US4601726A
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Dye composition for the direct dyeing of keratinic fibres, containing at least one N-substituted cosolubilized 2-nitroparaphenylenediamine and corresponding processes for dyeing keratinic fibres
Assignee: L'Oréal SA
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Filing: 1984-11-21
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Granted: 1986-07-22
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Expires: 2004-11-21
Abstract
Abstract The invention provides a composition and process for directly dyeing keratinic fibres. The combination of 1-N-methylamino-2-nitro-4-N'-methyl-N'-(2' ,3'-dihydroxypropyl)amino benzene with certain 2-nitroparaphenylenediamine direct nitro dyes produces a dye composition in which the dyes can be more concentrated (without crystallizing out) and hence produce darker shades.
Inventors
- 👤 Jean-Francois Grollier
- 👤 Jean Cotteret
- 👤 Andree Bugaut
- 👤 Alain Genet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:34
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/418; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; C; C09; C09B; C09B51/00; C09B67/00; C09B67/0033
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
121 words
A dye composition for use in the direct dyeing of keratinic fibers comprising, in a suitable vehicle, (a) a keratinic fiber-dyeing amount of at least one direct nitro dye of the formula ##STR8## wherein R 1 is hydrogen, alkyl having 1-4 carbon atoms or monohydroxy alkyl wherein the alkyl moiety has 2-4 carbon atoms, R 2 is monohydroxy alkyl wherein the alkyl moiety has 2-4 carbon atoms, R 3 is alkyl having 1-4 carbon atoms or monohydroxy alkyl wherein the alkyl moiety has 2-4 carbon atoms, or a salt thereof, and (b) an amount effective to increase the solubility of said direct nitro dye of (a), above, in said vehicle, of a compound of the formula ##STR9## or a salt thereof.
Claim 2
Dependent Claim
121 words
A dye composition for use in the direct dyeing of keratinic fibers comprising, in a suitable vehicle, (a) a keratinic fiber-dyeing amount of at least one direct nitro dye of the formula ##STR8## wherein R 1 is hydrogen, alkyl having 1-4 carbon atoms or monohydroxy alkyl wherein the alkyl moiety has 2-4 carbon atoms, R 2 is monohydroxy alkyl wherein the alkyl moiety has 2-4 carbon atoms, R 3 is alkyl having 1-4 carbon atoms or monohydroxy alkyl wherein the alkyl moiety has 2-4 carbon atoms, or a salt thereof, and (b) an amount effective to increase the solubility of said direct nitro dye of (a), above, in said vehicle, of a compound of the formula ##STR9## or a salt thereof.
Claim 3
Dependent Claim
27 words
A composition according to claim 1, wherein in formula (I) R 1 is a methyl group, and R 2 and R 3 are each a β-hydroxyethyl group.
Claim 4
Dependent Claim
27 words
A composition according to claim 1, wherein in formula (I) R 1 and R 3 are each a methyl group, and R 2 is a β-hydroxyethyl group.
Claim 5
Dependent Claim
23 words
A composition according to claim 1, wherein in formula (I) R 1 , R 2 and R 3 are each a β-hydroxyethyl group.
Claim 6
Dependent Claim
27 words
A composition according to claim 1, wherein in formula (I) R 1 and R 2 are each a β-hydroxyethyl group, and R 3 is a methyl group.
Claim 7
Dependent Claim
43 words
A composition according to claim 1, in which the compound of formula (I) or salt thereof, is present in the composition at a concentration of from 0.05% to 5% by weight, expressed as free base, relative to the total weight of the composition.
Claim 8
Dependent Claim
31 words
A composition according to claim 6, in which the compound of formula (I) or salt thereof, is present in the composition at a concentration of from 0.1 to 3% by weight.
Claim 9
Dependent Claim
43 words
A composition according to claim 1, in which the compound of formula (II) or salt thereof, is present in the composition at a concentration of from 0.1% to 5% by weight, expressed as free base, relative to the total weight of the composition.
Claim 10
Dependent Claim
28 words
A composition according to claim 8, in which the compound for formula (II) is present in the composition at a concentration of from 0.3% to 3% by weight.
Claim 11
Dependent Claim
22 words
A composition according to claim 1, which contains at least one direct nitro dye other than those of formulae (I) and (II).
Claim 12
Dependent Claim
14 words
A composition according to claim 1, which contains at least one direct non-nitro dye.
Claim 13
Dependent Claim
20 words
A composition according to claim 11, in which the non-nitro dye is an azo dye, naphthoquinone dye or anthraquinone dye.
Claim 14
Dependent Claim
40 words
The composition of claim 1 wherein said vehicle is water, an organic solvent or a mixture thereof, said organic solvent being present in an amount of from 0.5 to 20% by weight relative to the total weight of said composition.
Claim 15
Dependent Claim
28 words
A composition according to claim 1, which contains from 0.1 to 50% by weight, relative to the total weight of the composition, of at least one surface-active agent.
Claim 16
Dependent Claim
32 words
A composition according to claim 1, which contains at least one thickening agent present in a concentration of from 0.5 to 5% by weight relative to the total weight of the composition.
Claim 17
Dependent Claim
33 words
A composition according to claim 1, which additionally contains as adjuvant, one or more antioxidant, alkalizing or acidifying agent, perfume, sequestering agent, film-forming agent, processing agent, dispersant, hair conditioner, preserving agent, or opacifier.
Claim 18
Dependent Claim
15 words
A composition according to claim 1, which has a pH of from 4 to 10.5.
Claim 19
Dependent Claim
15 words
A composition according to claim 17, in which the pH is from 6 to 10.
Claim 20
Dependent Claim
21 words
A composition according to claim 1, which is in the form of a thickened or gelled liquid, cream, or aerosol foam.
Claim 21
Dependent Claim
45 words
A process for dyeing keratinic fibres, in which a composition according to claim 1 is allowed to act on dry or moist keratinic fibres for from 3 to 60 minutes, and then the keratinic fibres are rinsed, washed and rinsed again if appropriate, and dried.
Claim 22
Dependent Claim
25 words
A process for dyeing keratinic fibres, in which a composition according to claim 1 is applied to keratinic fibres, followed by drying without intermediate rinsing.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
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