Invention Grant
US09051471B2 Weather-resistant pearlescent pigments, process for the production and use thereof 有权
耐候珠光颜料,其生产和使用的方法

Weather-resistant pearlescent pigments, process for the production and use thereof
Abstract:
The present invention relates to a weather-resistant pearlescent pigment which consists of a platelet-shaped substrate coated with one or more highly refractive metal oxides, the platelet-shaped substrate being selected from the group consisting of synthetic mica flakes, glass flakes, SiO2 flakes, Al2O3 flakes, synthetic boehmite flakes, BiOCl flakes and mixtures thereof, and a top layer, wherein the top layer consists of the following layers: a) a cerium-containing layer, selected from the group consisting of cerium oxide, cerium hydroxide, hydrated cerium oxide, and mixtures thereof, the cerium-containing layer being applied directly to the highly refractive metal oxide layer, and b) an organic-chemical compatibilizing layer, which comprises the reaction products of oligomeric silanes, wherein the oligomeric silanes have one or more amino groups, the organic-chemical compatibilizing layer being applied directly to the cerium-containing layer a).
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