To provide a flame-retardant sound insulating material for a vehicle having desired rigidity and flame retardancy in addition to sound insulation property.SOLUTION: A flame-retardant sound insulating material for a vehicle includes a polyurethane foam obtained by foam molding of a urethane resin composition. The urethane resin composition has (A) an isocyanate component, (B) a polyol component, (C) a flame-retardant plasticizer, and (D) an antioxidant. (A) The isocyanate component has a mixture of 2,4'-diphenylmethane diisocyanate and 4,4'-diphenylmethane diisocyanate, and one or more kinds of modified bodies selected from a carbodiimide modified body and a urethoneimine modified body of at least one of the mixture.SELECTED DRAWING: None

    【課題】 防音性に加えて、所望の剛性および難燃性を有する車両用難燃性防音材を提供する。【解決手段】 車両用難燃性防音材は、ウレタン樹脂組成物を発泡成形して得られるポリウレタンフォームを備える。ウレタン樹脂組成物は、(A)イソシアネート成分と(B)ポリオール成分と(C)難燃性可塑剤と(D)酸化防止剤とを有する。(A)イソシアネート成分は、2,4’-ジフェニルメタンジイソシアネートおよび4,4’-ジフェニルメタンジイソシアネートの混合物と、該混合物の少なくとも一方のカルボジイミド変性体およびウレトンイミン変性体から選ばれる一種以上の変性体と、を有する。【選択図】 なし


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    Title :

    FLAME-RETARDANT SOUND INSULATING MATERIAL FOR VEHICLE


    Additional title:

    車両用難燃性防音材


    Contributors:

    Publication date :

    2024-01-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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