Method for dyeing of natural leathers using reactive dyes

Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Leather dyeing

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8437, 8547, 8673, 8688, D06P 332, D06P 138

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active

046344489

ABSTRACT:
Disclosed herein is a method for dyeing of natural leathers by using a reactive dyestuff having at least one S-triazinyl group to which a substituent group having a quaternary nitrogen atom is bonded via the quaternary nitrogen atom without using any acid-binder, any substance releasing the acid-binder or any inorganic electrolyte, thereby obtaining the dyed natural leathers excellent in light fastness, alkaline-sweat and wet fastness.

REFERENCES:
patent: 3211513 (1965-10-01), Ulrich et al.
patent: 3347617 (1967-10-01), Ulrich et al.
patent: 3519614 (1970-07-01), Ponzini
patent: 3556708 (1971-01-01), Randall
patent: 4453945 (1984-06-01), Miyamoto et al.
E. Siegel in Venkataraman's, "The Chemistry of Synthetic Dyes", vol. VI, (Academic Press), 1972, pp. 149-152.
J. F. Feeman in Venkataraman's, "The Chemistry of Synthetic Dyes", vol. VIII, (Academic Press), 1978, pp. 74-77.

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