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1. 发明授权

US6004391A Pigments for the production of purple ceramic decoration, process for the production thereof and use thereof 失效
标题翻译：用于生产紫色陶瓷装饰的颜料，其生产方法及其用途
公开(公告)号：US6004391A
公开(公告)日：1999-12-21
申请号：US969366
申请日：1997-11-28
申请人： Hans-Peter Letschert , Jenny Wilfert
发明人： Hans-Peter Letschert , Jenny Wilfert
IPC分类号： C04B41/86 , C03C8/14 , C09C1/00 , C09C1/40 , C09C1/62
CPC分类号： C09C1/0009 , C01P2002/02 , C01P2006/60
摘要： Purple pigments according to the invention based on a stovable support material, in particular a glass frit, having a coat applied by coprecipitation of an oxide hydrate of one or more elements from the range comprising Al, Si, Sn, Pb, Ti, Nb, Ta, Sc, Y, La, Ce and Zn and a water-insoluble gold compound or colloidal gold are distinguished from prior art pigments of a similar composition by improved color stability in high temperature firing. The pigments are obtainable in the aqueous phase by coprecipitation of an oxide hydrate and a gold compound or colloidal gold in the presence of a support material and in the absence of a reducing agent. Pigments containing gold compounds assume a purple color on heat treatment or by chemical reduction. Preferred pigments containing gold compounds, which may directly be used as decorative colorants, conveniently develop their color during firing of the decoration.
摘要翻译：根据本发明的紫色颜料，其基于可焊的支撑材料，特别是玻璃料，其具有通过从包括Al，Si，Sn，Pb，Ti，Nb，Nb的多种元素的一种或多种元素的氧化物水合物共沉淀而施加的涂层， Ta，Sc，Y，La，Ce和Zn以及不溶于水的金化合物或胶态金与现有技术的颜色相似，通过改善高温烧制中的颜色稳定性。颜料可以通过在载体材料的存在下和在不存在还原剂的情况下共沉淀氧化物水合物和金化合物或胶态金而在水相中获得。含有金化合物的颜料在热处理或化学还原时呈现紫色。可以直接用作装饰性着色剂的含金化合物的优选颜料在装饰的烧制过程中方便地显现其颜色。

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