Granular mixed oxide material and thermal insulating composition on its basis
AssigneeEvonik Operations GmbH
InventorsUwe Numrich, Christian Moers, Bettina Gerharz-Kalte, Björn Lazar, Matthias Geisler
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Abstract
Hydrophobized granular material comprising from 30 to 95% by weight of a pyrogenic mixed oxide based on silica and at least one oxide of metal M selected from of Al, Ti and Fe with the content of metal M oxide in the mixed oxide being from 01 to 10% by weight, and from 5 to 70% by weight of at least one IR-opacifier selected from the group consisting of silicon carbide, zirconium dioxide, ilmenites, iron titanates, zirconium silicates, manganese oxides, graphites, carbon blacks and mixtures thereof.
Claims20
A hydrophobized granular material comprising from 30 to 95% by weight of a mixed oxide based on silica and at least one oxide of metal M selected from the group consisting of:
- Al;
- Ti;
- and Fe;
- wherein the mixed oxide comprises from 0.1 to 10% by weight of the metal M oxide, and from 5 to 70% by weight of at least one IR-opacifier selected from the group consisting of:
- silicon carbide;
- zirconium dioxide;
- ilmenites;
- iron titanates;
- zirconium silicates;
- manganese oxides;
- graphites;
- carbon blacks;
- and mixtures thereof.
Dependencies are inferred from the claim text.