Flame-resistant and sound-and vibration-insulating member for vehicles, and process of manufacturing the same

A flame-resistant and sound- and vibration-insulating member for a vehicle, which is a soft polyurethane foam formed by a reaction between an organic polyisocyanate component and a polyol component, wherein the organic polyisocyanate component includes as a major component thereof a monomeric MDI which includes diphenylmethane diisocyanate and further includes a reaction product containing carbodiimide and/or uretone imine groups, the reaction product being obtained by carbodiimidizing isocyanate groups of diphenylmethane diisocyanate, the monomeric MDI containing 29-33% of NCO and including 1-45% by weight of 2,4'-diphenylmethane diisocyanate in the form of a monomer and/or a carbodiimidization product thereof, while the polyol component includes at least 50% by weight of polyol having 2-8 functional groups and a molecular weight of 1000-10000, and wherein the soft polyurethane foam has a density of 40-150kg/m, a 50% compressive load of (5-60) x 10N/mm, a tensile strength of at least 120kPa and an elongation of at least 50%, and exhibits inflammability under an inflammability test according to FMVSS-302 (Federal Motor Vehicle Safety Standards, USA). A process of manufacturing the flame-resistant and sound- and vibration-insulating member is also disclosed.