Patent US3030316A successfully refreshed from Google Patents.
US3030316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of epoxides
Assignee: Union Carbide Corp
•
Filing: 1959-06-29
•
Granted: 1962-04-17
•
Expires: 1979-06-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick E Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:16
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A PROCESS WHICH COMPRISES CONTACTING A LOWER OLEFIN OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, 1,2-EPOXYBUTANE, 2,3-EPOXYBU TANE, AND MIXTURES THEREOF; WITH FROM ABOUT 0.01 TO ABOUT 10.0 WEIGHT PERCENT, BASED ON THE WEIGHT OF SAID LOWER OLEFIN OXIDE, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF TIN TETRA-ALKOXIDE AND TRIALKYLANTIMONY, AS THE CATALYST FOR POLYMERIZING SAID LOWER OLEFIN OXIDE; AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 50* TO ABOUT 150* C., AND FOR A PERIOD OF TIME SUFFICIENT TO PRODUCT A POLYMER.
Claim 2
Dependent Claim
90 words
A PROCESS WHICH COMPRISES CONTACTING A LOWER OLEFIN OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, 1,2-EPOXYBUTANE, 2,3-EPOXYBU TANE, AND MIXTURES THEREOF; WITH FROM ABOUT 0.01 TO ABOUT 10.0 WEIGHT PERCENT, BASED ON THE WEIGHT OF SAID LOWER OLEFIN OXIDE, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF TIN TETRA-ALKOXIDE AND TRIALKYLANTIMONY, AS THE CATALYST FOR POLYMERIZING SAID LOWER OLEFIN OXIDE; AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 50* TO ABOUT 150* C., AND FOR A PERIOD OF TIME SUFFICIENT TO PRODUCT A POLYMER.
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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |