Patent US3274129A successfully refreshed from Google Patents.
US3274129A
Expired / Lapsed
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Polymerization of epoxides
Assignee: Union Carbide Corp
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Filing: 1959-06-29
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Granted: 1966-09-20
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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
2026-10-26 22:32
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2645; C08G65/2651
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A POLYMERIZATION PROCESS WHICH COMPRISES CONTACTING A LOWER OLEFIN OXIDE WITH FROM ABOUT 0.1 TO ABOUT 10.0 WEIGHT PERCENT, BASED ON THE SAID LOWER OLEFIN OXIDE, OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHATES, ALUMINATES, ORATES AND MOLYBDATES OF DIVALENT METALS HAVING AN ATOMIC NUMBER GREATER THAN 11 AND LESS THAN 57 OF GROUP II OF HE PERIODIC TABLE; AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 50* TO ABOUT 150* C. FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A SOLID POLYMER OF SAID LOWER OLEFIN OXIDES HAVNG A REDUCED VISCOSITY VALUE OF FROM 0.57 TO 12.3 DETERMINED AT A CONCENTRATION OF 0.2 GRAM OF POLYMER PER 100 MILLITERS OF ACETONITRILE AT 300*C.
Claim 2
Dependent Claim
117 words
A POLYMERIZATION PROCESS WHICH COMPRISES CONTACTING A LOWER OLEFIN OXIDE WITH FROM ABOUT 0.1 TO ABOUT 10.0 WEIGHT PERCENT, BASED ON THE SAID LOWER OLEFIN OXIDE, OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF PHOSPHATES, ALUMINATES, ORATES AND MOLYBDATES OF DIVALENT METALS HAVING AN ATOMIC NUMBER GREATER THAN 11 AND LESS THAN 57 OF GROUP II OF HE PERIODIC TABLE; AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 50* TO ABOUT 150* C. FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A SOLID POLYMER OF SAID LOWER OLEFIN OXIDES HAVNG A REDUCED VISCOSITY VALUE OF FROM 0.57 TO 12.3 DETERMINED AT A CONCENTRATION OF 0.2 GRAM OF POLYMER PER 100 MILLITERS OF ACETONITRILE AT 300*C.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |