Method for deactivating 1,2-benzisothiazolin-3-one in a latex
AssigneeRohm and Haas Company
InventorsPatrick E. Hartnett, Ethan C. Glor, Jeffrey S. Millman
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Abstract
The present invention is a method comprising the step of contacting a latex containing from 100 ppm to 2000 ppm of 1,2-benzisothiazolin-3-one with an effective amount of hydrogen peroxide to reduce the concentration of the 1,2-benzisothiazolin-3-one to less than 50 ppm. The method is useful for providing a way to reduce BIT to safe levels prior to combining the latex with a finally formulated product.
Claims8
A method comprising the step of contacting a water-borne composition comprising a dispersion of polymer particles and from 100 ppm to 2000 ppm of 1,2-benzisothiazolin-3-one, based on the weight of the polymer particles, with an effective amount of hydrogen peroxide to reduce the concentration of the 1,2-benzisothiazolin-3-one to less than 50 ppm.
Dependencies are inferred from the claim text.