Bayer Aktiengesellschaft

Covestro Deutschland Ag

Bayer Materialscience Ag

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Corporation

Bayer Intellectual Property Gmbh

Miles Inc.

Covestro LLC

Ralf Hufen

Wolfgang Ebert

Andreas Seidel

Thomas Eckel

Gerhard Fennhoff

Sven Hobeika

Klaus Horn

Klaus Kircher

Pierre Moulinie

Rudiger Schubart

Klaus D Berg

Charles E Lundy

Timo Kuhlmann

Hans-Jürgen Thiem

Derk Erich Wandner

Heidemarie Pantke

Mathieu Jung

Dieter Wittmann

Rolf Wehrmann

Helmut-Werner Heuer

Harald Pielartzik

Wilfried Haese

Wolfgang Alewelt

Rainer Neumann

Richard Weider

Michael Prein

Hermann Kauth

Frieder Heydenreich

Rick L Archey

Wolfgang Nising

Achim Feldermann

Steffen K&uuml;hling

Siegfried Anders

Tony Van Osselaer

Rolf Lanze

Rüdiger Gorny

Claus Rüdiger

Aaron D Meltzer

Stephan Konrad

Jürgen Röhner

Uli Franz

Franky Bruynseels

Johannes Scherer

Douglas G Powell

Marco Roelofs

Jens Hepperle

Joachim Simon

Jan Helmig

Marius Nolte

Dirk-Jacques Dijkstra

Markus Krieter

Helmut M&uuml;nstedt

Peter Gebauer

Ru Digerart

Sylvia Braun

Peter Rolf

The invention relates to a composition containing A) 60 to 80 wt. % of a polyester on the basis of terephthalic acid and at least one dianhydrohexitol and optionally additional diols, B) 10 to 30 wt. % of a polyester on the basis of succinic acid and at least one aliphatic, araliphatic or cycloaliphatic diol, and C) 3 to 12 wt. % of at least one mineral reinforcing material on the basis of talcum. The invention also relates to a method for producing a molding compound from the composition, to the molding compound itself and to moldings obtainable from the composition or the molding compound.

Mineral-reinforced co-polyester blend

The invention relates to a thermoplastic composition comprising A) aromatic polycarbonate, B) 0.1 to 5 wt.-% one or more polyether polyol(s) and C) one or more thermal stabilizer(s) selected from the group consisting of thio compounds excluding the following component D, characterized in that the composition additionally comprises D) 3,3'-thiodipropionic acid, wherein the total amount of components C plus D is 0.01 to 1.0 wt.-%. The invention also relates to medical technology products or parts of medical technology products consisting of such compositions as well as to a process for sterilization of such moulded parts by means of irradiation. The polycarbonate compositions according to the invention show significantly less yellowing after irradiation than known compositions.

By means of ionizing radiation sterilizable moulded parts made from polycarbonate

The invention relates to a thermoplastic composition comprising A) aromatic polycarbonate, B) 0.1 to 5 wt.-% one or more polyether polyols and C) 0.01 to 0.30 wt.-% 3,3'-thiodipropionic acid. The invention also relates to medical technology products or parts of medical technology products consisting of such compositions as well as to a process for sterilization of such moulded parts by means of irradiation. The polycarbonate compositions according to the invention show significantly less yellowing after irradiation than known compositions and still have good mechanical properties.

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 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

Compositions are provided comprising A) at least one polymer selected from the group consisting of aromatic polycarbonate and aromatic polyester carbonate, B) at least one mixture comprising at least one butadiene-based graft polymer prepared by emulsion, suspension or solution polymerization and at least one polybutadiene-free vinyl (co)polymer, and C) at least one polymer additive, where the polybutadiene content based on the sum total of the parts by weight of components A and B is 10% to 20% by weight, and where the total content of butadiene-free vinyl (co)polymer from component B based on the sum total of the parts by weight of components A and B is 12% to 23% by weight. Composite components formed from these compositions and a polyurethane layer, which are notable for improved adhesion between the two layers, and a process for producing the composite components are also provided.

Polycarbonate compositions having improved adhesion to polyurethane layers

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

Flame-retardant polycarbonate-polyester compositions

The present invention relates to compositions and composite components formed from these compositions and a polyurethane layer, which are notable for improved adhesion between the two layers, and a process for producing the composite components.

Hydrolysis-stable polycarbonate-polyester compositions

Polymer compositions with improved lacquer adhesion comprising

Polymer compositions with improved adhesion

The present invention relates to compositions comprising

Impact-modified polyalkylene terephthalate/polycarbonate compositions

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

Growing community of inventors

Duisburg, Germany

Ralf Hufen