WÄSSRIGE POLYURETHAN-DISPERSIONEN AUF BASIS ALLOPHAT-MODIFIZIERTER POLYISOCYANATE

Aqueous polyurethane (PUR) dispersions consist of a polyisocyanate component (I) and a component (II) containing active hydrogen (H), comprising polymeric polyol(s) of molecular weight 400-600 and optionally low-molecular polyol(s) and/or polyamine(s) with molecular weight < 4000, in which at lea...

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Bibliographische Detailangaben
Hauptverfasser:	MAGER, DIETER, SCHMALSTIEG, LUTZ DR, PEDAIN, JOSEF DR, JERG, RONALD-KARL DR, ARNING, EBERHARD
Format:	Patent
Sprache:	ger
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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:	Aqueous polyurethane (PUR) dispersions consist of a polyisocyanate component (I) and a component (II) containing active hydrogen (H), comprising polymeric polyol(s) of molecular weight 400-600 and optionally low-molecular polyol(s) and/or polyamine(s) with molecular weight < 4000, in which at least one of the polyols or polyamines containing (potential) ionic groups. The novelty is that the durability is improved by using (I) containing NOTLESS 5 wt.% diisocyanate of formula (IA), where R = difunctional 4-18C (cyclo)aliphatic hydrocarbon group, obtained by removing both isocyanate (NCO) groups from a diisocyanate; and R' = 1-18 C monofunctional hydrocarbon group, optionally with oxygen atom(s) in the chain.