Patent · US Active

Dispersion of aluminium oxide

US7985792B2 · kind B2 · utility

0Cited by

7References

9Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Heinz Lach · Rodenbach, DE
Gerrit Schneider · Hanau, DE
Thomas Scharfe · Alzenau, DE

Key dates

Filing date	Jul 10, 2009
Grant date	Jul 26, 2011
Priority date	—
Expiry date	Jul 10, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31993
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

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/2 g, 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/2 g, 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 medium.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.