MDI based prepolymers and lacquers with improved properties containing the same, process for their preparation and their use

Preparation of polyurethane prepolymer (I) comprises reacting hydroxyl functional copolymers of vinyl aromatic compound and allylalcohol with methylenediphenyldiisocyanate, where the equivalent ratio of hydroxyl to isocyanate group is 1:>=2. Independent claims are included for: (1) prepolymers ob...

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Bibliographische Detailangaben
Hauptverfasser:	KOEHLER, BURKHARD, BAEKER, THOMAS, 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:	Preparation of polyurethane prepolymer (I) comprises reacting hydroxyl functional copolymers of vinyl aromatic compound and allylalcohol with methylenediphenyldiisocyanate, where the equivalent ratio of hydroxyl to isocyanate group is 1:>=2. Independent claims are included for: (1) prepolymers obtained by the above method; (2) a moisture-hardening lacquers comprising the prepolymer; (3) a method for the production of coatings comprising applying the mositure-hardening lacquer and hardening at 0-80[deg]C; (4) coatings obtained by the above method; and (5) a substrate coated with the coatings.