C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 17/00 (2006.01) B01J 13/00 (2006.01) C10L 1/10 (2006.01) C10L 1/12 (2006.01) C10L 1/18 (2006.01) C10L 1/20 (2006.01) C10L 1/22 (2006.01) C10L 1/24 (2006.01) C10L 1/26 (2006.01)
Patent
CA 2360820
The invention concerns an organic sol characterised in that it comprises cerium oxide particles, an organic liquid phase and at least an amphiphilic compound selected among carboxylic acid polyoxyethylene alkyl ethers, polyethylene phosphate alkyl ethers, dialkyl sulphosuccinates and quaternary ammonium compounds. In a first embodiment, the method for preparing the sol is characterised in that it consists in mixing said amphiphilic compound and the organic liquid phase, then in dispersing the cerium oxide particles in the resulting mixture. In a second embodiment, the method consists in forming a mixture of cerium oxide and at least one said amphiphilic compound, then in dispersing said mixture in said organic liquid phase. The invention also concerns a solid compound comprising a mixture of cerium oxide and at least an amphiphilic compound selected among those mentioned above.
L'invention concerne un sol organique qui est caractérisé en ce qu'il comprend des particules d'oxyde de cérium; une phase liquide organique et au moins un composé amphiphile choisi parmi les alkyl éthers polyoxyéthylénés d'acides carboxyliques, les alkyl éthers phosphates polyoxyéthylénés, les dialkyl sulfosuccinates et les composés d'ammonium quaternaires. Le procédé de préparation du sol, selon une première variante, est caractérisé en ce qu'on mélange le composé amphiphile précité et la phase liquide organique, puis on disperse les particules d'oxyde de cérium dans le mélange obtenu. Selon une seconde variante, on forme un mélange d'oxyde de cérium et d'au moins un composé amphiphile précité puis on disperse dans la phase liquide organique ledit mélange. La présente invention concerne aussi un composé solide qui comprend un mélange d'oxyde de cérium et d'au moins un composé amphiphile choisi parmi ceux qui ont été mentionnés plus haut.
Rhodia Chimie
Robic
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