Patent US3929403A successfully refreshed from Google Patents.
US3929403A
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Process for producing indoanilines and keratin fiber dye composition containing the same
Assignee: L'Oréal SA
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Filing: 1973-02-28
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Granted: 1975-12-30
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Expires: 1993-02-28
Abstract
Abstract A two-stage process for producing indoanilines includes oxidizing in a first stage a paraphenylene diamine to a quinone diimine and in a second stage condensing the said quinone diimine with a phenolic compound. The resulting indoanilines can be incorporated into a dye composition for keratinous fibers, especially, human hair.
Inventors
- 👤 Gregoire Kalopissis
- 👤 Andree Bugaut
- 👤 Francoise Estradier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:33
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/08; 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: 10
Claim 1
Independent Claim
35 words
A HAIR DYE COMPOSITION CONSISTING ESSENTIALLY OF A SOLUTION OF AN INDOANILINE IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER AND AN AQUEOUS SOLUTION OF A LOWER ALKANOL, SAID INDOANILINE HAVING THE FORMULA
Claim 2
Dependent Claim
35 words
A HAIR DYE COMPOSITION CONSISTING ESSENTIALLY OF A SOLUTION OF AN INDOANILINE IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER AND AN AQUEOUS SOLUTION OF A LOWER ALKANOL, SAID INDOANILINE HAVING THE FORMULA
Claim 3
Dependent Claim
26 words
The dye composition of claim 1 wherein at least two of R1 to R7 are other than hydrogen and R5 and R7 are not simultaneously chlorine.
Claim 4
Dependent Claim
16 words
The dye composition of claim 1 having a pH ranging between about 5 to about 11.
Claim 5
Dependent Claim
12 words
The dye composition of claim 3 having a pH ranging between 7-11.
Claim 6
Dependent Claim
164 words
The dye composition of claim 1 wherein the solvent is an aqueous solution of a lower alkanol and said composition includes a film forming resin selected from the group consisting of polyvinylpyrrolidone, copolymer of polyvinylpyrrolidone and vinyl acetate, copolymer of vinyl acetate and crotonic acid, copolymEr of vinyl acetate, crotonic acid and an acrylic or methacrylic ester, copolymer of vinyl acetate and a vinyl alkyl ether, copolymer of vinyl acetate, crotonic acid and a vinyl ester of a long carbon chain acid or an allyl or methallyl ester of a long carbon chain acid, copolymer of an ester of an unsaturated alcohol and a short carbon chain acid, an unsaturated short carbon chain acid and at least one ester of a saturated alcohol and an unsaturated short carbon chain acid and copolymer of at least one unsaturated ester and at least one unsaturated acid, said film forming resin being present in amounts of about 1-3 weight percent based on the weight of said composition.
Claim 7
Dependent Claim
20 words
The dye composition of claim 5 wherein the lower alkanol is selected from the group consisting of ethanol and isopropanol.
Claim 8
Dependent Claim
22 words
The dye composition of claim 5 wherein the lower alkanol is present in amounts of about 20-50 weight percent of said composition.
Claim 9
Dependent Claim
50 words
A method for dyeing human hair comprising impregnating the hair with a dye composition according to claim 1, permitting said composition to remain in contact with said hair for a period of time ranging from about 5 to about 30 minutes, rinsing said hair with water and drying said hair.
Claim 10
Dependent Claim
31 words
A method for setting and temporary dyeing human hair which comprises impregnating the wet hair with a dye composition according to claim 5 and then rolling up 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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |