| abstract |
Foamed opaque elements having one or more layers of dry foam are formed using the foamable aqueous composition. The composition contains: (a) 0.5 to 20% by weight of porous particles comprising a continuous polymer phase and discrete pores dispersed within the continuous polymer phase. The porous particles have a mode particle size of 2 to 50 μm; (b) at least 20 wt % binder material; (c) 0.1 to 30 wt % including dispersants, plasticizers, inorganic or organic pigments and dyes, Combinations of various additives of flame retardants, biocides, fungicides, optical brighteners, tinting colorants, metallic flakes, and inorganic or organic fillers; (d) water; and (e) at least 0.001% by weight of Opaque colorants other than (c). The foamable aqueous composition is suitably aerated, disposed on a porous substrate, dried and rolled on the porous substrate to form a foamed opaque element. |