10.
    发明专利
    未知

    公开(公告)号:NO751706L

    公开(公告)日:1975-11-18

    申请号:NO751706

    申请日:1975-05-14

    Applicant: HOECHST AG

    Abstract: The sound absorbing properties of plasters, based on synthetic resin emulsions as binders, are improved, if as binder dispersions are used the polymer content of which has a dilatometrically determined second order transition temperature of between -20 DEG C and +10 DEG C, and if the fillers consist of at least 70% of material having a grain-size of from 0.35 to 1.5 mm.

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