Nacreous pigments, their preparation and use
    4.
    发明授权
    Nacreous pigments, their preparation and use 失效
    珍珠色素,其制备和使用

    公开(公告)号:US4494993A

    公开(公告)日:1985-01-22

    申请号:US453045

    申请日:1982-12-27

    摘要: Nacreous pigments having improved transparency and tinctorial strength and based on mica flakes coated with metal oxides, have a metal oxide layer which is formed as a homogeneous mixed layer in which, in addition to titanium dioxide, there also is present silicon dioxide and aluminum oxide. These can be produced by coating mica in an aqueous suspension with a titanium dioxide hydrate layer and then washing, drying and calcining. Silicon dioxide and aluminum hydroxide are precipitated as a uniform layer together with the titanium dioxide hydrate. The new pigments can be used for pigmenting plastics, lacquers, paints and cosmetics, inter alia.

    摘要翻译: 具有改善的透明度和着色强度并且基于涂覆有金属氧化物的云母薄片的珍珠质颜料具有形成为均匀混合层的金属氧化物层,其中除了二氧化钛之外,还存在二氧化硅和氧化铝。 这些可以通过在具有二氧化钛水合物层的水性悬浮液中涂覆云母,然后洗涤,干燥和煅烧来制备。 二氧化硅和氢氧化铝与二氧化钛水合物一起沉淀为均匀的层。 新的颜料可用于着色塑料,漆,油漆和化妆品等。