Abstract: The present invention relates to a process for preparing aqueous dispersions. The invention also relates to the formation of core-shell particles in aqueous dispersions. The core-shell particles are useful as impact-modifiers for poly(meth)acrylate moulding compositions.

Abstract: The present invention relates to a process for preparing aqueous dispersions. The invention also relates to the formation of core-shell particles in aqueous dispersions. The core-shell particles are useful as impact-modifiers for poly(meth)acrylate moulding compositions.

Abstract: The invention relates to a method for producing a pharmaceutical dosage form as tablets, pellets and/or in the form of an active ingredient-containing matrix, whereby the tablets, pellets and/or active ingredient-containing matrix contain a pharmaceutical active ingredient and a copolymer serving as a coating agent and/or binding agent, and optionally contain a core and pharmaceutically common additives. According to the invention, the copolymer, the pharmaceutical active ingredient, the optionally present core and/or the pharmaceutically common additives are processed using known techniques by melting, injection molding, extrusion, wet granulation, casting, dipping, spreading out, spraying on, or pressing to form tablets, pellets and/or an active ingredient-containing matrix. The inventive method is characterized in that a copolymer is used that consists of 20 to 34 wt. % methacrylic acid, 20 to 69 wt. % methylacrylate and 0 to 40 wt. % ethylacrylate and, optionally, of 0 to 10 wt.

Abstract: The invention describes a novel impact modifier, built up from core-shell1- and shell 2, the core being capable of plastic deformation. Good mechanical properties were achieved using a small amount of impact modifier.

Abstract: The invention relates to a macroporous plastics bead material with an average particle diameter from 10 to 1000 ?m, containing a copolymer of a) 5-60 wt. % vinylically polymerizable monomers with a water solubility of at least 1% at 20° C., b) 1-40 wt. % vinylically polymerizable monomers with an additional functional group, which can enter into covalent bonds with the nucleophilic groups of the ligands in a polymer-like reaction, c) 10-40 wt. % hydrophilic, crosslinking radical-polymerizable monomers with two or more ethylenically unsaturated polymerizable groups and d) 10-60 wt. % vinylically polymerizable monomers with a water solubility of at most 1% at 20° C. are contained, as a rule with the monomers a) to d) adding up to 100%.

Abstract: The invention describes a novel impact modifier, built up from core-shell1- and shell 2, the core being capable of plastic deformation. Good mechanical properties were achieved using a small amount of impact modifier.

Abstract: The invention relates to a novel impact-resistance modifier, constructed from a core-shell 1 and a shell 2, whereby the core is plastically deformable. The invention is characterised by excellent mechanical properties obtained by a low content of impact-resistance modifier.

Abstract: The invention relates to a process for synthesis, by inverse bead polymerization of a monomer phase, of a bead-like, cross-linked, hydrophilic copolymer which has binding activity toward ligands containing nucleophilic groups. The invention relates to support polymer materials with high binding capacity for penicillin acylase and low swelling factor, as well as to use of the same.

Abstract: The present invention relates to a process for preparing an aqueous dispersion, by a) forming an initial charge from water and emulsifier, b) adding from 25.0 to 45.0 parts by weight of a first composition comprising A) from 50.0 to 99.9 parts by weight of alkyl methacrylates, B) from 0.0 to 40.0 parts by weight of alkyl acrylates, C) from 0.1 to 10.0 parts by weight of crosslinking monomers and D) from 0.0 to 8.0 parts by weight of styrenic monomers and polymerizing, c) adding from 35.0 to 55.0 parts by weight of a second composition comprising E) from 80.0 to 100.0 parts by weight of (meth) acrylates F) from 0.05 to 10.0 parts by weight of crosslinking monomers and G) from 0.0 to 20.0 parts by weight of styrenic monomers, and polymerizing, d) adding from 10.0 to 30.0 parts by weight of a third composition comprising H) from 50.0 to 100.0 parts by weight of alkyl methacrylates, I) from 0.0 to 40.0 parts by weight of alkyl acrylates and J) from 0.0 to 10.

Abstract: The invention relates to a dispersion suitable for use as coating agent and binder for pharmaceutical forms, having a solids content of 10–70% by weight consisting of a) from 90 to 99% by weight of a methacrylate copolymer consisting of at least 90% by weight of (meth)acrylate monomers containing neutral radicals and having a glass transition temperature Tg of from ?20° C. to +20° C. as determined by the DSC method, and b) 1–10% by weight of a nonionic emulsifier having an HLB of from 15.2 to 17.3.

Abstract: The invention relates to a method for producing a pharmaceutical dosage form as tablets, pellets and/or in the form of an active ingredient-containing matrix, whereby the tablets, pellets and/or active ingredient-containing matrix contain a pharmaceutical active ingredient and a copolymer serving as a coating agent and/or binding agent, and optionally contain a core and pharmaceutically common additives. According to the invention, the copolymer, the pharmaceutical active ingredient, the optionally present core and/or the pharmaceutically common additives are processed using known techniques by melting, injection molding, extrusion, wet granulation, casting, dipping, spreading out, spraying on, or pressing to form tablets, pellets and/or an active ingredient-containing matrix. The inventive method is characterized in that a copolymer is used that consists of 20 to 34 wt. % methacrylic acid, 20 to 69 wt. % methylacrylate and 0 to 40 wt. % ethylacrylate and, optionally, of 0 to 10 wt.

Abstract: The invention relates to a macroporous plastics bead material with an average particle diameter from 10 to 1000 ?m, containing a copolymer of a) 5-60 wt. % vinylically polymerizable monomers with a water solubility of at least 1% at 20° C., b) 1-40 wt. % vinylically polymerizable monomers with an additional functional group, which can enter into covalent bonds with the nucleophilic groups of the ligands in a polymer-like reaction, c) 10-40 wt. % hydrophilic, crosslinking radical-polymerizable monomers with two or more ethylenically unsaturated polymerizable groups and d) 10-60 wt. % vinylically polymerizable monomers with a water solubility of at most 1% at 20° C. are contained, as a rule with the monomers a) to d) adding up to 100%.

Abstract: The invention relates to a process for synthesis, by inverse bead polymerization of a monomer phase, of a bead-like, cross-linked, hydrophilic copolymer which has binding activity toward ligands containing nucleophilic groups. The invention relates to support polymer materials with high binding capacity for penicillin acylase and low swelling factor, as well as to use of the same.

Abstract: The present invention provides a process for preparing bead polymers having an average particle size of 1 to 40 &mgr;m, which includes: contacting: at least one polymerizable mix which includes at least 50% by weight of at least one (meth)acrylate monomer, at least one aluminum compound, and an aqueous phase, to prepare a mixture; dispersing the mixture at a shear rate≧103 s−1 to form a dispersion, wherein the dispersion is stabilized by the aluminum compound; and polymerizing to produce bead polymers having an average particle size of 1 to 40 &mgr;m.

Abstract: The present invention provides a moulding composition, which includes: a plurality of bead polymers dispersed in at least one matrix polymer; wherein the bead polymers: have an average particle size of 5 to 40 &mgr;m, and have a refractive index nD at 20° C. which is different from a refractive index nD at 20° C. of said matrix polymer; and wherein the bead polymers are prepared by a process, which includes: contacting: at least one polymerizable mix which includes at least 50% by weight of at least one (meth)acrylate monomer, at least one aluminum compound, and an aqueous phase, to prepare a mixture; dispersing the mixture at a shear rate ≧103 s−1 to form a dispersion, wherein the dispersion is stabilized by the aluminum compound; and polymerizing to produce the bead polymers having an average particle size of 5 to 40 &mgr;m.

Abstract: The invention relates to a novel impact-resistance modifier, constructed from a core-shell 1 and a shell 2, whereby the core is plastically deformable. The invention is characterised by excellent mechanical properties obtained by a low content of impact-resistance modifier.

Abstract: The invention relates to a dispersion suitable for use as coating agent and binder for pharmaceutical forms, having a solids content of 10-70% by weight consisting of

Abstract: The present invention provides a process for preparing bead polymers having an average particle size of 1 to 40 &mgr;m, which includes:

Abstract: The present invention provides a moulding composition, which includes:

Abstract: The invention relates to reactive polysols with a reactive monomer portion which is polymerized during thermal coating. The polysols exhibit good mechanical properties. A monofunctional (meth)acrylate monomer of formula (1) is used as reactive monomer component.