| abstract |
The present invention relates to weather-resistant pearlescent pigments, comprising the group consisting of synthetic mica platelets, glass platelets, SiO 2 platelets, Al 2 O 3 platelets, synthetic boehmite platelets, BiOCl platelets, and mixtures thereof. More selected, coated or uncoated platelet-shaped substrate, A color-forming coating using at least one high refractive index metal oxide, and a top layer; Including Where the top layer has the following layer order: a) a first layer composed of tin oxide and / or tin hydroxide and / or hydrated tin oxide; b) a second cerium-containing layer comprising cerium oxide and / or cerium hydroxide and / or hydrated cerium oxide; c) an organic material coating comprising or consisting of an oligomeric silane applied to the cerium-containing layer, wherein the oligomeric silane has one or more amino groups, and the oligomeric silane is cerium-containing Chemically bonded to the layer), Is included. The invention further relates to a process and the use for producing this pearlescent pigment. |