US4695453A
Expired / Lapsed
US
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Thickened alcoholic antimicrobial compositions
Assignee: Henkel Corp
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Filing: 1986-04-30
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Granted: 1987-09-22
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Expires: 2006-04-30
Abstract
Abstract A thickened alcoholic antibacterial composition is provided which contains as a thickener a polymer having as the recurring structural unit an acrylamidoalkanesulfonic acid monomer or ammonium salt thereof. Methods of thickening an alcoholic antibacterial composition and methods of controlling bacteria with such compositions are also provided.
Inventors
- 👤 Francis W. Tuominen
- 👤 Helmut K. Maier
- 👤 Warren W. Howland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:52
CPC Classifications
A; A01; A01N; A01N31/00; A01N31/02; A01N25/00; A01N25/08; A01N25/10; A01N31/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
73 words
A method of controlling the growth of bacteria comprising subjecting bacteria to a bactericidally effective amount of an alcoholic antibacterial composition composed of a mixture of about 40-50% ethanol, about 20-30% isopropanol and about 0.5-2% benzyl alcohol thickened with 0.2-2% by weight of a homopolymer selected from the group consisting of (x) poly(2-acrylamido-2-methylpropane sulfonic acid) and (y) poly(ammonium 2-acrylamido-2-methylpropane sulfonate) wherein said homopolymer has a molecular weight from about 50,000 to about 5,000,000.
Claim 2
Independent Claim
73 words
A method of controlling the growth of bacteria comprising subjecting bacteria to a bactericidally effective amount of an alcoholic antibacterial composition composed of a mixture of about 40-50% ethanol, about 20-30% isopropanol and about 0.5-2% benzyl alcohol thickened with 0.2-2% by weight of a homopolymer selected from the group consisting of (x) poly(2-acrylamido-2-methylpropane sulfonic acid) and (y) poly(ammonium 2-acrylamido-2-methylpropane sulfonate) wherein said homopolymer has a molecular weight from about 50,000 to about 5,000,000.
Claim 3
Dependent Claim
14 words
A method as defined in claim 1 wherein said homopolymer is poly(2-acrylamido-2-methylpropane sulfonic acid).
Claim 4
Dependent Claim
13 words
A method as defined in claim 1 wherein said homopolymer is poly(ammonium-2-acrylamido-2-methylpropane sulfonate).
Claim 5
Dependent Claim
20 words
A method as defined in claim 1, wherein said homopolymer has a molecular weight of about 1,000,000 to about 2,000,000.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-09-21 | 1991-03-23 | 1991-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-21 | 1995-03-23 | 1995-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-21 | 1999-03-23 | 1999-09-22 | $7700.00 | Window Closed / Lapsed |