Acetoacetamide diazo dyestuffs
AssigneeCiba-Geigy Corporation
InventorsRudolf Hurter, Alfred Fasciati
Life of this patent
Estimating the term…
Abstract
Novel compounds which have the formula I ##STR1## in which D is the residue of a diazo component, K is the residue of a coupling component, A is an unsubstituted or substituted 1,3- or 1,4-phenylene radical or an unsubstituted or substituted 1,4-naphthylene radical, X is an oxygen atom or sulphur atom, R is a group conferring solubility in water and n and m are each the numbers 0 or 1, with the proviso that if A is a 1,3-phenylene radical the symbol X is bonded in the p-position relative to the amino group or azo grouping of the ring B.
Claims13
A compound of the formula ##STR47## wherein D is a residue of a diazo component,
- K is a residue of a coupling component,
- A is 1,3-phenylene, 1,4-phenylene, chloro-1,4-phenylene, or 1,4-naphthylene,
- X is an oxygen atom or a sulfur atom,
- R is an acidic water solubilizing group, provided that when A is 1,3-phenylene, X is para to the azo group of ring B.
A disazo dye of the formula ##STR51## in which D is a phenyl radical which is monosubstituted or polysubstituted by SO.sub.2 NH.sub.2, NO.sub.2, SO.sub.3 H, Cl, CH.sub.3, OCH.sub.3, COOCH.sub.3, SO.sub.2 C.sub.6 H.sub.5, OH, SO.sub.2 NHCH.sub.2 CH.sub.2 NH.sub.2, SO.sub.2 NHCH.sub.2 CH.sub.2 NHCOCHBrCH.sub.2 Br, NHCOCHBrCH.sub.2 Br or ##STR52## A is an unsubstituted 1,3-phenylene or 1,4-naphthylene radical, or a 1,4-phenylene radical which is unsubstituted or substituted by chlorine, and K is the radical ##STR53##
Dependencies are inferred from the claim text.