Avoidance of precipitation in 3-isothiazolone formulations
AssigneeRohm and Haas Company
InventorPhilippa Clarke
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Abstract
Compositions comprising optionally substituted 3-isothiazolone derivative compounds, a metal nitrate, cupric (Cu.sup.2+) ion in ppm amounts in the form of an inorganic copper salt and water are described for preventing the formation of unsightly precipitations in these compositions during storage.
Claims16
A composition comprising
- a) from 0.1 to 20 wt % of an optionally substituted 3-isothiazolone;
- b) from 0.1 to 25 wt % of a metal nitrate;
- c) from 1.0 to 100 ppm of cupric (Cu.sup.2+) ion in the form of an inorganic copper salt;
- and
- d) water.
Method of reducing or preventing the formation of precipitate in a formulation containing from 0.1 to 20 wt % of 3-isothiazolone and from 0.1 to 25 wt % of metal nitrate, comprising incorporating therewith from 1 to 100 ppm of Cu.sup.2+ ion.
Method of using Cu.sup.2+ ion to reduce or prevent the formation of precipitate in a formulation containing from 0.1 to 20 wt % of a 3-isothiazolone and from 0.1 to 25 wt % of a metal nitrate.
Dependencies are inferred from the claim text.