FIELD: chemistry.
SUBSTANCE: invention relates to a stable mixture containing surface-modified particles, a solvent and a surfactant, to the use of said particles in systems where particles are brought into contact with at least one solvent, wherein the ratio of the mass of the solvent to the mass of the modified particles is greater than 500, as well as to the use of said particles in agglomeration-deagglomeration cycles. The surface-modified particles are obtained by reacting metal oxide particles with at least one compound selected from silicon-containing compounds which contain one, two or three alkoxy radicals. The metal oxides are selected from a group which includes Mn, Fe, Co, Ni and Cu oxides, combinations thereof and mixed oxides of said metals with at least one alkali-earth metal.
EFFECT: obtaining surface-hydrophobic particles, characterised by high stability with respect to a large amount of solvent or surfactants.
15 cl, 13 ex
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Authors
Dates
2015-12-20—Published
2011-09-02—Filed