US5595197A
Expired / Lapsed
US
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Process for directly coloring keratinous fibres using sulphonic dyes and water vapor
Assignee: L'Oréal SA
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Filing: 1994-12-16
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Granted: 1997-01-21
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Expires: 2014-12-16
Abstract
Abstract A process for directly dyeing keratinous fibres, characterized in that it comprises contacting the fibres with a composition containing at least one direct dye having at least one sulphonic functional group and with a gas containing water vapor, the temperature of the gas being at least 75 DEG C. and the contact time between the gas and the fibres to be dyed not exceeding two minutes. This process makes it possible to obtain excellent dyeing results in extremely restricted time periods and without risk of substantially staining the skin or the scalp.
Inventors
- 👤 Henri Samain
- 👤 Jean-Michel Sturla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:51
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A45; A45D; A45D19/00; A45D19/0041; A45D19/0066; A61K8/02; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; A61K2800/00; A61K2800/40; A61K2800/42; A61K2800/43; A61K2800/432
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
73 words
A process for the direct dyeing of keratinous fibres comprising the step of: directly dyeing said fibres, said fibres having previously been contacted with a composition containing at least one direct dye containing a sulphonic functional group, by contacting said fibres with a gas containing water vapour, said gas having a temperature greater than 75° C., for a contact time between said gas and said fibres to be dyed less than two minutes.
Claim 2
Dependent Claim
73 words
A process for the direct dyeing of keratinous fibres comprising the step of: directly dyeing said fibres, said fibres having previously been contacted with a composition containing at least one direct dye containing a sulphonic functional group, by contacting said fibres with a gas containing water vapour, said gas having a temperature greater than 75° C., for a contact time between said gas and said fibres to be dyed less than two minutes.
Claim 3
Dependent Claim
17 words
A process according to claim 1, wherein the gas has a temperature of at least 85° C.
Claim 4
Dependent Claim
18 words
A process according to claim 2, wherein the gas has a temperature ranging from 85° to 150° C.
Claim 5
Dependent Claim
31 words
A process according to claim 1, wherein the gas is contacted with the fibres to be dyed for a period of time ranging from 0.01 second to less than 2 minutes.
Claim 6
Dependent Claim
29 words
A process according to claim 4, wherein the gas is contacted with the fibres to be dyed for a period of time ranging from 0.01 second to 30 seconds.
Claim 7
Dependent Claim
29 words
A process according to claim 5, wherein the gas is contacted with the fibres to be dyed for a period of time ranging from 0.5 second to 10 seconds.
Claim 8
Dependent Claim
19 words
A process according to claim 1, wherein the application of the gas is repeated several times on the fibres.
Claim 9
Dependent Claim
13 words
A process according to claim 1, wherein the gas contains exclusively water vapour.
Claim 10
Dependent Claim
25 words
A process according to claim 1, wherein the gas contains water vapour and at least one other compound in the form of gas or vapour.
Claim 11
Dependent Claim
14 words
A process according to claim 9, wherein the gas contains water vapour and air.
Claim 12
Dependent Claim
47 words
A process according to claim 1, wherein said at least one direct dye containing sulphonic functional groups is selected from the compounds denoted under the code C.I. 60730, C.I. 15510, C.I. 47005, C.I. 15985, C.I. 17200, C.I. 20470, C.I. 42090 and C.I. 61570 in the Colour Index.
Claim 13
Dependent Claim
37 words
A process according to claim 1, wherein said at least one direct dye containing sulphonic functional groups is present in concentrations ranging from 0.01% to 10% by weight with respect to the total weight of the composition.
Claim 14
Dependent Claim
28 words
A process according to claim 1, wherein the composition containing at least one direct dye containing a sulphonic functional group has a pH ranging from 2 to 11.
Claim 15
Dependent Claim
14 words
A process according to claim 1, wherein said keratinous fibres are human keratinous fibres.
Claim 16
Dependent Claim
21 words
A process according to claim 1, wherein said gas has a temperature ranging from 75° C. to less than 100° C.
Claim 17
Dependent Claim
21 words
A process according to claim 15, wherein said gas has a temperature ranging from 85° C. to less than 100° C.
Claim 18
Dependent Claim
21 words
A process according to claim 16, wherein said gas has a temperature ranging from 90° C. to less than 100° C.
Claim 19
Dependent Claim
70 words
A process for the direct dyeing of keratinous fibres comprising the step of: directly dyeing said fibres by contacting said fibres with a composition containing at least one direct dye containing a sulphonic functional group and with a gas containing water vapour, for a time not exceeding two minutes, and wherein said gas has a temperature sufficient to dye said fibres without substantially staining the skin adjacent to said fibres.
Claim 20
Dependent Claim
70 words
A process for the direct dyeing of keratinous fibres comprising the step of: directly dyeing said fibres by contacting said fibres with a composition containing at least one direct dye containing a sulphonic functional group and with a gas containing water vapour, for a time not exceeding two minutes, and wherein said gas has a temperature sufficient to dye said fibres without substantially staining the skin adjacent to said fibres.
Claim 21
Dependent Claim
14 words
A process according to claim 18, wherein said keratinous fibres are human keratinous fibres.
Claim 22
Dependent Claim
69 words
A process for the direct dyeing of keratinous fibres comprising the steps of: directly dyeing said fibres by contacting said fibres with a composition containing at least one direct dye containing a sulphonic functional group and with a gas containing water vapour, said gas having a temperature of at least 75° C., for a contact time between said gas and said fibres to be dyed not exceeding two minutes.
Claim 23
Dependent Claim
69 words
A process for the direct dyeing of keratinous fibres comprising the steps of: directly dyeing said fibres by contacting said fibres with a composition containing at least one direct dye containing a sulphonic functional group and with a gas containing water vapour, said gas having a temperature of at least 75° C., for a contact time between said gas and said fibres to be dyed not exceeding two minutes.
Claim 24
Dependent Claim
37 words
A process according to claim 20, wherein said gas containing water vapour is contacted with said fibres subsequent to said fibres being contacted with a composition containing at least one direct dye containing a sulphonic functional group.
Claim 25
Dependent Claim
37 words
A process according to claim 20, wherein said gas containing water vapour is contacted with said fibres simultaneously with said fibres being contacted with a composition containing at least one direct dye containing a sulphonic functional group.
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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) | 2000-01-21 | 2000-07-22 | 2001-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-21 | 2004-07-22 | 2005-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-21 | 2008-07-22 | 2009-01-21 | $7700.00 | Window Closed / Lapsed |