METHOD FOR CONTINUOUSLY PRODUCING AQUEOUS POLYURETHANE DISPERSION

PROBLEM TO BE SOLVED: To provide a method for continuously producing an aqueous polyurethane dispersion comprising at least one aliphatic and/or aromatic isocyanate. SOLUTION: This method for continuously producing the aqueous polyurethane dispersion comprising the aliphatic and/or aromatic isocyana...

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Bibliographische Detailangaben
Hauptverfasser:	KLINKSIEK BERND, OBENDORF LARS, GERTZMANN ROLF, IRLE CHRISTOPH DR
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES GENERAL PROCESSES OF COMPOUNDING 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 POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for continuously producing an aqueous polyurethane dispersion comprising at least one aliphatic and/or aromatic isocyanate. SOLUTION: This method for continuously producing the aqueous polyurethane dispersion comprising the aliphatic and/or aromatic isocyanates comprises (a) a process for pouring and mixing a polyurethane prepolymer having hydrophilic groups and/or latent hydrophilic groups with water by the use of a mixing nozzle to produce the aqueous pre-emulsion, and (b) a process for homogenizing the aqueous pre-emulsion of the process (a) to form the emulsion. The coating comprising the aqueous polyurethane dispersion produced by the method can be used to coat a substrate. COPYRIGHT: (C)2006,JPO&NCIPI