US4307109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biocidal chelate
Assignee: Angus Chemical Co
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Filing: 1980-05-08
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Granted: 1981-12-22
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Expires: 2000-05-08
Abstract
Abstract The biocidal activity of N-(2-methyl-1-naphthyl)-maleimide is vastly improved by chelating it with an amine wherein each free hydrogen on each amino group has been replaced by the groups --(CH 2 ) n COOY wherein n represents 1 or 2 and each Y represents hydrogen, ammonium or an alkali metal cation.
Inventors
- 👤 Francis W. Arbir
- 👤 William J. Rizoff
- 👤 Frank C. Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:12
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/18; A01N37/32; Y; Y10; Y10S; Y10S424/00; Y10S424/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
The method of protecting a substrate against bacterial and fungal attack upon exposure to an environment containing common fungi or bacteria, comprising incorporating into said substrate or surface-coating said substrate with a biocidally effective amount of a chelate, said chelate comprising 1 part of N-(2-methyl-1-naphthyl)-maleimide and 1-100 parts by weight of ethylenediamine or diethylenetriamine wherein each free hydrogen on each amino group has been replaced by the moiety --(CH 2 ) n COOY wherein n is 1 or 2 and Y is hydrogen, ammonium or an alkali metal cation.
Claim 2
Independent Claim
89 words
The method of protecting a substrate against bacterial and fungal attack upon exposure to an environment containing common fungi or bacteria, comprising incorporating into said substrate or surface-coating said substrate with a biocidally effective amount of a chelate, said chelate comprising 1 part of N-(2-methyl-1-naphthyl)-maleimide and 1-100 parts by weight of ethylenediamine or diethylenetriamine wherein each free hydrogen on each amino group has been replaced by the moiety --(CH 2 ) n COOY wherein n is 1 or 2 and Y is hydrogen, ammonium or an alkali metal cation.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein said amine is present at a ratio of between 4 and 10 weight parts per part of N-(2-methyl-1-naphthyl)-maleimide.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein said amine is diethylenetriamine pentaacetic acid.
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein said amine is ethylenediamine tetraacetic acid.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein said amine is tetrasodium ethylenediamine tetraacetic acid.
Claim 7
Dependent Claim
64 words
A biocide for use in preventing the growth of micro-organisms, comprising one part by weight of N-(2-methyl-1-naphthyl)-maleimide and between 1 and 100 parts by weight of ethylenediamine or diethylenetriamine wherein each free hydrogen on each amino group has been replaced by the moiety --(CH 2 ) n COOY wherein n is 1 or 2 and Y is hydrogen, ammonium or an alkali metal cation.
Claim 8
Dependent Claim
64 words
A biocide for use in preventing the growth of micro-organisms, comprising one part by weight of N-(2-methyl-1-naphthyl)-maleimide and between 1 and 100 parts by weight of ethylenediamine or diethylenetriamine wherein each free hydrogen on each amino group has been replaced by the moiety --(CH 2 ) n COOY wherein n is 1 or 2 and Y is hydrogen, ammonium or an alkali metal cation.
Claim 9
Dependent Claim
19 words
A biocide according to claim 6 wherein said amine is present in an amount of 4-10 parts by weight.
Claim 10
Dependent Claim
12 words
The biocide of claim 7 wherein said amine is diethylenetriamine pentaacetic acid.
Claim 11
Dependent Claim
12 words
The biocide of claim 7 wherein said amine is ethylenediamine tetraacetic acid.
Claim 12
Dependent Claim
13 words
The biocide of claim 7 wherein said amine is tetrasodium ethylenediamine tetraacetic acid.
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) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |