Dyeing keratinous fibers

Details Dyeing keratinous fibers Dyeing keratinous fibers

1973-06-05

1976-06-29

Padgett, Benjamin R.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 1A, 8 101, 8 37, 8 41B, 8 41R, 8 44, 8 49, 8 54, 8 82, 8 89R, 812751, 260160, 260163, 260185, 260191, 260198, 260199, 260200, 424 70, 424 72, 424226, D06P 138, D06P 310, A61K 713

Patent

active

039663973

ABSTRACT:
A process for dyeing keratinous fibers such as hair which comprises reacting the hair with a dyestuff of the general formula ##EQU1## where X is a chromophoric group, such as a group formed by coupling a phenylene diazonium salt with a diazo coupling compound, and where R has the formula --R'COOH, --R'COOCH.sub.3, --CH.sub.2 CH.sub.2 OH or --CH.sub.3 in which R' is an alkylene group containing 1,2 or 3 carbon atoms. The process gives good coloring of hair without damaging the condition.
The invention also relates to novel dyes for use in the process and to processes for their production, and to dyeing compositions containing the dyes.

REFERENCES:
patent: 3096141 (1963-07-01), Bennett et al.
patent: 3396736 (1968-08-01), Shansky
patent: 3415606 (1968-12-01), Randebrock
patent: 3567355 (1971-03-01), Boosen et al.
"On Carboxymethyl Dithiophenylacetate and its Reactions with Amines, Amino Acids and Peptides", A. Kjaer, Acta Chem. Scand., vol. 6, pp. 327-332 (1952).
"Keratin Substantivity", R. L. Goldemberg, Drug and Cosmetic Industry, vol. 85, No. 5, pp. 618-619, 694-696 (1959).

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