Process for making silanized colloidal silica

Details Process for making silanized colloidal silica Process for making silanized colloidal silica

C - Chemistry, Metallurgy

01

B

C01B 33/149 (2006.01) C09C 1/30 (2006.01)

Patent

CA 2317488

A method of preparing an aqueous suspension of organosilanized colloidal silica particles is disclosed. Such particles are used in a variety of applications including density gradient separation media, anti- abrasion coatings and toner materials. The disclosed process is environmentally safe and produces a product that is aqueous and non-toxic to most biological cells.

L'invention concerne un procédé de fabrication d'une suspension aqueuse de particules de silice colloïdale organosilanisée. Ces particules sont utilisées dans plusieurs applications, notamment dans des milieux de séparation à gradient de densité, des revêtements anti-abrasion et des matériaux du type toner. Le procédé de l'invention, sans danger pour l'environnement, permet d'obtenir un produit aqueux et non toxique vis-à-vis de la plupart des cellules biologiques.

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