Patent ID: 8431674

Claim:
Alkoxysilane group-containing polyurethanes of the general formula (I), wherein PES is a residue of a polyester polyol with 2-3 OH groups, reduced by the OH groups, at least 90 wt.% of which (based on acid and alcohols) was produced from adipic acid and a mixture of at least 20 wt.% each (based on the mixture) of butanediol or hexanediol and neopentyl glycol, having a number-average molecular weight (Mn) of between 500 g/mol and 2500 g/mol, c =1 or 2, X represents the same or different alkoxy or alkyl residues, which may also be bridged, provided that at least one alkoxy residue is present on each Si atom, Q is a difunctional, linear or branched, aliphatic residue.