Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Patent
1978-03-13
1980-07-15
Morgenstern, Norman
Bleaching and dyeing; fluid treatment and chemical modification
Dyeing involving animal-derived natural fiber material ,...
Hair dyeing
A61K 713
Patent
active
042126452
ABSTRACT:
A composition for use in the dyeing of keratinous fibre such as hair includes an aqueous anaerobic solution of an aryldiamine and a substituted catechol. Optionally, an aromatic coupling agent can also be incorporated in the composition to modify the shade of color produced. Anaerobic storage conditions can, for example, be maintained by packing the composition in an aerosol container with a halocarbon propellant.
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Leon Nicholas H.
Ricketts Guy A. G.
Clarke Vera C.
Farrell James J.
Kelly Michael J.
Kurtz Melvin H.
Lever Brothers Company
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