Stabilized silica and methods of making and using the same

Details Stabilized silica and methods of making and using the same Stabilized silica and methods of making and using the same

C - Chemistry, Metallurgy

08

K

C08K 3/36 (2006.01) B60C 1/00 (2006.01) C01B 33/145 (2006.01) C01B 33/148 (2006.01) C08K 3/00 (2006.01) C08K 7/18 (2006.01) C08K 9/04 (2006.01) C08K 9/06 (2006.01) C09C 1/30 (2006.01) C09D 7/12 (2006.01) C09G 1/02 (2006.01) G03G 9/097 (2006.01)

Patent

CA 2396953

A surface stabilized, non-agglomerated silica is provided. The silica is prepared by the method of providing non-agglomerated silica, and then treating the surface of the silica, thereby substantially preventing agglomeration of silica. The surface of the silica may be treated with a hydrophobating agent, such as a silane, or an alcohol. Different embodiments of the invention illustrate that the hydrophobating agent or alcohol can be added at different points within the process of forming the surface stabilized, non-agglomerated silica. The surface stabilized, non-agglomerated silica has a size in the nanometer range. The surface stabilized, non-agglomerated silica can be used as an additive in any application that uses silica, such as reinforcing fillers for elastomeric compositions, foods, drugs, dentifrices, inks, toners, coatings and abrasives.

L'invention concerne de la silice non agglomérée à surface stabilisée, préparée par une méthode qui consiste à mettre en oeuvre de la silice non agglomérée, puis à traiter la surface de la silice pour empêcher sensiblement l'agglomération de la silice. La surface de la silice peut être traitée avec un agent hydrophobe, tel qu'un silane ou un alcool. Différentes formes de réalisation de l'invention démontrent que l'agent hydrophobe ou l'alcool peut être ajouté à différents moments du processus de formation de la silice non agglomérée à surface stabilisée. La silice non agglomérée à surface stabilisée présente une taille de l'ordre du nanomètre. Elle peut être utilisée comme produit d'addition dans n'importe quelle application utilisant la silice en tant que charges renforçantes entrant dans des compositions élastomériques, telles que aliments, médicaments, dentifrices, encres, toners, revêtements ou agents abrasifs.

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