| abstract |
The foamable aqueous composition can be used to form a light blocking and light colored foam opaque element having one or more dry foam layers. The composition comprises: (a) 0.05 to 20% by weight of a porous particle comprising a continuous polymer phase and a first set of discrete pores, the porous particle having a mode particle size of 2 to 50 μm; (b) at least 20% by weight (c) 0.1 to 30% by weight of binder materials including dispersants, plasticizers, inorganic or organic pigments or dyes, thickeners, flame retardants, biocides, One or more additives of fungicides, optical brighteners, tinting colorants, metal flakes and inorganic or organic fillers; (d) water; and (e) at least 0.001% by weight of An opaque colorant that absorbs electromagnetic radiation. The foamable aqueous composition can be aerated, disposed on a porous substrate, dried and rolled on the porous substrate. |