Abstract: Described herein is a foamable powder-based composition, comprising: (a) at least one powder-based polymer in an amount of no less than 8% by weight, based on the total weight of the composition, (b) at least one plurality of expandable microspheres in an amount of no less than 15% by weight, based on the total weight of the composition, and (c) optionally at least one filler, wherein the plurality of expandable microspheres in the composition expands when heating; and wherein the composition has a water content of no more than 3% by weight based on the total weight of the composition.

Abstract: Aqueous dispersions and uses for the same. The aqueous dispersion includes a component (a) of one or more ethylene-vinyl ester copolymers and a component (b) of one or more protective colloids. The aqueous dispersion may optionally a component (c1) of one or more nonionic surfactants and/or a component (c2) of one or more ionic surfactants. Where a total amount of the component (b) is less than or equal to 2.2 pphm, preferably between 1-2.2 pphm, or more preferably 1.8 pphm. Additionally, where a total amount of the component (c1) and the component (c2) is less than 0.1 pphm, preferably less than or equal to 0.01 pphm.