Patent US3619102A successfully refreshed from Google Patents.
US3619102A
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Dyeing keratinic fibers with aqueous solutions of direct dyes and organic solvents
Assignee: L'Oréal SA
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Filing: 1968-06-07
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Granted: 1971-11-09
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Expires: 1988-06-07
Abstract
Abstract IN WHICH R is selected from the group consisting of an alkyl radical having three to eight carbon atoms, C6H5, (C6H5-CH2), and C6H11, and n is a number between one and four inclusive. The invention also includes a method of making the composition. A composition for dyeing keratinic fibers and particularly human hair which comprises, in aqueous solution, at least one direct dye having a poor affinity for the fiber at room temperature and an organic solvent which is inert to both the dye and the fiber, and corresponds to the formula
Inventors
- 👤 Charles Zviak
- 👤 Giuliana Ghilardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:33
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/35; A61K8/355; A61K8/39; A61Q; A61Q5/00; A61Q5/06; A61Q5/065
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
33 words
A composition as claimed in claim 1 in which said at least one direct dye is selected from the group consisting of nitro dyes, disperse dyes, solvent dyes, metallic dyes and basic dyes.
Claim 2
Dependent Claim
134 words
A composition as claimed in claim 1 which comprises at least one further solvent selected from the group consisting of (a) a solvent having the formula R-(O-CH2-CH2)nOH wherein R represents alkyl having at most eight carbon atoms and n is a number between 1 and 4 inclusive, (b) butyl alcohol in amounts up to 5 weight percent of said composition, (c) thiodiglycol in amounts up to 10 weight percent of said composition, (d) diacetone alcohol in amounts up to 10 weight percent of said composition, (e) an aromatic alcohol selected from the group consisting of benzyl and betaphenylethyl alcohol in amounts up to 4 weight percent of said composition and (f) an alicyclic alcohol selected from the group consisting of cyclohexanol and furfuryl alcohol in amounts up to 3 weight percent of said composition.
Claim 3
Dependent Claim
38 words
The method of dyeing hair which comprises the step of applying thereto an effective amount of a composition as claimed in claim 1, for a period of at least 15 minutes, and then rinsing and drying the hair.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |