Stable colloidal dispersions and method of preparing same

Claim 1

A METHOD FOR PREPARING STABLE COLLOIDAL DISPERSIONS WHICH COMPRISES: PRECIPITATING A HYDRATED METAL OXIDE IN GEL FORM; WASHING THE PRECIPITATE UNTIL THE WASHINGS ARE FREE OF THE IONS USED TO EFFECT PRECIPITATIONS; RAPIDLY ELIMINATING THE MAJOR PORTION OF THE WATER ASSOCIATED WITH THE WASHED PRECIPITATE AND HEATING SAID PRECIPITATE TO PRODUCE AN AMORPHOUS, NON-CRYSTALLINE AND INCOMPLETELY DRIED PRODUCT AND, AFTER COOLING SAID INCOMPLETELY DRIED PRODUCT TO ABOUT ROOM TEMPERATURE, COMMINUTING SAID PRODUCT IN THE PRESENCE OF FRESHLY ADDED PEPTIZING AGENT AND WATER, TO PARTICLES FINER THAN ABOUT 0.1 MICRON, TO PEPTIZE THE PRODUCT AND TO PRODUCE A PEPTIZED CERAMIC SLIP; AND PASSING THE CERAMIC SLIP THROUGH A COLLOID MILL TO REDUCE THE SIZE OF THE SOLID PARTICLES IN SAID SLIP TO BELOW ABOUT 30 MILLIMICRONS, THEREBY PRODUCING A COLLOIDAL MATERIL WHICH FORMS A STABLE COLLOIDAL DISPERSION.

Claim 2

A METHOD FOR PREPARING STABLE COLLOIDAL DISPERSIONS WHICH COMPRISES: PRECIPITATING A HYDRATED METAL OXIDE IN GEL FORM; WASHING THE PRECIPITATE UNTIL THE WASHINGS ARE FREE OF THE IONS USED TO EFFECT PRECIPITATIONS; RAPIDLY ELIMINATING THE MAJOR PORTION OF THE WATER ASSOCIATED WITH THE WASHED PRECIPITATE AND HEATING SAID PRECIPITATE TO PRODUCE AN AMORPHOUS, NON-CRYSTALLINE AND INCOMPLETELY DRIED PRODUCT AND, AFTER COOLING SAID INCOMPLETELY DRIED PRODUCT TO ABOUT ROOM TEMPERATURE, COMMINUTING SAID PRODUCT IN THE PRESENCE OF FRESHLY ADDED PEPTIZING AGENT AND WATER, TO PARTICLES FINER THAN ABOUT 0.1 MICRON, TO PEPTIZE THE PRODUCT AND TO PRODUCE A PEPTIZED CERAMIC SLIP; AND PASSING THE CERAMIC SLIP THROUGH A COLLOID MILL TO REDUCE THE SIZE OF THE SOLID PARTICLES IN SAID SLIP TO BELOW ABOUT 30 MILLIMICRONS, THEREBY PRODUCING A COLLOIDAL MATERIL WHICH FORMS A STABLE COLLOIDAL DISPERSION.