PROCESS FOR ENCAPSULATING PARTICLES USING POLYMER LATEX

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 DEG C lower to a temperature higher than the glass transition...

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Bibliographische Detailangaben
Hauptverfasser:	GAMAL IBRAHIM AMER, CARMINE P. IOVINE, JEFFREY NORRIS FOSTER
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON COMPOUNDS THEREOF DETERGENT COMPOSITIONS DETERGENTS FATTY ACIDS THEREFROM GENERAL PROCESSES OF COMPOUNDING INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL RECOVERY OF GLYCEROL RESIN SOAPS SOAP OR SOAP-MAKING THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING USE OF SINGLE SUBSTANCES AS DETERGENTS WORKING-UP
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Beschreibung
Zusammenfassung:	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 DEG 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.