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US5376366A
Expired / Lapsed
US
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Composition and process for forming isopropyl alcohol gel with water-soluble vinyl polymer neutralizing agent
Assignee: Individual
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Filing: 1992-11-12
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Granted: 1994-12-27
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Expires: 2012-11-12
Abstract
Abstract An isopropyl alcohol gel having use as a rubbing composition and having antiseptic properties. The isopropyl alcohol gel of the present invention comprises a polymer, water, isopropyl alcohol and a polymer neutralizing agent. The polymer is dispersed in water to create a thick phase. The preferred polymer is a carbomer resin that forms a slightly gelatinous mass through hydration of the polymer. The selected amount of isopropyl alcohol is added by dispersion to the polymer-water phase. The mixture is allowed enough time to fully hydrate. A neutralizing agent is thereafter added to neutralize the activity of the polymer. The neutralizing agent is preferably tetrahydroxypropyl ethylenediamine. The resulting product is in homogenous heavy clear gel form.
Inventors
- 👤 John Petchul
- 👤 Rosemary Gaudreault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:09
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K8/18; A61K8/30; A61K8/33; A61K8/34; A61K8/40; A61K8/41; A61K8/72; A61K8/81; A61K8/8141; A61K8/8147; A61Q; A61Q17/00; A61Q17/005; A61Q19/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
139 words
A process for preparing a gelatinous composition of matter having a pH above 8.00 and a viscosity of approximately 100,000 cps for external application, said process including the steps of: preparing a water-soluble vinyl polymer-water phase by dispersing a water-soluble vinyl polymer in water, said water-soluble vinyl polymer being between 0.5 and 2.5 percent by weight and said water being between 1.0 and 55.0 percent by weight, the ratio of water to polymer being approximately 25:1; adding an alcohol by dispersion to the water-soluble vinyl polymer-water phase, said alcohol being 45.0-99.0 percent by weight, the ratio of alcohol to said water-soluble vinyl polymer-water phase being approximately 2:1; allowing enough time so that said water-soluble vinyl polymer becomes hydrated; adding an agent to neutralize said water-soluble vinyl polymer, said agent being between 3.0-5.0 percent by weight; and mixing the composition.
Claim 2
Dependent Claim
139 words
A process for preparing a gelatinous composition of matter having a pH above 8.00 and a viscosity of approximately 100,000 cps for external application, said process including the steps of: preparing a water-soluble vinyl polymer-water phase by dispersing a water-soluble vinyl polymer in water, said water-soluble vinyl polymer being between 0.5 and 2.5 percent by weight and said water being between 1.0 and 55.0 percent by weight, the ratio of water to polymer being approximately 25:1; adding an alcohol by dispersion to the water-soluble vinyl polymer-water phase, said alcohol being 45.0-99.0 percent by weight, the ratio of alcohol to said water-soluble vinyl polymer-water phase being approximately 2:1; allowing enough time so that said water-soluble vinyl polymer becomes hydrated; adding an agent to neutralize said water-soluble vinyl polymer, said agent being between 3.0-5.0 percent by weight; and mixing the composition.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein said alcohol is isopropyl alcohol.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein said addition of said alcohol is by dispersion.
Claim 5
Dependent Claim
16 words
The process of claim 1 wherein the time for hydrating is between eight and nine hours.
Claim 6
Dependent Claim
12 words
The process of claim 1 wherein said neutralizing agent is tetrahydroxypropyl ethylenediamine.
Claim 7
Dependent Claim
21 words
The process of claim 1 wherein said mixing of said composition is affected until a homogenous heavy clear gel is formed.
Claim 8
Dependent Claim
17 words
The process of claim 1 wherein between 1.0 and 55.0 percent by weight of water is used.
Claim 9
Dependent Claim
17 words
The process of claim 7 wherein between 45.0 and 99.0 percent by weight of alcohol is used.
Claim 10
Dependent Claim
17 words
The process of claim 8 wherein between 0.5 and 2.5 percent by weight of polymer is used.
Claim 11
Dependent Claim
18 words
The process of claim 9 wherein between 3.0 and 5.0 percent by weight of neutralizing agent is used.
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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) | 1997-12-26 | 1998-06-27 | 1998-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-26 | 2002-06-27 | 2002-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-26 | 2006-06-27 | 2006-12-27 | $7700.00 | Window Closed / Lapsed |