Patent ID: 8317912

Claim:
An antimicrobial composition comprising (a) from about 15 ppm to about 50 ppm of at least one isothiazolin-3-one, (b) from about 15 ppm to about 50 ppm of a pyrithione salt or pyrithione acid, (c) from about 35 ppm to about 135 ppm of at least one zinc compound selected from the group consisting of zinc salts, zinc oxide, zinc hydroxide, and combinations thereof, and (d) a surfactant selected from the group consisting of (i) an anionic surfactant having a sulfate or sulfonate moiety attached to a straight or branched chain containing from about 10 to about 18 atoms at the backbone of the chain, (ii) an anionic surfactant being an alkylaryl sulfonic acid or salt thereof wherein the alkyl portion contains from about 10 to about 18 carbon atoms, and the aryl portion contains a benzyl or substituted benzyl group, and combinations thereof.