Exothermic composition
Abstract
Abstract AN EXOTHERMIC COMPOSITION CAPABLE OF GENERATING HEAT ON THE ADDITION OF WATER AND HAVING PARTICULAR USE FOR CURING THE TERMOSETTING RESIN ADHESIVE JOINT IN PIPE SECTIONS. THE EXOTHERMIC COMPOSITION CONSISTS OF A STRONG BASE, AN ACID COMPONENT, FINELY DIVIDED INERT MATERIAL AND WATER. THE WATER IS PRE-MIXED WITH THE INERT MATERIAL, BEING ADSORBED ON THE PARTICLES OF THE INERT MATERIAL, AND WHEN THE COMPONENTS ARE BLENDED TOGETHER A MORE UNIFORM GENERATION OF HEAT IS PRODUCED WHICH PREVENTS LOCALIZED AREAS OF OVERHEATING. TO INCREASE THE GENERATION OF HEAT, FINELY DIVIDED METAL POWDER CAN BE INCORPORATED IN THE COMPOSITION AND THE METAL POWDER WILL REACT WITH THE BASE TO PROVIDE A SECOND STAGE OF HEAT GENERATION. TO PROVIDE A MORE UNIFORM APPLICATION OF HEAT TO THE ADHESIVE JOINT A MULTIPLICITY OF SMALL, HOLLOW, THERMOPLASTIC MICROSPHERES CAN BE INCORPORATED IN THE COMPOSITION.
Inventors
- 👤 R Jackman
- 👤 J Johnson
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |