US5607664A
Expired / Lapsed
US
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Photoprotective/cosmetic compositions comprising UV-A and/or UV-B sunscreens and polymers compatible therewith
Assignee: L'Oréal SA
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Filing: 1995-06-05
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Granted: 1997-03-04
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Expires: 2015-06-05
Abstract
Abstract Topically applicable sunscreen/cosmetic compositions well suited for enhanced photoprotection of human skin and/or hair against the damaging effects of UV-A and UV-B irradiation, particularly solar radiation, comprise (i) a photoprotecting effective amount of at least one organic or inorganic UV screen, or mixture thereof, and (ii) at least one polymer compatible therewith, said at least one polymer comprising recurring structural units of the following formula (I) and recurring structural units of the following formulae (II) and/or (III): <IMAGE> (I) <IMAGE> (II) <IMAGE> (III) in a cosmetically acceptable vehicle, diluent or carrier therefor which comprises a continuous aqueous phase.
Inventors
- 👤 Jean-Marc Ascione
- 👤 Delphine Allard
- 👤 Isabelle Hansenne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:00
CPC Classifications
B; B82; B82Y; B82Y5/00; A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/29; A61K8/72; A61K8/81; A61K8/8141; A61K8/8147; A61K8/8152; A61P; A61P17/00; A61P17/16; A61Q; A61Q17/00; A61Q17/04; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/413
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
192 words
A topically applicable sunscreen/cosmetic composition adopted for the photoprotection of human skin and/or hair, comprising (i) a photoprotecting effective amount of at least one organic or inorganic UV screen, or mixture thereof, and (ii) at least one polymer compatible therewith, said at least one polymer comprising recurring structural units of the following formula (I) and recurring structural units of the following formulae (II) and/or (III): ##STR3## in which a is an integer equal to 0 or 1, R 1 , R 2 , R 3 and R 4 , which may be identical or different, are each hydrogen atoms or a C 1 -C 4 alkyl radical, R 5 is a CH 3 CO-- radical or a radical R 6 --(OC 2 H 5 ) b --, wherein R 6 is a C 2 -C 20 alkyl radical, and b is an integer ranging from 1 to 20, inclusive, with the proviso that, when the polymer is devoid of recurring structural units of formula (II), the radicals R 2 and R 4 cannot simultaneously be hydrogen atoms, in a cosmetically acceptable vehicle, diluent or carrier therefor which comprises a continuous aqueous phase.
Claim 2
Dependent Claim
192 words
A topically applicable sunscreen/cosmetic composition adopted for the photoprotection of human skin and/or hair, comprising (i) a photoprotecting effective amount of at least one organic or inorganic UV screen, or mixture thereof, and (ii) at least one polymer compatible therewith, said at least one polymer comprising recurring structural units of the following formula (I) and recurring structural units of the following formulae (II) and/or (III): ##STR3## in which a is an integer equal to 0 or 1, R 1 , R 2 , R 3 and R 4 , which may be identical or different, are each hydrogen atoms or a C 1 -C 4 alkyl radical, R 5 is a CH 3 CO-- radical or a radical R 6 --(OC 2 H 5 ) b --, wherein R 6 is a C 2 -C 20 alkyl radical, and b is an integer ranging from 1 to 20, inclusive, with the proviso that, when the polymer is devoid of recurring structural units of formula (II), the radicals R 2 and R 4 cannot simultaneously be hydrogen atoms, in a cosmetically acceptable vehicle, diluent or carrier therefor which comprises a continuous aqueous phase.
Claim 3
Dependent Claim
22 words
The sunscreen/cosmetic composition as defined by claim 1, comprising from 0.05% to 15% by weight of said at least one polymer (ii).
Claim 4
Dependent Claim
22 words
The sunscreen/cosmetic composition as defined by claim 2, comprising from 0.1% to 4% by weight of said at least one polymer (ii).
Claim 5
Dependent Claim
28 words
The sunscreen/cosmetic composition as defined by claim 1, comprising (i) a photoprotecting effective amount of at least one UV absorbing organic sunscreen and/or at least one inorganic (nano)pigment.
Claim 6
Dependent Claim
28 words
The sunscreen/cosmetic composition as defined by claim 4, comprising at least one inorganic (nano)pigment based on the oxides of titanium, zinc, iron, zirconium or cerium, or mixtures thereof.
Claim 7
Dependent Claim
14 words
The sunscreen/cosmetic composition as defined by claim 5, comprising at least one inorganic nanopigment.
Claim 8
Dependent Claim
17 words
The sunscreen/cosmetic composition as defined by claim 6, said at least one inorganic nanopigment comprising titanium dioxide.
Claim 9
Dependent Claim
15 words
The sunscreen/cosmetic composition as defined by claim 7, comprising rutile, anatase or amorphous titanium dioxide.
Claim 10
Dependent Claim
21 words
The sunscreen/cosmetic composition as defined by claim 4, comprising from 0.1% to 30% by weight of at least one inorganic (nano)pigment.
Claim 11
Dependent Claim
21 words
The sunscreen/cosmetic composition as defined by claim 9, comprising from 1% to 20% by weight of said at least one (nano)pigment.
Claim 12
Dependent Claim
23 words
The sunscreen/cosmetic composition as defined by claim 4, comprising from 0.1% to 30% by weight of at least one UV absorbing organic sunscreen.
Claim 13
Dependent Claim
39 words
The sunscreen/cosmetic composition as defined by claim 1, said at least one polymer (ii) comprising a crosslinked terpolymer of methacrylic acid/ethyl acrylate/steareth-10 allyl ether, a crosslinked copolymer of acrylic acid/vinyl acetate, or a crosslinked copolymer of acrylic acid/ethyl acrylate.
Claim 14
Dependent Claim
12 words
The sunscreen/cosmetic composition as defined by claim 1, comprising an oil-in-water emulsion.
Claim 15
Dependent Claim
35 words
The sunscreen/cosmetic composition as defined by claim 4, comprising at least one cinnamic derivative, salicylic derivative, camphor derivative, triazine derivative, benzophenone derivative, dibenzoylmethane derivative, β, β-diphenylacrylate derivative, p-aminobenzoic acid derivative, sunscreen polymer, or sunscreen silicone.
Claim 16
Dependent Claim
24 words
The sunscreen/cosmetic composition as defined by claim 1, further comprising at least one active agent for the artificial tanning and/or browning of human skin.
Claim 17
Dependent Claim
18 words
The sunscreen/cosmetic composition as defined by claim 1, further comprising at least one cosmetically acceptable adjuvant or additive.
Claim 18
Dependent Claim
61 words
The sunscreen/cosmetic composition as defined by claim 16, said at least one adjuvant or additive comprising a fat, organic solvent, ionic or nonionic thickening agent, softener, antioxidant, anti-free-radical antioxidant, opacifying agent, stabilizing agent, emollient, silicone, α-hydroxy acid, anti-foaming agent, hydrating agent, vitamin, fragrance, preservative, surfactant, filler, sequestering agent, polymer, propellant, insect repellent, basifying or acidifying agent, dye, colorant, or mixture thereof.
Claim 19
Dependent Claim
20 words
The sunscreen/cosmetic composition as defined by claim 1, comprising a cream, milk, gel, cream gel, ointment, foam, mousse or spray.
Claim 20
Dependent Claim
11 words
The sunscreen/cosmetic composition as defined by claim 1, comprising a makeup.
Claim 21
Dependent Claim
31 words
A method for protecting human skin and/or hair against the deleterious effects of ultraviolet irradiation, comprising topically applying thereto an effective amount of the sunscreen/cosmetic composition as defined by claim 1.
Claim 22
Dependent Claim
31 words
A method for protecting human skin and/or hair against the deleterious effects of solar radiation, comprising topically applying thereto an effective amount of the sunscreen/cosmetic composition as defined by claim 1.
Claim 23
Dependent Claim
37 words
The sunscreen/cosmetic composition of claim 1, wherein the polymer is one which imparts a viscosity of at least 5 poises to an aqueous medium when introduced at a concentration ranging from about 0.2% to 2% by weight.
Claim 24
Dependent Claim
54 words
The sunscreen/cosmetic composition of claim 1, wherein if the polymer is devoid of recurring structural units of formula (II), then the polymer consists substantially of recurring structural units of formula (I) and recurring structural units of formula (III), wherein in said monomers the radicals R 2 and R 4 cannot simultaneously be hydrogen atoms.
Claim 25
Dependent Claim
54 words
The sunscreen/cosmetic composition of claim 1, wherein if the polymer is devoid of recurring structural units of formula (II), then the polymer consists essentially of recurring structural units of formula (I) and recurring structural units of formula (III), wherein in said monomers the radicals R 2 and R 4 cannot simultaneously be hydrogen atoms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2000-03-03 | 2000-09-02 | 2001-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-03 | 2004-09-02 | 2005-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-03 | 2008-09-02 | 2009-03-04 | $7700.00 | Window Closed / Lapsed |