Radar-Compatible Plastic Part
AssigneeMerck Patent GmbH
InventorsUdo Gumsheimer, Kevin Kaiser
Life of this patent
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Abstract
A radar-compatible plastic part that has a surface provided with a colouring coating that is free from metal-effect pigments; a process for the production of a radar-compatible plastic part of this type; and the use thereof in vehicle construction. The radar-compatible, coated plastic part is suitable for use for cover parts of radar devices, omits conventional metal-effect pigments in its colouring coating, and has a silver-coloured metallic appearance, high hiding power, and a strong lightness flop, and at the same time, a good radar wave transparency.
Claims28
A radar-compatible, coated plastic part, wherein the plastic part has an optionally precoated and/or pretreated surface that is provided with a colouring coating that is free from metal-effect pigments and comprises flake-form effect pigments having absorbent properties, wherein the colouring coating comprises a plurality of layers arranged one above the other, wherein the flake-form effect pigments having absorbent properties are present in each layer and at least two of the layers have geometrical layer thicknesses that are different from one another, and wherein the surface of the plastic part does not have any further colouring or metallic coating.
A process for the production of a radar-compatible plastic part, wherein a colouring coating that is free from metal-effect pigments and comprises flake-form effect pigments having absorbent properties is applied to an optionally precoated and/or pretreated surface of a plastic part, wherein the colouring coating is applied in a plurality of layers arranged one above the other, where the flake-form effect pigments having absorbent properties are present in each layer and at least two of the layers have geometrical layer thicknesses that are different from one another, where drying is carried out after application of each layer, and where the surface of the plastic part is not provided with any further colouring or metallic coating.
(canceled)
Dependencies are inferred from the claim text.