Patent ID: 8133315

Claim:
A process for producing a hydrolysis-stable molded article, wherein the process comprises mixing a pre-formed consolidant with at least one of a porous material and a particulate material and curing the consolidant, wherein the consolidant is particle-free and comprises at least one of a hydrolyzate and a precondensate of (a) at least one organosilane of formula R n SiX 4-n (I) wherein the radicals R are the same or different and represent groups which are not removable by hydrolysis, the radicals X are the same or different and represent hydroxy groups and groups which are removable by hydrolysis, and n is 1, 2 or 3; (b) at least one hydrolysable silane of formula SiX 4 (II) wherein the radicals X are as defined above; and (c) at least one metal compound of formula MX a (III) wherein M represents a metal of main groups I to VIII or of transition groups II to VIII of the Periodic System of Elements, including boron, X is as defined above in formula (I), with the proviso that two radicals X may be replaced by one oxo group, and a corresponds to a valency of the metal M; and wherein a molar ratio of compounds of formulae (I) and (II) to compound(s) of formula (III) is from 10,000:1 to 10:1.