Epoxy resin cement
Abstract
Abstract A THERMOSETTING EPOXY COMPOUND IS PROVIDED COMPRISING A FIRST MIX OF GLYCIDYL ETHER OF POLHYDRIC PHENOLS AND A CYCLOALIPHATIC POLYEPOXY RESIN IN THE RATIO OF ABOUT 1:4 TO 3:2 AND A SUITABLE THIXOTROPIC AGENT. A SUITABLE FILLER TO IMPROVE THE PHYSICAL PROPERTIES OF THE COMPOUND MAY BE INCORPORATED INTO THE FIRST MIX. TO THIS IS ADMIXED A SECOND MIX COMPRISING A CURING AGENT OF A BORON TRIFLUORIDE AMINE COMPLEX DISSOLVED IN A POLYFUNCTIONAL HYDROXYLIC SOLVENT IN SUFFICIENT QUANITY SO THAT THE GELATION TIME IS SUBSTANTIALLY INDEPENDENT OF THE QUANTITY OF CURING AGENT. THE RESULTING ADMIXED COMPOUND IS THIXOTROPIC AND EXHIBITS A RELATIVELY RAPID GELATION TIME WHICH OCCURS AT ROOM TEMPERATURE.
Inventors
- 👤 Mason H Earing
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |