| abstract |
Surface-modified, pyrogenically produced aluminum oxide which has the following physico-chemical properties: n n ______________________________________ n n n Surface (m 2 /g) n 50 to 150 nStamping density (g/l) 50 to 90 nDrying loss (%) <5 nAnnealing loss (%) 5.0 to 15 nC content (%) 0.5 to 12 npH 4 to 8. n______________________________________ |