Process for the manufacture of a colloid of iron oxide

Details Process for the manufacture of a colloid of iron oxide Process for the manufacture of a colloid of iron oxide

C - Chemistry, Metallurgy

09

C

C09C 1/24 (2006.01) C01G 49/02 (2006.01) C01G 49/08 (2006.01)

Patent

CA 2678085

The invention concerns a two-stage process for the manufacture of a colloid of iron oxide, and results in the dispersion of the desired iron oxide particles within a carrier fluid by a mixture of mono- and polycarboxylic acids providing excellent properties to the colloid. The process also has the advantage of preserving the physical form of the iron oxide particles, allowing any desired properties of the iron oxide core (such as crystal form or magnetism) to be maintained within the colloid.

L'invention concerne un procédé à deux étapes permettant la fabrication d'un colloïde d'oxyde de fer et conduit à la dispersion des particules d'oxydes de fer souhaitées dans un fluide de transport par un mélange d'acides mono- et polycarboxyliques fournissant d'excellentes propriétés au colloïde. Le procédé présente également l'avantage de garder la forme des particules d'oxyde de fer, ce qui permet de conserver toute propriété physique souhaitée du noyau d'oxyde de fer (telles que la forme cristalline ou le magnétisme) à l'intérieur du colloïde.

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