Patent US5229124A successfully refreshed from Google Patents.
US5229124A
Expired / Lapsed
US
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Microbicides immobilized in water soluble thermoplastic resins and aqueous dispersions of microbicides prepared therefrom
Assignee: Rohm and Haas Chemicals LLC
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Filing: 1991-09-20
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Granted: 1993-07-20
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Expires: 2011-09-20
Abstract
Abstract Solid solutions comprise a water-soluble thermoplastic resin and a microbicide dissolved therein. These solutions may be added to a rigid thermoplastic resin composition to impart biocidal characteristics thereto. If the microbicide is water-insoluble, the solid solutions may be used to prepare stable dispersions of the microbicide. The solutions also provide for slow release of a microbicide or as a vehicle for providing microbicide to an aqueous solution.
Inventors
- 👤 Nuno M. Rei
- 👤 Lawrence P. Grant
- 👤 Roger G. Hamel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:04
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0058; A; A01; A01N; A01N25/00; A01N25/08; A01N25/10; A01N25/34; C08K5/59
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
158 words
A solid, melt-blended solution consisting essentially of a microbicide dissolved in a carrier resin that is a copolymer of vinyl alcohol and (alkyleneoxy) acrylate and is soluble in water to at least about 1 gm. per 100 ml. of water at 25° C., said solid solution being useful as a melt-processable additive to a primary rigid, non-plasticized, water-insoluble thermoplastic resin composition to impart biocidal activity thereto, said solid solution containing said microbicide at a level that is at least about 20 times higher than the normal end-use microbicide concentration in a primary rigid, non-plasticized, water-insoluble thermoplastic resin composition, said water-soluble thermoplastic carrier resin enabling said microbicide to impart improved antimicrobial activity to a rigid, non-plasticized, water-insoluble primary thermoplastic resin composition relative to the ability of water-insoluble thermoplastic carrier resins, at similar levels in a rigid, non-plasticized water-insoluble primary thermoplastic resin composition, to enable said microbicide to impart antimicrobial activity to a rigid, non-plasticized, water-insoluble primary thermoplastic resin composition.
Claim 2
Dependent Claim
158 words
A solid, melt-blended solution consisting essentially of a microbicide dissolved in a carrier resin that is a copolymer of vinyl alcohol and (alkyleneoxy) acrylate and is soluble in water to at least about 1 gm. per 100 ml. of water at 25° C., said solid solution being useful as a melt-processable additive to a primary rigid, non-plasticized, water-insoluble thermoplastic resin composition to impart biocidal activity thereto, said solid solution containing said microbicide at a level that is at least about 20 times higher than the normal end-use microbicide concentration in a primary rigid, non-plasticized, water-insoluble thermoplastic resin composition, said water-soluble thermoplastic carrier resin enabling said microbicide to impart improved antimicrobial activity to a rigid, non-plasticized, water-insoluble primary thermoplastic resin composition relative to the ability of water-insoluble thermoplastic carrier resins, at similar levels in a rigid, non-plasticized water-insoluble primary thermoplastic resin composition, to enable said microbicide to impart antimicrobial activity to a rigid, non-plasticized, water-insoluble primary thermoplastic resin composition.
Claim 3
Dependent Claim
31 words
A solid solution according to claim 1 wherein said microbicide is present at a level at least about 100 times the normal end-use level in a rigid primary thermoplastic resin composition.
Claim 4
Dependent Claim
14 words
A solid solution according to claim 1 wherein said microbicide is a water-insoluble microbicide.
Claim 5
Dependent Claim
16 words
A solid solution according to claim 1 wherein said microbicide is a phenoxarsine or a phenarsazine.
Claim 6
Dependent Claim
12 words
A solid solution according to claim 4 wherein said microbicide is 10,10'-oxybisphenoxarsine.
Claim 7
Dependent Claim
23 words
A solid solution according to claim 4 wherein said phenoxarsine or phenarsazine comprises at least about 1 wt. % of said solid solution.
Claim 8
Dependent Claim
23 words
A solid solution according to claim 4, wherein said phenoxarsine or phenarsazine comprises at least about 5 wt. % of said solid solution.
Claim 9
Dependent Claim
14 words
A solid solution according to claim 1 wherein said microbicide is an anti-microbial maleimide.
Claim 10
Dependent Claim
15 words
A solid solution according to claim 1 wherein said microbicide is an anti-microbial isoindole dicarboximide.
Claim 11
Dependent Claim
16 words
A solid solution according to claim 1 wherein said microbicide is an anti-microbial halogenated aryl alkanol.
Claim 12
Dependent Claim
14 words
A solid solution according to claim 1 wherein said microbicide is an anti-microbial isothiazolinone.
Claim 13
Dependent Claim
81 words
A solid, melt-blended solution consisting essentially of a water-insoluble microbicide dissolved in a carrier resin that is a copolymer of vinyl alcohol and (alkyleneoxy) acrylate and is soluble in water to at least about 1 gm. per 100 ml. of water at 25° C., said microbicide comprising at least about 0.01 wt. % of said solid solution, said solid solution when placed in an aqueous medium forming a dispersion of said water-insoluble microbicide in which said carrier resin stabilizes said dispersion.
Claim 14
Dependent Claim
81 words
A solid, melt-blended solution consisting essentially of a water-insoluble microbicide dissolved in a carrier resin that is a copolymer of vinyl alcohol and (alkyleneoxy) acrylate and is soluble in water to at least about 1 gm. per 100 ml. of water at 25° C., said microbicide comprising at least about 0.01 wt. % of said solid solution, said solid solution when placed in an aqueous medium forming a dispersion of said water-insoluble microbicide in which said carrier resin stabilizes said dispersion.
Claim 15
Dependent Claim
16 words
A solid solution according to claim 12 wherein said microbicide is a phenoxarsine or a phenarsazine.
Claim 16
Dependent Claim
12 words
A solid solution according to claim 12 wherein said microbicide is 10,10'-oxybisphenoxarsine.
Claim 17
Dependent Claim
14 words
A solid solution according to claim 12 wherein said microbicide is an anti-microbial maleimide.
Claim 18
Dependent Claim
15 words
A solid solution according to claim 12 wherein said microbicide is an anti-microbial isoindole dicarboximide.
Claim 19
Dependent Claim
16 words
A solid solution according to claim 12 wherein said microbicide is an anti-microbial halogenated aryl alkanol.
Claim 20
Dependent Claim
14 words
A solid solution according to claim 12 wherein said microbicide is an anti-microbial isothiazolinone.
Claim 21
Dependent Claim
21 words
A solid solution according to claim 12 wherein said microbicide comprises at least about 1 wt. % of said solid solution.
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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) | 1996-07-19 | 1997-01-18 | 1997-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-19 | 2001-01-18 | 2001-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-19 | 2005-01-18 | 2005-07-20 | $7700.00 | Window Closed / Lapsed |