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US 7,402,293 B2Granted
Surface-modified, aerogel-type structured silica
AssigneeDegussa AG
InventorsJürgen Meyer, Horst Zeizinger, Manfred Ettlinger, Hans-Dieter Christian
Life of this patent
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Abstract
A surface-modified, aerogel-type, structured silica is produced by spraying an aerogel-type, structured silica with a silanizing agent, post-mixing and conditioning. It can be used as a flatting agent.
Claims7
An aerogel-type, structured silica, characterized in that it is surface-modified with silanes, silazanes or siloxanes and wherein the aerogel-type, structured silica has a BET surface of from 80 to 450 m2/g, a bulk density of from 10 to 60 g/l, a DBP number of from 200 to 400 g/l/100 g and a pH of from 6 to 8.
Dependencies are inferred from the claim text.