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US4046503A
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Developer-coupler hair dyes based on alkoxy-triamino-pyrimidines
Assignee: Henkel AG and Co KGaA
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Filing: 1976-04-05
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Granted: 1977-09-06
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Expires: 1996-04-05
Abstract
Abstract Water-soluble substituted and unsubstituted triamino C 1-4 -alkoxy pyrimidines are effective dyes for hair when oxidized in conjunction with a coupling agent. The oxidation can be performed at alkaline pH at room temperature, with air, and provides long-lasting and light-fast dyeings over a broad color range.
Inventors
- 👤 Hans Peter Kubersky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:01
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/10; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/4953
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
131 words
A composition of the developer-oxidizer type for the dyeing of hair, consisting essentially of, as developer, a water-soluble triamino C 1-4 alkoxy pryrimidine of the formula: ##STR3## wherein R 1 represents C 1-4 alkyl; R 2 , R 3 , R 4 and R 5 each represent the same or different substituents selected from the group consisting of hydrogen, C 1-4 alkyl, C 1-4 hydroxyalkyl, phenyl, C 1-4 alkylphenyl, phenyl-C 1-4 alkyl, and C 1-4 alkoxyphenyl, and wherein R 2 and R 3 or R 4 and R 5 together form a divalent linking member selected from the group consisting of butylene, pentylene, azabutylene, and oxabutylene, or the water-soluble salts thereof, and a water-soluble coupler therefor, said developer and said coupler being present in the molar range of 2:1 to 1:2.
Claim 2
Dependent Claim
131 words
A composition of the developer-oxidizer type for the dyeing of hair, consisting essentially of, as developer, a water-soluble triamino C 1-4 alkoxy pryrimidine of the formula: ##STR3## wherein R 1 represents C 1-4 alkyl; R 2 , R 3 , R 4 and R 5 each represent the same or different substituents selected from the group consisting of hydrogen, C 1-4 alkyl, C 1-4 hydroxyalkyl, phenyl, C 1-4 alkylphenyl, phenyl-C 1-4 alkyl, and C 1-4 alkoxyphenyl, and wherein R 2 and R 3 or R 4 and R 5 together form a divalent linking member selected from the group consisting of butylene, pentylene, azabutylene, and oxabutylene, or the water-soluble salts thereof, and a water-soluble coupler therefor, said developer and said coupler being present in the molar range of 2:1 to 1:2.
Claim 3
Dependent Claim
24 words
An aqueous emulsion for the dyeing of hair having a content of 0.2% to 5% by weight of the developer-coupler composition of claim 1.
Claim 4
Dependent Claim
17 words
The composition according to claim 1 wherein the developer is in the form of a water-soluble salt.
Claim 5
Dependent Claim
16 words
The emulsion according to claim 2 having a pH in the range of 8 to 10.
Claim 6
Dependent Claim
59 words
An aqueous preparation of the developer-oxidizer type for the dyeing of hair, comprising 0.2% to 5% by weight of the developer-oxidizer combination of claim 1, from 0% to 5% by weight of at least one direct dyestuff; from 0% to 30% by weight of a surfactant; from 0% to 25% by weight of a thickener, and the remainder water.
Claim 7
Dependent Claim
12 words
The composition according to claim 1 wherein the developer is 4-methoxy-2,5,6-triamino pyrimidine.
Claim 8
Dependent Claim
11 words
The composition according to claim 1 wherein the developer is 2-dimethylamino-4-methoxy-6-methylaminopyrimidine.
Claim 9
Dependent Claim
11 words
The composition according to claim 1 wherein the developer is 2-dimethylamino-6-(2-hydroxyethyl)-4-methoxypyrimidine.
Claim 10
Dependent Claim
11 words
The composition according to claim 1 wherein the developer is 6-anilino-2-dimethylamino-4-methoxypyrimidine.
Claim 11
Dependent Claim
11 words
The composition according to claim 1 wherein the developer is 2,6-di(dimethylamino)-4-methoxypyrimidine.
Claim 12
Dependent Claim
22 words
The composition according to claim 1 wherein the coupler is selected from the group consisting of m-diaminoanisol, α-naphthol, 1-phenyl-3-amino-5-pyrazolone, 3-methoxyphenol, and 3-ethoxyphenol.
Claim 13
Dependent Claim
21 words
The composition according to claim 1 wherein the developer and coupler are present in substantially equimolecular proportions, relative to each other.
Claim 14
Dependent Claim
62 words
A process for the dyeing of hair which consists essentially in contacting said hair with an effective amount of an aqueous medium containing a tinctorially effective amount of the developer-coupler composition according to claim 1 at a temperature between 15° C. and 40° C. until said hair has absorbed a tinctorial amount of said medium, and oxidizing said medium on said hair.
Claim 15
Dependent Claim
20 words
The process according to claim 13 wherein said oxidation is effected by the action of air at about room temperature.
Claim 16
Dependent Claim
21 words
The process according to claim 13 wherein said oxidation is effected by the action of hydrogen peroxide at about room temperature.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |