Barrier coatings for film and structures

A coated film comprising:

• base film
• a coating on at least one surface of said base film, said coating comprising:
• (a) vermiculite,
• (b) polymer capable of forming a non-elastomeric film,
• (c) cross-linking agent,
• (d) chemical stabilizing agent comprising at least one of
• materials that contain cationic functionality comprising at least one of lithium, alkyl C2-C6 ammonium, allyl ammonium, heterocylclic ammonium, morpholonium, and amino C3-C6 alkyl carboxylic acids;
• lithium cations in combination with anions comprising at least one of carboxylic, phosphoric, phosphonic, sulfonic and fatty acids, lithium chelating agents, and lithium salts;
• and
• ammonia, C3-C6 amine, heterocyclic amines, lithium hydroxide, morpholine, and morpholine oleate;
• said coating being between 0.10μ and 0.70μ thick and said coated film having an oxygen transmission rate of less than 5.0 cc/100 in2 per 24 hours at 1 atmosphere pressure and 23° C.;
• and
• wherein the weight ratio of the cation portion of said chemical stabilizing agent to vermiculite is at least 0.0025.