摘要:
The present invention relates to hard capsules comprising (A) polymers obtainable by free-radical polymerization of a) at least one vinyl ester in the presence of b) polyether-containing compounds and c) where appropriate one or more other copolymerizable monomers c) and subsequent at least partial hydrolysis of the ester functions in the original monomers a), with the proviso that in the absence of another copolymerizable monomer c) the polyether-containing compound b) must have a number average molecular weight ≦10,000, (B) where appropriate structure-improving auxiliaries and (C) other conventional shell constituents, the production and use thereof.
摘要:
The use of polymers which are obtainable by polymerization of a) at least one vinyl ester of aliphatic C1-C24-carboxylic acids in the presence of b) polyethers of the general formula I, in which the variables have, independently of one another, the meanings mentioned in the description, as coating agent, binder and/or film-forming excipient in pharmaceutical presentations.
摘要:
The present invention relates to soft capsules comprising (a) polymers prepared by polymerization of vinyl esters in the presence of polyethers (b) where appropriate structure-improving auxiliaries and (c) where appropriate other conventional constituents, the use and production thereof.
摘要:
The present invention relates to water-soluble or water-dispersible copolymers obtainable by free-radical polymerization of a) 80 to 20% by weight of hydroxy-C1–C6-alkyl (meth)acrylate and, where appropriate, one or more compounds of the formula (A) or (B) with R1=H, C1–C6-alkyl, R2=H, CH3 R3=C1–C24-alkyl or mixtures thereof in the presence of b) 20 to 80% by weight of polyvinyl alcohol (PVA) and c) where appropriate 0 to 20% by weight of other polymerizable compounds (C), a process for their preparation, and their use as coating agent, binder and/or film-forming excipient in pharmaceutical dosage forms.
摘要:
A process for preparing aqueous polymer dispersions by means of a polymerization, conducted in an aqueous system, of at least one free-radically polymerisable ethylenically unsaturated monomer in the presence of a polymerisation initiator, wherein the pH of the aqueous dispersion is adjusted during the preparation process by adding at least two different, basic reagents, at least one of said basic reagents being added in a plurality of stages.
摘要:
A process for preparing aqueous polymer dispersions by means of a polymerization, conducted in an aqueous system, of at least one free-radically polymerisable ethylenically unsaturated monomer in the presence of a polymerisation initiator, wherein the pH of the aqueous dispersion is adjusted during the preparation process by adding at least two different, basic reagents, at least one of said basic reagents being added in a plurality of stages.
摘要:
A process for preparing graft copolymers of polyvinyl esters by polymerization of a) at least one vinyl ester of aliphatic C1-C24-carboxylic acids in the presence of b) polyethers which are solid at room temperature and have the general formula I, c) and, where appropriate, at least one other monomer using a free-radical organic initiator system, wherein liquid polyalkylene glycol is used as solvent for the free-radical initiator system (feed).
摘要:
Dosage forms provided with protective coatings in which a core comprising at least one acidic active ingredient is provided with at least one inner and one outer coating layer, where the outer layer comprises, as component A, a cationic polymer which is an emulsion polymer of N,N-diethylaminoethyl methacrylate and further monomers.
摘要:
The present invention relates to a polymeric composition for coating solid substrates (S) consisting of: a) 0.5-90% by weight of polyethylene glycol with a weight-average molecular weight in the range from 1500 to 20 000 g/mol (component A), b) 0.5-20% by weight of a water-soluble polyvinylpyrrolidone with a Fikentscher K value in the range from 12 to 90 (component B), c) 0-95% by weight of a solvent (L), and d) 0-70% by weight of one or more non-polymeric aids (component C).