METHOD OF PRODUCING SILICA SOLS WITH CONTROLLABLE BROAD SIZE DISTRIBUTION AND MINIMUM PARTICLE SIZE
COLLOIDAL SILICA HAVING A CONTROLLABLE BROAD PARTICLE SIZE DISTRIBUTION AND A CONTROLLABLE MINIMUM PARTICLE SIZE IS DISCLOSED AND CLAIMED. PARTICLES BELOW A PREDETERMINED SIZE ARE EXCLUDED FROM THE PRODUCT COLLOIDAL SILICA OF THE INVENTION.A METHOD FOR CONTINUOUSLY PRODUCING THE DESIRED COLLOIDAL CO...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | COLLOIDAL SILICA HAVING A CONTROLLABLE BROAD PARTICLE SIZE DISTRIBUTION AND A CONTROLLABLE MINIMUM PARTICLE SIZE IS DISCLOSED AND CLAIMED. PARTICLES BELOW A PREDETERMINED SIZE ARE EXCLUDED FROM THE PRODUCT COLLOIDAL SILICA OF THE INVENTION.A METHOD FOR CONTINUOUSLY PRODUCING THE DESIRED COLLOIDAL COMPOSITION IS DISCLOSED COMPRISING THE STEPS OF PROVIDING PREFORMED SILICA PARTICLES HAVING A SURFACE AREA WHICH CONTROLS THE PARTICLE SIZE OF THE COLLOIDAL SILICA PRODUCT, ADDING A FEED SILICA COMPRISING AN ALKALINE SOLUTION AND SILICATE AT A FEED RATE WHICH IS LESS THAN A NUCLEATION RATE. |
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