Covestro Deutschland Ag

Bayer Materialscience Ag

Bayer Intellectual Property Gmbh

Covestro Intellectual Property Gmbh & Co. Kg

Anke Boumans

Rolf Wehrmann

Helmut Werner Heuer

Michael Erkelenz

John Bauer

Alexander Meyer

Helmut-Werner Heuer

Thomas Grimm

Martin Döbler

Matthias Knaupp

Hans Franssen

Peter Weimar

Lucia Winkler

Martin Burger

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 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

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 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

The invention relates to (co)polycarbonate compositions and molding compounds, characterized by improved rheological properties and a high heat deflection temperature.

High-temperature (co)polycarbonates with improved rheological properties

The invention relates to (co)polycarbonate compositions and molding compounds, characterized by improved theological properties and a high heat deflection temperature.

High-temperature (co)polycarbonates containing phthalimide and having improved rheological properties

The invention relates to polymer compositions for the production of mouldings, in particular spectacles and eye-protection equipment, which comply with the provisions of EN 169 (welder protection standard) and EN 1836/2005 (signal light detection). The compositions and mouldings are in particular processable at temperatures above 265&#xb0; C., recyclable and have a notched impact strength of at least 65 kJ/cm, and they comply with the required optical standards mentioned above.

Polymer composition with heat-absorbing properties

The present invention relates to polycarbonate compositions and copolycarbonate compositions having improved optical properties, and to their production and their use for the production of shaped parts, and to shaped parts which can thereby be obtained, the compositions containing a polycarbonate or copolycarbonate which comprises bisphenol-A and at least one pair of a phosphorus compound having the oxidation number +3 and a phosphorus compound having the oxidation number +5, and the phosphorus compound having the oxidation state +5 in a pair respectively corresponding to the oxidized form of the phosphorus compound having the oxidation state +3 and the amount of more highly oxidized compound contained being less than that of the compound with the lower oxidation number.

Growing community of inventors

Goch, Germany

Anke Boumans