Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Materialscience Ag

Thomas Pfingst

Alexander Meyer

Klaus Horn

Sebastian Wetzel

Helmut-Werner Heuer

Rainer Hagen

Helmut Werner Heuer

Rafael Oser

Ulrich Grosser

Peter Capellen

Dirk Hinzmann

Jan Heijl

Lothar Bunzel

Marc Buts

Melanie Möthrath

Vincenzo Taravella

Lydia Simon

Annabelle Bertin

Peter Snobl

Tobias Sadler

Andrea Crotti

Stefania Scotuzzi

Lukas Fabian Schulz

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 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 present invention relates to polysiloxane-polycarbonate block cocondensates comprising particular rearrangement structures and having improved rheological properties and melt stability as well as to mouldings and extrudates made from these polysiloxane-polycarbonate block cocondensates.

Polysiloxane-polycarbonate block cocondensates

The present invention relates to a process for preparing polysiloxane-polycarbonate block cocondensates proceeding from specific polycarbonates and hydroxyaryl-terminated polysiloxanes.

Process for preparing polysiloxane-polycarbonate block cocondensates

The present invention relates to a process for preparing polysiloxane-polycarbonate block cocondensates proceeding from specific polycarbonates and hydroxyaryl-terminated polysiloxanes in presence of a salt of a weak acid.

Process for preparing polysiloxane-polycarbonate block cocondensates using a salt of a weak acid

An improvement to the melt transesterification process for the preparation of polycarbonate is disclosed. The improvement entails adding to the process between its medium viscosity reactor and a high viscosity reactor at least one bridged ester of organic sulphur-containing acid.

Inhibition of catalytically active impurities in polycarbonate by the melt transesterification process

Growing community of inventors

Tönisvorst, Germany

Thomas Pfingst