Patent US4396392A successfully refreshed from Google Patents.
US4396392A
Expired / Lapsed
US
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Method for the coloring of hair
Assignee: Procter and Gamble Deutschland GmbH
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Filing: 1979-07-25
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Granted: 1983-08-02
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Expires: 1999-07-25
Abstract
Abstract Agents for the oxidative dyeing of hair, containing as coloring component 6-amino-3-methylphenol, also in the form of its salts or phenolates. The coloring component is contained in these agents in a quantity of about 0.01 to 2.0 percent by weight, alone or in a mixture with the customary developing and coupling substances. In the case of a mixture, the 6-amino-3-methylphenol is preferably used at a molar ratio below normal relative to these developing and coupling substances. The oxidative reaction of the 6-amino-3-methylphenol proceeding with an intensive yellow coloring is generally not influenced by the customary developing and coupling substances that may be present.
Inventors
- 👤 Eugen Konrad
- 👤 Herbert Mager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:04
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: 5
Claim 1
Independent Claim
74 words
A method for dyeing human hair with oxidative dyes which comprises applying to said hair, at temperature of from 15° to 50° C. an effective amount for dyeing, of a mixture of a suitable oxidizing agent and an aqueous composition containing from 0.01 to 2.0% by weight of 6-amino-3-methyl-phenol, allowing said mixture to remain in contact with said hair for a period of time to effectively dye said hair, and thereafter rinsing said hair.
Claim 2
Independent Claim
74 words
A method for dyeing human hair with oxidative dyes which comprises applying to said hair, at temperature of from 15° to 50° C. an effective amount for dyeing, of a mixture of a suitable oxidizing agent and an aqueous composition containing from 0.01 to 2.0% by weight of 6-amino-3-methyl-phenol, allowing said mixture to remain in contact with said hair for a period of time to effectively dye said hair, and thereafter rinsing said hair.
Claim 3
Dependent Claim
31 words
A method according to claim 1, wherein the mixture is allowed to remain in contact with the hair for a period of time in the range of 15 to 50 minutes.
Claim 4
Dependent Claim
32 words
A method according to claim 1, wherein the aqueous composition additionally comprises at least one of 1,4-diamino-benzene, 2,5-diamino-toluene, p-amino-phenol, α-naphthol, 3,4-diamino-benzoicacid, resorcinol, 4-chloro-resorcinol, m-aminophenol, m-phenylene diamine, m-toluylenediamine, 2,4-diamino anisole, 2,4-diamino-benzylalcohol or 3-amino-6-methyl-phenol.
Claim 5
Dependent Claim
67 words
A method according to claim 1, wherein the aqueous composition additionally comprises at least one of Diamond Fuchsin (C.I. 42 510), Leather Ruby HF (C.I. 42 520), 2-nitro-1,4-diaminobenzene, Acid Brown (C.I. 14 805), Acid Blue 135 (C.I. 13 385), Disperse Violet 4 (C.I. 61 105), Disperse Blue 1 (C.I. 64 500), Disperse Red 15 (C.I. 60 710), Disperse Violet 1 (C.I. 61 100), 1,4,5,8-tetraamino-anthraquinone or 1,4-diamino anthraquinone.
References Cited (Backward Citations)
DE2501862A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |