US4976742A
Expired / Lapsed
US
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META-aminophenols useful as oxidation hair dye couplers
Assignee: Henkel AG and Co KGaA
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Filing: 1988-05-06
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Granted: 1990-12-11
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Expires: 2008-05-06
Abstract
Abstract Meto-aminophenols of the formula ##STR1## where R is hydrogen, C 1-4 -alkyl, or a C 2-4 -hydroxyalkyl; and their use as couplers in an oxidative hair dye in combination with developers.
Inventors
- 👤 David Rose
- 👤 Edgar Lieske
- 👤 Norbert Maak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:14
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/415; A61Q; A61Q5/00; A61Q5/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
25 words
A meta-aminophenol compound of the formula: ##STR3## wherein: R is H, a C 1-4 -alkyl, or a C 2-4 -hydroxyalkyl; or a water-soluble salt thereof.
Claim 2
Dependent Claim
25 words
A meta-aminophenol compound of the formula: ##STR3## wherein: R is H, a C 1-4 -alkyl, or a C 2-4 -hydroxyalkyl; or a water-soluble salt thereof.
Claim 3
Dependent Claim
9 words
The compound of claim 1 wherein R is H.
Claim 4
Dependent Claim
11 words
The compound of claim 1 wherein R is C 1 -alkyl.
Claim 5
Dependent Claim
11 words
The compound of claim 1 wherein R is C 2 -alkyl.
Claim 6
Dependent Claim
11 words
The compound of claim 1 wherein R is C 3 -alkyl.
Claim 7
Dependent Claim
11 words
The compound of claim 1 wherein R is C 4 -alkyl.
Claim 8
Dependent Claim
11 words
The compound of claim 1 wherein R is C 2 -hydroxyalkyl.
Claim 9
Dependent Claim
11 words
The compound of claim 1 wherein R is C 3 -hydroxyalkyl.
Claim 10
Dependent Claim
11 words
The compound of claim 1 wherein R is C 4 -hydroxyalkyl.
Claim 11
Dependent Claim
26 words
The compound of claim 1 in the form of a water soluble salt which is at least one hydrochloride, sulfate, phosphate, acetate, propionate, lactate, or citrate.
Claim 12
Dependent Claim
76 words
In an oxidation hair dye comprising as its coloring components at least one coupler and at least one developer selected from the group consisting of p-phenylene diamine, p-tolylene diamine, and mixtures thereof in a mole ratio of 1:0.5-2, the improvement wherein said at least one coupler consists essentially of a meta-aminophenol compound of the formula ##STR4## wherein R is H, a C 1-4 alkyl group, or a C 2-4 hydroxyalkyl group; or a water-soluble salt thereof.
Claim 13
Dependent Claim
76 words
In an oxidation hair dye comprising as its coloring components at least one coupler and at least one developer selected from the group consisting of p-phenylene diamine, p-tolylene diamine, and mixtures thereof in a mole ratio of 1:0.5-2, the improvement wherein said at least one coupler consists essentially of a meta-aminophenol compound of the formula ##STR4## wherein R is H, a C 1-4 alkyl group, or a C 2-4 hydroxyalkyl group; or a water-soluble salt thereof.
Claim 14
Dependent Claim
13 words
The oxidation hair dye of claim 11 wherein said developer is p-phenylene diamine.
Claim 15
Dependent Claim
18 words
The oxidation hair dye of claim 11 wherein said coupler is: 2-methyl-4-chloro-5-aminophenolhydrochloride; 2-methyl-4-chloro-5-ethylaminophenol; 2-methyl-4-chloro-5-(2-hydroxyethyl)-aminophenol; or any mixture thereof.
Claim 16
Dependent Claim
18 words
The oxidation hair dye of claim 12 wherein said coupler is: 2-methyl-4-chloro-5-aminophenolhydrochloride; 2-methyl-4-chloro-5-ethylaminophenol; 2-methyl-4-chloro-5-(2-hydroxyethyl)-aminophenol; or any mixture thereof.
Claim 17
Dependent Claim
35 words
The oxidation hair dye of claim 11 incorporated within a cosmetic carrier, wherein said dye is present in a quantity of 0.2 to 5% by weight, based upon the weight of the total cosmetic-dye composition.
Claim 18
Dependent Claim
28 words
The cosmetic-oxidation hair dye composition of claim 15 wherein said at least one coupler is present in 0.05 to 10 millimols per 100 g of oxidation hair dye.
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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) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |