Bayer Aktiengesellschaft

Bayer Materialscience Ag

Covestro Deutschland Ag

Bayer Intellectual Property Gmbh

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Intellectual Proeprty Gmbh

Andreas Seidel

Thomas Eckel

Dieter Wittmann

Eckhard Wenz

Achim Feldermann

Ralf Hufen

Hans-Jürgen Thiem

Michael Zobel

Holger Warth

Bernd Keller

Evgueni Avtomonov

Reiner Rudolf

Torsten Derr

Uli Franz

Kristina Pupovac

Herbert Eichenauer

Wolfgang Podszun

Rolf Wehrmann

Alexander Meyer

Sven Hobeika

Gisbert Michels

Manfred Dietrich

Helmut Werner Heuer

Michael Bierdel

Detlev Joachimi

Peter Capellen

Evgeny Avtomonov

Joerg Reichenauer

Michael Erkelenz

Jochen Endtner

Michael Wagner

Wolfgang Ebenbeck

Gunther Stollwerck

Jan Heijl

Martin Döbler

Hans-Juergen Thiem

Hans-Juergen Klankers

Marc Vathauer

Ingmar Hermsdorfer

Uwe Peucker

Birgit Mannel

Burkhard Thuermer

Lars Frye

Jörn Stölting

Rainer Protte

Christoph Schwemler

Marina Reithmeier

Juan Gonzalez-Blanco

Käthe Baumann

Hans-Jürgen Klankers

Hartwig Kempkes

Kamelia Karlou-Eyrisch

Martin Doebler

Volker Altstädt

Annabelle Bertin

Birgit Derfuss

Joachim Simon

Jörg Reichenauer

Peter Weimar

Manfred Nawroth

Tobias Bubmann

Ernst-Ulrich Reisner

Philipp Moeller

Martin Haussler

Wolfgang Schwartmann

Philipp Möller

Dirk Kurzidim

Klaus Kircher

Eckard Wenz

Mandy Gieler

Achim Gustorf

Katrin Petzel-Maryniak

Bruce L Hager

Hans-Jurgen Thiem

David Harrison

M Sc Tobias Bubmann

Tobias M Sc Bubmann

Stephanie BÄRWINKEL

Merve Aksit

Martin HÄUßLER

Holger Flat A 15/F The Harbourview Warth

The present invention relates to a composition for producing a thermoplastic moulding compound containing: A) an aromatic polycarbonate and/or aromatic polyester carbonate containing carboxy groups, wherein the polycarbonate has an acid value ranging from 0.5 to 10 mg of potassium hydroxide/g, determined in dichloromethane/ethanol as the solvent by means of potentiometric titration in accordance with DIN EN ISO 2114, method A in version 2002-06 with ethanolic potassium hydroxide solution at ambient temperature, and a weight-average molecular mass (M), determined by gel permeation chromatography at ambient temperature in dichloromethane as the solvent using a BPA polycarbonate standard, ranging from 15,000 to 40,000 g/mol, and B) a polymethyl methacrylate copolymer containing structural units derived from glycidyl methacrylate, wherein the copolymer has an epoxide equivalent weight, determined in dichloromethane as the solvent at ambient temperature in accordance with DIN EN 1877-1 in version 2000-12, of 0.05 to 3 wt % and a weight-average molecular mass (M), determined by gel permeation chromatography at ambient temperature in tetrahydrofuran as the solvent using a polystyrene standard, of 20,000 to 200,000 g/mol, wherein the weight ratio of component A and component B ranges from 95:5 to 35:65, and a method for producing a moulding compound from the composition, a moulding compound obtained according to the method, the use of the moulding compound to produce moulds, the moulds per se and a method for producing the moulds.

Composition and method for producing a transparent thermoplastic polycarbonate/polymethyl methacrylate moulding compound

The invention relates to a composite component that has improved bonding properties and includes a substrate (i) made of a thermoplastic polymer blend composition, and a coating (ii); in a layer located 5 to 10 &#x3bc;m below the boundary surface between the substrate (i) and the coating (ii), the substrate (i) has a dispersed, non-lamellar phase structure. The invention also relates to a method for manufacturing the composite component.

Composite component

The present invention relates to a composition, preferably a polycarbonate composition, for production of a thermoplastic moulding compound,

Composition and thermoplastic moulding compound for production of moulded articles having elevated gloss

The present invention relates to compositions comprising A) 50 to 90% by weight of at least one representative selected from the group consisting of aromatic polycarbonate, aromatic polyestercarbonate and aromatic polyester, B) 5 to 40% by weight of rubber-based graft polymer or a mixture of rubber-based graft polymer and rubber-free vinyl (co)polymer, C) 3 to 25% by weight of at least one polyether-based polymer or copolymer selected from the group consisting of polyether block polymers and polyether-based polyurethanes, D) 0.8 to 9% by weight of at least one pigment based on titanium dioxide, E) 0 to 20% by weight of one or more further additives, to the use of the compositions for producing moulded articles and to the moulded articles themselves.

Anti-static thermoplastic molding materials

The invention relates to a composition for production of a thermoplastic moulding compound, wherein the composition comprises or consists of the following constituents,

Composition and thermoplastic molding compound having good notch impact strength and improved melt stability

The invention relates to a composition for production of a thermoplastic moulding compound, wherein the composition comprises or consists of the following constituents:

Composition and thermoplastic molding compound having good low-temperature toughness, high gloss, and high processing stability

The invention relates to compositions containing (A) at least one polymer selected from the groups of aromatic polycarbonates and aromatic polyester carbonates and (B) at least one Bronsted-acidic compound, such as ethylenediaminetetraacetic acid (EDTA), and also relates to a process for producing compositions using components (A), (B) and optionally further components, wherein at least one of the employed components is alkaline or contains alkaline constituents, to compositions obtained by this process and to the use of the compositions for producing molded articles and to the molded articles themselves.

Polycarbonate compositions with improved stabilisation

The invention relates to a compounding method for producing impact-modified polycarbonate compositions using components acting as an alkali or using alkaline constituent-containing components. By using the method according to the invention, the harmful influence of the components acting as an alkali on the properties of polycarbonate molding compositions or the surface of molded bodies produced therefrom is counteracted. The method has the steps (i), (ii), and optionally (iii), wherein (i) in a first step A) 10 to 98 wt. % of at least one polymer selected from the group of aromatic polycarbonates and aromatic polyester carbonates, B) 0.001 to 0.3 wt. % of at least one organic Br&#xf8;nsted acid, i.e. a carbon and hydrogen-containing Br&#xf8;nsted acid, C) 0.0001 to 0.008 wt. % of at least one inorganic Br&#xf8;nsted acidic phosphorus compound, i.e. a Br&#xf8;nsted acidic phosphorus compound which does not contain carbon, D) 1 to 90 wt. % of at least one rubber-containing vinyl(co)polymerisate, E) 0 to 90 wt. % of at least one polyester, and F) 0 to 30 wt. % of at least one additive, the ratio of the weight percentages of the components B to C used in method step (i) ranging from 2 to 100, are heated by supplying thermal and/or mechanical energy, whereby at least the components A) and D) are melted and all of the components used are mixed together, dissolved into one another, or dispersed into one another, and in an additional step (ii), the melt (ii) resulting from method step (i) is resolidified by cooling and (iii) optionally granulated. The method steps (ii) and (iii) can be carried out in any order. The invention also relates to compositions produced according to the method, to the use thereof for producing molded bodies, to the molded bodies themselves, and to the use of the mixtures of B and C for stabilizing impact-modified polycarbonate compositions.

Method for producing polycarbonate molding compositions with improved thermal processing stability

The invention relates to compositions comprising

Antistatic and light-stable thermoplastic polycarbonate moulding compounds

Glass-fibre-reinforced polycarbonate moulding compositions with improved toughness

The invention relates to compositions consisting of A) 70 to 90 parts by weight of at least one polycarbonate, B) 10 to 30 parts by weight of at least one graft polymer containing a rubber-elastic particulate graft base, which contains diene, and containing a vinyl co(polymer) shell, C) 0 to 15 parts by weight of at least one additive, wherein the sum of the parts by weight of components A) and B) in the composition is normalized to 100. The invention further relates to the use of the compositions to produce components containing a plastic carrier and a multi-ply metal layer, and to molded bodies produced from the compositions.

Polycarbonate compositions for galvanic applications having a high requirement for heat distortion point

A masterbatch comprising pigment and demolding agent is provided. The demolding agent is selected from the group comprising low molecular weight polyolefin oils, low molecular weight polyolefin waxes, montan waxes and aliphatic or aromatic carboxylic acid esters of fatty acids and/or fatty alcohols, wherein the pigment content of the masterbatch is from 3 to 70 wt. %, based on the total weight of the masterbatch. The masterbatch is suitable for preparation of a polymer composition having improved pigment dispersion.

Process for improving carbon black dispersion

The invention relates to a method for producing compositions containing vinylaromatic copolymers which are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by an improved surface quality once the extruded polymer, before being granulated, or the granulate, after being granulated, has been moistened by bringing the polymer in contact with liquid water in a water bath, a tube system filled with water, or a dipping tank, thus making the compositions suitable for producing molded articles having a class A surface that remains flawless over time.

Method for the production of ABS compositions having an improved surface

The invention relates to a method for producing compositions containing vinyl-aromatic copolymers that are obtained in an emulsion polymerization process and comprise production-related salt inclusions. Said compositions are characterized by improved surface quality following storage in a warm-humid environment and are therefore suitable for producing molded articles having a class A surface that remains flawless over time.

Method for the production of ABS compositions having an improved surface following storage in a warm-humid environment

The invention relates to polymer compounds containing A) 0 to 98 parts by weight, based on the sum of A and B, of a thermoplastic polymer, or a mixture of a plurality of thermoplastic polymers differing from B, and B) 2 to 100 parts by weight, based on the sum of A and B, of B 1) at least one graft polymer produced by an emulsion polymerisation process, B2) optionally at least one graft polymer produced in a mass, suspension or solution polymerisation process, B3) optionally at least one rubber-free vinyl (co)polymer and (C) 0 to 30 parts by weight of at least one commercially available polymer additive, wherein the total of parts by weight A and B is 100.

Emulsion polymer containing compounds with improved surface after storage under warm and humid storage

Growing community of inventors

Dormagen, Germany

Andreas Seidel