Patent ID: 8329770

Claim:
A foamable mixture (M) comprising: A) organically modified organopolysiloxanes (S) which are prepared from A1) organopolysiloxanes (S1) having at least one group selected from among an aminoalkyl group and a hydroxyalkyl group per molecule, A2) alkoxysilanes (V2) having NCO-reactive groups and, A3) polyisocyanates (J) having at least 2 isocyanate groups per molecule and which on average have at least one urethane or urea unit and also a group of the general formula [1] —SiR 1 z (OR 2 ) 3-z [1] where R 1 is an alkyl, cycloalkyl, alkenyl or aryl radical having 1-20 carbon atoms, R 2 is hydrogen, an alkyl radical which has 1-10 carbon atoms and in which up to 4 nonadjacent —CH 2 — groups can be replaced by an —O— group or an acyl radical having 1-10 carbon atoms, and z is 0, 1 or 2, per molecule, and B) a blowing agent (T).