US3870795A
Expired / Lapsed
US
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Stabilization of solutions of 3-isothiazolones employing certain metal nitrates and nitrites
Assignee: Rohm and Haas Co
•
Filing: 1973-02-28
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Granted: 1975-03-11
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Expires: 1993-02-28
Abstract
Abstract Solution of 3-isothiazolones are stabilized against chemical decomposition of the isothiazolone by adding thereto a metal nitrate or a metal nitrite.
Inventors
- 👤 George A Miller
- 👤 Ernest D Weiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:43
CPC Classifications
C; C07; C07D; C07D275/00; C07D275/02; C07D275/03; A; A01; A01N; A01N25/00; A01N25/22; A01N43/00; A01N43/72; A01N43/80
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
27 words
A METHOD OF STABILIZING AN AQUEOUS OR POLAR ORGANIC SOLVENT SOLUTION CONTAINING A MICROBIOCIDAL 3-ISOTHIAZOLONE AGAINST CHEMICAL DECOMPOSITION OF THE 3-ISOTHIAZOLONE WHEREIN THE 3-ISOTHIAZOLONE HAS THE FORMULA
Claim 2
Independent Claim
27 words
A METHOD OF STABILIZING AN AQUEOUS OR POLAR ORGANIC SOLVENT SOLUTION CONTAINING A MICROBIOCIDAL 3-ISOTHIAZOLONE AGAINST CHEMICAL DECOMPOSITION OF THE 3-ISOTHIAZOLONE WHEREIN THE 3-ISOTHIAZOLONE HAS THE FORMULA
Claim 3
Independent Claim
27 words
A method of stabilizing an aqueous or polar organic solvent solution containing a microbiocidal 3-isothiazolone against chemical decomposition of the 3-isothiazolone wherein the 3-isothiazolone has the formula
Claim 4
Independent Claim
27 words
A method of stabilizing an aqueous or polar organic solvent solution containing a microbiocidal 3-isothiazolone against chemical decomposition of the 3-isothiazolone wherein the 3-isothiazolone has the formula
Claim 5
Dependent Claim
12 words
The method of claim 1 wherein the solution is an aqueous solution.
Claim 6
Dependent Claim
25 words
The method of claim 1 wherein the metal salt is added in an amount of about 1 to about 30% by weight of the solution.
Claim 7
Dependent Claim
12 words
The method of claim 3 wherein the metal salt is calcium nitrate.
Claim 8
Dependent Claim
12 words
The method of claim 3 wherein the metal salt is magnesium nitrate.
Claim 9
Dependent Claim
10 words
The method of claim 3 wherein the 3-isothiazolone is 2-n-octyl-3-isothiazolone.
Claim 10
Dependent Claim
17 words
The method of claim 3 wherein the 3-isothiazolone is 5-chloro-2-methyl-3-isothiazolone or a mixture of 5-chloro-2-methyl-3-isothiazolone and 2-methyl-3-isothiazolone.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |