EP 0513291 A1 19921119 - PROCESS FOR REDUCING TEXTILE DYESTUFFS.
Title (en)
PROCESS FOR REDUCING TEXTILE DYESTUFFS.
Title (de)
VERFAHREN ZUR REDUKTION VON TEXTILFARBSTOFFEN.
Title (fr)
PROCEDE DE REDUCTION DE COLORANTS TEXTILES.
Publication
Application
Priority
- AT 9100123 W 19911202
- AT 243690 A 19901203
Abstract (en)
[origin: US5443599A] A process comprising the reduction of textile dyestuffs in an aqueous alkaline medium by means of a reducing compound which is a complex of an organic complexing agent and an iron (II)-salt. The iron (II)-salt is present in an amount sufficient to ensure the desired reduction of the dyestuff after a single oxidation.
Abstract (fr)
Selon un procédé de réduction de colorants textiles dans un milieu alcalin aqueux au moyen d'un complexe contenant un sel de fer, on utilise une quantité telle de sel ferreux qu'il suffit de l'oxyder une seule fois pour obtenir la réduction voulue du colorant.
IPC 1-7
IPC 8 full level
D06P 1/22 (2006.01)
CPC (source: EP US)
D06P 1/221 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE
DOCDB simple family (publication)
WO 9209740 A1 19920611; AT E135765 T1 19960415; DE 59107584 D1 19960425; EP 0513291 A1 19921119; EP 0513291 B1 19960320; US 5443599 A 19950822
DOCDB simple family (application)
AT 9100123 W 19911202; AT 91920878 T 19911202; DE 59107584 T 19911202; EP 91920878 A 19911202; US 35868994 A 19941219