Patent ID: 9668977
Date: 2017-06-06
CPC Classifications: A61K,C08F,C08L

Claim:
1. A coating composition suitable for coating a pharmaceutical or nutraceutical dosage form comprising one or more pharmaceutical or nutraceutical active ingredients, from which coating composition the release of the pharmaceutical or nutraceutical active ingredient is not more than 10% under in-vitro conditions at pH 1.2 after 2 hours in medium according to USP with and without the addition of 20% (v/v) ethanol, the coating composition comprising: at least 20% by weight of an enteric core/shell polymer composition derived from an emulsion polymerisation process, whereby a core of polymerized particles is first formed by polymerization of the monomers comprising the polymer or copolymer of the core and a shell is subsequently formed on the surface of the core particles by polymerization of the monomers comprising the polymer or copolymer of the shell, wherein the core of the core/shell polymer composition comprises a water-insoluble, cross-linked polymer or copolymer, and the shell of the core/shell polymer composition comprises an anionic polymer or copolymer, wherein the anionic polymer or copolymer consists essentially of: