| abstract |
The invention relates to foamable preparations containing (A) siloxanes of formula (I), wherein the radicals and indices which have the meaning as cited in claim 1, under the proviso that at least one radical R3 in formula (I) has the meaning of optionally substituted hydrocarbon radical and has at least one hydroxyl group and/or thiol group, and (B) polyisocyanates, silicon-containing polyurethane foams, in particular shaping foams, with low density. The invention also relates to methods for the production thereof. |