The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2007
Filed:
Feb. 27, 2001
Hans-ulrich Petereit, Darmstadt, DE;
Christian Meier, Darmstadt, DE;
Erna Roth, Darmstadt, DE;
Roehm GmbH & Co. KG, Darmstadt, DE;
Abstract
The invention relates to a process for the preparation of a coating and binding agent for oral or dermal pharmaceutical forms, essentially consisting of (a) a copolymer consisting of free-radical-polymerized C1 to C4 esters of acrylic or methacrylic acid and further (meth)acrylate monomers which contain functional tertiary ammonium groups, the coplymer being present in powdered form having an average particle size of 1–40 μm, (b) 3 to 15% by weight, based on (a), of an emulsifier having an HLB of at least 14 and (c) 5 to 50% by weight, based on (a), of a C—to C-monocarboxylic acid or a C—to C-hydroxyl compound, the components (a), (b) and (c) being blended or mixed with one another with or without addition of water and if appropriate with addition of a pharmaceutical active compound and further customary additives and the coating and binding agent being produced from the mixture by melting, casting, spreading or spraying. The invention further relates to the coating and binding agent itself.