Abstract: The invention relates to a process for producing polyurethane foam for the thermal and acoustic insulation of engines, wherein the polyurethane foam is obtained or is obtainable by reaction of diisocyanates and/or polyisocyanates with filler-containing polyols, where the filler is preferably a reaction product of diisocyanates and/or polyisocyanates with compounds having hydrogen atoms which are reactive toward isocyanates, in the presence of water and/or physical blowing agents. The invention further relates to the use of the polyurethane foam for thermal and acoustic insulation for internal combustion engines, and also thermal and acoustic insulation for internal combustion engines containing the polyurethane foam.

Abstract: The present invention relates to predominantly (>50 vol %) open-cell (to DIN ISO 4590-5 86), cold-deformable, rigid polyurethane foams which possess high acoustic absorption and a uniform cell structure and which are suitable for producing automotive interior trim, more particularly roof linings and pillar trim.

Abstract: The invention relates to temperature-stable rigid foams which can be cold formed and have a density of 0 to 100 kg/m (according to DIN 53420), an elongation at break (according to DIN 53430) of 12 to 35%, a percentage of open cells (according to DIN ISO 4590-86) of 51% to 98% and a storage module of the foam (according to DIN EN ISO 6721 B:1996-12) in the temperature range of 60 DEG to 190 DEG C of, on average, greater or equal 0.1 MPa, and to composite materials produced with said foams.

Abstract: The present invention relates to predominantly open-cell, cold-deformable, rigid polyurethane foams which possess a uniform cell structure with similar cell sizes and similar physical properties, more particularly a similar open-cell content. These foams are suitable for producing automotive interior trim, more particularly roof linings and pillar trim.

Abstract: The present invention relates to predominantly (>50 vol %) open-cell (to DIN ISO 4590-5 86), cold-deformable, rigid polyurethane foams which possess high acoustic absorption and a uniform cell structure and which are suitable for producing automotive interior trim, more particularly roof linings and pillar trim.

Abstract: The present invention relates to composite elements comprising a layer of open-cell, hard, isocyanate-based foam and at least one further layer of isocyanate-based foam, and to their use for sound absorption.

Abstract: The present invention relates to predominantly open-cell, cold-deformable, rigid polyurethane foams which possess a uniform cell structure with similar cell sizes and similar physical properties, more particularly a similar open-cell content. These foams are suitable for producing automotive interior trim, more particularly roof linings and pillar trim.

Abstract: The present invention concerns a method for the treatment of polyurethane foam, wherein the polyurethane foam is obtainable from a reaction mixture comprising an ethylene oxide/propylene oxide polyol component with an OH number of ?20 mg KOH/g to ?45 mg KOH/g and an isocyanate component with an NCO content of ?20 weight-% to ?49 weight-% which is selected from the group comprising diphenylmethane diisocyanate, toluene diisocyanate, their prepolymers with an ethylene oxide/propylene oxide polyol whose OH number is from ?20 mg KOH/g to ?45 mg KOH/g and/or their allophanates, ureas, biurets, uretdiones, isocyanurates or carbodiimides. The invention further concerns a polyurethane foam which has been treated by such a method. After the foam formation has finished, the polyurethane foam is irradiated with microwave radiation and the irradiated energy, in relation to the volume accessible by the microwave radiation, is from ?1.0 kilojoules/liter to ?2.23 kilojoules/liter.