Patent ID: 8343304

Claim:
A single-component, moisture-curing composition, comprising: a) at least one polyurethane polymer PUP formed from a reaction of at least one aromatic or aliphatic polyisocyanate and at least one polyol, wherein a content of free isocyanate groups of the polyurethane polymer PUP is 0.5 to 15% by weight; b) at least one aldimine A, formed from a condensation reaction between at least one polyamine B with at least two primary aliphatic amino groups, and at least one aldehyde selected from the group consisting of aldehyde ALD2 of formula (V b) and aldehyde ALD3 of Formula (V c): wherein R 1 and R 2 either independently of one another in each case stands for a monovalent hydrocarbon radical with 1 to 12 C atoms, or together stand for a divalent hydrocarbon radical with 4 to 12 C atoms, which is part of an optionally substituted, carbocyclic ring with 5 to 8 C atoms; R 3 stands for a hydrogen atom or for an alkyl-, cycloalkyl-, arylalkyl radical or an alkoxycarbonyl radical with 1 to 12 C atoms; R 4 stands for a hydrocarbon radical with 1 to 30 C atoms, which optionally contains ether oxygen atoms; R 5 stands for a hydrogen atom, or a linear or branched alkyl radical with 1 to 30 C atoms, optionally with cyclic proportions and optionally with at least one heteroatom, or a singly or multiply unsaturated, linear or branched hydrocarbon radical with 5 to 30 C atoms, or an optionally substituted, aromatic or heteroaromatic 5- or 6-membered ring; c) at least one organoalkoxysilane OS selected from the group consisting of N-(trimethoxysilylmethyl)-O-methyl-carbamate, N-(dimethoxymethylsilylmethyl)-O-methyl-carbamate, (methacrvloxymethyl)trimethoxysilane, (methacryloxymethyl)triethoxysilane, an α-aminosilane, an α-silane-functional polymer, and a combination thereof; d) at least one organic Brønsted acid S; provided that in the composition, (i) a ratio V1 between a number of aldimino groups and a number of isocyanate groups is in the range of 0.2 to 0.8, and (ii) a ratio V2 between a number of alkoxy groups of the organoalkoxysilane OS and a number of isocyanate groups is in the range of 0.1 to 0.5.