Bayer Aktiengesellschaft

Bayer Materialscience Ag

Siegfried Anders

Wolfgang Nising

Rüdiger Gorny

Wolfgang Ebert

R&uuml;diger Gorny

Wilfried Haese

Jurgen Kirsch

Claus Rüdiger

Melanie Möthrath

Jürgen Röhner

Hartmut Lower

Marco Roelofs

J&uuml;rgen R&ouml;hner

Rolf Dhein

Rolf Wehrmann

Burkhard Kohler

Peter Bier

Helmut-Werner Heuer

Ralf Hufen

Steffen Kuhling

Peter Capellen

Robert Maleika

James P Mason

Wolfgang Beer

Martin Döbler

Helmut Schmid

Peter Schwarz

Werner Verhoeven

Heidemarie Pantke

Sylvia Braun

Hartmut L&ouml;wer

A multilayer product characterized by its improved weatherability and mechanical properties is disclosed. The product contains a layer A containing a member selected from the group consisting of transparent thermoplastic material and a lacquer, the member containing at least one UV absorber, a layer B containing a transparent thermoplastic material and containing at least one colorant, and a layer C containing a transparent thermoplastic material. Also disclosed is a process for the preparation of the inventive multilayer product.

Multi-layer weather-resistant, coloured panel

A multi-layer article is disclosed. The article contains a base layer that contains at least one thermoplastic resin and a second layer containing a thermoplastic (co)polyformal superimposed over the base layer. The (co)polyformal conforms to formulae (1) or (1), in which O-D-O and O-E-O independently denote a diphenolate group, -D- and -E- independently denote an aromatic group having 6 to 40 carbon atoms, k is a whole number from 1 to 1500, o stands for numbers from 1 to 1500, and m is z/o and n is (o-z)/o wherein z is 0 to o.

Polyformals as a coextrusion protective layer on polycarbonate

A thermoplastic molding composition characterized by its optical brightness and good weathering resistance is disclosed. The composition contains a poly(ester) carbonate an optical brightener conforming to  

Polycarbonate or polyester carbonate containing optical brighteners

A transparent sheet having improved optical properties is disclosed. The sheet that features a deviation angle &#x3b1;(min) according to DIN 52305-A-AS of &#x2266;2.0 and a refracting power D(min) according to DIN 52305-A-AZ of &#x2266;0.05, is prepared by extruding a molding composition comprising linear (co)polycarbonate having weight average molecular weight of 25,000 to 31,000.

Molded polycarbonate articles having improved optical and processing properties

A thermoplastic molding composition especially suitable for preparing extruded articles is disclosed. The composition contains polycarbonate, a fatty acid ester and a triazine conforming to formula (I)

Compositions containing polycarbonate

Compositions containing polycarbonate and one or more esters derived from a linear carboxylic acid and branched alcohol are disclosed. The inventive compositions feature improved processing properties and are especially suitable for preparing extruded articles.

A thermoplastic molding composition comprising polycarbonate and 50 ppm to 300 ppm, in relation to the weight of the composition, of diphenyl carbonate is disclosed. The composition is especially suitable for the preparation of extruded sheets, in particular coextruded.

Polycarbonate containing diphenyl carbonate and sheets made therefrom

A multilayered article made of a plastic material which exhibits high IR reflection and a high gloss is disclosed. The article includes at least three layers A, B and C, wherein layer A contains a transparent thermoplastic plastics material, and wherein layer B contains a transparent thermoplastic plastics material and a pigment which consists of a transparent support material and a titanium dioxide layer of thickness 150 to 200 &#x3bc;m, and where layer C contains a transparent thermoplastic plastics material.

Multilayered article

A polycarbonate molding having improved optical properties is disclosed. The molding features an angle of deflection &agr; (min) determined in a accordance with DIN 52305-A-AS of &lE;2.0 and a refractive index D (min) determined in accordance with DIN 52305-A-AZ of &lE;0.05. The molding is prepared from a molding composition that contains a branched polycarbonate having a weight average molecular weight of 25,000 to 40,000 and melt volume rate of 2 to 20 cm /10 min (300&deg; C.; 1.2 kg) determined in accordance with ISO 1133.

Polycarbonate molded bodies with improved optical properties

Polycarbonate moulding compounds

A method of using an extrudable thermoplastic compositions that contains a mixture of benzotriazoles is disclosed. The composition is suitable for producing sheets having improved surface quality.

Composition containing thermoplastic polymers

A process for the production of coated planar moldings of thermoplastics is disclosed. The process entails extrusion of a molded body, cooling of the molding, applying the aqueous-based coating agent and drying. The coating agent, having a pH value of less than 6, contains a salt of sulfondicarboxylic diester, a water-insoluble oxide of metal or semi-metal and an acid/water mixture. It is applied to at least one surface of the molding immediately after the production of the molding and with the aid of an application roll.

Water-dispersing coated shaped bodies

A polycarbonate molding composition containing a UV absorber and two types of mold release agents is disclosed. The composition is suitable for use as coating or external layer on coextruded sheets.

Polycarbonate moulding compounds and their use as layers in coextruded sheets

The invention relates to a process for the production of multilayer plastic sheets from special branched polycarbonates.

Growing community of inventors

Kö'ln, Germany

Siegfried Anders