Dyeing of grain leather

Details Dyeing of grain leather Dyeing of grain leather

1979-12-12

1981-06-09

Schofer, Joseph L.

Bleaching and dyeing; fluid treatment and chemical modification

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

Leather dyeing

8437, D06P 500, D06P 502

Patent

active

042722438

ABSTRACT:
A process for dyeing grain leather with anionic dyes under the conventional conditions for exhaustion methods, in the presence of two specific surfactants. The combined use of the two surfactants results, in the case of cationically tanned (essentially mineral-tanned) leather, in an improvement in the levelness and dye penetration and in the case of anionically tanned (synthetics-tanned or vegetable-tanned) or retanned leather, in an increase in depth of the color.
The two surfactants are

REFERENCES:
patent: 2228369 (1941-01-01), Schoeller
patent: 2763528 (1956-09-01), Meyer et al.
patent: 2872277 (1959-02-01), Kirk
patent: 2893811 (1959-07-01), Kirk
patent: 3334960 (1967-08-01), Abel
patent: 3972675 (1976-08-01), Schwank

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