Process for making satin white
Abstract
Abstract A PROCESS OF PREPARING A SATIN WHITE PIGMENT BY REACTING AN ALUM SOLUTION WITH A HIGH PURITY HYDRATED LIME SLURRY. THE ALUM SOLUTION IS ADDED TO THE LIME SLURRY WHILE RAPIDLY AGITATING THE REACTION MIXTURE. THE TOTAL AMOUNT OF WATER PRESENT IN THE REACTION MIXTURE IS REGULATED TO CONTROL BOTH THE INTITIAL AMOUNT OF LIME WHICH IS SOLUBILIZED AND THE AMOUNT OF SATIN WHITE SOLIDS PRESENT IN THE REACTION MIXTURE UPON COMPLETION OF THE REACTION. THE TEMPERATURE IS REGULATED THROUGHTOUT THE REACTION, THE ALUM IS ADDED AT A CONTROLLED RATE, AND THE REACTION IS TERMINATED WHEN THE PH OF THE REACTION MIXTURE IS BETWEEN ABOUT 12.3 AND 9.5. STARCH MAY BE ADDED UPON COMPLETION OF THE REACTION AND THE RESULTANT MIXTURE MAY BE DEWATERED TO A RELATIVELY HIGH SOLIDS CONTENT. THE RESULTANT MASS, UPON APPLICATION OF SHEAR, BREAKS DOWN TO A FREE FLOWING, PUMPABLE LIQUID.
Inventors
- 👤 Morrison N Stiles
- 👤 George M Simpson
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |