Claims
- 1. A stable microbicide composition comprising:
- (a) 0.5 to 35 wt %, based on the weight of the composition, of a water soluble 3-isothiazolone;
- (b) 0.2 to 30 wt %, based on the weight of the composition, of a metal nitrate selected from the group consisting of lithium nitrate; sodium nitrate; potassium nitrate; magnesium nitrate; calcium nitrate; and ammonium nitrate;
- (c) 0.01 to 35 wt %, based on the weight of the composition, of iodic acid, periodic acid, or their salts; and
- (d) water;
- wherein the weight ratio of (b) to (a) is 25:1 to 1:25, and the composition is precipitate free.
- 2. The composition of claim 1 wherein the 3-isothiazolone compound is selected from the group consisting of 5-chloro-2-methyl-3-isothiazolone; 2-methyl-3-isothiazolone; 2-ethyl-3-isothiazolone; 5-chloro-2-ethyl-3-isothiazolone; 4,5-dichloro-2-methyl-3-isothiazolone; and mixtures thereof.
- 3. The composition of claim 1 wherein the iodic acid salt or periodic acid salt is selected from the group consisting of lithium iodate; sodium iodate; potassium iodate; ammonium iodate; lithium periodate; sodium periodate; potassium periodate; and ammonium periodate.
- 4. The composition of claim 1 wherein the 3-isothiazolone compound is present in an amount of 5 to 35 wt %, based on the weight of the composition.
- 5. The composition of claim 1 wherein the 3-isothiazolone is present in an amount of 5 to 25 wt %, based on the weight of the composition, the metal nitrate is present in an amount of 1 to 25 wt %, based on the weight of the composition, and the iodic acid, periodic acid, or their salts is present in an amount of 0.05 to 10 wt %, based on the weight of the composition.
- 6. The composition of claim 5 wherein the iodic acid, periodic acid, or their salts is selected from the group consisting of iodic acid, sodium iodate, potassium iodate, and sodium periodate.
- 7. A method of preventing precipitate formation in a microbicide composition comprising the step of adding 0.2 to 30 wt %, based on the weight of the composition, of a metal nitrate selected from the group consisting of lithium nitrate; sodium nitrate; potassium nitrate; magnesium nitrate; calcium nitrate; and ammonium nitrate to a stabilized 3-isothiazolone composition comprising 0.5 to 35 wt %, based on the weight of the composition, of a water soluble 3-isothiazolone compound; 0.01 to 35 wt %, based on the weight of the composition, of iodic acid, periodic acid, or their salts; and water; wherein the weight ratio of metal nitrate to 3-isothiazolone compound is 25:1 to 1:25.
- 8. The method of claim 7 wherein the 3-isothiazolone compound is selected from the group consisting of: 5-chloro-2-methyl-3-isothiazolone; 2-methyl-3-isothiazolone; 2-ethyl-3-isothiazolone; 5-chloro-2-ethyl-3-isothiazolone; 4,5-dichloro-2-methyl-3-isothiazolone; and mixtures thereof.
- 9. The method of claim 7 wherein the iodic acid salt or periodic acid salt is selected from the group consisting of: lithium iodate; sodium iodate; potassium iodate; ammonium iodate; lithium periodate; sodium periodate; potassium periodate; and ammonium periodate.
- 10. A method of controlling or inhibiting the growth of microorganisms in a locus comprising introducing to the locus the composition of claim 1.
- 11. The method of claim 10 wherein the locus is selected from the group consisting of: cooling towers; air washers; boilers; mineral slurries; wastewater treatment; ornamental fountains; reverse osmosis filtration; ultrafiltration; ballast water; evaporative condensers; heat exchangers; pulp and paper processing fluids; plastics; emulsions and dispersions; paints; latexes; coatings; and metal working fluids.
Parent Case Info
This application claims benefit of Provisional Appln 60/063,350 filed Oct. 28, 1997.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
5-170608 |
Jul 1993 |
JPX |