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Aqueous colloidal dispersion based on at least a metal compound and a complexing agent, preparation method and use
Aqueous colloidal dispersion based on at least a metal compound and a complexing agent, preparation method and use
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机译:至少基于金属化合物和络合剂的胶态水分散体,制备方法和用途
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摘要
The invention concerns an aqueous colloidal dispersion of the aqueous colloidal nanometric type wherein the mean colloidal particle diameter is not more than 6 nm, said dispersion comprising: (1) at least a metal M compound, said metal M being a majority metal in the dispersion, selected among the group consisting of aluminium, zirconium and metals or the periodic table whereof the atomic number is between 22 and 31; and (2) at least a complexing agent having a pKs(M) (cologarithm of the dissociation constant of the complex formed by the complexing agent and the cation of said metal M) more than 2. The invention also concerns the method for preparing said dispersion. The resulting dispersion can in particular be used for preparing anti-UV filters, in catalysis, or as reinforcement of polymeric or mineral matrices.
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机译:本发明涉及水性胶体纳米类型的水性胶体分散体,其中平均胶体粒径不大于6nm,所述分散体包含:(1)至少一种金属M化合物,所述金属M为分散体中的多数金属选自铝,锆和金属,或原子序数在22至31之间的周期表; (2)至少具有pK s Sub>(M)(由所述络合剂和所述金属M的阳离子形成的络合物的解离常数的对数的对数)的络合剂。本发明还涉及制备所述分散体的方法。所得的分散体可以特别地用于制备抗紫外线过滤剂,用于催化或用作聚合物或矿物基质的增强。
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