Composite sol, process for producing the same, and ink-jet...

C - Chemistry – Metallurgy – 01 – B

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C01B 33/149 (2006.01) B41M 5/00 (2006.01) B41M 5/52 (2006.01) C09C 1/30 (2006.01)

Patent

CA 2480411

A composite sol containing colloidal composite particles which have a particle diameter as measured by the dynamic light scattering method of 20 to 500 nm and comprise colloidal silica particles having a diameter as determined from the specific surface area of 3 to 100 nm and aluminum phosphate with which the colloidal silica particles are bonded to one another or are coated and bonded to one another; a coating composition for ink-receiving layer formation which comprises the composite sol; and an ink-jet recording medium having an ink- receiving layer comprising the composite sol.

La présente invention a trait à un sol composite contenant des particules composites colloïdales qui présentent un diamètre de particule mesuré selon le procédé de diffusion dynamique de lumière de 20 à 500 nm et comportant des particules colloïdales de silice présentant un diamètre tel que déterminé à partir de la surface spécifique de 3 à 100 nm et un phosphate d'aluminium par lequel sont liées les particules colloïdales de silice les unes aux autres ou sont enrobées et liées les unes aux autres. L'invention a trait également à une composition de revêtement pour la formation d'une couche de réception d'encre qui comporte le sol composite. L'invention a trait en outre à un support d'enregistrement à jet d'encre comprenant une couche de réception d'encre comportant le sol composite.

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