub.1 -C.sub.4 -alkanoyl, C.sub.1 -C.sub.4 -alkanoylamino, benzoylamino or hydroxysulfonyl, and
- P is nitro or amino, which comprises reacting a benzoxazolone of the formula III ##STR113## where P is as defined above, with an amine of the formula IV ##STR114## where q, , U.sup.5, L.sup.1 and Y.sup.1 are each as defined above.
Dependencies are inferred from the claim text.