Patent US3192537A successfully refreshed from Google Patents.
US4777035A
Expired / Lapsed
US
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Antiperspirant composition and process
Assignee: Signal Investment and Management Co
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Filing: 1985-11-15
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Granted: 1988-10-11
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Expires: 2005-11-15
Abstract
Abstract An antiperspirant composition for roll-on application, which feels dry upon application, is prepared by encapsulating a relatively large amount of water onto a specific kind of a hydrophobic silica, and then suspending the water-loaded silica into an anhydrous liquid vehicle which has a particular antiperspirant material suspended therein.
Inventors
- 👤 Chung T. Shin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:37
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/18; A61K8/19; A61K8/25; A61K8/28; A61K2800/00; A61K2800/20; A61K2800/30; A61K2800/31; A61K2800/40; A61K2800/56; A61K2800/80; A61K2800/87; A61K2800/874
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
154 words
A stable liquid roll-on antiperspirant composition having a non-tacky dry feeling on application comprising an encapsulated aqueous component and an anhydrous antiperspirant suspension component, (a) said encapsulated aqueous component comprising droplets of an aqueous system encapsulated in a pyrogenic hydrophobic silica whose surface structure of exposed portions of said silica is largely composed of hydrocarbon groups, (b) said anhydrous antiperspirant component comprising an anhydrous oily organic liquid vehicle having suspended therein an antiperspirant effective amount of active antiperspirant material in particulate form, (c) said encapsulated aqueous component also being suspended in the anhydrous liquid vehicle of said anhydrous antiperspirant suspension component, (d) said anhydrous oily organic liquid vehicle comprising from about 20% to about 60% by weight of one or more volatile silicones based on the total weight of said composition, (e) and said composition containing from about 5% to about 50% by weight of water based on the total weight of said composition.
Claim 2
Dependent Claim
154 words
A stable liquid roll-on antiperspirant composition having a non-tacky dry feeling on application comprising an encapsulated aqueous component and an anhydrous antiperspirant suspension component, (a) said encapsulated aqueous component comprising droplets of an aqueous system encapsulated in a pyrogenic hydrophobic silica whose surface structure of exposed portions of said silica is largely composed of hydrocarbon groups, (b) said anhydrous antiperspirant component comprising an anhydrous oily organic liquid vehicle having suspended therein an antiperspirant effective amount of active antiperspirant material in particulate form, (c) said encapsulated aqueous component also being suspended in the anhydrous liquid vehicle of said anhydrous antiperspirant suspension component, (d) said anhydrous oily organic liquid vehicle comprising from about 20% to about 60% by weight of one or more volatile silicones based on the total weight of said composition, (e) and said composition containing from about 5% to about 50% by weight of water based on the total weight of said composition.
Claim 3
Dependent Claim
98 words
The composition according to claim 1, wherein said volatile silicones are pressent at a concentration in the range of from about 30% to about 50% by weight based on the total weight of the composition, the water is present in said composition at a concentration in the range of from about 10% to about 30% by weight based on the total weight of said composition and said pyrogenic hydrophobic silica is present in said composition at a concentration in the range of from about 0.1% to about 1.6% by weight based on the total weight of said composition.
Claim 4
Dependent Claim
12 words
The composition according to claim 2, wherein said volatile silicones are cyclomethicones.
Claim 5
Dependent Claim
47 words
The composition according to claim 1, wherein said hydrophobic pyrogenic silica is prepared by reacting conventional pyrogenic silica with a halo alkyl silane under conditions which cause a chemical reaction to occur with a substantial portion of the hydroxyl groups on the surface of said pyrogenic silica.
Claim 6
Dependent Claim
15 words
The composition according to claim 4, wherein said aqueous component is an aqueous oil emulsion.
Claim 7
Dependent Claim
16 words
The composition according to claim 5, wherein said aqueous oil emulsion is an aqueous solution-in-oil emulsion.
Claim 8
Dependent Claim
20 words
The composition according to claim 6, wherein said aqueous solution of said emulsion also has dissolved therein active antiperspirant material.
Claim 9
Dependent Claim
15 words
The composition according to claim 5, wherein said aqueous oil emulsion is a water-in-oil emulsion.
Claim 10
Dependent Claim
12 words
The composition according to claim 4, wherein said aqueous component is water.
Claim 11
Dependent Claim
14 words
The composition according to claim 4, wherein said aqueous component is an aqueous solution.
Claim 12
Dependent Claim
18 words
The composition according to claim 10, wherein said aqueous solution is a solution of an active antiperspirant material.
Claim 13
Dependent Claim
16 words
The composition according to claim 1, also containing an emollient distributed in said anhydrous liquid vehicle.
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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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |