Hair dyeing with persulfate oxidants and catechols

Details Hair dyeing with persulfate oxidants and catechols Hair dyeing with persulfate oxidants and catechols

1995-06-07

1997-02-18

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

8406, 8407, 8408, 8623, 8624, A61K 713

Patent

active

056037341

ABSTRACT:
A process of dyeing hair by preparing and applying to the hair an aqueous reaction medium buffered to a pH of from 7 to 11 with a bicarbonate or a TRIS buffer, a catalytic quantity of a cupric or ferrous salt, a catechol and a persulfate oxidizing agent and removing the composition after the desired color is attained, and compositions and kits for practicing such process. The composition may be formed by simultaneous addition of the catechol and the oxidant to the hair or by addition of the catechol followed by addition of the oxidant.

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patent: 4021538 (1977-05-01), Yu et al.
patent: 4390341 (1983-06-01), Jacobs
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patent: 4776857 (1988-10-01), Carroll et al.
patent: 4904274 (1990-02-01), Schultz et al.
patent: 5273550 (1993-12-01), Prota et al.
patent: 5279617 (1994-01-01), Prota et al.
patent: 5279618 (1994-01-01), Prota et al.

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