Patent ID: 7041315

Claim:
An enteric capsule film composition consisting essentially: a) 5–60 weight % pectin; b) 40–95 weight % of a second film-forming polymer selected from the group consisting of gelatin; pullulan; polyvinyl alcohol; hydroxypropylated starch, hydroxyethylated starch; hydroxypropyl methylcellulose, hydroxypropyl cellulose, methylcellulose, hydroxyethyl cellulose, hydroxyethyl methyl cellulose; or mixtures thereof; and c) a setting system comprising the pectin of part (a) in combination with (i) 0.04–2 weight % of a salt comprising a divalent cation; or (ii) 0.2–8 weight % of a polysaccharide selected from the group consisting of carrageenan, gellan and mixtures thereof; wherein the capsule can resist dissolution for at least 2 hours at a PH of 1.2.