3-Aminophenol derivatives substituted in the 2-position, and...

Details 3-Aminophenol derivatives substituted in the 2-position, and... 3-Aminophenol derivatives substituted in the 2-position, and...

2006-04-25

2006-04-25

Aulakh, Charanjit S. (Department: 1625)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C546S334000, C544S335000, C549S362000, C549S366000, C549S440000, C549S467000, C564S280000, C564S307000

Reexamination Certificate

active

07033401

ABSTRACT:
The 3-aminophenol derivatives of formula (I), or the physiologically compatible, water-soluble salts thereof:wherein R1 represents a group of formula (II) or a group of formula (III):are useful as couplers in hair colorants. Agents for dyeing keratin fibers, especially hair, based on a developer-coupler combination containing these compounds and methods of dyeing using these agents are described.

REFERENCES:
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patent: 02 02507 (2002-01-01), None
“Protective Groups” In Organic Synthesis, Chapter 3, Wiley Interscience 1991, pp. 143-175.
“Protective Groups” In Organic Synthesis, Chapter 7, Wiley Interscience 1991, pp. 494-652.

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