The present invention relates to a multistep process for obtaining modified inorganic particles having a layered structure, characterized by the steps of a) Providing an aqueous solution or suspension comprising at least one first amino compound in a first vessel T1 and protonating the at least one first amino compound using at least one acid; b) Providing an aqueous homogenous suspension comprising at least one inorganic particle having a layered structure in a second vessel T2; c1) addition of the aqueous solution or suspension of the at least one first protonated amino compound from the first vessel T1 to the aqueous homogenous suspension comprising at least one inorganic particle having a layered structure in the second vessel T2; c2) Addition of at least one second non-protonated amino compound to the suspension obtained in step c1); d) Addition of at least one aldehyde to the homogenous suspension of the at least one inorganic particle being modified by the first protonated amino compound and second non-protonated amino compound in the second vessel T2; and e) removal and work up of the modified inorganic particles. The present invention relates also to modified inorganic particles obtained in this multistep process and their use.
本发明涉及一种获得具有分层结构的改性无机颗粒的多步骤工艺,其特征在于以下步骤 a) 在第一容器 T1 中提供包含至少一种第一
氨基化合物的
水溶液或悬浮液,并使用至少一种酸质子化至少一种第一
氨基化合物; b) 在第二容器 T2 中提供包含至少一种具有分层结构的无机颗粒的
水均质悬浮液;c1)将来自第一容器T1的至少一种第一质子化
氨基化合物的
水溶液或悬浮液加入到第二容器T2中的包含至少一种具有分层结构的无机颗粒的
水性均质悬浮液中; c2)将至少一种第二非质子化
氨基化合物加入到步骤c1)中得到的悬浮液中;d) 在第二容器 T2 中,向被第一质子化
氨基化合物和第二非质子化
氨基化合物修饰的 至少一种无机颗粒的均质悬浮液中加入至少一种醛;以及 e) 去除和加工修饰的无机颗粒。本发明还涉及在该多步骤工艺中获得的改性无机颗粒及其用途。