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    • 73. 发明授权
    • Colloidal dispersion and redispersible composition in the form of a
cerium oxide based colloidal dispersion
    • 以氧化铈为基础的胶态分散体形式的胶体分散体和可再分散组合物
    • US6033677A
    • 2000-03-07
    • US983001
    • 1998-04-13
    • Bernard CabaneMinou Nabavi
    • Bernard CabaneMinou Nabavi
    • A61K8/30A61K8/06A61K8/34A61K8/36B01J13/00B01J23/10C01F17/00C09D1/00C09D5/08C10M103/06C10N30/12A61K7/00
    • C01F17/0043B01J13/00C01P2006/22
    • The invention relates to a colloidal dispersion, characterized in that it comprises a cerium oxide and at least one additive chosen from .beta.-diketones, monocarboxylic acids containing a hydroxyl function in the .alpha.- or .beta.-position and diols. It also relates to a redispersible composition in the form of a colloidal dispersion based on cerium oxide and the same above mentioned additives. The colloidal dispersion of the invention can be obtained by a process which is characterized in that at least one above mentioned additive is added to a colloidal dispersion of cerium oxide as the starting material. Finally, the invention relates to the use of a dispersion of the above type or of the type obtained by redispersing a redispersible composition, on a substrate as an anticorrosion agent, in a cosmetics composition, in catalysis, in particular for automobile post-combustion, in lubrication or in ceramics.
    • PCT No.PCT / FR96 / 00983 Sec。 371日期:1998年4月13日 102(e)1998年4月13日PCT PCT 1996年6月24日PCT公布。 出版物WO97 / 0221200 日期1997年1月23日本发明涉及胶体分散体,其特征在于其包含氧化铈和至少一种选自β-二酮,α或β-位中含有羟基官能团的单羧酸和二醇的添加剂。 它还涉及基于氧化铈和相同的上述添加剂的胶体分散体形式的可再分散组合物。 本发明的胶体分散体可以通过一种方法获得,其特征在于将至少一种上述添加剂加入到氧化铈的胶体分散体中作为起始原料。 最后,本发明涉及上述类型的分散体或通过将可再分散组合物在底物作为防腐剂,在化妆品组合物中,特别是汽车后燃烧中的再分散获得的分散体的用途, 在润滑或陶瓷。