Dispersion of aluminium oxide

Details Dispersion of aluminium oxide Dispersion of aluminium oxide

C - Chemistry, Metallurgy

01

F

C01F 7/02 (2006.01) B41M 5/52 (2006.01) C03C 17/25 (2006.01) C09C 1/40 (2006.01) C09D 17/00 (2006.01)

Patent

CA 2464617

A dispersion containing a high-surface-area, pyrogenically-produced aluminium oxide with a surface area and BET of more than 115 m2/g and a Sears number of more than 8 ml/2g, is produced by mixing a high-surface-area, pyrogenically- produced aluminium oxide having a BET specific surface area of more than 115 m2/g and a Sears number of more than 8 ml/2g, with water, setting a pH value of 2 to 11 (preferably 3 to 8) and dispersing the mixture by the introduction of controlled shearing forces. It can be used for the production of Inkjet media, digital imaging products and other printing media.

La présente invention concerne une dispersion contenant un oxyde d'aluminium produit par réaction pyrogénique, à grande zone de surface avec une zone de surface et un BET supérieurs à 115 m?2¿/g et un nombre de Sears supérieur à 8 ml/2g, avec de l'eau, qui fixe une valeur de pH de 2 à 11 ( de préférence de 3 à 8) et qui disperse le mélange par l'introduction de forces de cisaillement commandées. On peut utiliser cette dispersion pour produire des supports de jet d'encre, des produits d'imagerie numérique et d'autres supports d'impression.

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