Patent ID: 7753034

Claim:
An evaporative emissions control system for reducing evaporative emissions from a motor vehicle fuel tank, wherein said evaporative emissions system comprises an evaporative emissions treatment canister coupled to said fuel tank, wherein a hydrocarbon adsorbent is coated as a washcoat slurry on a support substrate contained within said canister, wherein said support substrate is selected from the group consisting of ceramic, metallic and plastic wall-flow monolith, ceramic, metallic and polymeric foams, metallic foils, metallic screens, metallic meshes, metallic woven wires and polymeric fibers, and wherein said washcoat slurry comprises: a) one or more hydrocarbon adsorbents for the adsorption of evaporative hydrocarbons; b) an organic polymer binder to improve the adhesion of said hydrocarbon adsorbent to the surface of said canister; and c) an anionic dispersant.