Process for the dyeing of leather with dye mixtures

Details Process for the dyeing of leather with dye mixtures Process for the dyeing of leather with dye mixtures

1993-06-22

1996-01-23

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Leather dyeing

8436, 8641, 8687, 8688, D06P 106

Patent

active

054862132

ABSTRACT:
Dye mixtures comprising at least two metal-free dyes, one of which contains two to eight sulfo groups and the other three to eight sulfo groups, the mixture comprising at most one dye having two sulfo groups, are used for the dyeing of leather. Preferably, a trichromatic dye mixture comprising at least one yellow dye, at least one red dye and at least one blue dye is used. Leather can be dyed with these dye mixtures in brilliant shades.

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patent: 3819690 (1974-06-01), Bruenisholz et al.
patent: 4318859 (1982-03-01), Hermann
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patent: 5032142 (1991-07-01), Egger et al.
patent: 5152801 (1992-10-01), Altermatt et al.
patent: 5176717 (1993-01-01), Schaulin et al.
Dyes and Textile Chem. (1936) 294 Abst. Af CH 174, 541 Date Not Available.
Chem. Abst. 102:8244C (Sep. 1984).

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