DELAYED CURE MICRO-ENCAPSULATED CATALYSTS

Controlled release polyurea microcapsules can be prepared from a combination of polyisocyanates using emulsion polymerization. Encapsulated catalysts prepared using the polyurea microcapsules can be used to control the cure rate of coatings and sealants. Des microcapsules de polyurée à libération co...

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Bibliographische Detailangaben
Hauptverfasser:	ANDERSON, Lawrence G, HARTMAN, Madeline
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES INKS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS
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Zusammenfassung:	Controlled release polyurea microcapsules can be prepared from a combination of polyisocyanates using emulsion polymerization. Encapsulated catalysts prepared using the polyurea microcapsules can be used to control the cure rate of coatings and sealants. Des microcapsules de polyurée à libération contrôlée peuvent être préparées à partir d'une combinaison de polyisocyanates à l'aide d'une polymérisation en émulsion. Des catalyseurs encapsulés préparés à l'aide des microcapsules de polyurée peuvent être utilisés pour contrôler le taux de durcissement de revêtements et d'agents d'étanchéité.