US5637291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surfactant-free oil-in-water emulsion stabilized by hollow thermoplastic particles
Assignee: L'Oréal SA
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Filing: 1995-07-11
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Granted: 1997-06-10
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Expires: 2015-07-11
Abstract
Abstract An emulsion of an oily phase in a surfactant-free gelled aqueous phase containing expanded hollow thermoplastic particles of acrylonitrile polymer or copolymer. The particles ensure the dispersion of the oily phase in the gelled aqueous phase and are preferably particles of expanded copolymers of acrylonitrile and acrylic or styrene-based monomers and/or vinylidene chloride. The emulsion obtained can be employed, for example, for the care or cleansing of skin and/or hair or for use in a skin make-up. It can also form a dermatological product.
Inventors
- 👤 Isabelle Bara
- 👤 Philippe Touzan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:22
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K8/0212; A61K8/06; A61K8/062; A61K8/11; A61K8/18; A61K8/30; A61K8/60; A61K8/606; A61K8/72; A61K8/81; A61K8/8141; A61K8/8152; A61Q; A61Q19/00; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; A61Q1/00; A61Q1/02; A61Q1/08; A61Q19/002
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
33 words
A surfactant-free emulsion of an oily phase in a gelled aqueous phase, comprising oil, water, at least one gelling agent and expanded hollow thermoplastic particles of an acrylonitrile polymer or an acrylonitrile copolymer.
Claim 2
Dependent Claim
33 words
A surfactant-free emulsion of an oily phase in a gelled aqueous phase, comprising oil, water, at least one gelling agent and expanded hollow thermoplastic particles of an acrylonitrile polymer or an acrylonitrile copolymer.
Claim 3
Dependent Claim
14 words
The emulsion according to claim 1, characterized in that it is free of monoalcohol.
Claim 4
Dependent Claim
30 words
The emulsion according to claim 1, wherein the at least one gelling agent is selected from the group consisting of carboxyvinyl polymers, polyacrylamides, polyacrylates, polymethacrylates, polysaccharides, natural gums and clays.
Claim 5
Dependent Claim
18 words
The emulsion according to claim 1, wherein the particles have a particle size of 1 to 80 μm.
Claim 6
Dependent Claim
18 words
The emulsion according to claim 1, wherein the particles have a particle size of 10 to 50 μm.
Claim 7
Dependent Claim
19 words
The emulsion according to claim 1, wherein the particles have a density of 15 to 200 kg/m 3 .
Claim 8
Dependent Claim
19 words
The emulsion according to claim 1, wherein the particles have a density of 40 to 120 kg/m 3 .
Claim 9
Dependent Claim
26 words
The emulsion according to claim 1, wherein the particles are present in from 0.1% to 10% by weight relative to the total weight of the emulsion.
Claim 10
Dependent Claim
30 words
The emulsion according to claim 1, wherein the at least one gelling agent is present in from 0.1 to 10% by weight relative to the total weight of the emulsion.
Claim 11
Dependent Claim
25 words
The emulsion according to claim 1, wherein the oily phase represents from 0.1% to 30% by weight relative to the total weight of the emulsion.
Claim 12
Dependent Claim
33 words
The emulsion according to claim 1, further comprising at least one additive selected from the group consisting of hydrophilic active substances, lipophilic active substances, stabilizers, antioxidants, perfumes, fillers, sunscreens, colorants and lipid vesicles.
Claim 13
Dependent Claim
28 words
A process for the cosmetic, dermatological or pharmaceutical treatment of skin and hair or both, comprising applying to the skin, the hair the emulsion according to claim 1.
Claim 14
Independent Claim
41 words
A method for dispersing, without the use of a surfactant, an oily phase in a gelled aqueous phase, comprising the step of mixing expanded hollow thermoplatic particles of acrylonitrile polymer or copolymer with the aqueous gelled phase and the oily phase.
Claim 15
Independent Claim
41 words
A method for dispersing, without the use of a surfactant, an oily phase in a gelled aqueous phase, comprising the step of mixing expanded hollow thermoplatic particles of acrylonitrile polymer or copolymer with the aqueous gelled phase and the oily phase.
Claim 16
Dependent Claim
18 words
The method according to claim 13, wherein the particles have a particle size of 1 to 80 μm.
Claim 17
Dependent Claim
18 words
The method according to claim 13, wherein the particles have a particle size of 10 to 50 μm.
Claim 18
Dependent Claim
19 words
The method according to claim 13, wherein the particles have a density of 15 to 200 kg/m 3 .
Claim 19
Dependent Claim
19 words
The method according to claim 13, wherein the particles have a density of 40 to 120 kg/m 3 .
Claim 20
Dependent Claim
53 words
The method for dispersing, without the use of surfactant, an oily phase in a gelled aqueous phase, as claimed in claim 13, comprising the steps of adding expanded hollow thermoplastic particles of acrylonitrile polymer or copolymer to the aqueous gelled phase, followed by addition of the oily phase to the particle/gelled phase mixture.
Claim 21
Dependent Claim
14 words
The emulsion as claimed in claim 1, further comprising a cosmetic or dermatological adjuvant.
Claim 22
Dependent Claim
40 words
The emulsion according to claim 1, wherein the particles are expanded hollow particles of a copolymer containing from 0-60 wt. % vinylidene chloride units, from 20-90 wt. % acrylonitrile units and from 0-50 wt. % of (meth)acrylic or styrene units.
Claim 23
Dependent Claim
22 words
The emulsion according to claim 1, wherein the emulsion contains from 0.1% to 10% by weight of said expanded hollow thermoplastic particles.
Claim 24
Dependent Claim
19 words
The emulsion according to claim 21, wherein the amount of said particles ranges from 0.5 to 5% by weight.
Claim 25
Dependent Claim
40 words
The method according to claim 13, wherein the particles are expanded hollow particles of a copolymer containing from 0-60 wt. % vinylidene chloride units, from 20-90 wt. % acrylonitrile units and from 0-50 wt. % of (meth)acrylic or styrene units.
Claim 26
Dependent Claim
22 words
The method according to claim 13, wherein the emulsion contains from 0.1% to 10% by weight of said expanded hollow thermoplastic particles.
Claim 27
Dependent Claim
19 words
The method according to claim 24, wherein the amount of said particles ranges from 0.5 to 5% by weight.
References Cited (Backward Citations)
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