Terpolymer binder composition
Abstract
Abstract SILICEOUS FIBER BATTS AND THE METHOD OF FORMING THEM WHEREIN AN IMPROVED RESINOUS BINDER IS EMPLOYED, SAID BINDER BEING FORMED BY THE STEPS OF (1) CHARGING AN INITIAL MIX OF FORMALDEHYDE AND PHENOL INTO A REACTOR IN THE PRESENCE OF A CATALYST, (2) REACTING THE MIXTURE TO A STAGE WHEREIN SOME FREE FORMALDEHYDE REMAINS, (3) CHARGING THE REACTOR SEQUENTIALLY WITH DISCYANDIAMIDE, (4) REACTING THE DICYANDIAMIDE UNTIL A LESSER AMOUNT OF FREE FORMALDEHYDE REMAINS, (5) CHARGING UREA TO THE REACTOR, (6) REACTING THE UREA WITH THE REMAINING FREE FORMALDEHYDE IN THE PRESENCE OF THE CATALYST, (7) COOLING THE MIXTURE, (8) NEUTRALIZING THE MIXTURE WITH ACID, (9) AND ADDING SUBSEQUENTLY THERETO, OIL, SILANE, ADDITIONAL UNREACTED NITROGENOUS COMPOUNDS AND WATER.
Inventors
- 👤 Clayton A Smucker
- 👤 William H Rigby Jr
- 👤 Wade V Zellar
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |