FIELD: polymer materials.
SUBSTANCE: invention relates to moisture-hardenable polyurethane compositions, namely to those containing at least one polyurethane prepolymer with isocyanate groups obtained from at least one polyisocyanate and at least one polyol. In addition to prepolymer, composition further contains at least one polyaldimine prepared from at least one polyamine with primary aliphatic amino groups and at least one aldehyde of general formula: 
wherein Y1 and Y2, independently from each other, represent alkyl, aryl, or arylalkyl group, which is optionally substituted, may contains heteroatoms and/or unsaturated fragments, or Y1 and Y2 together form carbocyclic or heterocyclic ring, which is composed of 5-8, preferably 6 atoms and optionally contains one or two unsaturated bonds; and R1 represents either linear or branched C11-C30-alkyl chain, optionally with at least one heteroatom, especially with at least one ether oxygen atom, or linear or branched C11-C30-alkyl chain with one or numerous unsaturated bonds, or R1 represents group 
or 
in which R2 represents linear, branched, or cyclic hydrocarbon chain with 2-16 carbon atoms, optionally incorporating at least one heteroatom, especially at least one ether oxygen atom, or linear, branched, or cyclic C2-C16-hydrocarbon chain with one or numerous unsaturated bonds; and R3 represents linear, branched, or cyclic hydrocarbon chain with 1-8 carbon atoms. Invention describes methods for preparing such compositions and polyaldimine. Compositions can be used as glues, sealing formulations, coatings, or floorings hardening without unpleasant smell and suitable to seal layers inside buildings or to join structural members in vehicle interiors.
EFFECT: extended assortment of hardenable liquid polymer compositions.
24 cl, 4 tbl, 14 ex
