Metal complex reactive dyestuffs
AssigneeBayer Aktiengesellschaft
InventorsWalter Scholl, Horst Nickel
Life of this patent
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Abstract
1:1 and 1:2 metal complex reactive dyestuffs based on at least one metallizable dyestuff of the formula ##STR1## wherein D=the radical of a metallizable diazo component with an OH group or COOH group in the o-position relative to the azo bridge, K=the radical of a coupling component which couples in the o-position relative to a phenolic or enolic OH group, W= ##STR2## R, R.sub.1 and R.sub.2 =H or a substituent Y=a group which can be split off, in particular halogen and Z=a divalent organic radical, and wherein the group ##STR3## is bonded, directly or via a bridge member, to an aromatic ring C atom of D or K, and their use for dyeing and printing materials containing hydroxyl groups and N-containing materials, such as cotton, wool and the like.
Claims12
1:1 and 1:2 metal complex reactive dyestuffs based on at least one metallisable dyestuff of the formula ##STR95## wherein D=the radical of a metallisable diazo component with an OH group or COOH group in the o-position relative to the azo bridge,
- K=the radical of a coupling component which couples in the o-position relative to a phenolic or enolic OH group, ##STR96## R, R.sub.1 and R.sub.2 =H or a substituent Y=halogen and
- Z=phenylene, naphthylene and C.sub.1 -C.sub.3 -alkylene which are unsubstituted or substituted by sulfo, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen,
- and wherein
- the group ##STR97## is bonded, directly or via a bridge member, to an aromatic ring C atom of D or K.
Dependencies are inferred from the claim text.