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US 6,211,213 B1Granted
Stable microbicide formulation
AssigneeRohm and Haas Company
InventorBeverly Jean El A'mma
Life of this patent
Estimating the term…
Abstract
Stable microbicidal compositions containing a 3-isothiazolone compound, organic oxidants, copper salts and water are disclosed. Also disclosed are methods of stabilizing 3-isothiazolone compositions.
Claims10
A stable microbicide composition comprising:
- (a) 0.1 to 5 wt %, based on the weight of the composition, of a water soluble 3-isothiazolone;
- (b) 0.0001 to 0.3 wt %, based on the weight of the composition, of one or more organic oxidants;
- (c) 0.0001 to 0.02 wt %, based on the weight of the composition, of a cupric ion in the form of a copper salt;
- and
- (d) water;
- wherein the composition is free of brown precipitate for at least 12 weeks at 40° C.
3 more elements
A method of stabilizing a microbicide composition comprising the step of adding 0.0001 to 0.3 wt %, based on the weight of the composition, of an organic oxidant;
- and 0.0001 to 0.02 wt %, based on the weight of the composition, of a cupric ion in the form of a copper salt to a 3-isothiazolone composition comprising 0.1 to 5 wt %, based on the weight of the composition, of a water soluble 3-isothiazolone compound;
- and water.
Dependencies are inferred from the claim text.