Use of silicon polyether block copolymers with high-molecular non-end capped polyether esters as stabilisers for production of low density polyurethane foams

摘要

Producing polyurethane foam with a density of less than 24 kg/m 3, comprises using a silicone polyether block copolymer comprising a polyorganosiloxane with at least a polyether, where at least one not end capped polyether is bonded to the polyorganosiloxane, which has a molecular weight of = 4500 g/mole. An independent claim is also included for the polyurethane foam obtained by the above mentioned method.