Trisazo dyestuffs containing a naphtholamino sulfonic acid component and a phenylcarbonylamino-phenyl component
AssigneeBayer Aktiengesellschaft
InventorsVolker Huhne, Carl Taube, Reiner Ditzer
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Abstract
Trisazo dyestuffs of the formula ##STR1## wherein A, B, n, C and D have the meaning given in the description. The new dyestuffs are outstandingly suitable for dyeing natural or synthetic fibre materials containing hydroxyl groups or containing nitrogen, for example cellulose fibres in all states of processing, especially cotton and regenerated cellulose, and also wool, wool/cellulose union, silk, nylon, leather and paper. Dyeings obtained show good fastness properties, especially good fastness to water and to perspiration following an after treatment with cationic auxiliaries.
Claims4
Triasazo dyestuff of the formula ##STR11## wherein A' is phenyl, chlorophenyl, nitrophenyl or sulphophenyl,
- B' is 4-hydroxy-phenyl, 2,4-diaminophenyl, 2,4-diamino-5-methyl-phenyl, 2,4-diamino-5-nitrophenyl, 1-amino-3-hydroxy-phenyl, 2-hydroxy-(2'-methylphenylamino)-phenyl or 2-acylamino-4-dialkylaminophenyl.
Dependencies are inferred from the claim text.