| abstract |
The invention relates to a method for the production of a coating or binding agent for oral or dermal pharmaceutical dosage forms, comprising essentially (a) a copolymer consisting of radically polymerized C1-to C4 esters of acrylic or methacrylic acids and additional (meth)acrylate monomers having functional tertiary ammonium groups, wherein the copolymer is contained in the form of a powder with an average particle size of 1-40 mu m; (b) 3 to 15 percent by weight in relation to (a) of an emulsifier with an HLB value of less than 14 and (c) 5 to 50 percent by weight in relation to (a) of a C12- to C18-monocarboxylic acid or a C12- to C18-hydroxyl compound, wherein components (a), (b) and (c) are mingled or mixed adding or not water and optionally adding a pharmaceutical active ingredient and other common additives. The coating or binding agent is produced from the mixture by melting, pouring, spreading or spraying. The invention also relates to the coating or binding agent itself. |