Basf Aktiengesellschaft

Sven Grabowski

Axel Sanner

Bernhard Czauderna

Joerg Rosenberg

Norbert Guntherberg

Jurgen Hofmann

Hilmar Ohlig

Elmar Mailahn

Klaus Bus

Jorg Breitenbach

Kurt Wendel

Norbert G&uuml;ntherberg

Norbert Mosbach

Hartmut Heinen

Astrid Kah-Helbig

Winfried Mueller

Wolfgang Fischer

Norbert Niessner

Graham E McKee

Walter Heckmann

Peter Ittemann

Graham Edmund Mc Kee

Michael Fischer

Bernhard Rosenau

Gerd Ehrmann

Werner Maier

Joachim Seibring

Andreas Kleinke

Peter Barghoorn

J&uuml;rgen Hofmann

Jurgen Koch

Reinhard Spengler

Rudolf Binder

J&uuml;rgen Koch

Rainer Nachtrab

Volker Buehler

Alexander Ludwig

Shear forces are used for essentially salt-free coagulation of plastics dispersions or rubber dispersions. For this, method of use is made of an apparatus with at least one shearing module which has a stator and a rotor arranged within the stator, where the surfaces facing toward one another in the stator and in the rotor are in each case smooth, or at least the rotor exhibits a structure formed on its surface and facing from this in the direction of the stator, and between the stator and the rotor there is a gap of predetermined gap width. The process is carried out by passing the dispersion to be coagulated through the gap between stator and rotor and precipitating the dispersion by rotation of the rotor with predetermined shear rate and shear deformation.

Method for coagulating plastics dispersions using a device with shearing elements

A thermoplastic molding composition having little intrinsic color is produced from a graft copolymer and a thermoplastic polymer. The graft copolymer is produced from a soft elastomeric particulate graft base obtained by polymerization of a conjugated diene alone or with a small amount of a monoethylenically unsaturated monomer, upon which is grafted a vinylaromatic monomer and acrylonitrile and optionally another monoethylenically unsaturated monomer. The thermoplastic polymer is a copolymer of a vinylaromatic monomer and acrylonitrile and optionally an additional monoethylenically unsaturated monomer. The thermoplastic molding composition has a low level of intrinsic color coupled with good mechanical properties and can be processed by, for example, extrusion, injection molding, calendaring, blow molding, compression molding, or sintering.

Low individual color thermoplastic molding material

Slow-release matrix pellets and the production thereof

Process for producing thermoplastics

Polymer compositions for graft copolymer as well as mixtures thereof and

Toughened thermoplastics are prepared by mechanically dewatering a water-moist elastomer component A containing up to 50% by weight of residual water and mixing the resulting dewatered elastomer component A' with a thermoplastic polymer B in a mixing unit, by a process in which the elastomer component A is fed to a twin-screw extruder which has corotating screws and essentially includes, in the transport direction,

Preparation of thermoplastics

Solid active extrusion compound preparations containing low-substituted

Toughened thermoplastics are prepared by mechanically dewatering a water-moist elastomer component A containing up to 60% by weight of residual water and mixing the resulting dewatered elastomer component A' with a thermoplastic polymer B in an extruder, by a process in which the elastomer component A is fed to a twin-screw extruder which has corotating, in each case double-flight, screws and essentially includes, in the transport direction,

Production of covered tablets

Toughened thermoplastics are prepared by mixing a water-moist elastomer component A containing up to 60% by weight of residual water with a thermoplastic polymer B and further polymers C and additives D in an extruder with mechanical dewatering of the elastomer component A, by a process in which the components A, B, C and D are fed to a twin-screw extruder which has corotating screws and essentially comprises, in the transport direction,

Preparation of hydrogen peroxide, C1 to C4-monopercarboxylic acid and

Compositions in the form of solid solutions

Compositions which contain active substances and are in the form of solid particles can be obtained by intimately mixing the active substance with a water-soluble melt composed of

Compositions which contain active substances and are in the form of

A solid depot drug form produced by melt extrusion at from 50.degree. to 200.degree. C. and continuous shaping of a mixture of from 0.1 to 70% by weight, based on the finished depot form, of a pharmaceutical active ingredient with a polymer melt of the following composition:

Solid depot drug form

A process for the production of solid pharmaceutical depot forms by application of a reconstituted aqueous dispersion of a pharmaceutically acceptable binder to a core which contains active substance or by wet granulation of the pharmaceutical active substance with such a binder dispersion or by direct tableting of an active substance with the redispersible binder powder, wherein the binder has been obtained by emulsion polymerization and subsequent spray drying of the resulting aqueous dispersion with a water-soluble pharmaceutically acceptable spraying aid with a glass transition temperature of at least 60.degree. C. and with or without a pharmaceutically acceptable antiblocking agent.

Production of solid pharmaceutical depot forms

Growing community of inventors

Ludwigshafen, Germany

Sven Grabowski