Microcapsule and process for production thereof

Details Microcapsule and process for production thereof Microcapsule and process for production thereof

B - Operations, Transporting

01

J

B01J 13/08 (2006.01) A01N 25/28 (2006.01) A01N 37/34 (2006.01) A01N 47/22 (2006.01) A01N 57/12 (2006.01) A01N 57/16 (2006.01) C09B 67/08 (2006.01) C09D 11/02 (2006.01) B41M 5/165 (2006.01) B41M 5/28 (2006.01) B41M 5/30 (2006.01)

Patent

CA 2328826

A microcapsule (or microencapsulated product) having a uniform and smooth coating film and also an excellent performance of gradually liberating the content material is produced at a good particle size distribution while suppressing the occurrence of isolated or aggregated film material, aggregated microcapsules and isolated core material. The production process includes: a first coating step of mixing a water-soluble cationic amino resin and an anionic surfactant in the presence of a hydrophobic core material dispersed in an aqueous medium to coat the dispersed core material with a coacervate of the cationic amino resin and the anionic surfactant; and a second coating step of adding an amino resin prepolymer into an aqueous dispersion liquid containing the coated dispersed core material and polycondensating the amino resin prepolymer to further coat the coated dispersed core material with a polycondensate of the amino resin prepolymer.

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