Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1990-06-19
1991-05-14
Hollrah, Glennon H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
564412, 564442, 8411, C07C21580
Patent
active
050157728
ABSTRACT:
The invention relates to the compounds of the formula: ##STR1## in which R.sub.1 and R.sub.2 denote, independently of one another, a hydrogen atom, a C.sub.1 -C.sub.4 alkyl radical or a C.sub.2 -C.sub.3 mono- or polyhydroxyalkyl radical,
Z and Z' denote, independently of one another, a C.sub.1 -C.sub.4 alkyl or C.sub.2 -C.sub.4 hydroxyalkyl radical, with the proviso that, when R.sub.1 and R.sub.2 simultaneously denote a hydrogen atom, Z and Z' do not simultaneously denote a methyl radical, and to their addition salts with an acid, to a process for preparation thereof and also to their use, by way of couplers, in an aqueous vehicle, in combination with at least one oxidation dye percursor of the para type, for the dyeing of human hair.
The invention also relates to the intermediate compounds of the formula: ##STR2## in which R' denotes a hydrogen atom, a C.sub.1 -C.sub.4 alkyl radical, a C.sub.2 or C.sub.3 mono- or polyhydroxyalkyl radical, or an acetyl or .beta.-chloethoxycarbonyl radical, and z and z' denote, independently of one another, a C.sub.1 -C.sub.4 alkyl radical.
REFERENCES:
patent: 4566876 (1986-01-01), Brown et al.
patent: 4766244 (1988-08-01), Lysenko
Grollier, J. et al., "Hair Dyes Containing Rapid Oxidation Dyes, etc.", CA, 111, 120609n (1989).
Weinberger, L. et al., "Syntheses of Dimethoxybenzimidazoles, etc.", J. Org. Chem., vol. 24, p. 1451 (10/1959).
Borowiak Herve
Junino Alex
Lang Gerard
Vandenbossche Jean J.
"L'Oreal"
Hollrah Glennon H.
Treanor Susan P.
LandOfFree
Meta-phenylenediamines, process for preparation thereof, interme does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Meta-phenylenediamines, process for preparation thereof, interme, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Meta-phenylenediamines, process for preparation thereof, interme will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1649578