Covestro Deutschland Ag

Bayer Materialscience Ag

Covestro Intellectual Property Gmbh & Co. Kg

Vincenzo Taravella

Alexander Meyer

Gianmaria Malvestiti

Rainer Hagen

Rafael Oser

Ulrich Grosser

Peter Capellen

Joerg Reichenauer

Thomas Pfingst

Ciro Piermatteo

Andrea Scagnelli

Armin Berger

Tobias Sadler

Andrea Crotti

Stefania Scotuzzi

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 LED lighting elements comprising translucent mouldings composed of polycarbonate-based moulding compounds, comprising a colourant mixture, carbon black, scattering additive and optionally white pigment, as used, for example, as covers with a day/night design. Through combination with one or more RGB-LEDs, it is possible to achieve surprising colour effects in night design with presence of a deep gloss effect in mouldings that are black and grey in day design.

LED lighting elements comprising molded parts made of translucent polycarbonate compositions having a deep gloss effect

Disclosed is a multi-layer body with high weathering resistance comprising (a) a substrate layer containing at least one thermoplastic polymer (b) one cover layer on at least one side of the substrate layer, characterized in that the substrate layer further contains: (a1) at 0.02 wt. % to 0.2 wt %, at least one colorant on the basis of anthraquinone of structure (1) or (2) with structure (1), R1 and R2 standing, independently of each other, for H, OH, OR5 NH2 and NHR5, R5 being selected from alkyl, cycloalkyl, phenyl and substituted and annulated phenyls, and R3 standing for H, alkyl, alkoxy, and R4 standing for H, OH and p-methylphenyl-NH&#x2014;; and with structure (2): (a2) at 0.01 wt % to 1.00 wt. %, one or a plurality of demolders, and the cover layer consisting of a coating on the basis of polysiloxane or on the basis of polyacrylate or on the basis of polyurethane acrylate, containing at least one UV-absorber and having a layer thickness of 2-15 [mu]m.

Multi-layer body made of polycarbonate with high weathering resistance

The present invention relates to a polymer composition including a transparent thermoplastic plastic, an inorganic infrared absorber, also referred to as IR absorber hereinbelow, optionally an inorganic nano-scale pigment, and the combination of at least one organic coloring agent of a specific structure, and to the preparation and use of the polymer compositions according to the invention and to products produced therefrom.

Polymer composition having heat-absorbing properties and high stability to weathering

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Bergamo, Italy

Vincenzo Taravella