US2897163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polymeric materials from polyoxyalkylene polyols and butadiene diepoxide
Assignee: Union Carbide Corp
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Filing: 1956-07-09
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Granted: 1959-07-28
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Expires: 1976-07-09
Abstract
No abstract record available.
Inventors
- 👤 Jared W Clark
- 👤 Alfred E Winslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:09
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/681; C08G59/682; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCESS FOR PRODUCING A HIGH MOLECULAR WEIGHT POLYHYDRIC OXYHYDROCARBON PRODUCT WHICH COMPRISES HEATING AND REACTING A POLYOXYALKYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 600 WITH BUTADIENE DIEPOXIDE IN THE PRESENCE OF AN ALKALI METAL ALCOHOLATE OF THE POLYOXYALKYLENE GLYCOL, SAID BUTADIENE DIEPOXIDE BEING PRESENT IN AMOUNTS FROM ABOUT 0.2 MOLE TO ABOUT 20 MOLES PER MOLE OF POLYOXYALKYLENE GLYCOL AT A TEMPERATURE OF FROM ABOUT 25*C. TO ABOUT 250*C.
Claim 2
Dependent Claim
73 words
A PROCESS FOR PRODUCING A HIGH MOLECULAR WEIGHT POLYHYDRIC OXYHYDROCARBON PRODUCT WHICH COMPRISES HEATING AND REACTING A POLYOXYALKYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF AT LEAST 600 WITH BUTADIENE DIEPOXIDE IN THE PRESENCE OF AN ALKALI METAL ALCOHOLATE OF THE POLYOXYALKYLENE GLYCOL, SAID BUTADIENE DIEPOXIDE BEING PRESENT IN AMOUNTS FROM ABOUT 0.2 MOLE TO ABOUT 20 MOLES PER MOLE OF POLYOXYALKYLENE GLYCOL AT A TEMPERATURE OF FROM ABOUT 25*C. TO ABOUT 250*C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |