US4940576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair conditioning preparation
Assignee: CPPD Inc C/O CT Corp SYSTEM 208 LASALLE STREET CHICAGO ILLINOIS A CORP OF
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Filing: 1987-06-26
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Granted: 1990-07-10
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Expires: 2007-06-26
Abstract
Abstract The invention relates to an aqueous clear single-phase liquid hair rinse conditioner. On dilution of the conditioner during use there is deposited on the hair a lyotropic liquid crystal phase formed by interaction between an ionised polymer and an ionic surfactant of opposite charge. There is also present in the composition a clarifying agent in order to maintain the composition in the form of a clear single-phase solution prior to dilution. The polymer-surfactant complex in the form of a liquid crystal phase deposited from the hair conditioner of the invention is more effective to improve the ease of wet combing of the hair than a complex not in the form of a liquid crystal.
Inventors
- 👤 Michael F. Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:10
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/0295; A61K8/18; A61K8/19; A61K8/20; A61K8/30; A61K8/40; A61K8/41; A61K8/416; A61K8/46; A61K8/463; A61K8/466; A61K8/72; A61K8/73; A61K8/731; A61K8/81; A61K8/8141; A61K8/8147; A61K8/817; A61K8/84; A61K8/88; A61Q; A61Q5/00; A61Q5/12; A61K2800/00; A61K2800/40; A61K2800/54; A61K2800/542; A61K2800/5424; A61K2800/5426
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
An aqueous clear single-phase liquid hair rinse conditioner composition comprising a water-soluble ionized polymer and an ionic surfactant of opposite charge which interact with each other to form a complex which separates out upon dilution of the composition as a lyotropic liquid crystal phase, the composition also comprising an effective amount of a clarifying agent to dissociate or dissolve the complex in order to maintain the composition in the form of a clear single-phase solution prior to dilution, the amount of the ionic surfactant being 0.9 to 2.0S moles where S Moles is the amount of the surfactant required to completely neutralize the charges on the polymer, the combined weight of the ionized polymer and the ionic surfactant being about 0.1 to about 5% by weight of the composition, said composition comprising not more than about 5% by weight of neutral surfactant, and said polymer being selected from the group consisting of poly(methacrylic acid), poly(styrene sulfonate) and copolymers of ethylene and maleic acid.
Claim 2
Dependent Claim
163 words
An aqueous clear single-phase liquid hair rinse conditioner composition comprising a water-soluble ionized polymer and an ionic surfactant of opposite charge which interact with each other to form a complex which separates out upon dilution of the composition as a lyotropic liquid crystal phase, the composition also comprising an effective amount of a clarifying agent to dissociate or dissolve the complex in order to maintain the composition in the form of a clear single-phase solution prior to dilution, the amount of the ionic surfactant being 0.9 to 2.0S moles where S Moles is the amount of the surfactant required to completely neutralize the charges on the polymer, the combined weight of the ionized polymer and the ionic surfactant being about 0.1 to about 5% by weight of the composition, said composition comprising not more than about 5% by weight of neutral surfactant, and said polymer being selected from the group consisting of poly(methacrylic acid), poly(styrene sulfonate) and copolymers of ethylene and maleic acid.
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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) | 1993-07-09 | 1994-01-08 | 1994-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-09 | 1998-01-08 | 1998-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-09 | 2002-01-08 | 2002-07-10 | $7700.00 | Window Closed / Lapsed |