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US5833969A
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Aqueous cosmetic composition containing stably solubilized uric acid and amphoteric surfactant and method for stably solubilizing uric acid in aqueous cosmetic composition
Assignee: Henkel Lion Cosmetics Co Ltd
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Filing: 1997-07-30
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Granted: 1998-11-10
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Expires: 2017-07-30
Abstract
Abstract An aqueous cosmetic composition containing uric acid in a stably solubilized state together with 0.01 to 1.3% by weight of one or more amphoteric surfactants selected from the group consisting of (a) lauric acid amide propyl betaine, (b) alkyl carboxymethyl hydroxyethyl imidazolinium betaine, (c) coconut oil fatty acid amide propylmethylaminoacetic acid betaine, (d) sodium salt of coconut oil fatty acid acyl carboxymethyl hydroxyethyl ethylenediamine, (e) lauryl dimethylaminoacetic acid betaine and (f) coconut oil alkyl betaine, an alkali and water. The composition is adjusted to pH equal to or higher than pK1 of uric acid with the alkali to solubilize uric acid. A method for stably solubilizing uric acid in an aqueous cosmetic composition is also disclosed.
Inventors
- 👤 Yoshio Tsujino
- 👤 Akiko Ogata
- 👤 Kazuyo Tomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:09
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/494; A61K8/4953; A61K2800/00; A61K2800/40; A61K2800/52; A61Q17/00; A61Q17/04; A61Q5/00; A61Q5/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
105 words
An aqueous cosmetic composition containing uric acid in a stably solubilized state which comprises uric acid, 0.01 to 1.3% by weight of one or more amphoteric surfactants selected from the group consisting of (a) lauric acid amide propyl betaine, (b) alkyl carboxymethyl hydroxyethyl imidazolinium betaine, (c) coconut oil fatty acid amide propylmethylaminoacetic acid betaine, (d) sodium salt of coconut oil fatty acid acyl carboxymethyl hydroxyethyl ethylenediamine, (e) lauryl dimethylaminoacetic acid betaine and (f) coconut oil alkyl betaine, an alkali and water, and said composition being adjusted to pH equal to or higher than pK 1 of uric acid with the alkali to solubilize uric acid.
Claim 2
Dependent Claim
105 words
An aqueous cosmetic composition containing uric acid in a stably solubilized state which comprises uric acid, 0.01 to 1.3% by weight of one or more amphoteric surfactants selected from the group consisting of (a) lauric acid amide propyl betaine, (b) alkyl carboxymethyl hydroxyethyl imidazolinium betaine, (c) coconut oil fatty acid amide propylmethylaminoacetic acid betaine, (d) sodium salt of coconut oil fatty acid acyl carboxymethyl hydroxyethyl ethylenediamine, (e) lauryl dimethylaminoacetic acid betaine and (f) coconut oil alkyl betaine, an alkali and water, and said composition being adjusted to pH equal to or higher than pK 1 of uric acid with the alkali to solubilize uric acid.
Claim 3
Dependent Claim
16 words
A composition according to claim 1, wherein the composition is adjusted to pH 6.5 to 9.5.
Claim 4
Dependent Claim
18 words
A composition according to claim 1, wherein the composition contains 0.01 to 2.5% by weight of uric acid.
Claim 5
Dependent Claim
12 words
A composition according to claim 1, wherein the alkali is an amine.
Claim 6
Independent Claim
15 words
A method for stably solubilizing uric acid in an aqueous cosmetic composition comprising uric acid,
Claim 7
Independent Claim
15 words
A method for stably solubilizing uric acid in an aqueous cosmetic composition comprising uric acid,
Claim 8
Dependent Claim
90 words
01 to 1.3% by weight of one or more amphoteric surfactants selected from the group consisting of (a) lauric acid amide propyl betaine, (b) alkyl carboxymethyl hydroxyethyl imidazolinium betaine, (c) coconut oil fatty acid amide propylmethylaminoacetic acid betaine, (d) sodium salt of coconut oil fatty acid acyl carboxymethyl hydroxyethyl ethylenediamine, (e) lauryl dimethylaminoacetic acid betaine and (f) coconut oil alkyl betaine, an alkali and water, said method comprising adjusting pH of the composition equal to or higher than pK 1 of uric acid with an alkali to solubilize uric acid.
Claim 9
Dependent Claim
90 words
01 to 1.3% by weight of one or more amphoteric surfactants selected from the group consisting of (a) lauric acid amide propyl betaine, (b) alkyl carboxymethyl hydroxyethyl imidazolinium betaine, (c) coconut oil fatty acid amide propylmethylaminoacetic acid betaine, (d) sodium salt of coconut oil fatty acid acyl carboxymethyl hydroxyethyl ethylenediamine, (e) lauryl dimethylaminoacetic acid betaine and (f) coconut oil alkyl betaine, an alkali and water, said method comprising adjusting pH of the composition equal to or higher than pK 1 of uric acid with an alkali to solubilize uric acid.
Claim 10
Dependent Claim
16 words
A method according to claim 5, wherein the composition is adjusted to pH 6.5 to 9.5.
Claim 11
Dependent Claim
18 words
A method according to claim 5, wherein the composition containing 0.01 to 2.5% by weight of uric acid.
Claim 12
Dependent Claim
12 words
A method according to claim 5, wherein the alkali is an amine.
References Cited (Backward Citations)
JPS61118312A
Cited
JPS61183204A
Cited
US4961925A
Cited
JPH01275516A
Cited
JPH01275511A
Cited
EP0716846A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-09 | 2002-05-11 | 2002-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-09 | 2006-05-11 | 2006-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-09 | 2010-05-11 | 2010-11-10 | $7700.00 | Window Closed / Lapsed |