Patent ID: 9149552
Filing Date: 2015-10-06
Classification: A61L,C09D,Y10T

Abstract:
1. An article comprising a base material comprising a pulp composition comprising fibers, wherein pores are formed between the fibers; a volatile composition comprising a member selected from the group consisting of fragrances, flavor compounds, odor-eliminating compounds, aromatherapy compounds, natural oils, essential oils, water-based scents, odor neutralizing compounds, and combinations thereof, wherein the pores of the base material are at least partially filled with the volatile composition; and a modulating coating formed by dissolving a barrier substance in an aqueous suspension of hygroscopic silica nanoparticles so that a surface charge of the hygroscopic silica nanoparticles causes the barrier substance to group around the hygroscopic silica nanoparticles through electrostatic interactions in the modulating coating; wherein the modulating coating further comprises a continuous phase of the barrier substance and the hygroscopic silica nanoparticles dispersed therein; wherein the modulating coating at least partially covers one outer surface of the base material; wherein the barrier substance is selected from a group consisting of maltodextrin, dextrin, polysaccharide, carbohydrate, natural unmodified starch, modified starch, and combinations thereof; wherein the hygroscopic silica nanoparticles comprise a spherical surface area defined by a diameter ranging from 1 nm-100 nm; wherein the barrier substance hinders a release of the volatile composition through the modulating coating; wherein the hygroscopic silica nanoparticles facilitate the release of the volatile composition through the modulating coating; and wherein the article exhibits a ratio of a first day weight-loss value to a last day weight-loss value in a range of 1 to 20 over a 30 day life cycle of the article.