Dispersión acuosa de poliuretanourea bloqueada

Dispersión acuosa de poliuretanourea bloqueada que puede obtenerse haciendo reaccionar al menos a) un poliisocianato, b) un agente de bloqueo para grupos isocianato, c) una poliamina que tenga al menos un grupo carboxilo y/o carboxilato, d) agua, comprendiendo el agente de bloqueo b), o consistiendo...

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Bibliographische Detailangaben
Hauptverfasser:	MICHAELIS, Thomas, GRABLOWITZ, Hans-Georg, HEBESTREIT, Tanja, GIPPERICH, Ingo, FELLER, Thomas
Format:	Patent
Sprache:	spa
Schlagworte:	ADHESIVES 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 POLISHES THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	Dispersión acuosa de poliuretanourea bloqueada que puede obtenerse haciendo reaccionar al menos a) un poliisocianato, b) un agente de bloqueo para grupos isocianato, c) una poliamina que tenga al menos un grupo carboxilo y/o carboxilato, d) agua, comprendiendo el agente de bloqueo b), o consistiendo en, 3,5-dimetilpirazol y empleándose en una fracción de >= 70 % en moles con respecto a los grupos isocianato del componente a). The present invention relates to an aqueous blocked polyurethaneurea dispersion which is obtainable by reacting at least one polyisocyanate, one blocking agent for isocyanate groups, one polyamine having at least one carboxyl and/or carboxylate group, and water. Additionally provided by the invention are a coating composition comprising the aqueous blocked polyurethaneurea dispersion, the use of the aqueous blocked polyurethaneurea dispersion or of the coating composition for producing a coating, a coating obtainable using the aqueous blocked polyurethaneurea dispersion or the coating composition, and a method for producing the aqueous blocked polyurethaneurea dispersion.