1 2-polybutadiene molding composition
Abstract
Abstract 1,2-BUTADIENE POLYMER HAVING AT LEAST 80% OF THE BUTADIENE CONTENT COMBINED THEREIN IN THE 1,2 FORM IS USED TOGETHER WITH A PEROXY CURING AGENT TO PRODUCED A MOLDING COMPOSITION. THE POLYBUTDIENE CAN BE IN A NORMALLY GRANULAR, CRYSTALLINE FORM OR IN NON-CRYSTALLINE FORM. THE COMPOSITION CURES AT GOOD RATE EVEN WHEN ANTIOXIDANT TO INHIBIT PREMATURE CURING IS INCLUDED IN THE COMPOSITION. A HEAT DISTORTION TEMPERATURE OF AT LEAST 250*C. CAN BE OBTAINED. CONVENTIONAL INGREDIENTS OF MOLDING COMPOUNDS SUCH AS FILLERS AND MOLD LUBRICANTS CAN BE INCORPORATED WITH THE COMPOSITION. THE COMPOSITION CAN BE WORKED WITHOUT CURING UP TO A TEMPERATURE OF ABOUT 150* C. AND CURED AT HIGHER TEMPERATURES.
Inventors
- 👤 Robert J Schaffhauser
- 👤 Charles D Mason
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |