PROCESS FOR MAKING POWDER COATING COMPOSITIONS FOR STABLE PROTECTING COATING FOR PHARMACEUTICAL DOSAGE FORMS

The invention relates to a method for producing powdery, antioxidant-containing coating agents from aqueous polymer dispersions, containing as component A a polymer, obtained by radical polymerization, made of a) N,N-diethylaminoethyl methacrylate, and b) at least one radically polymerizable compoun...

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Bibliographic Details
Main Authors LINNER, Bernhard, ANGEL, Maximilian, KOLTER, Karl
Format Patent
LanguageEnglish
French
German
Published 12.09.2018
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
WORKING-UP
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Summary:The invention relates to a method for producing powdery, antioxidant-containing coating agents from aqueous polymer dispersions, containing as component A a polymer, obtained by radical polymerization, made of a) N,N-diethylaminoethyl methacrylate, and b) at least one radically polymerizable compound, selected among esters of a,ß-ethylenically unsaturated monocarboxylic and dicarboxylic acids containing C1-C8-alkanols, characterized in that the antioxidants are incorporated in the aqueous polymer dispersion in the form of a solution or dispersion and the aqueous polymer dispersion is transferred into a powder form by spray methods.
Bibliography:Application Number: EP20120705867