Patent ID: 7674840

Claim:
An isocyanate-free moisture-curable foamable mixture comprising (A) one or more isocyanate-free, alkoxysilane-terminated prepolymers (A) which bear at least one silane end group of the formula [1], where X is O and Y is NH or where X is NH and Y is NR 3 , R 1 is an alkyl, alkenyl or aryl radical having 1-10 carbon atoms, R 2 is an alkyl radical having 1-2 carbon atoms or an -oxyalkyl alkyl radical having a total of 2-10 carbon atoms, R 3 is a hydrogen atom, an alkyl, cycloalkyl, alkenyl or aryl radical having 1-10 carbon atoms or a —CH 2 —SiR 1 z (OR 2 ) 3-z group and z is 0 or 1, with the proviso that at least one of the two groups X and Y is NH, and (B) at least one blowing agent.