DISPERSION OF ALUMINIUM OXIDE, COATING COMPOSITION AND INK-ABSORBING MEDIUM

摘要

Dispersion of aluminium oxide, characterised in that it contains 20 to 60 wt.-% of pyrogenically-produced aluminium oxide powder in form of aggregates of primary particles, wherein the powder has - a BET specific surface area of from 50 to 150 m<SUP>2</SUP>/g - a ratio Sears number/BET surface area which is from about 0.150 to 0.160, wherein the mean aggregate diameter in the dispersion is less than 200 nm.