Dye composition for the direct dyeing of keratinic fibres, conta

Details Dye composition for the direct dyeing of keratinic fibres, conta Dye composition for the direct dyeing of keratinic fibres, conta

1984-11-21

1986-07-22

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8414, 8415, A61K 713, C09B 6722, D06P 119

Patent

active

046017267

ABSTRACT:
The invention provides a composition and process for directly dyeing keratinic fibres. The combination of 1-N-methylamino-2-nitro-4-N'-methyl-N'-(2' ,3'-dihydroxypropyl)amino benzene with certain 2-nitroparaphenylenediamine direct nitro dyes produces a dye composition in which the dyes can be more concentrated (without crystallizing out) and hence produce darker shades.

REFERENCES:
patent: 3168442 (1965-02-01), Brunner et al.
J. F. Corbett in Venkataraman's "The Chemistry of Synthetic Dyes", vol. V, (Academic Press, 1971), pp. 507-514.

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