Organic inorganic composite powder, method of producing the...

C - Chemistry – Metallurgy – 09 – C

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C09C 3/08 (2006.01) A61K 8/19 (2006.01) A61K 8/36 (2006.01) A61K 8/81 (2006.01) A61Q 3/02 (2006.01) A61Q 19/00 (2006.01) C08K 5/09 (2006.01) C08K 9/04 (2006.01) C08L 33/00 (2006.01) C09C 1/00 (2006.01) C09D 7/12 (2006.01) C09D 11/00 (2006.01) C09D 201/00 (2006.01)

Patent

CA 2629646

An organic inorganic composite powder that has a specified particulate form corresponding to washing solvent and that contains fine inorganic particles, having high dispersibility in water. The organic inorganic composite powder is obtained through a process comprising dissolving a metal salt in a reaction solvent; carrying out neutralization or reduction in the presence of a monomer or polymer dissolved in the reaction solvent so as to attain precipitation from the reaction solvent, provided that when the monomer does not combine with the metal salt at the precipitation in the presence of a monomer, the monomer is polymerized after the precipitation of the metal salt; washing the obtained precipitate with a specified washing solvent; and drying the washed precipitate.

Poudre composite organique/inorganique ayant une forme particulaire spécifiée qui correspond à un solvant de lavage et contenant de fines particules inorganiques hautement dispersibles dans l'eau. La poudre composite organique/inorganique est obtenue par un procédé qui comprend les étapes consistant à dissoudre un sel métallique dans un solvant réactionnel ; neutraliser ou réduire la présence d'un monomère ou d'un polymère dissous dans le solvant réactionnel de façon à obtenir la précipitation dans le solvant réactionnel, à la condition que, lorsque le monomère ne se combine pas avec le sel métallique lors de la précipitation en présence d'un monomère, le monomère est polymérisé après la précipitation du sel métallique ; laver le précipité obtenu avec un solvant de lavage spécifié ; et sécher le précipité lavé.

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