Surface modified silicon dioxide particles

Details Surface modified silicon dioxide particles Surface modified silicon dioxide particles

C - Chemistry, Metallurgy

09

C

C09C 1/30 (2006.01) C08K 9/06 (2006.01)

Patent

CA 2720927

Surface-modified silicon dioxide particles or silica sol preparable by reacting aqueous silica sol with at least one first modifier comprising at least one alkoxysilane and with at least one second modifier selected from the group consisting of halosilane, siloxane, and mixtures thereof, with water being removed before the reaction with the first or second modifier.

L'invention porte sur des particules de dioxyde de silicium modifiées en surface, ou sol de silice, qui peuvent être fabriquées par réaction d'un sol de silice aqueux avec au moins un premier agent modifiant comportant au moins un alcoxysilane et au moins un deuxième agent modifiant choisi dans le groupe consistant en un halogénosilane, un siloxane et des mélanges de ceux-ci, l'eau étant éliminée avant la réaction avec le premier ou avec le deuxième agent modifiant.

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