| 摘要 |
<p>Six-layered pearlescent or nacreous pigment comprises: (i) a platelet-form substrate; (ii) a metal oxide-containing layer; (iii) a layer containing the corresponding non-glowing oxide, hydroxide or oxide hydrate to the layer (ii) oxide; (iv) an Si- or Al-oxide, hydroxide and/or oxide hydrate layer; (v) a layer different from layer (iv); and (vi) a layer containing one or more organofunctional coupling reagents. Six-layered pearlescent or nacreous pigment comprises: (i) a platelet-form substrate; (ii) a metal oxide-containing layer with the layers (i) and (ii) forming a glowing base pigment; (iii) a layer containing the corresponding non-glowing oxide, hydroxide or oxide hydrate to the layer (ii) oxide; (iv) an Si- or Al-oxide, hydroxide and/or oxide hydrate layer; (v) a layer different from layer (iv) and containing an Si-, Al-, Zr- and/or Ce- oxide, hydroxide and/or oxide hydrate; and (vi) a layer containing one or more organofunctional coupling reagents. An Independent claim is also included for the preparation of the pigment.</p> |
