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US6120780A
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Cosmetic use of a crosslinked and at least 90% neutralized poly(2-acrylamido-2-methylpropanesulphonic acid) and topical compositions containing it
Assignee: L'Oréal SA
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Filing: 1997-06-18
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Granted: 2000-09-19
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Expires: 2017-06-18
Abstract
Abstract PCT No. PCT/FR97/01098 Sec. 371 Date Oct. 27, 1998 Sec. 102(e) Date Oct. 27, 1998 PCT Filed Jun. 18, 1997 PCT Pub. No. WO98/00094 PCT Pub. Date Jan. 8, 1998The present application relates to the use, as a cosmetic product, of crosslinked and at least 90% neutralized poly(2-acrylamido-2-methylpropanesulphonic acid) polymers. They generally comprise, distributed randomly: a) from 90 to 99.9% by weight of units of general formula (1) below: in which X+ denotes a cation or a mixture of cations, not more than 10 mol % of the cations X+ being able to be protons H+; b) from 0.01 to 10% by weight of crosslinking units derived from at least one monomer having at least two olefinic double bonds; the weight proportions being defined relative to the total weight of the polymer. The present application relates in particular to their use as thickener and/or gelling agent in cosmetic and/or dermatological compositions.
Inventors
- 👤 Christine Dupuis
- 👤 Isabelle Hansenne
- 👤 Mireille Maubru
- 👤 Laurence Sebillotte-Arnaud
- 👤 Raluca Lorant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:59
CPC Classifications
A; A61; A61Q; A61Q19/00; A61Q19/10; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/88; A61K8/73; A61K8/731; A61K8/81; A61K8/8141; A61K8/8158; A61K8/817; A61K8/8182; A61Q1/00; A61Q1/02; A61Q1/10; A61Q11/00; A61Q17/00; A61Q17/02; A61Q17/04; A61Q5/00; A61Q5/02; A61Q5/06
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
24 words
A cosmetic or dermatological composition comprising in a cosmetically or dermatological acceptable medium at least one crosslinked, at least 90% neutralized poly(2-acrylamido-2-methylpropanesulphonic acid) polymer.
Claim 2
Dependent Claim
24 words
A cosmetic or dermatological composition comprising in a cosmetically or dermatological acceptable medium at least one crosslinked, at least 90% neutralized poly(2-acrylamido-2-methylpropanesulphonic acid) polymer.
Claim 3
Dependent Claim
23 words
A cosmetic or dermatological composition according to claim 1, wherein said at least one polymer is present as a thickener and/or gelling agent.
Claim 4
Dependent Claim
121 words
A cosmetic or dermatological composition according to claim 1, wherein said at least one polymer comprises the following units (a) and (b), distributed randomly: (a) at least one unit of formula (I) in an amount ranging from 90 to 99.9% by weight relative to the total weight of said at least one polymer: ##STR4## wherein X + denotes at least one cation and no more than 10 mol % of said at least one cation X + comprises protons H + ; (b) at least one crosslinking unit comprising at least one monomer having at least two olefinic double bonds in an amount ranging from 0.01 to 10% by weight relative to the total weight of said at least one polymer.
Claim 5
Dependent Claim
55 words
A cosmetic or dermatological composition according to claim 3, wherein said at least one polymer contains a sufficient number of units of formula to obtain polymer particles whose hydrodynamic volume in solution in water has a radius ranging from 10 to 500 nm, and wherein the distribution of said polymer particles is homogenous and unimodal.
Claim 6
Dependent Claim
57 words
A cosmetic or dermatological composition according to claim 3, wherein said at least one unit of formula (I) is present in an amount ranging from 98 to 99.5% by weight, and said at least one crosslinking unit is present in an amount ranging from 0.2 to 2% by weight relative to the total weight of said composition.
Claim 7
Dependent Claim
33 words
A cosmetic or dermatological composition according to claim 3, wherein said at least one cation (X + ) is a proton, an alkali metal cation, an alkaline-earth metal cation, or an ammonium ion.
Claim 8
Dependent Claim
38 words
A cosmetic or dermatological composition according to claim 3, wherein said at least one cation X + comprises from 90 to 100 mol % NH 4 + cations and from 0 to 10 mol % H + protons.
Claim 9
Dependent Claim
44 words
A cosmetic or dermatological composition according to claim 3, wherein said at least one cross-linking monomer having at least two olefinic double bonds is a monomer of formula (II): ##STR5## in which R 1 denotes a hydrogen atom or C 1 -C 4 alkyl.
Claim 10
Dependent Claim
26 words
A cosmetic or dermatological composition according to claim 8, wherein said at least one cross-linking monomer having at least two olefinic double bonds is methyl(trimethylolpropane triacrylate).
Claim 11
Dependent Claim
46 words
A cosmetic or dermatological composition according to claim 1, wherein said at least one polymer has a viscosity, measured with a Brookfield viscometer, rotor 4, at a spin speed of 100 revolutions/minute in an aqueous 2% solution and at 25° C., of at least 1000 cps.
Claim 12
Dependent Claim
24 words
A cosmetic or dermatological composition according to claim 10, wherein said at least one polymer has a viscosity ranging from 5000 to 40,000 cps.
Claim 13
Dependent Claim
24 words
A cosmetic or dermatological composition according to claim 11, wherein said at least one polymer has a viscosity ranging from 6500 to 35,000 cps.
Claim 14
Dependent Claim
35 words
A cosmetic or dermatological composition according to claim 1, wherein said at least one polymer is present in an amount ranging from 0.01 to 20% by weight relative to the total weight of said composition.
Claim 15
Dependent Claim
35 words
A cosmetic or dermatological composition according to claim 13, wherein said at least one polymer is present in an amount ranging from 0.1 to 10% by weight relative to the total weight of said composition.
Claim 16
Dependent Claim
40 words
A cosmetic or dermatological composition according to claim 1, wherein said composition is in the form of a dispersion, an aqueous or oily gel, a semi-liquid or liquid emulsion, or a suspension or emulsion of soft, semi-solid, or solid consistency.
Claim 17
Dependent Claim
56 words
A cosmetic or dermatological composition according to claim 15, wherein said dispersion is a lotion or serum, said liquid or semi-liquid emulsion is an oil-in-water emulsion or a water-in-oil emulsion, and said suspension or emulsion of soft, semi-solid, or solid consistency is in the form of a cream, a paste, a gel, or a solid bar.
Claim 18
Dependent Claim
20 words
A cosmetic or dermatological composition according to claim 1, wherein said composition has a pH ranging from 1 to 13.
Claim 19
Dependent Claim
20 words
A cosmetic or dermatological composition according to claim 17, wherein said composition has a pH ranging from 2 to 12.
Claim 20
Dependent Claim
28 words
A cosmetic or dermatological composition according to claim 1, wherein said medium comprises water or water in combination with at least one cosmetically and/or dermatologically acceptable organic solvent.
Claim 21
Dependent Claim
29 words
A cosmetic or dermatological composition according to claim 19, wherein said at least one organic solvent is a hydrophilic organic solvent, a lipophilic organic solvent, or an amphiphilic solvent.
Claim 22
Dependent Claim
36 words
A cosmetic or dermatological composition according to claim 19, wherein said at least one organic solvent is present in an amount ranging from 5 to 99% by weight relative to the total weight of said composition.
Claim 23
Dependent Claim
43 words
A cosmetic or dermatological composition according to claim 20, wherein said at least one organic solvent is a mono- or polyfunctional alcohol, optionally oxyethylenated polyethylene glycol, propylene glycol ester, sorbitol, a sorbitol derivative, di-alkyl isosorbide, glycol ether, propylene glycol ether or fatty ester.
Claim 24
Dependent Claim
19 words
A cosmetic or dermatological composition according to claim 1, wherein said composition further comprises at least one fatty phase.
Claim 25
Dependent Claim
36 words
A cosmetic or dermatological composition according to claim 23, wherein said at least one fatty phase is present in an amount ranging from 0 to 50% by weight relative to the total weight of said composition.
Claim 26
Dependent Claim
63 words
A cosmetic or dermatological composition according to claim 1, wherein said composition further comprises at least one additive selected from: cosmetic and/or dermatological aqueous or lipophilic gelling agents and/or thickeners; hydrophilic or lipophilic active agents; preserving agents; antioxidants; fragrances; emulsifiers; moisturizers; emollients; sequestering agents; surfactants; polymers; basifying or acidifying agents; fillers; anti-free-radical agents; sunscreens; insect repellants; slimming agents; dyestuffs; bactericides; and antidandruff agents.
Claim 27
Dependent Claim
34 words
A cosmetic or dermatological composition according to claim 1, wherein said composition is in the form of a rinse-out or leave-in hair product for washing, care, conditioning, maintenance of style of, or shaping hair.
Claim 28
Dependent Claim
34 words
A cosmetic or dermatological composition according to claim 1, wherein said composition is in the form of a care product, a hygiene product, a make-up product, an anti-sun product, or a buccodental care product.
Claim 29
Dependent Claim
36 words
A process for thickening or gelling a cosmetic or dermatological composition, said process comprising in a cosmetically or dermatological acceptable medium including at least one crosslinked, at least 90% neutralized, poly(2-acrylamido-2-methylpropanesulphonic acid) polymer in said composition.
Claim 30
Dependent Claim
36 words
A process for thickening or gelling a cosmetic or dermatological composition, said process comprising in a cosmetically or dermatological acceptable medium including at least one crosslinked, at least 90% neutralized, poly(2-acrylamido-2-methylpropanesulphonic acid) polymer in said composition.
Claim 31
Dependent Claim
39 words
A process for the non-therapeutic cosmetic treatment of the skin, scalp, hair, eyelashes, eyebrows, nails or mucous membranes, comprising applying at least one composition according to claim 1 to said skin, scalp, hair, eyelashes, eyebrows, nails or mucous membranes.
Claim 32
Dependent Claim
24 words
A cosmetic or dermatological composition according to claim 3, wherein said at least one poly(2-acrylamido-2-methylpropane sulphonic acid) polymer is crosslinked with trimethylol propane triacrylate.
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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) | 2003-09-19 | 2004-03-20 | 2004-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-19 | 2008-03-20 | 2008-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-19 | 2012-03-20 | 2012-09-19 | $7700.00 | Window Closed / Lapsed |