US3775044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thiocarbamide dioxides, complexing agents and oxidation dyes and hair dyeing therewith
Assignee: Therachemie Chemische Therapeutische GmbH
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Filing: 1972-04-17
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Granted: 1973-11-27
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Expires: 1992-04-17
Abstract
Abstract In a process for dyeing human hair by means of an aqueous composition containing oxidation dyes, the improvement which comprises including in said composition a thiocarbamide dioxide in combination with a complexing agent.
Inventors
- 👤 D Schrader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:58
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46; A61K8/49; A61K8/494; A61Q; A61Q5/00; A61Q5/10; A61K2800/00; A61K2800/40; A61K2800/51
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
15 words
The process as claimed in claim 1 in which the thiocarbamide derivative is thiocarbamide dioxide.
Claim 2
Dependent Claim
31 words
The process as claimed in claim 2, in which the reducing agent is selected from the group consisting of thioglycollic acid, a water-soluble salt of thioglycollic acid, and the mixtures thereof.
Claim 3
Dependent Claim
32 words
The process as claimed in claim 2 in which the organic complexing agent is selected from the group consisting of ethylenediaminetetraacetic acid, a water-soluble salt of ethylenediaminetetraacetic acid, and the mixtures thereof.
Claim 4
Dependent Claim
33 words
The process as claimed in claim 1, in which the thiocarbamide derivative is selected from the group consisting of N-alkylthiocarbamide dioxide and N,N''-dialkylthiocarbamide dioxide, said alkyls having from one to four carbon atoms.
Claim 5
Dependent Claim
31 words
The process as claimed in claim 5, in which the reducing agent is selected from the group consisting of thioglycollic acid, a water-soluble salt of thioglycollic acid, and the mixtures thereof.
Claim 6
Dependent Claim
32 words
The process as claimed in claim 5 in which the organic complexing agent is selected from the group consisting of ethyleNediaminetetraacetic acid, a water-soluble salt of ethylenediaminetetraacetic acid, and the mixtures thereof.
Claim 7
Dependent Claim
51 words
The process of claim 1 wherein said aqueous solution has a further content of from 0.5 to 30 percent by weight of a surfactant selected from the group consisting of alkylbenzenesulfonates, higher fatty alcohol sulfates, higher alkylsulfonates, higher fatty acid ethanolamides and ethylene oxide adducts of higher fatty alcohols and alkylphenols.
Claim 8
Dependent Claim
41 words
The process of claim 1 wherein said aqueous solution has a further content of from 0.1 to 25 percent by weight of thickeners selected from the group consisting of methylcellulose, hydroxymethylcellulose, starch, higher fatty alcohol, vaselin, paraffin oils and fatty acids.
Claim 9
Dependent Claim
79 words
In an aqueous composition for dyeing human hair comprising (a) an oxidiation dyestuffs combination of a developer component and a coupling component, (b) from 0.1 to 3 percent by weight based upon the total composition weight of a reducing agent, (c) in the presence of an oxidizing agent, the improvement which consists of including in said aqueous composition (1) from 0.05 to 2 percent by weight based upon the total composition weight of a thiocarbamide derivative of the formula
Claim 10
Dependent Claim
15 words
The composition as claimed in claim 8, in which the thiocarbamide derivative is thiocarbamide dioxide.
Claim 11
Dependent Claim
15 words
The composition as claimed in claim 9, in which the reducing agent is thioglycollic acid.
Claim 12
Dependent Claim
16 words
The composition as claimed in claim 9 in which the organic complexing agent is ethylenediaminetetraacetic acid.
Claim 13
Dependent Claim
24 words
The composition as claimed in claim 8, in which the thiocarbamide derivative is selected from the group consisting of N-alkylthiocarbamide dioxide and N,N''-dialkylthiocarbamide dioxide.
Claim 14
Dependent Claim
45 words
The composition as claimed in claim 8 in which there is (1) from 0.1 to 0.5 percent by weight of thiocarbamide derivative, (2) from 0.1 to 0.5 percent by weight of complexing agent, and (b) from 1 to 2 percent by weight of reducing agent.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |