Metal-phospho-silica composition and method of manufacture
Abstract
Abstract A METAL-PHOSPHO-SILICA COMPOSITION USEFUL AS A COMPONENT OF PAINTS, LACQUERS, ADHESIVES, SEALING, AGENTS, CAULKING AGENTS AND THE LIKE, TO IMPART ANTI-CORROSION, IMPERMEABILITY AND INTUMESCENCE TO SUCH COMPOSITIONS, IN WHICH A DIVALENT OR TRIVALENT METAL, METAL OXIDE OR METAL SALT IS REACTED WITH ORTOPHOSPHORIC ACID IN A RATIO SUFFICIENT TO FORM A METAL HYDROGEN PHOSPHATE SOLUTION CONTAINING METAL DIHYDRGOEN PHOSPHATE IN A MAJOR PROPORTION AND FREE ORTHOPHOSPHORIC ACID IN A MINOR PROPORTION; AND THEREAFTER, REACTING A MAJOR PROPORTION OF THE METAL HYDROGEN PHOSPHATE SOLUTION WITH A MINOR PROPORTION OF AN ALKALI METAL SILICATE IN A RATIO SUFFICIENT TO FORM A SOFT, NON-CYRSTALLINE METAL-PHOSPHO-SILICA COMPOSITION. THE METAL-PHOSPHO-SILICA COMPOSITION IS SUBSTANTIALLY INSOLUBLE IN WATER AND IN MOST ORGANIC SOLVENTS, BUT IT IS READILY DISPERSED THEREIN; AND MAY BE DISPERSED IN SUCH MATERIALS BY THE ADDITION OF A SUITABLE SURFACE ACTIVE AGENT. THE METAL-PHOSPHO-SILICA COMPOSITION MAY ALSO BE PRODUCED IN POWDERED FORM BY UTILIZING ANY ONE OF SEVERAL TECHNIQUES FOR REMOVING WATER FROM THE REACTION PRODUCT.
Inventors
- 👤 Claudius Nielsen
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |