US4043750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer-coupler hair dyes based on triamino-pyrimidinones
Assignee: Henkel AG and Co KGaA
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Filing: 1976-04-05
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Granted: 1977-08-23
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Expires: 1996-04-05
Abstract
Abstract Water-soluble substituted and unsubstituted triamino pyrimidinones are effective dyes for hair when oxidized in conjunction with a coupling agent. The oxidation can be performed at an alkaline pH at room temperature with air, and provides long-lasting and light-fast dyeings over a broad color range.
Inventors
- 👤 Hans Peter Kubersky
- 👤 Erwin Weinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:07
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
119 words
A composition of the developer-oxidizer type for the dyeing of hair, consisting essentially of, as developer, a water-soluble substituted 2,5,6-triamino-4-pyrimidinone of the formulae: ##STR3## wherein R 1 -R 5 each represent hydrogen, C 1-4 alkyl, C 1-4 hydroxyalkyl, phenyl, phenyl C 1-4 alkyl, C 1-4 alkoxyphenyl, C 1-4 alkyl, and di-(C 1-4 alkyl) aminophenyl, and wherein either or both of the R 1 -R 2 and R 4 -R 5 pairs, together with the nitrogen atom to which they are respectively attached, form a 5- or 6-membered heterocyclic ring, optionally containing another nitrogen atom or an oxygen atom, and a water-soluble coupler therefor, said developer and said coupler being present in the molar range of about 2:1 to 1:2.
Claim 2
Dependent Claim
119 words
A composition of the developer-oxidizer type for the dyeing of hair, consisting essentially of, as developer, a water-soluble substituted 2,5,6-triamino-4-pyrimidinone of the formulae: ##STR3## wherein R 1 -R 5 each represent hydrogen, C 1-4 alkyl, C 1-4 hydroxyalkyl, phenyl, phenyl C 1-4 alkyl, C 1-4 alkoxyphenyl, C 1-4 alkyl, and di-(C 1-4 alkyl) aminophenyl, and wherein either or both of the R 1 -R 2 and R 4 -R 5 pairs, together with the nitrogen atom to which they are respectively attached, form a 5- or 6-membered heterocyclic ring, optionally containing another nitrogen atom or an oxygen atom, and a water-soluble coupler therefor, said developer and said coupler being present in the molar range of about 2:1 to 1:2.
Claim 3
Dependent Claim
23 words
An aqueous emulsion for dyeing the 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
60 words
An aqueous preparation of the developer-oxidizer type for the dyeing of hair, consisting essentially of 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; 0% to 25% by weight of a thickener, and the remainder water.
Claim 7
Dependent Claim
11 words
The composition according to claim 1 wherein the developer is 2,5,6-triamino-3,4-dihydro-4-pyrimidinone.
Claim 8
Dependent Claim
11 words
The composition according to claim 1 wherein the developer is 2,5-diamino-6-methylamino-3,4-dihydro-4-pyrimidinone.
Claim 9
Dependent Claim
11 words
The composition according to claim 1 wherein the developer is 2,5-diamino-6-(2-hydroxyethyl)3,4-dihydro-pyrimidinone.
Claim 10
Dependent Claim
11 words
The composition according to claim 1 wherein the developer is 2-(dimethylaminophenyl)3,4-dihydro-pyrimidinone.
Claim 11
Dependent Claim
11 words
The composition according to claim 1 wherein the developer is 5,6-diamino-2-morpholino-3,4-pyrimidinone.
Claim 12
Dependent Claim
21 words
The composition according to claim 1 wherein the coupler is selected from the group consisting of α-naphthol, m-diaminoanisol, 1-phenyl-3-amino-5-pyrazolone, and 3-methoxyphenol.
Claim 13
Dependent Claim
21 words
The composition according to claim 1 wherein the developer and coupler are present in substantially equimolar amounts, 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.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |