Process for encapsulating particles using polymer latex

Details Process for encapsulating particles using polymer latex Process for encapsulating particles using polymer latex

B - Operations, Transporting

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117/45.3, 134/3.

B01J 2/16 (2006.01) B01J 2/00 (2006.01) B01J 13/04 (2006.01) C01B 11/06 (2006.01) C01B 15/00 (2006.01) C08J 3/21 (2006.01) C11D 3/37 (2006.01) C11D 17/00 (2006.01) C11D 17/06 (2006.01)

Patent

CA 1333137

A process 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°C lower to a temperature 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 below pH, but being alkali soluble.

566712

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