Plaster mixture consisting of an aqueous polymer dispersion containing pigment and filler
AssigneeHoechst Aktiengesellschaft
InventorsHerbert Braunisch, Heinz Lehmann
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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.degree. C and +10.degree. C, and if the fillers consist of at least 70% of material having a grain-size of from 0.35 to 1.5 mm.
Claims5
In a plaster composition for preparing sound absorbing resin-based plasters consisting essentially of an aqueous polymer dispersion containing pigments and mineral fillers, the improvement which comprises using a dispersion polymer having a dilatometric second order transition temperature of -20.degree. C. to +10.degree. C. and a mixture of pigment and filler of such a grain size that 70% by weight of the mixture has a grain size of 0.35 to 1.5 mm.
Dependencies are inferred from the claim text.