Patent ID: 8497311

Claim:
A foamable composition, comprising siloxane(s) (A) of the formula V—(NHC(O)R 1 R 2 ) p-m-n (NHC(O)R 1 R 4 [SiR 2 O] a —SiR 2 R 4 R 1 H) m (NHC(O)NR 5 2 ) n (I) where V is a p-valent hydrocarbon radical optionally containing heteroatoms, R each individually is a monovalent, optionally substituted hydrocarbon radical, R 1 each individually is —O—, —S— or —NR 3 —, R 2 each individually is hydrogen or a monovalent, optionally substituted hydrocarbon radical, R 3 each individually is hydrogen or a monovalent, optionally substituted hydrocarbon radical, R 4 each individually is a divalent, optionally substituted hydrocarbon radical optionally interrupted by heteroatoms, R 5 each individually is hydrogen or an optionally substituted hydrocarbon radical, a is an integer not less than 1, p is an integer not less than 2, m is an integer not less than 1, n is an integer not less than 1, with the proviso that p is not less than m+n; (B) polyisocyanates; and (G) trimerization catalysts.