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US4647601A
Expired / Lapsed
US
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Self-sanitizing epoxy resins and preparation thereof
Assignee: Interface Research Corp
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Filing: 1985-05-21
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Granted: 1987-03-03
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Expires: 2005-05-21
Abstract
Abstract The present invention relates to self-sanitizing epoxy resin and to an additive which is incorporated therein so that the epoxy product or film is made self-sanitizing. The additive is an alkyl phosphate derivative with the following structure: <IMAGE> where R is an alkyl group of from 8 to 18 carbon atoms, R1 is an alkyl group or a hydroxy alkyl group, and R2 is selected from the group consisting of hydrogen and an alkyl group of from 6 to 18 carbon atoms, with at least one R2 group being the alkyl group. The additive is highly effective against both gram-negative and gram-positive bacteria and is also highly effective against eukaryotic microorganisms such as yeasts, molds and fungi. In addition to the unique and unexpected microbiocidal properties of the self-sanitizing epoxy, the microbiocidal activity remains in the epoxy product or film over long periods of time.
Inventors
- 👤 Robert H. McIntosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:25
CPC Classifications
D; D06; D06M; D06M16/00; A; A01; A01N; A01N33/00; A01N33/02; A01N33/04; A01N33/08; A01N57/00; A01N57/10; A01N57/12; C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0058; C08K5/49; C08K5/51; C08K5/52; C08K5/521; D06M13/00; D06M13/244; D06M13/282; D06M13/292
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
A self-sanitizing epoxy resin including a homogeneously distributed alkyl phosphate derivative therein, said alkyl phosphate having the following formula: ##STR7## wherein R is an alkyl group of from 8 to 18 carbon atoms, R 1 is an alkyl group or a hydroxy alkyl group, and R 2 is a hydrogen or an alkyl group of from 6 to 18 carbon atoms with at least one of the R 2 groups being the alkyl group; and said alkyl phosphate derivative is present in the epoxy resin at a concentration between approximately 0.1% and 15% by weight.
Claim 2
Dependent Claim
95 words
A self-sanitizing epoxy resin including a homogeneously distributed alkyl phosphate derivative therein, said alkyl phosphate having the following formula: ##STR7## wherein R is an alkyl group of from 8 to 18 carbon atoms, R 1 is an alkyl group or a hydroxy alkyl group, and R 2 is a hydrogen or an alkyl group of from 6 to 18 carbon atoms with at least one of the R 2 groups being the alkyl group; and said alkyl phosphate derivative is present in the epoxy resin at a concentration between approximately 0.1% and 15% by weight.
Claim 3
Dependent Claim
28 words
The self-sanitizing epoxy resin of claim 1, wherein said alkyl phosphate derivative is present in said epoxy resin at a concentration between approximately 1% and 10% by weight.
Claim 4
Dependent Claim
22 words
The self-sanitizing epoxy resin of claim 1, wherein said R 1 group of said alkyl phosphate derivative is a hydroxy alkyl group.
Claim 5
Dependent Claim
25 words
The self-sanitizing epoxy resin of claim 1, wherein said R 2 group of said alkyl phosphate derivative is an alkyl group of 8 carbon atoms.
Claim 6
Dependent Claim
18 words
The self-sanitizing epoxy resin of claim 1 wherein the alkyl phosphate derivative is dodecyl bis(hydroxyethyl) octyl ammonium phosphate.
Claim 7
Dependent Claim
20 words
The self-sanitizing epoxy resin of claim 5 wherein the alkyl phosphate derivative is present at a concentration of approximately 2%.
Claim 8
Dependent Claim
27 words
The self-sanitizing epoxy resin of claim 1, wherein said epoxy resin is selected from the group consisting of epichlorohydrin/bisphenol-A, glycidated novolacs, epoxylated novolacs and cycloaliphatic epoxy resins.
Claim 9
Dependent Claim
27 words
The self-sanitizing epoxy resin of claim 6, wherein said epoxy resin is selected from the group consisting of epichlorohydrin/bisphenol-A, glycidated novolacs, epoxylated novolacs and cycloaliphatic epoxy resins.
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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) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |