Coating processes – Particles – flakes – or granules coated or encapsulated – Solid encapsulation process utilizing an emulsion or...
Patent
1987-05-22
1988-07-26
Beck, Shrive P.
Coating processes
Particles, flakes, or granules coated or encapsulated
Solid encapsulation process utilizing an emulsion or...
25217413, 427221, B05D 122
Patent
active
047599561
ABSTRACT:
A process is disclosed for coating particles comprising suspending the particles in a fluidized bed and introducing therein an encapsulating latex. During introduction of the latex, the fluid bed must be maintained at a temperature which is within 10.degree. C. lower to 20.degree. C. higher than the glass transition temperature of the polymer. Typical core materials include halogen and peroxygen bleaches, bleach precursors, enzymes, colorants and fabric softeners. Preferably, the latex comprises water as a carrier and a polymer with carboxyl functionality, the polymer being insoluble in water.
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Amer Gamal I.
Foster Jeffrey N.
Iovine Carmine P.
Beck Shrive P.
Farrell James J.
Honig Milton L.
Lever Brothers Company
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