US4655815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Admixtures of 2-bromo-2-bromomethylglutaronitrile and a formaldehyde donor
Assignee: ECC SPECIALTY CHEMICALS Inc
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Filing: 1985-03-27
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Granted: 1987-04-07
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Expires: 2005-03-27
Abstract
Abstract The present invention is directed to a synergistic antimicrobial admixture comprising 2-bromo-2-bromomethylglutaronitrile and a formaldehyde donor.
Inventors
- 👤 John A. Jakubowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:30
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/34; A01N43/00; A01N43/90
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
30 words
A synergistic antimicrobial admixture comprising an antimicrobial effective amount of: (a) 2-bromo-2-bromoethylglutaronitrile and (b) a formaldehyde donor, wherein the weight ratio of (a):(b) ranges from about 1:2.5 to about 5:1.
Claim 2
Dependent Claim
30 words
A synergistic antimicrobial admixture comprising an antimicrobial effective amount of: (a) 2-bromo-2-bromoethylglutaronitrile and (b) a formaldehyde donor, wherein the weight ratio of (a):(b) ranges from about 1:2.5 to about 5:1.
Claim 3
Dependent Claim
10 words
The admixture of claim 1, further comprising an inert carrier.
Claim 4
Dependent Claim
28 words
The admixture of claim 1, wherein said formaldehyde donor is selected from the group consisting of 2-[(hydroxymethyl)amino]-2-methyl-propanol; 2-hydroxyethyl-2-nitro-1,3-propanediol; mixtures of 5-hydroxymethoxymethyl-1-aza-3,7 dioxabicyclo(3.3.0)octane, 5-hydroxymethyl-1-aza-3,7-dioxabicyclo(3.3.0)octane and 5-hydroxypoly(methyleneoxy)methyl-1-aza-3,7-dioxabicyclo(3.3.0)octane; and mixtures thereof.
Claim 5
Independent Claim
38 words
A method of inhibiting microbial growth, comprising contacting the microbial growth with an effective amount of an admixture comprising: (a) 2-bromo-2-bromomethylglutaronitrile and (b) a formaldehyde donor, wherein the weight ratio of (a):(b) ranges from about 1:2.5 to 5:1.
Claim 6
Independent Claim
38 words
A method of inhibiting microbial growth, comprising contacting the microbial growth with an effective amount of an admixture comprising: (a) 2-bromo-2-bromomethylglutaronitrile and (b) a formaldehyde donor, wherein the weight ratio of (a):(b) ranges from about 1:2.5 to 5:1.
Claim 7
Dependent Claim
18 words
The method of claim 4, wherein said microbial growth is contacted with said admixture as a single composition.
Claim 8
Dependent Claim
19 words
The method of claim 4, wherein said microbial growth is contacted separately with said 2-bromo-2-bromomethylglutaronitrile and said formaldehyde donor.
Claim 9
Dependent Claim
49 words
The method of claim 4, wherein said microbial growth is selected from the group consisting of Pseudomonas stutzer; Pseudomonas fluorescens, Pseudomonas aeruginosa, Saccharomyces cerevisiae, Aspergillus niger, Penicillium funiculosum, Candida sp., Fusarium sp., Cephalosporium sp., Trichoderma viride, Cladosporium herbarum, Aspergillus fumigatus, Pullularia pullulans, Ceratocystis pilifera, Cephaloascus fragrans and mixtures thereof.
Claim 10
Dependent Claim
13 words
The method of claim 4, wherein said admixture further comprises an inert carrier.
Claim 11
Dependent Claim
28 words
The method of claim 4, wherein said formaldehyde donor is selected from the group consisting of 2[(hydroxymethyl)amino]-2-methyl-propanol; 2-hydroxyethyl-2-nitro-1,3-propanediol; mixtures of 5-hydroxymethoxymethyl-1-aza-3,7-dioxabicyclo(3.3.0)octane; 5-hydroxymethyl-1-aza 3,7-dioxabicyclo(3.3.0)octane and 5-hydroxypoly(methyleneoxy)methyl-1-aza-3,7-dioxabicyclo(3.3.0)octane; and mixtures thereof.
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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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |