Dyeing leather: exhaustion process using combination of pigment

Details Dyeing leather: exhaustion process using combination of pigment Dyeing leather: exhaustion process using combination of pigment

1992-01-29

1993-08-31

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

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

Leather dyeing

8437, 86371, 8642, 8650, 8651, 8652, C07B 6746, D06P 130, D06P 144, D06P 332

Patent

active

052404633

ABSTRACT:
The process for dyeing leather by the exhaust method comprises allowing a pigment dispersion and an aqueous solution of sulfur dye to act on the conventionally pretreated leather in one step or in succession. It affords a high depth of shade and a high brilliance which are not achieved by using the pigment or the sulfur dye on its own.

REFERENCES:
patent: 4341716 (1982-07-01), Diery et al.
patent: 4403077 (1983-09-01), Uhrig et al.
patent: 4717390 (1988-01-01), Dien
patent: 5007941 (1991-04-01), Martinelli et al.

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