Chemical method of making a suspension, emulsion or dispersion of pyrithione particles
AssigneeArch Chemicals, Inc.
InventorsSaeed M. Mohseni, Charles W. Kaufman, David C. Beaty, John J. Jardas, George Polson
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Abstract
A method for producing a suspension, emulsion or dispersion of de-agglomerated particles (advantageously submicron-sized particles) of pyrithione salts comprising contacting agglomerated pyrithione salt particles with a de-agglomerating agent to produce the desired de-agglomerated pyrithione salt particles. Also disclosed is a method for making de-agglomerated submicron-sized particles of pyrithione salts comprising a heating step. Also disclosed are the particles made by the above methods and compositions comprising the particles and a base medium.
Claims14
A method for producing a suspension, emulsion, or dispersion of de-agglomerated particles of pyrithione salts, comprising:
- creating particles, said particles comprising agglomerated pyrithione salt particles;
- contacting said agglomerated pyrithione salt particles with a de-agglomerating agent selected from the group consisting of electrolytes, surfactants, dispersants, and combinations thereof, in the presence of sonic energy, to produce said suspension, emulsion, or dispersion of de-agglomerated particles of pyrithione salts, and wherein said sonic energy has a frequency of from about 20 Hz to about 900 kHz.
A method for producing a suspension, emulsion, or dispersion of de-agglomerated particles of pyrithione salts, comprising:
- creating particles, said particles comprising agglomerated pyrithione salt particles;
- contacting said agglomerated pyrithione salt particles with a de-agglomerating agent, in the presence of sonic energy, to produce said suspension, emulsion, or dispersion of de-agglomerated particles of pyrithione salts, wherein said de-agglomerating agent is selected from the group consisting of electrolytes, surfactants, dispersants, and combinations thereof, and wherein said sonic energy has an energy level of from about 20 to about 5000 Watts.
Dependencies are inferred from the claim text.