Preparation of a gelatin-vitamin mixture

Claim 1

THE PROCESS WHICH COMPRISES TREATING A MIXTURE OF PARTICULATE GELATIN 0.01 TO 1.0 MM. IN SIZE CONTAINING FAT-SOLUBLE VITAMIN MATERIAL AND AN OIL IN WHICH THE PARTICULATE GELATIN IS SUBSTANTIALLY INSOLUBLE IN AN ENCLOSED FILTER ZONE ON A RIGID, POROUS FILTER PLATE WITH AN ORGANIC SOLVENT IN WHICH SAID PARTICULATE GELATIN IS SUBSTANTIALLY INSOLUBLE AND IN WHICH SAID OIL HAS SUBSTANTIAL SOLUBILITY AND DISSOLVING SUBSTANTIALLY ALL OF SAID IN SAID SOLVENT, SEPARATING SUBSTANTIALLY ALL OF THE RESULTING OIL-CONTAINING SOLVENT FROM THE PARTICULATE GELATIN BY FILTRATION THROUGH SAID FILTER PLATE, THE PARTICULATE GELATIN BEING MAINTAINED IN INTIMATE CONTACT WITH SAID SOLVENT BY AGITATION DURING THE SAID SOLVENT TREATING, INTRODUCING A STREAM OF INERT GAS AT A DRYING TEMPERATURE THROUGH THE SAID SOLVENTTREATED PARTICULATE GELATIN ON SAID FILTER PLATE COUNTER IN DIRECTION TO THE FLOW OF THE SAID OIL-CONTAINING SOLVENT FILTRATE THROUGH SAID FILTER PLATE WHILE THE SAID SOLVENTTREATED PARTICULATE GELATIN IS BEING AGITATED IN SAID FILTER ZONE UNTIL THE SAID SOLVENT-TREATED PARTICULATE GELATIN IS SUBSTANTIALLY NON-TACKY AND FREE-FLOWING.