Patent ID: 6624210
Filing Date: 2003-09-23
Classification: A61K,A61P,Y10S

Abstract:
A process for preparation of a formulation in the form of a powder, paste or aqueous suspension for use as a coating and binding agent or encapsulating film for oral or dermal pharmaceutical forms comprising intermixing(a) 35 to 85 wt % of a copolymer comprising radical-polymerized C1 to C4 alkyl esters of acrylic or methacrylic acid and (meth)acrylate monomers containing functional tertiary ammonium group in powder form with a mean particle size of 1-40 &mgr;m as measured by laser refraction in highly diluted medium, (b) 1 to 50 wt % of a plasticizer as well as (c) 1 to 15 wt % of an emulsifier with an HLB (hydrophile-lipophile balance) value of at least 14, wherein components (a), (b) and (c) are intermixed with each other with or without addition of water and optionally with addition of a pharmaceutically active principle and optionally common filler to form a powder, paste or aqueous suspension.