公开(公告)号：US4482389A

公开(公告)日：1984-11-13

申请号：US534869

申请日：1983-09-22

申请人： Klaus-Dieter Franz ,  Klaus Ambrosius ,  Reiner Esselborn ,  Manfred Kieser

发明人： Klaus-Dieter Franz ,  Klaus Ambrosius ,  Reiner Esselborn ,  Manfred Kieser

IPC分类号： C09C1/00 ,  C09C1/40 ,  C09C1/28

CPC分类号： C09C1/0021 ,  C09C1/0015 ,  C01P2004/84 ,  C09C2200/102 ,  C09C2200/301 ,  C09C2200/401 ,  C09C2220/106

摘要： Nacreous pigments which have improved stability to weathering and are based on mica flakes coated with metal oxides, are provided with a stabilizing, chromium-containing second coating which comprises a combination of metal salts. To form the second layer, iron and/or manganese are deposited on the starting pigments in the form of the hydroxide, carbonate or phosphate and chromium is deposited on the starting pigments in the form of the hydroxide, carbonate or phosphate or as methacrylato-chromium chloride. These are prepared by adding iron and/or manganese and chromium, in the form of salt solutions and at a pH of 2 to 8, to an aqueous suspension of a mica flake pigment coated with metal oxides, precipitating them on the mica flake pigments, and separating off these pigments and drying them.

摘要翻译： 具有改善的风化稳定性并且基于涂覆有金属氧化物的云母薄片的珍珠质颜料提供有稳定的含铬的第二涂层，其包含金属盐的组合。 为了形成第二层，铁和/或锰以氢氧化物，碳酸盐或磷酸盐的形式沉积在起始颜料上，铬以氢氧化物，碳酸盐或磷酸盐的形式沉积在起始颜料上，或作为甲基丙烯酸铬 氯化物。 这些是通过将盐和/或锰和铬的形式加入到金属氧化物涂覆的云母鳞片颜料的水性悬浮液中，将其沉淀在云母片状颜料上， 并分离出这些颜料并将其干燥。