Patent US3867094A successfully refreshed from Google Patents.
US3867094A
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Dyeing keratinous fibers with dye compositions containing indoanilines
Assignee: L'Oréal SA
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Filing: 1971-12-29
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Granted: 1975-02-18
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Expires: 1991-12-29
Abstract
Abstract A dye composition for keratinous fibers and in particular, human hair comprises an aqueous solution of an indoaniline having the formula
Inventors
- 👤 Gregoire Kalopissis
- 👤 Andree Bugaut
- 👤 Francoise Estradier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:44
CPC Classifications
C; C09; C09B; C09B53/00; C09B53/02; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/413; A61Q; A61Q5/00; A61Q5/10; Y; Y10; Y10S; Y10S424/00; Y10S424/01; Y10S424/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
14 words
The dye composition of claim 1 having a pH ranging between 4 - 11.
Claim 2
Dependent Claim
26 words
The dye composition of claim 1 which also contains a low molecular weight alkanol present in amounts of 20 - 70 weight percent of said composition.
Claim 3
Dependent Claim
22 words
The dye composition of claim 3 wherein said low molecular weight alkanol is selected from the group consisting of ethanol and isopropanol.
Claim 4
Dependent Claim
32 words
The dye composition of claim 1 which also includes a glycol selected from the group consisting of propylene glycol and butyl glycol present in amounts of 1-6 weight percent of said composition.
Claim 5
Dependent Claim
31 words
The dye composition of claim 1 also including a dye selected from the group consisting of a nitrobenzene dye, an indophenol and an indoaniline other than that defined in claim 1.
Claim 6
Dependent Claim
54 words
A process of dyeing keratinous fibers, comprising impregnating said fibers to be dyed with the composition of claim 1 in amounts effective to dye said keratinous fibers, permitting said composition to remain in contact with said fibers for a period ranging from about 3 to 30 minutes, rinsing said fibers and drying said fibers.
Claim 7
Dependent Claim
133 words
The composition of claim 1 wherein (1) the aqueous solution comprises an aqueous solution of a lower alkanol selected from the group consisting of ethanol and isopropanol present in amounts of about 20 to 70 percent by weight of said composition (2) said composition also includes 1-3 percent by weight of a film forming resin selected from the group consisting of polyvinylpyrrolidone having a molecular weight of 40,000-400,000, copolymer of 10% crotonic acid and 90% vinyl acetate having a molecular weight ranging from 10,000 to 70,000 and a copolymer of vinylpyrrolidone and vinyl acetate having a molecular weight ranging from about 30,000 to 200,000 wherein the ratio of VP to VA ranges between 50-70:50-30, and (3) said indoaniline is present in amounts of about 0.002 to 1 percent by weight of said composition.
References Cited (Backward Citations)
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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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |