초록 ▼

An improved article of a membrane permeable to water and impermeable to microbiocidal compounds containing therein a solid particulate microbiocidal composition which is useful in aqueous systems, wherein the composition is produced from aqueous solutions of a water-soluble microbiocidal compound ab

An improved article of a membrane permeable to water and impermeable to microbiocidal compounds containing therein a solid particulate microbiocidal composition which is useful in aqueous systems, wherein the composition is produced from aqueous solutions of a water-soluble microbiocidal compound absorbed in an inert, finely-divided water-insoluble solid carrier. Especially useful are microbiocidal 3-isothiazolones and 2-substituted-1,2-benzisothiazolones, and metal salt stabilized derivatives thereof, absorbed into a silicaceous diatomaceous earth in a sealed, perforated membrane, for example, a perforated bag, produced from polyethylene. These articles afford a form, which is safer for handling.

대표청구항 ▼

In a method for safening the use of microbiocidal compositions which comprises placing said compositions in a sealed porous membrane article prepared from a hydrophobic material having a thickness of from about 0.5 mil to about 10 mils and having a pore size smaller than the effective particle size

In a method for safening the use of microbiocidal compositions which comprises placing said compositions in a sealed porous membrane article prepared from a hydrophobic material having a thickness of from about 0.5 mil to about 10 mils and having a pore size smaller than the effective particle size of the solid microbiocidal composition contained sealed therein; the particulate solid microbiocidal composition comprising: (i) an aqueous solution containing about 0.1 to 70 weight %, based on total weight of said composition, of at least one water-soluble microbiocidal compound blended with and absorbed into; (ii) about 99.9 to 30 weight %, based on total weight of said composition, of an inert, finely-divided water-insoluble solid carrier material: the improvement wherein the porous membrane is selected from hydrophobic film-forming materials having a solubility parameter less than 12.5.