The invention provides methods for making clay/wax nanocomposites and
coatings and films of same with improved chemical resistance and gas
barrier properties. The invention further provides methods for making and
using emulsions of such clay/wax nanocomposites. Typically, an
organophillic clay is combined with a wax or wax/polymer blend such that
the cohesion energy of the clay matches that of the wax or wax/polymer
blend. Suitable organophilic clays include mica and phyllosilicates that
have been surface-treated with edge or edge and surface modifying agents.
The resulting nanocomposites have applications as industrial coatings and
in protective packaging.