Back to results
US 4,659,806 AGranted
Disazo copper complex reactive dyestuffs
AssigneeBayer Aktiengesellschaft
InventorHorst Jager
Life of this patent
Estimating the term…
Abstract
Copper complexes of disazo dyestuffs of the formula ##STR1## wherein R, Z, K and A have the meaning given in the description, and their use for dyeing and printing materials containing hydroxyl groups or amide groups, such as textile fibres, filaments and fabrics of wool, silk or synthetic polyamide or polyurethane fibres, and for dyeing and printing natural or regenerated cellulose in shades which are fast to washing.
Claims4
Copper complexes of disazo dyestuffs, of the formula ##STR10## wherein R denote H or C.sub.1 -C.sub.4 -alkyl,
- Z denotes a mono-, di- or tri-halogenopyrimidinyl radical or a mono- or di-halogenotriazinyl radical,
- K denotes the radical of a 1-hydroxy- or 2-hydroxy-naphthalenesulfphonic acid and the benzene or naphthalene nucleus A can contain further substituents, in particular chlorine atoms or C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or sulpho groups.
Dependencies are inferred from the claim text.