Thermal insulating composition based on fumed silica granulates, processes for its preparation and uses thereof
AssigneeEvonik Operations GmbH
InventorsMatthias GEISLER, Maria NARGIELLO, Bettina GERHARZ-KALTE, Björn LAZAR, Uwe NUMRICH, Ulrich BOES, Bob Tse-Weng LIN, Craig BIESIADA
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Abstract
The present invention relates to a thermal insulating composition, containing 5 to 60% by weight of a hydrophobized granular material comprising fumed silica and at least one IR-opacifier, and 40 to 95% by weight of an inorganic and/or an organic binder, whereby the hydrophobized granular material has a content of free hydroxyl groups of no greater than 0.12 mmol/g, as determined by the reaction with lithium aluminium hydride.
Claims21
1-15. (canceled)
A thermal insulating composition, containing 5 to 60% by weight of a hydrophobized granular material comprising fumed silica and at least one IR-opacifier, and 40 to 95% by weight of an inorganic and/or an organic binder, wherein the hydrophobized granular material has a content of free hydroxyl groups of no greater than 0.12 mmol/g, as determined by reaction with lithium aluminium hydride.
Dependencies are inferred from the claim text.