Process of making a colloidal suspension of phosphates

Claim 1

THE PROCESS OF MAKING A COLLOIDAL SUSPENSION OF PHOSPHATES WHICH COMPRISES SUSPENDING A CRYSTALLINE HYDRATED PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF HYDRATED TRISODIUM ORTHOPHOSPHATE, HYDRATED TRIPOTASSIUM ORTHOPHOSPHATE, HYDRATED SODIUM PYROPHOSPHATE, HYDRATED POTASSIUM PYROPHOSPHATE, HYDRATED SODIUM TRIPOLYPHOSPHATE, HYDRATED POTASSIUM TRIPOLYPHOSPHATE, AND MIXTURES THEREOF, IN A VEHICLE HAVING AN AFFINITY FOR WATER AND SELECTED FROM THE GROUP CONSISTING OF (1) A GLYCOL OF 2 TO 4 CARBON ATOMS, (2) GLYCERIN, AND (3) 1-OCTANOL, AND MIXTURES THEREOF, EFFECTING SATURATION OF THE VEHICLE WITH RESPECT TO SAID HYDRATED PHOSPHATE BY AGITATING THE SUSPENSION, AND REMOVING WATER VAPOR FROM THE SUSPENSION WHILE MAINTAINING THE TEMPERATURE OF THE SUSPENSION WITHIN THE RANGE OF ABOUT 70*F. TO ABOUT 180*F., WHEREBY SUCCESSIVE PORTIONS OF SAID HYDRATED PHOSPHATE ARE DISSOLVED, RENDERED INSOLUBLE IN THE VEHICLE BY REMOVAL OF THE WATER OF CRYSTALLIZATION OF THE PHOSPHATE AND PRECIPITATED AS COLLOIDAL PARTICLES, WITHOUT SUBSTANTIAL DECOMPOSITION AND LOSS OF THE CHEMICAL IDENTITY OF THE BASIC PHOSPHATE.