Process for preparing microporous bodies with thermal insulating properties.

摘要

The invention relates to a process for preparing a microporous body having thermal insulating properties, by a) mixing I) 0.5-60% by weight of one or more compound(s) selected from the group consisting of the oxides, hydroxides and carbonates of the metals of the 2nd main group; II) 5-95% by weight of pyrogenic SiO2 containing 0-20% by weight of Al2O3 (based on the SiO2 used); III) 0-60% by weight of an opacifier having at least one absorption maximum in the wavelength range of 1.5-10 mu m; IV) 0.1-10% by weight of an organic fibre; b) Pressing the mixture prepared to form a shaped body; c) Heating the shaped body produced to a temperature above 700@C.