A PROCESS FOR MAKING POLYUREA PARTICLES

A method for providing urea particles in a solvent medium, said method comprising at least the steps of: providing at least one polyisocyanate component dissolved in a first solvent; providing at least one isocyanate-reactive polyamine component dissolved in a second solvent; providing at least one...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WOUTTERS, STEVE ANDRE, LINDSAY, CHRIS IAN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A method for providing urea particles in a solvent medium, said method comprising at least the steps of: providing at least one polyisocyanate component dissolved in a first solvent; providing at least one isocyanate-reactive polyamine component dissolved in a second solvent; providing at least one isocyanate-reactive monoamine, optionally dissolved in a third solvent; combining and reacting said isocyanate-reactive monoamine optionally dissolved in said third solvent with said polyisocyanate dissolved in said first solvent, thereby providing an urea-modified polyisocyanate dissolved in said first solvent and said optionally third solvent, and then combining and reacting said urea-modified polyisocyanate dissolved in said first solvent and said optionally third solvent with said polyamine component dissolved in said second solvent.