Covestro Deutschland Ag

Bayer Materialscience Ag

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Aktiengesellschaft

Bayer Intellectual Property Gmbh

Sms Group Gmbh

Schmidt + Clemens Gmbh & Co. Kg

Covestro Ag

Covestro LLC

Sms Siemag Aktiengesellschaft

Alexander Meyer

Klaus Horn

Rafael Oser

Rolf Wehrmann

Ulrich Grosser

Timo Kuhlmann

Dirk Hinzmann

Joerg Reichenauer

Thomas Pfingst

Wolfgang Ebert

Wilfried Haese

Ulrich Liesenfelder

Peter Capellen

Ulrich Blaschke

Friedrich-Karl Bruder

Rainer Hagen

Alexander Karbach

Michael Erkelenz

Michael Wagner

Claus Rüdiger

Thomas König

Stephan Konrad

Thomas Eckel

Andreas Seidel

Helmut-Werner Heuer

Thomas Grimm

Gunther Stollwerck

Heinz Pudleiner

Helmut Werner Heuer

John Mitchell Huggins

Reiner Rudolf

Jan Heijl

Peter Schwarz

Bert Ruytinx

Uli Franz

Harald Pielartzik

Klaus Meyer

Michael Prein

Hermann Kauth

Karlheinz Hildenbrand

Peter Fischer

Anke Boumans

Hans-Jürgen Thiem

Martin Döbler

James Y J Chung

Frank Buckel

Melanie Möthrath

Heinrich Hähnsen

Roland Brambrink

Tim Hungerland

Franky Bruynseels

Andreas Klein

Vincenzo Taravella

Gianmaria Malvestiti

Birte Sämisch

Berit Krauter

Annabelle Bertin

Massimo Tironi

Christian Bilgen

Florian Dorin

Birgit Meyer Zu Berstenhorst

Luc Neumann

Sebastian Wetzel

Andrea Scagnelli

Helmut Einberger

Jörg Reichenauer

Rainer Protte

Michael Roppel

Christopher Schirwitz

Tilmann Böcher

Gesa Dern

Raymond Wong

Ice Zhang

Claus-Ludolf Schultz

Melanie Moethrath

Sven Gestermann

Stefaan De Vos

Manfred Nawroth

Andreas Frankenau

Dieter Rühle

Martin Doebler

Klaus Kraner

Christoph Klinkenberg

Benjamin Herzberg

Marc Schinner

Marcel Gathmann

Matthias Voetz

Rainer Mellis

Delef Michalski-Vollmer

Wolfgang Schroemges

Pete Fischer

Stefan Mohr

Christian Eh

Burkhard Reitze

Werner Heuer Helmut

Jos M J Paulusse

Andrea Crotti

Kilian Kaupper

The present invention relates to a process for preparing a polyester carbonate on the basis of aliphatic diacids and aliphatic diols and to the polyester carbonate prepared according to the process and to a moulding mass and moulding body containing the polyester carbonate. The process according to the invention is a direct synthesis in which all structural elements forming the subsequent polyester carbonate are already present as monomers in the first process step and in which two catalysts are used.

Polyester carbonates from aliphatic diacids and aliphatic diols, and process for the production thereof

A sensor system comprises a LiDAR unit, a camera for visible light and a cover through which light arrives at the LiDAR unit and the camera. The cover comprises a layer containing dyes. The light transmission of the cover in the range from 380 nm to 780 nm is 3% to 25% and in the range from 380 nm to 1100 nm is 40% or more. The attenuation of the LiDAR signal by the cover is such that at least 65% of the original signal intensity reaches the LiDAR detector. The layer containing dyes contains a composition comprising i) at least 70% by weight of a transparent thermoplastic polymer, ii) at least one green and/or red dye and iii) at least one red and/or violet dye. The product of the sum of the weight % fractions of dyes ii) and iii) and the thickness of the layer containing dyes is 0.041 to 0.12 wt % mm. Finally, the composition contains 0% to 0.0005% by weight of IR absorbers.

IR-transparent sensor and camera system for motor vehicles

The present invention relates to a method for preparing a polyester carbonate starting from cycloaliphatic diacids and aliphatic diols and to the polyester carbonate prepared by the method. The method according to the invention is a direct synthesis in which all the structural elements that form the subsequent polyester carbonate are already present as monomers in the first step of the method.

Polyester carbonates from cycloaliphatic diacids and aliphatic diols, and process for preparing same

The invention relates to a sensor system () for a motor vehicle, comprising a sensor housing and an active or passive sensor () arranged therein and held on a movable sensor holder (), having a sensor technology based on radiation detection and a measurement apparatus assigned to the sensor () and a control apparatus, coupled to said measurement apparatus, for the sensor holder (), wherein the sensor housing has a cover () that is signal-transmissive for the sensor () on its side located in the detection direction of the sensor (), and wherein the detection range () of the sensor () in the region of the signal-transmissive cover () has a lower extent than the signal-transmissive cover (), wherein the sensor system () is characterized in that the measurement apparatus is designed such that it is suitable for checking, in the detection range of the sensor (), whether and in which section the signal-transmissive cover () has a region with reduced signal transmissivity (), wherein the measurement apparatus interacts with the control apparatus in such a way that the control apparatus is able to change the position of the sensor () in such a way that the region with reduced signal transmissivity () lies outside the detection range () of the sensor (). The invention furthermore relates to a method for operating such a sensor system () and to a motor vehicle that is equipped with such a sensor system ().

Surroundings sensor with a movable sensor unit for motor vehicles

The invention relates to opaque colored multilayer articles having a substrate layer based on polycarbonate or polymethylmethacrylate. The compositions of the substrate layer contain a titanium dioxide having particular properties as white pigment. Compared to the Kronos® 2230 white pigment which is conventionally used as white pigment for corresponding compositions and has more particularly been specially matched to polycarbonate, it is possible to achieve considerably higher weathering stability of the colored shaped bodies provided that a UV absorber-containing coating has been applied to the substrate layer. Color stability and gloss are maintained even after weathering, and brilliant colors can thus be assured.

Opaque multi-layer body made of polycarbonate and having weathering stability

The invention relates to a sensor system () for a vehicle, in particular a motor vehicle, comprising a sensor housing and an active or passive sensor () arranged therein, having a sensor technology based on radiation detection and a measurement apparatus assigned to the sensor (), wherein the sensor housing has a cover () that is signal-transmissive for the sensor () on its side located in the detection direction of the sensor (), and wherein the detection range of the sensor () in the region of the signal-transmissive cover () has a lower extent than the signal-transmissive cover (), wherein the sensor system () is characterized in that the sensor () is assigned a movable deflection apparatus (), coupled to a control apparatus, for deflecting the radiation of the sensor (), wherein the measurement apparatus is designed such that it is suitable for checking, in the detection range of the sensor (), whether and in which section the signal-transmissive cover () has a region with reduced signal transmissivity (), wherein the measurement apparatus interacts with the control apparatus of the deflection apparatus () in such a way that the control apparatus is able to change the position of the deflection apparatus () in such a way that the region with reduced signal transmissivity () lies outside the detection range of the sensor (). The invention furthermore relates to a method for operating such a sensor system () and to a motor vehicle that is equipped with such a sensor system ().

Surroundings sensor with a movable deflection apparatus for motor vehicles

The present invention relates to a method for preparing a polysiloxane-polycarbonate block co-condensate, wherein a siloxane component containing both aliphatic and aromatic groups is used as a mediator. The invention also relates to a polycarbonate composition and also to the use of the special siloxane component for reducing the particle size distribution of the siloxane domains in a polysiloxane-polycarbonate block co-condensate.

Siloxane-containing block copolycarbonates having a small domain size

The invention relates to a composition obtainable by mixing polycarbonate, unsized talc and a specific anhydride-modified alpha-olefin polymer, wherein the amounts of the talc and the specific anhydride-modified alpha-olefin polymer are matched to one another such that, for every 10 parts by weight of the talc, 0.10 to 1.4 parts by weight of the anhydride-modified alpha-olefin polymer are used. It has been shown that in situ sizing of talc with the wax can minimize the degradation of the polycarbonate only in the course of mixing with the polycarbonate and, at the same time, properties such as multiaxial impact resistance and flowability can be improved.

Polycarbonate composition comprising talc

The invention relates to a vehicle utilizing a LiDAR sensor system for driver assistance systems. A composition consisting of a thermoplastic material based on polycarbonate is used here for forming the substrate layer of a cover for the sensor with respect to the surroundings. The cover has a polysiloxane-based topcoat layer comprising a combination of organically modified silane with a silica sol, the silicon dioxide having a d90 particle size of less than 0.50 micron, in order to achieve high abrasion resistance and weathering stability.

Device comprising a multi-layer body and a LiDAR sensor

The present invention relates to a method for producing a cycloaliphatic diester, to a method for producing a polyestercarbonate using the one cycloaliphatic diester, to the use of a cycloaliphatic diester for producing polyestercarbonates and also to a polyestercarbonate. The method according to the invention is here in particular characterized in that the cycloaliphatic diester is separated by means of distillation from the reaction mixture.

Process for preparing a cycloaliphatic diester

The invention relates to a composition for production of a thermoplastic moulding compound, wherein the composition comprises or consists of the following constituents: to the moulding compound itself, to the use of the composition or moulding compound for production of moulded articles and to the moulded articles themselves.

SiCoPC blend containing phosphazene and silicone/acrylate impact modifier

The invention relates to a vehicle utilizing a LiDAR sensor system for driver assistance systems. A composition consisting of a thermoplastic material based on polycarbonate, polyester carbonate and/or polymethylmethacrylate is used here for forming a cover for the sensor against the surroundings.

Laser beam-permeable substrate material for use on sensors

The invention relates to transparent multilayer structures and glazings or glazing elements comprising said multilayer structures, which are suitable for screening an indoor space from a radiation source, comprising, in this order a) optionally a protective layer a, b) a substrate layer based on a thermoplastic polymer, especially an aromatic polycarbonate, having a luminous transmittance in the range of 380 to 780 nm of at least 0.3%, determined at a layer thickness of 4 mm according to DIN ISO 13468-2:2006 (D65, 10&#xb0;), and a TDS value of less than 40%, determined according to ISO 13837:2008 at a layer thickness of 4 mm, the substrate layer containing at least 0.001 wt. % of an IR absorber different from carbon black, c) if necessary, another layer c based on a thermoplastic polymer with a maximum thickness of 600 &#x3bc;m, d) at least one metal layer d, containing at least one element selected from the group including Ag, Al, Au, Pt, Fe, Cr, Sn, In, Ti, Pd, Nb, Cu, V or their alloys, the sum of thicknesses of all metal layers being 1 nm to not more than 30 nm, and e) optionally a protective layer e, at least 60% of the substrate layer b being covered by metal layer d, the layers following layer d, including the protective layer e, when added up, having a thickness of not more than 100 nm and the metal layer being applied to the side of the substrate layer b designed to be on the face of the multilayer structure facing away from the radiation source.

Transparent multilayer structure for thermal management

The invention relates to the use of branched aliphatic hydrocarbons such as squalane in compositions based on thermoplastic polymer, in particular on polycarbonate, which are used for producing molded parts used in LED lighting units, such as covers for instance. According to the invention it has been found that the use of branched aliphatic hydrocarbons makes it possible to enhance the total transmission and the transmission in the range from 360 to 460 nm, thus making corresponding compositions particularly suitable for producing molded parts for use in combination with white LED light sources. It has additionally been shown that yellowing and haze are simultaneously reduced.

Covers for LED light sources

The invention relates to a vehicle body part, comprising a multi-layer body, comprising, in this order, a) optionally a protective layer a, b) a substrate layer b based on a thermoplastic polymer, having a light transmittance of less than 1.0% in the range of 380 to 780 nm, determined at a layer thickness of 4 mm in accordance with DIN ISO 13468-2:2006 (D65, 10&#xb0;), and an energy transmittance TDS of less than 40%, determined in accordance with ISO 13837:2008 at a layer thickness of 4 mm, c) optionally a further layer c based on a thermoplastic polymer having a maximum thickness of 600 &#x3bc;m, d) a metal layer d, containing at least one element selected from Ag, Al, Au, Pt, Fe, Cr, Sn, In, Ti, Pd, Nb, Cu, V, stainless steel or alloys thereof, having a thickness of 40 nm to 500 &#x3bc;m, and e) optionally a protective layer e, wherein the metal layer d is arranged on the side of the multi-layer body that is intended to be oriented toward the vehicle interior and wherein the layers following the layer d), including the protective layer e, have a total thickness of at most 50 nm.

Opaque multi-layer body of polycarbonate for heat management

Growing community of inventors

Düsseldorf, Germany

Alexander Meyer