US4675347A
Expired / Lapsed
US
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Antimicrobial latex composition
Assignee: Unitika Ltd
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Filing: 1984-10-24
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Granted: 1987-06-23
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Expires: 2004-10-24
Abstract
Abstract An antimicrobial latex composition is disclosed. The antimicrobial latex composition comprises (1) at least one cationic latex component selected from a cationic natural rubber latex and a cationic synthetic polymer latex and (2) a cationic antimicrobial agent incorporated in said cationic latex (1). The resulting composition is antimicrobial latex compositions suitable for use in the manufacture of medical devices and appliances, sanitary products, equipment and furnishings for use in food manufacture and processing, and so forth, in particular antimicrobial latex compositions retaining good stability over a long period of storage.
Inventors
- 👤 Masatsugu Mochizuki
- 👤 Yoshihiro Umemura
- 👤 Izumi Sakammoto
- 👤 Kunihiko Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:53
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/04; A61L31/048; A61L31/049; A61L29/00; A61L29/04; A61L29/041; A61L29/042; A61L29/14; A61L29/16; A61L31/14; A61L31/16; C; C08; C08J; C08J5/00; C08J5/02; C08K; C08K5/00; C08K5/0008; C08K5/0058; A61L2300/00; A61L2300/20; A61L2300/204; A61L2300/206; A61L2300/208; A61L2300/40; A61L2300/404; C08J2307/00; C08J2307/02; C08J2321/00; C08J2321/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
38 words
An antimicrobial latex composition which comprises (1) at least one cationic latex component selected from a cationic natural rubber latex and a cationic synthetic polymer latex and (2) a cationic antimicrobial agent incorporated in said cationic latex (1).
Claim 2
Dependent Claim
38 words
An antimicrobial latex composition which comprises (1) at least one cationic latex component selected from a cationic natural rubber latex and a cationic synthetic polymer latex and (2) a cationic antimicrobial agent incorporated in said cationic latex (1).
Claim 3
Dependent Claim
19 words
The composition of Claim 1, wherein the cationic antimicrobial agent (2) is a biguanide compound or a salt thereof.
Claim 4
Dependent Claim
21 words
The composition of Claim 2, wherein the biguanide compound is selected from the group consisting of 1,6-di(4-chlorophenylbiguanido)hexane, diaminohexylbiguanide, 1,6-di(aminohexylbiguanido)hexane and polyhexamethylenebiguanide.
Claim 5
Dependent Claim
19 words
The composition of Claim 1, wherein the cationic antimicrobial agent (2) is an acridine compound or a salt thereof.
Claim 6
Dependent Claim
20 words
The composition of Claim 4, wherein the acridine compound is selected from the group consisting of 9-aminoacridine, 3,6-diaminoacridine and 6,9-diamino-2-ethoxyacridine.
Claim 7
Dependent Claim
17 words
The composition of Claim 1, wherein the cationic antimicrobial agent (2) is a quaternary ammonium salt compound.
Claim 8
Dependent Claim
34 words
The composition of Claim 6, wherein the quaternary ammonium salt compound is selected from the group consisting of a benzyldimethyldodecylammonium salt, a benzyldimethyltetradecylammonium salt, a benzyldimethylhexadecylammonium salt, a trimethyltetradecylammonium salt and a benzethonium salt.
Claim 9
Dependent Claim
18 words
The composition of Claim 1, wherein the cationic antimicrobial agent (2) is a sparingly water-soluble cationic antimicrobial agent.
Claim 10
Dependent Claim
41 words
The composition of Claim 8, wherein the sparingly water-soluble cationic antimicrobial agent is selected from the group consisting of the hydrochloride, acetate or sulfate of 1,6-di(4-chlorophenylbiguanido)hexane, the lactate or hydrochloride of 6,9-diamino-2ethoxyacridine, 3,6-diaminoacridine sulfate, benzyldimethyltetradecylammonium iodide, benzyldimethylhexadecylammonium phosphate and benzethonium iodide.
Claim 11
Dependent Claim
33 words
The composition of Claim 1, wherein the amount of the cationic antimicrobial agent (2) present is about -0.01 to about 50% by weight based on the latex solids content of the latex (1).
Claim 12
Dependent Claim
12 words
A shaped article produced from the antimicrobial latex composition of Claim 1.
Claim 13
Dependent Claim
13 words
The shaped article of Claim 11, in the form of a urethral catheter.
Claim 14
Independent Claim
74 words
A method of manufacturing a shaped article comprising dipping a dipping former in a dipping fluid containing a cationic natural rubber or synthetic polymer latex and a cationic antimicrobial agent to thereby cause the dipping fluid components to precipitate on the surface of the dipping former and drying the precipitate and repeating the dipping and drying steps one to a large number of times followed by removing the thus-shaped article from the dipping former.
Claim 15
Independent Claim
74 words
A method of manufacturing a shaped article comprising dipping a dipping former in a dipping fluid containing a cationic natural rubber or synthetic polymer latex and a cationic antimicrobial agent to thereby cause the dipping fluid components to precipitate on the surface of the dipping former and drying the precipitate and repeating the dipping and drying steps one to a large number of times followed by removing the thus-shaped article from the dipping former.
Claim 16
Dependent Claim
13 words
The method of Claim 13, wherein the shaped article is a urethral catheter.
References Cited (Backward Citations)
US3325436A
Cited
US3695921A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
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