Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Ciro Piermatteo

Georgios Tziovaras

Armin Berger

Heinz Pudleiner

Rainer Hagen

Kira Planken

Stefan Janke

Vincenzo Taravella

Gianmaria Malvestiti

Torsten Thust

Jan Helmig

Thorsten Schulz

Marius Rogowski

A lighting unit which includes a multilayer body and at least a first light emitting diode (LED) light source. The multilayer body includes, in sequence, a carrier layer of a black or gray translucent thermoplastic composition, a stone layer with an average thickness of 2 mm of less, and a transparent thermoplastic layer with an average thickness of 1 mm to 6 mm. The LED light source is disposed facing at least one lateral edge of the transparent thermoplastic layer, such that light from the LED light source is guided within the transparent thermoplastic layer.

LED lighting unit with multi-layer bodies having a carrier layer, a stone layer, and an edgelit transparent layer

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

The present invention relates to an improved method for the partial colouring, in particular for the coloured laser engraving, of plastic parts, in particular thermoplastic plastic parts, more particularly thermoplastic plastic parts, comprising a layer structure, and to the resulting partially coloured, preferably coloured and laser engraved, plastic parts, in particular thermoplastic plastic parts.

Method for the partial colouring of plastic parts

The present invention concerns a method for the partial dyeing, in particular for the colour laser engraving, of plastic components, in particular thermoplastic plastic components, more particularly thermoplastic plastic components, comprising a layer construction as well as the resulting partially dyed, preferably colour laser engraved plastic components, in particular thermoplastic plastic components.

Method for the partial coloring of plastic parts

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Leverkusen, Germany

Ciro Piermatteo