Modified clay
Abstract
Abstract A PROCESS HAS BEEN PROVIDED FOR MODIFYING SILICEOUS SUBSTANCES CONTAINING ALUMINUM OXIDE FROM WHICH BOUND WATER HAS BEEN DRIVEN OFF, SUCH AS BY HEATING AT ELEVATED TEMPERATURE OR BY AZEOTROPIC DISTILLATION WITH CERTAIN SOLVENTS. THE PRODUCT THUS PREPARED IN REACTED WITH AN ALKYLENE DIVINYL ETHER CAPABLE OF POLYMERIZATION AT A SITE OF THE SILICEOUS SUBSTANCE FROM WHICH WATER HAS BEEN REMOVED. AS A SURPRISING ADVANTAGE, A DIVINYL ETHER DOES POLYMERIZE SUBSTANTIALLY, ONLY ON THE SURFACE OF THE SILICEOUS MATERIALS RATHER THAN PROPAGATE INTO THE SOLVENT AND FORM HOMOPOLYMERS. PRODUCTS PREPARED BY THIS PROCESS ARE WITHIN THE SCOPE OF THE INVENTION AS ARE THE USES OF THESE PRODUCTS FOR PURPOSES AS ADJUVANTS IN POLY(ESTER) AND OLEAGINOUS COMPOSITION FORMULATIONS.
Inventors
- 👤 Stanley E Gebura
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |