US4337241A
Expired / Lapsed
US
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Emulsions of the water-in-oil or oil-in-water type and cosmetic products using these emulsions
Assignee: L'Oréal SA
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Filing: 1978-02-17
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Granted: 1982-06-29
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Expires: 1998-02-17
Abstract
Abstract Stable emulsions are provided which can be either in the form of "water-in-oil" or "oil-in-water" emulsions and are obtained using a mixture of lanolin acid and at least one natural basic α-amino acid, the proportions in the mixture determining the form of the emulsion.
Inventors
- 👤 Jean-Claude Ser
- 👤 Arlette Zabotto
- 👤 Christian Zaffran
- 👤 Constantin Koulbanis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:13
CPC Classifications
A; A61; A61Q; A61Q1/00; A61Q1/02; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/06; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K8/92; A61K8/925; A61Q19/00; C; C09; C09K; C09K23/00; C09K23/017; Y; Y10; Y10S; Y10S424/00; Y10S424/05
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
33 words
A stable emulsion of the "water-in-oil" or "oil-in-water" type comprising an aqueous phase, an oil phase and an emulsifier which is a mixture of lanolin acid and at least one natural basic α-amino-acid.
Claim 2
Dependent Claim
33 words
A stable emulsion of the "water-in-oil" or "oil-in-water" type comprising an aqueous phase, an oil phase and an emulsifier which is a mixture of lanolin acid and at least one natural basic α-amino-acid.
Claim 3
Dependent Claim
61 words
A stable emulsion of the "water-in-oil" or "oil-in-water" type comprising an aqueous phase, an oil phase and an emulsifier, said emulsifier being a mixture of lanolin acid and at least one natural basic α-amino-acid selected from the group consisting of arginine, histidine and lysine, and said emulsifier being present in an amount from 6 to 20% by weight of the emulsion.
Claim 4
Dependent Claim
61 words
A stable emulsion of the "water-in-oil" or "oil-in-water" type comprising an aqueous phase, an oil phase and an emulsifier, said emulsifier being a mixture of lanolin acid and at least one natural basic α-amino-acid selected from the group consisting of arginine, histidine and lysine, and said emulsifier being present in an amount from 6 to 20% by weight of the emulsion.
Claim 5
Dependent Claim
19 words
An emulsion according to claim 1 in which the natural basic α-amino-acid is selected from arginine, histidine and lysine.
Claim 6
Dependent Claim
22 words
An emulsion according to claim 1, in which the lanolin acid has a mean molecular weight of about 380 to about 480.
Claim 7
Dependent Claim
24 words
A "water-in-oil" emulsion according to claim 1, in which the weight ratio of lanolin acid to natural basic α-amino-acid is from 98:2 to 82:18.
Claim 8
Dependent Claim
17 words
An emulsion according to claim 5, in which the said weight ratio is from 92:8 to 85:15.
Claim 9
Dependent Claim
24 words
An "oil-in-water" emulsion according to claim 1, in which the weight ratio of lanolin acid to natural basic α-amino-acid is from 80:20 to 60:40.
Claim 10
Dependent Claim
17 words
An emulsion according to claim 7 in which the said weight ratio is from 78:22 to 72:28.
Claim 11
Dependent Claim
29 words
An emulsion according to claim 1 in which the emulsifier is present in an amount from 6 to 20% by weight relative to the total weight of the emulsion.
Claim 12
Dependent Claim
21 words
An emulsion according to claim 9 in which the emulsifier is present in an amount from 10 to 18% by weight.
Claim 13
Dependent Claim
27 words
An emulsion according to claim 1 which also contains an adjuvant selected from lanolin alcohol and hydrogenated lanolin in an amount from 6 to 12% by weight.
Claim 14
Dependent Claim
22 words
An emulsion according to claim 11 in which the said adjuvant is present in an amount from 8 to 10% by weight.
Claim 15
Dependent Claim
22 words
An emulsion according to claim 1 in which the water phase is present in an amount from 20 to 70% by weight.
Claim 16
Dependent Claim
22 words
An emulsion according to claim 13 in which the water phase is present in an amount from 25 to 60% by weight.
Claim 17
Dependent Claim
22 words
An emulsion according to claim 1 in which the oil phase is present in an amount from 20 to 75% by weight.
Claim 18
Dependent Claim
22 words
An emulsion according to claim 15 in which the oil phase is present in an amount from 20 to 55% by weight.
Claim 19
Dependent Claim
97 words
An emulsion according to claim 1 in which the oil phase of the emulsion comprises at least one oil taken from the group consisting of paraffin oil, Purcellin oil, perhydrosqualene, or a solution of microcrystalline wax therein, sweet-almond oil, avocado oil, callophylum oil, lanolin, castor oil, caballine oil, lard oil, olive oil, a mineral oil, having an initial distillation temperature at atmospheric pressure of about 250° C. and a final distillation temperature of about 410° C., isopropyl palmitate, isopropyl, butyl or cetyl myristate, hexadecyl stearate, ethyl palmitate, a triglyceride of octanoic or decanoic acid and cetyl ricinoleate.
Claim 20
Dependent Claim
31 words
An emulsion according to claim 1, in which the emulsion contains a cosmetic ingredient selected from the group consisting of a dyestuff, a pigment, a perfume, a preservative and mixtures thereof.
Claim 21
Dependent Claim
29 words
An emulsion according to claim 1 in which the oil phase contains a wax selected from the group consisting of carnauba wax, Candelilla wax, beeswax, microcrystalline wax and ozokerite.
Claim 22
Dependent Claim
60 words
Process for the preparation of an emulsion as defined in claim 1 which comprises first dissolving the lanolin acid in the oil phase at a temperature of about 80° C., whilst stirring, and second adding the water phase containing the natural basic α-amino acid at a temperature of about 80° C. and then stirring the mixture sufficiently to cause emulsification.
Claim 23
Dependent Claim
18 words
Process according to claim 20, in which the emulsion is fined by passing it through a roll mill.
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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |