Abstract: The present disclosure is generally directed to a mold inhibiting composition. The mold inhibiting composition can be used to treat various different substrates, including building material products, such as facing layers for wallboard. In general, any suitable paper product may be treated with the composition. The composition contains a mold inhibiting agent in combination with a defoamer. The mold inhibiting agent may comprise a pyrithione. The defoamer, on the other hand, may comprise an oil based defoamer containing metal oxide particles, such as silica particles. The mold inhibiting composition can be combined with a water repellent and applied to a substrate without excessive amounts of foam or froth being formed. The defoamer is selected so as to not interfere with the resulting water absorption properties of the product.

Abstract: The present disclosure is generally directed to a mold inhibiting composition. The mold inhibiting composition can be used to treat various different substrates, including building material products, such as facing layers for wallboard. In general, any suitable paper product may be treated with the composition. The composition contains a mold inhibiting agent in combination with a defoamer. The mold inhibiting agent may comprise a pyrithione. The defoamer, on the other hand, may comprise an oil based defoamer containing metal oxide particles, such as silica particles. The mold inhibiting composition can be combined with a water repellent and applied to a substrate without excessive amounts of foam or froth being formed. The defoamer is selected so as to not interfere with the resulting water absorption properties of the product.

Abstract: The present disclosure is generally directed to a mold inhibiting composition. The mold inhibiting composition can be used to treat various different substrates, including building material products, such as facing layers for wallboard. In general, any suitable paper product may be treated with the composition. The composition contains a mold inhibiting agent in combination with a defoamer. The mold inhibiting agent may comprise a pyrithione. The defoamer, on the other hand, may comprise an oil based defoamer containing metal oxide particles, such as silica particles. The mold inhibiting composition can be combined with a water repellent and applied to a substrate without excessive amounts of foam or froth being formed. The defoamer is selected so as to not interfere with the resulting water absorption properties of the product.

Abstract: The present invention is directed to a biocidal composition comprising a blend of one or more pyrithione compounds, and one or more pyrrole compounds of Formula I wherein said biocidal composition is copper free or low copper content.

Abstract: The present invention is directed to a biocidal composition comprising a blend of one or more pyrithione compounds, and one or more pyrrole compounds of Formula I wherein said biocidal composition is copper free or low copper content.

Abstract: A biocidal composition is disclosed comprising composite particles, each of said composite particles containing a shell and a core, said core comprising a metal or a metal-containing compound wherein the metal is a moiety selected from the group consisting of zinc, copper, bismuth, silver, zirconium, and combinations thereof said shell comprising a pyrithione adduct comprising the reaction product of pyrithione with a portion of said core metal or metal compound. In one aspect, an anti-fouling composition is disclosed comprising (a) an anti-soft-fouling effective amount of copper pyrithione; and (b) an anti-hard-fouling effective amount of a copper-containing salt, or oxide or hydroxide thereof. The present invention also relates to a method of making an anti-fouling composition comprising particles of copper pyrithione and a copper-containing salt that is effective against hard-fouling and soft-fouling organisms.

Abstract: The present invention is directed to a biocidal composition comprising a blend of one or more pyrithione compounds, and one or more pyrrole compounds of Formula I wherein said biocidal composition is copper free or low copper content.

Abstract: The present invention is directed to a biocidal composition comprising a blend of one or more pyrithione compounds, and one or more pyrrole compounds of Formula I wherein said biocidal composition is copper free or low copper content.

Abstract: A biocidal composition is disclosed comprising composite particles, each of the composite particles containing a shell and a core, the core comprising a metal or a metal-containing compound wherein the metal is a moiety selected from the group consisting of zinc, copper, bismuth, silver, zirconium, and combinations thereof, the shell comprising a pyrithione adduct comprising the reaction product of pyrithione with a portion of the core metal or metal compound. In one aspect, an anti-fouling composition is disclosed comprising (a) an anti-soft-fouling effective amount of copper pyrithione; and (b) an anti-hard-fouling effective amount of a copper-containing salt, or oxide or hydroxide thereof. The present invention also relates to a method of making an antifouling composition comprising particles of copper pyrithione and a copper-containing salt that is effective against hard-fouling and soft-fouling organisms.

Abstract: The present invention is directed to a biocidal composition comprising a blend of one or more pyrithione compounds, and one or more pyrrole compounds of Formula I wherein said biocidal composition is copper free or low copper content.

Abstract: The present invention is directed to a biocidal composition comprising a blend of one or more pyrithione compounds, and one or more pyrrole compounds of Formula I wherein said biocidal composition is copper free or low copper content.

Abstract: Disclosed herein is a composition comprising a non-dusting copper pyrithione dispersion comprising small solid particles of copper pyrithione dispersed in a liquid dispersant, said solid particles having a particle size within a range of from about 0.1 to about 10 microns and a median particle size of from 0.2 to less than 0.5 microns. The dispersion is suitably employed as an antifouling additive for marine paints without risking worker exposure to copper pyrithione dust. Paints containing the small particle copper pyrithione exhibit improved antifouling performance in cold water, as compared to paint containing larger particle copper pyrithione.

Abstract: The present invention describes a composition for stabilizing a paint or paint base composition against viscosity change, gelation and agglomeration during formulation and storage. Illustratively, an antifouling paint or paint base composition is disclosed that contains a hydrolysable acrylate resin such as copper acrylate, zinc acrylate, or silyl acrylate, a metal salt of pyrithione, cuprous oxide, and a primary stabilizing agent selected from the group consisting of benzoic acid, hydroxypyridine, metal salts of benzoic acid, and hydroxypyridine, with the proviso that said composition is essentially free of 2-hydroxypyridine N-oxide, and is also essentially free of the sodium, zinc and copper salts of 2-hydroxypyridine-N-oxide.

Abstract: The present invention is directed to a biocidal composition comprising a blend of one or more pyrithione compounds, and one or more pyrrole compounds of Formula I wherein said biocidal composition is copper free or low copper content.

Abstract: The present invention describes a composition for stabilizing a paint or paint base composition against viscosity change, gelation and agglomeration during formulation and storage. Illustratively, an antifouling paint or paint base composition is disclosed that contains a hydrolysable acrylate resin such as copper acrylate, zinc acrylate, or silyl acrylate, a metal salt of pyrithione, cuprous oxide, and a primary stabilizing agent selected from the group consisting of benzoic acid, hydroxypyridine, metal salts of benzoic acid, and hydroxypyridine, with the proviso that said composition is essentially free of 2-hydroxypyridine N-oxide, and is also essentially free of the sodium, zinc and copper salts of 2-hydroxypyridine-N-oxide.

Abstract: Disclosed herein is a composition comprising a non-dusting copper pyrithione dispersion comprising small solid particles of copper pyrithione dispersed in a liquid dispersant, said solid particles having a particle size within a range of from about 0.1 to about 10 microns and a median particle size of from 0.2 to less than 0.5 microns. The dispersion is suitably employed as an antifouling additive for marine paints without risking worker exposure to copper pyrithione dust. Paints containing the small particle copper pyrithione exhibit improved antifouling performance in cold water, as compared to paint containing larger particle copper pyrithione.

Abstract: Disclosed herein is a composition comprising a non-dusting copper pyrithione dispersion comprising small solid particles of copper pyrithione dispersed in a liquid dispersant, said solid particles having a particle size within a range of from about 0.1 to about 10 microns and a median particle size of less than 3 microns. The dispersion is suitably employed as an antifouling additive for marine paints without risking worker exposure to copper pyrithione dust. Paints containing the small particle copper pyrithione exhibit improved antifouling performance in cold water, as compared to paint containing larger particle copper pyrithione.

Abstract: Disclosed herein is a composition comprising a non-dusting copper pyrithione dispersion comprising small solid particles of copper pyrithione dispersed in a liquid dispersant, said solid particles having a particle size within a range of from about 0.1 to about 10 microns and a median particle size of less than 3 microns. The dispersion is suitably employed as an antifouling additive for marine paints without risking worker exposure to copper pyrithione dust. Paints containing the small particle copper pyrithione exhibit improved antifouling performance in cold water, as compared to paint containing larger particle copper pyrithione.

Abstract: The present invention is directed to a non-dusting copper pyrithione dispersion, comprising an admixture of: from about 20 to about 99 wt % of copper pyrithione; from about 0.05 to about 30 wt % of a dust-inhibiting agent selected from the group consisting of surfactants, polymer resins, binders, and combinations thereof; and from about 0.05 wt. % to about 80 wt % of a dispersant; wherein all weight percents are based on the total weight of the dispersion.

Abstract: The present invention is directed to a non-dusting copper pyrithione dispersion, comprising an admixture of: from about 20 to about 99 wt % of copper pyrithione; from about 0.05 to about 30 wt % of a dust-inhibiting agent selected from the group consisting of surfactants, polymer resins, binders, and combinations thereof; and from about 0.05 wt. % to about 80 wt % of a dispersant; wherein all weight percents are based on the total weight of the dispersion.