Bayer Aktiengesellschaft

Bayer Aktiengesellschaft Ag

Werner Waldenrath

Dieter Freitag

Joachim Wank

Bernhard Schulte

Hans-Leo Weber

Lutz Schrader

Claus Burkhardt

Rolf Dhein

Claus H Wulff

Volker Serini

Uwe Hucks

Uwe Westeppe

Gunther Weymans

Carl Casser

Manfred Schreckenberg

Ralf Lange

Karl-Herbert Fritsch

Friedrich Jonas

Eckart Reese

Heinz-Jurgen Dziurla

Dieter Arlt

Uwe Claussen

Walter Uerdingen

Wilfried Zecher

Rudolf Hombach

Werner Tischer

Dittmar Nerger

Hans Kaloff

Friedrich Johannaber

Hans L Weber

Volker Wiskamp

Hans E Braese

Karl-Heinz Julicher

Heinz Schmitz

Gunter Pakulat

Walter Uerdinger

Wolfgang Lamaack

Dietmar Benner

The production of multi-layer mouldings (17) from a sheet (6) injection-moulded behind with a resin can be simplified by the sheet (6) being deformed in an injection mould by means of a fluid pressure medium, in particular nitrogen, at at least 20 bar and the deformed sheet (6) injection-moulded behind with resin directly thereafter in this injection mould, a pressure keeping the deformed sheet (6) in position being maintained during the injection-moulding behind.

Process for producing multi-layer mouldings

Dihydroxydiphenyl cycloalkanes corresponding to the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another represent hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl and C.sub.7 -C.sub.12 aralkyl,

Polycarbonate from dihydroxydiphenyl cycloalkane

The invention relates to new injection-moulded articles made from metal/plastic composite systems containing a polyurethane adhesive (intermediate) layer, and a process for the preparation thereof.

Injection-moulded article and process for the production thereof

The invention relates to the use of salts of sulfosuccinic acid esters as internal antistatic agents, take-off and winding aids for transparent cast films of polycarbonates, to a process for the production of cast polycarbonate films and to the cast polycarbonate films themselves containing salts of sulfosuccinic acids and also to the use of the new cast polycarbonate films in the electrical field and optical field.

Alkali or alkaline earth salts of sulfosuccinic acid esters as internal

Polycarbonate from dihydroxy diphenyl cycloalkane

A process for the production of optically isotropic extrusion films is disclosed. Accordingly in a first process step a thermoplsatic resin is extruded to form a film having a thickness below 600 .mu.m. The second process step entails

Process for the production of optically isotropic extrusion films

The positive characteristics of loudspeaker diaphragms are improved by the use of a thermoplastic polyurethane sheet with a thickness of 0.06 to 0.8 mm at least for the moving part (1).

Diaphragm for loudspeaker

A 0.3 to 2 mm thick multilayer composite material comprising the following layers:

Multilayer composite material

Films from aromatic polyesters and from aromatic polyestercarbonates are excellently suitable for preparing printing ribbons, in particular for thermal and electrothermal recording processes.

Printing ribbon comprising polycondensates

Dihydroxydiphenyl cycloalkanes, their production and their use for the

This invention relates to multilayer films composed of thermoplastic films, tough elastic polyurethane films and optionally a sealing layer and to the use of these multilayer films for the manufacture of crash pad films, i.e. as outer skin for automobile dash boards.

Multilayer films from the use in crash pads

This invention relates to the use of new special polyimides for the production of cast films and coatings.

Use of special polyimides as cast films and coatings

The invention relates to a method for the production of shaped plastic parts which are provided with an antistatic adhesive thermoplastic coating; according to the method, the adhesive thermoplastic coating is coated with a solution which contains a binder and a suitable oxidant for the oxidative polymerization of 5- or 6-membered heterocyclic compounds which have nitrogen or sulphur as heteroatoms, and the coating thus obtained is treated with a solution of the 5- or 6-membered heterocyclic compound.

Method for antistatic finishing of adhesive thermoplastic coatings

The invention relates to a process for the preparation of plastic mouldings, preferably plastic films, antistatically treated with a transparent layer of polypyrrole; the process is characterized by a certain combination of special measures which are coordinated with one another.

Process for antistatic treatment of plastic mouldings

This invention relates to carbon-containing moulded bodies based on thermoplastic polycarbonates and thermoplastic polyalkylene terephtalates with an addition of carbon black and graphite and to a process for the production of these moulded bodies.

Moulded bodies containing carbon

Growing community of inventors

Cologne, Germany

Werner Waldenrath