초록 ▼

There is disclosed as an article a water-permeable membrane containing sealed therein a solid particulate microbiocidal composition which is useful in aqueous systems, wherein the composition is produced from a microbiocidal compound having relatively low water solubility or a combination thereof wi

There is disclosed as an article a water-permeable membrane containing sealed therein a solid particulate microbiocidal composition which is useful in aqueous systems, wherein the composition is produced from a microbiocidal compound having relatively low water solubility or a combination thereof with other microbiocidal compounds having relatively high water solubility to give a combination generally characterized by low water solubility in admixture with an inert, finely-divided water-insoluble solid carrier material. Especially useful are microbiocidal 3-isothiazolones and 2-substituted-1,2-benzisothiazolones having relatively low water solubility, and metal salt stabilized derivatives thereof, admixed with silicaceous diatomaceous earth. These articles afford protracted controlled release of active ingredient and also afford a safer form of the active ingredient heretofore known to be relatively irritating to the skin of man when at high concentration in aqueous solution.

대표청구항 ▼

An article useful for storing, handling, transporting, and providing a microbiocidal compound at a controlled rate in a method for controlling living microorganisms in an aqueous system comprising (a) a flexible, water-permeable membrane having a film thickness sufficient to maintain the integrity t

An article useful for storing, handling, transporting, and providing a microbiocidal compound at a controlled rate in a method for controlling living microorganisms in an aqueous system comprising (a) a flexible, water-permeable membrane having a film thickness sufficient to maintain the integrity thereof when sealed and sufficient water vapor permeability to permit diffusion of water therethrough and containing sealed therein (b) a particulate solid microbiocidal composition useful in aqueous systems comprising: (i) about 0.1-70 weight %, based on total weight of said composition, of at least one water-soluble microbiocidal compound having a relatively low water solubility of less than about 1000 ppm or a combination thereof with one or more other microbiocidal compounds to give a combination characterized by a relatively low water solubility of less than about 1000 ppm; and (ii) about 99.9-30 weight %, based on total weight of said composition, of an inert, finely-divided water-insoluble solid carrier material.