Patent ID: 7605205

Claim:
A process for preparing a nanocomposite composition, comprising: a) contacting a multifunctional intercalant comprising a cationic moiety separated from an anionic moiety by at least 1 carbon atom and an intercalation modifier with a clay at a temperature and for a period of time sufficient to produce an at least partially intercalated clay; b) dissolving at least a portion of a functionalized interpolymer in a solvent to produce a functionalized interpolymer mixture wherein the functionalized interpolymer comprises C 4 to C 7 isoolefin derived units, multiolefin derived units and halogenated multiolefin derived units; and c) contacting the at least partially intercalated clay with the functionalized interpolymer mixture at a temperature, and for a period of time sufficient to produce the nanocomposite composition.