Title:
1 22COBALT COMPLEXXDISAZO DYESTUFFS AND PROCESS FOR MANUFACTURE THEREOF AND USE THEREOF FOR DYEING NATURAL AND SYNTHETIC POLYAMIDE FIBERS
Document Type and Number:
Japanese Patent JPS5295741
Kind Code:
A
Abstract:
Valuable 1:2-cobalt complex dyestuffs of the disazo compound of formula (1) (1) had been found, in which R1 is hydrogen, halogen, nitro, lower alkyl or lower alkoxy, R2 is hydrogen, lower alkyl or lower alkoxy, R3 is hydrogen, lower alkyl or lower alkoxy, X is hydroxy or beta -sulfoethyl or a group of the formula wherein R4 is hydrogen or lower alkyl. The novel dyestuffs are well suitable for the dyeing of natural and synthetic polyamide fibres, especially in admixture with hydrophobic fibres, and also especially advantageously with other 1:2-chromium or 1:2 cobalt complex dyestuffs containing one or two sulfonic acid groups per dyestuff molecule, and yield even, strong dyeings of high fastness to wet processing and to use as well as to light. The novel cobalt complex dyestuff can be prepared by cobalting the above disazo compound (1) by means of a cobalt yielding agent.
Inventors:
HERUMAN FUTSUKUSU
KURAUSU FUIRUTSUINGERU
KURAUSU FUIRUTSUINGERU
Application Number:
JP1034177A
Publication Date:
August 11, 1977
Filing Date:
February 03, 1977
Export Citation:
Assignee:
HOECHST AG
International Classes:
C09B62/095; C09B45/30; C09B62/513; C09B62/515; D06P3/24; (IPC1-7): C09B45/30; C09B62/74; D06P1/10; D06P1/384
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