Patent ID: 7125532

Claim:
A process for the production of an aqueous/aqueous-acidic dispersion of an alumino-silicate comprising: hydrolyzing jointly or separately from each other in space or time at least one hydrolyzable aluminum compound and at least one hydrolyzable organosilicon compound, at a temperature of from 50 to 98° C., wherein the alumninum compound/silicon compound ratio is from 99.5 wt. %:0.5 wt. % to 50 wt. %:50 wt. %, each referring to Al 2 O 3 :SiO 2 :; during or after the hydrolysis subjecting the hydrolysis reaction products to hydrothermal aging in an aqueous/aqueous-acidic media at a temperature of from 80 to 220° C. for a period of time greater than 0.5 hour; recovering a dry powder of the aged alumino-silicate; and dispersing the alumino-silicate powder in an aqueous/aqueous-acidic media is an amount of greater than 90% wt. without the addition of or treatment with any organic solvent.