Bayer Aktiengesellschaft

Bayer Materialscience Ag

Covestro Deutschland Ag

Agfa-gevaert Ag

Agfa Gevaert Nv

Bayer Intellectual Property Gmbh

H.c. Starck Gmbh

Bayeraktiengesellschaft

Robert Boschgmbh

Bayer Corporation

Miles Inc.

H. C. Starck, Gmbh & Co Kg

Stratasys, Inc.

Covestro Intellectual Property Gmbh & Co. Kg

Heraeus Precious Metals Gmbh & Co. Kg

Rolf Wehrmann

Helmut-Werner Heuer

Andreas Elschner

Helmut Werner Heuer

Anke Boumans

Ralf Dujardin

Yun Chen

Michael Erkelenz

Friedrich-Karl Bruder

Friedrich Jonas

Alexander Meyer

Burkhard Kohler

Geert H Defieuw

Harald Pielartzik

Alexander Karbach

Herman J Uytterhoeven

Dirk Achten

Wolfgang Ebert

Klaus Horn

Rolf Dhein

Andreas Seidel

Dittmar K Nerger

Thomas Büsgen

Silke Kratschmer

Knud Reuter

Hans J Rosenkranz

Herbert Hugl

Richard Weider

Dirk Cyriel Quintens

Steffen K&uuml;hling

Bavo A Muys

Robert J Kumpf

Karl-Heinz Köhler

Martin Deussen

Martin Hueppauff

Dittmar Nerger

Heinrich-Christian Schopper

Christoph Jonda

Ulrich Blaschke

Siegfried Thurm

Timo Kuhlmann

Annett K&ouml;nig

Stephan Konrad

Marco Roelofs

Heinz Pudleiner

Thomas Scholl

Hans-Werner Schmidt

Walter Schafer

Douglas A Wicks

Wilfried Haese

David R Terrell

Wolfgang Alewelt

Eckhard Wenz

Etienne A Van Thillo

Jurgen Kirsch

Helmut-Martin Meier

Ralf Hufen

Klaus Wussow

Rafael Oser

Wolfgang Nising

Peter Reichert

Robert Horst Bloodworth

Siegfried Anders

Mukundan Thelakkat

Peter Fischer

Thomas Elsner

Nicolas Degiorgio

Thomas Grimm

Gunter Klug

Eberhard Kuckert

Rüdiger Gorny

Lothar Bunzel

Claus Rüdiger

Christian Münnich

Kai Butje

Martin Döbler

Holger Ohst

Klaus Sommer

Hans-Ulrich Siegmund

Marc Buts

Melanie Möthrath

Jürgen Röhner

Hartwig Andries

Tim Hungerland

Ullrich Scherf

Bert Ruytinx

Birte Sämisch

Matthias Knaupp

Meinhard Rolf

Tanja Cassel

Matthias Kocher

Christopher Schirwitz

Melanie Moethrath

Matthias Rothe

Robert Kumpf

Hermann Uytterhoeven

Hans-Rytger Kricheldorf

Hans Franssen

Etienne Van Thillo

Rolf Dheim

Multilayer composite material comprising specific polycarbonate compositions as matrix material The present invention relates to a composite material comprising one or more fibre layers composed of a fibre material and an aromatic polycarbonate-based matrix material. The fibre layer(s) is/are embedded in the matrix material. The present invention further relates to a process for producing these fibre composite materials, to multilayer composite materials comprising several layers of fibre composite material, and to the use of the composite materials for production of components or housing components or housings, and to the components, housing components or housings themselves.

Multilayer composite material containing special polycarbonate compositions as a matrix material

The present invention relates to a composite material comprising one or more fibre layers composed of a fibre material and an aromatic polycarbonate-based matrix material. The fibre layer(s) is/are embedded in the matrix material. The present invention further relates to a process for producing these fibre composite materials, to multilayer composite materials comprising several layers of fibre composite material, and to the use of the composite materials for production of components or housing components or housings, and to the components, housing components or housings themselves.

The invention relates to a method for producing an object by means of a fused deposition modeling method (FDM), from a construction material, wherein the construction material comprises a polycarbonate and a di-glycerol ester. The invention also relates to the use of a polycarbonate with improved flowability comprising a diglycerol as construction material in an additive fused deposition modeling method.

Method for producing an object by means of an additive manufacturing process using a polycarbonate building material with improved flowability

The present invention relates to thermally conductive, graphite-containing polycarbonate compositions having high flowability and mouldings for the electricals and electronics industries for heat management, in particular for complex cooling plates, heat sinks and housings in lighting technology. The compositions according to the invention are in particular also suitable for thin wall designs. The compositions contain at least one saturated or unsaturated monocarboxylic acid having a chain length of 6 to 30 carbon atoms and at least one ester of this monocarboxylic acid based on glycerol and/or diglycerol.

Graphite-containing polycarbonate compositions containing a new type of flow promoter

A method for producing an object with layers of different materials in an additive manufacturing process comprises the following steps: &#x2022;I) providing a construction material heated at least in part to a temperature above its glass transition temperature on a substrate, so that a layer of the construction material is obtained which corresponds to a first selected cross section of the object; &#x2022;II) providing a construction material heated at least in part to a temperature above its glass transition temperature on a previously provided layer of the construction material, so that another layer of the construction material is obtained which corresponds to another selected cross section of the object and which is connected to the previously provided layer; &#x2022;III) repeating step II) until the object is formed. In the individual steps II) in the method, the construction material is selected each time from a first construction material and a second construction material different from the first, the first construction material being a polycarbonate, polyester, polyester carbonate, polyimide, polylactic acid, polyvinyl chloride, polystyrene, polymethyl(meth)acrylate or mixtures of at least two thereof. Step II) is carried out at least once with the first construction material and step II) is carried out at least once with the second construction material. The invention further relates to an object that is obtainable using the method described above.

Layered manufacturing process for an object with different layer material and object with different layer material

A process for manufacturing an article, comprising the step of manufacturing the article via an additive fabrication process from a structural material, is notable in that the structural material comprises a polymer selected from the following group: (co)polycarbonates, polyesters, polyestercarbonates, polyformals, polyamides, polyethers, polyvinyl chloride, polymethyl (meth)acrylate, polystyrene or a combination of at least two thereof and an additive absorbing infrared radiation. The additive absorbing infrared radiation is selected for its chemical structure and its concentration in the structural material such that it reduces transmission by the structural material of light in the wavelength range between 600 nm and 1700 nm, determined on a sample 100 &#x3bc;m thick, by &#x2265;2.5 percentage points relative to a structural material sample with a thickness of 100 &#x3bc;m that does not contain the additive absorbing infrared radiation. During the additive fabrication process the structural material is exposed at least temporarily to infrared radiation in the wavelength range between 600 nm and 1700 nm. An article obtainable by a process as described above is notable for its production from a structural material which comprises a polymer selected from the following group: (co)polycarbonates, polyesters, polyestercarbonates, polyformals, polyamides, polyethers, polyvinyl chloride, polymethyl (meth)acrylate, polystyrene or a combination of at least two thereof and an additive absorbing infrared radiation, where the article, in the direction of its construction in the additive manufacturing process used to make it, has a tensile strength (ISO 527) which is &#x3e;30% to . . . 100% of the tensile strength (ISO 527) of a specimen injection-moulded from the same structural material.

Additive fabrication process with a structural material comprising an IR absorber

The invention relates to glass-fibre- and/or carbon-fibre-reinforced polycarbonate compositions having improved flowability coupled with good heat resistance and to articles of manufacture produced from said compositions, in particular those from the thin wall applications sector, for example housing parts for ultrabooks or smartphones. The compositions comprise at least one saturated or unsaturated monocarboxylic acid having a chain length of 6 to 30 carbon atoms and at least one ester of these monocarboxylic acids based on glycerol and/or diglycerol.

Polycarbonate compositions containing a carboxylic acid and their glycerol or diglycerol esters

The invention relates to compositions containing polycarbonate and carboxylic acid esters of isosorbide, to the use of the compositions for the production of blends or shaped parts and to molded parts obtained therefrom. The compositions have improved rheological and optical properties and an improved demolding and processing behavior in the injection-molding process.

Poycarbonate compositions containing isosorbide diesters

The invention relates to polycarbonate compositions having high flowability and good thermal properties, comprising specific glycidyl ether compounds and typically at least one additive from the group of the thermal stabilizers, UV stabilizers and/or demoulding agents, and to mouldings made from these compositions. The polycarbonate compositions have high flowability and good thermal properties. The invention also relates to the improvement in the flowability of polycarbonate melts.

Polycarbonate compositions containing polyglycidyl ether

The present invention relates to the use of diglycerol esters to enhance the flowability of graphite-containing, thermally conductive polycarbonate compositions. Melt viscosities and melt volume flow rates are improved.

Improving the flowability of thermoconductive polycarbonate compositions

The invention relates to copolycarbonate compositions having cyclic and linear oligomers and improved optical properties, to their use for producing blends and moldings and to moldings obtained therewith. The copolycarbonate compositions comprise (A) 5% to 99% by weight, based on the total weight of the copolycarbonate composition, of a copolycarbonate containing one or more monomer units of the formula (1) wherein Ris hydrogen or C-C-alkyl, Ris C-C-alkyl, and n is 0, 1, 2 or 3 and (B) 95% to 1% by weight, based on the total weight of the copolycarbonate composition, of a (co)polycarbonate containing one or more monomer units of the general formula (2) wherein Ris H or linear or branched C-Calkyl and Ris linear or branched C1-C10 alkyl.

Copolycarbonate compositions with cyclic and linear oligomers and improved optical properties

The invention relates to polycarbonate compositions with an improved thermal behavior and improved slip characteristics, achieved by the use of oxidized, acid-modified polyethylene waxes.

Polycarbonate compositions containing polyethylene wax

The invention relates to a multi-layer film composite having at least one layer made of polycarbonate or copolycarbonate, characterized in that the polycarbonate or copolycarbonate comprises at least one additive of the general formulas (1) to (8), R1 are selected independently of each other from the group made of C10-C25-alkyl, C10-C25-alkoxy, and C10-C25-alkyl-substituted aryl, R2 are selected independently of each other from the group of C10-C25-alkylcarbonyl or hydrogen, and R3 are selected independently of each other from the group of C10-C25-alkyl.

Multi-layer film composite having a polycarbonate layer

The present invention relates to the use of diglycerol esters for enhancing the flowability of transparent polycarbonate compositions. Melt viscosities and melt volume flow rates are improved. In addition, the diglycerol esters also exert a positive effect on the optical properties by increasing the transmission of the compositions and reducing the yellowness index.

Flowability of polycarbonate compositions

The invention relates to copolycarbonate compositions having branch structures and linear oligomers and improved flow properties, to their use for producing blends and moldings and to moldings obtained therewith.

Copolycarbonate compositions with branch structures and linear oligomers and improved rheological properties

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Krefeld, Germany

Rolf Wehrmann