M-aminophenol derivatives and coloring agents containing them

Details M-aminophenol derivatives and coloring agents containing them M-aminophenol derivatives and coloring agents containing them

2006-10-31

2006-10-31

Elhilo, Eisa (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

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

Hair dyeing

C008S409000, C008S411000, C008S412000, C548S400000, C549S415000, C549S476000, C549S478000, C549S479000, C549S480000, C549S497000

Reexamination Certificate

active

07128764

ABSTRACT:
The object of the present patent application are 3-aminophenol derivatives of formula (I) or the physiologically tolerated, water-soluble salts thereofwherein R denotes a heterocyclic aromatic 5-membered ring of formula (Ia)and colorants based on a developer-coupler combination and containing these compounds.

REFERENCES:
patent: 5019130 (1991-05-01), Flood
patent: 6592631 (2003-07-01), Chassot et al.
patent: 6840965 (2005-01-01), Chassot et al.
patent: 21 18 494 (1972-10-01), None
patent: 0 963 982 (1999-12-01), None
patent: 01 85683 (2001-11-01), None
Chapter “Protective Groups”, Protection for Phenols and Catechols, in Organic Synthesis, Chapter 3, Wiley Interscience, 1991, pp. 142-174. (in English).
Chapter “Protective Groups”, Protection for Amino Groups, in Organic Synthesis, Chapter 7, Wiley Interscience, 1991, pp. 494-653. (in English).
“Ueber Die Eigenschaften . . . ” by W. Voegtli et al., vol. XXXIII, Fasciculus V 1950, No. 168, pp. 1297-1303 (with Certified English Translation).

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