Patent ID: 8404077

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 an aldehyde ALD2 of formula (V b), an aldehyde ALD3 of Formula (V c) and an aromatic aldehyde: 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 organomethoxysilane OS selected from the group consisting of an organotrimethoxysilane, an organodimethoxymethylsilane and a combination thereof d) at least one tin catalyst Z in the form of a dialkyltin(IV) compound, e) 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 a range of 0.2 to 0.8, (ii) a ratio V2 between a number of methoxy groups of the organomethoxysilane OS and a number of isocyanate groups is in a range of 0.2 to 0.7, and (iii) a ratio V3 between a number of tin atoms from the tin catalyst Z and a number of isocyanate groups is in a range of 0.002 to 0.006.