13-02-2020 дата публикации
Номер: US20200048470A1
A multilayered interference pigment containing, in succession: 1. A multilayered interference pigment comprising in succession:a metal core in the form of a flake, the metal core comprising a material selected from the group consisting of gold, silver, palladium, rhodium, ruthenium, platinum, osmium, iridium and an alloy thereof;a first layer of transparent dielectric material; anda second discontinuous metal layer making it possible to both reflect a portion of the light beam and to transmit another portion of this beam onto the metal core.2. The pigment according to claim 1 , wherein the metal core comprises a material selected from the group consisting of gold claim 1 , silver claim 1 , rhodium and an alloy of thereof.3. The pigment according to claim 1 , comprising a third protective layer comprising a transparent dielectric material or a transparent resin.4. The pigment according to claim 1 , wherein the dielectric material of the first layer and of the third layer is selected from the group consisting of TiO claim 1 , SiO claim 1 , AlO claim 1 , MgF claim 1 , TaO claim 1 , SiNZnS claim 1 , ZnO claim 1 , ZrO claim 1 , CrO claim 1 , CeO claim 1 , YO claim 1 , HfN claim 1 , HfC claim 1 , HfO claim 1 , LaO claim 1 , MgO claim 1 , SbO claim 1 , SiO claim 1 , SeO claim 1 , SnOand WO.5. The pigment according to claim 1 , wherein the second metal layer comprises a material selected from the group consisting of silver claim 1 , gold claim 1 , aluminium claim 1 , titanium claim 1 , palladium claim 1 , platinum claim 1 , ruthenium claim 1 , rhodium claim 1 , osmium claim 1 , iridium claim 1 , tin claim 1 , chromium claim 1 , iron claim 1 , cobalt claim 1 , nickel claim 1 , copper claim 1 , zinc claim 1 , rhodium and an alloy thereof.6. The pigment according to claim 1 , wherein the metal core has an average transverse diameter between 2 and 300 μm claim 1 , and an average thickness between 20 and 1000 nm.7. The pigment according to claim 1 , wherein the first layer has a ...
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