POLYUREA COMPOSITION

A two-component coating system, containing (A) a polyisocyanate prepolymer having polyether groups bonded through allophanate groups, and (B) a mixture of polyamines in which (B1) at least 75 mol % of all NH groups originate from an amino-functional polyaspartic acid ester of the general formula (I)...

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Bibliographische Detailangaben
Hauptverfasser:	AUS DER WIESCHEN, ANDREAS, SCHMIDT, AXEL, HOMANN, MALTE
Format:	Patent
Sprache:	eng ; fre ; ger
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:	A two-component coating system, containing (A) a polyisocyanate prepolymer having polyether groups bonded through allophanate groups, and (B) a mixture of polyamines in which (B1) at least 75 mol % of all NH groups originate from an amino-functional polyaspartic acid ester of the general formula (I): wherein, X represents an n-valent organic radical which is obtained by removing the primary amino groups from an n-valent polyamine; R1 and R2 independently of one another, represent organic radicals that are inert towards isocyanate groups under the reaction conditions; and n represents an integer of at least 2; and (B2) not more than 25 mol % of all NH groups originate from a cycloaliphatic diamine or aromatic diamine, and also (C) optionally a further polyisocyanate.