US2513244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of polymerizing butadiene-1, 3
Assignee: Standard Oil Development Co
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Filing: 1945-12-31
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Granted: 1950-06-27
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Expires: 1965-12-31
Abstract
No abstract record available.
Inventors
- 👤 Miller W Swaney
- 👤 Anthony H Gleason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:53
CPC Classifications
C; C08; C08F; C08F36/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
THE PROCESS OF PREPARING RESIN-CONTAINING POLYMERIZATION PRODUCTS WHICH COMPRISES HEATING A DIOLEFIN OF THE GROUP CONSISTING OF BUTADIENE-1,3 AND PIPERYLENE AT A TEMPERATURE BETWEEN 130* AND 200*C. UNTIL MAJOR PROPORTION OF THE DIOLEFIN IS CONVERTED TO A CYCLIC DIMER, INCREASING THE TEMPERATURE TO BETWEEN 280* AND 400*C. AND MAINTAINING THE REACTION MIXTURE AT THIS TEMPERATURE IN THE ABSENCE OF OXYGEN UNTIL THE DIMER IS CONVERTED TO A RESIN-CONTAINING PRODUCT.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |