Microporous powder composition and insulation product

Abstract

The microporous powder composition comprises an insulation powder chosen from alumina and silica, and an opacifier and a filler, wherein the filler is a hollow microsphere of inorganic material. The hollow microspheres may have a median particle size in the range of up to 100 μm, preferably 40-80 μm. The microporous powder composition may be fiber-free and is configured for use in granulates. The granules may be coated, wherein the microspheres provide good adhesion from the coating material to the microporous granules.

Dependencies are inferred from the claim text.