Process for dyeing leather with dye mixtures

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

1993-02-26

1994-12-27

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Leather dyeing

8436, 8641, 8602, D06P 332

Patent

active

053761472

ABSTRACT:
Dye mixtures comprising at least two metal-free dyes of different colors having in each case two sulfo or carboxyl groups and a molecular weight of between 790 and 1100 are used for dyeing leather. A trichromatic dye mixture comprising at least one yellow dye of the formula (1), at least one red dye of the formula (2) and at least one blue dye of the formula (3) according to claim 2 is preferably used. Leather can be dyed in brilliant shades using these dye mixtures.

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Chem. Abst. 93-028607/04 of EP 524,520; Jan. 27, 1993.
Chem. Abst. 68-95928p/00 of DD 1,794,288; Nov. 18, 1971.
Chem. Abst. Dyes and Textile Chem. (1936) 293.
Dyes and Textile Chem. 294 Abstract of CH 174,541; Apr. 1, 1935.
Colour Index, 3rd Edition, vol. 4 p. 4233; 1971.

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