US2861962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the polymerization of olefin oxides with ferric compounds
Assignee: Dow Chemical Co
•
Filing: 1957-06-05
•
Granted: 1958-11-25
•
Expires: 1977-06-05
Abstract
No abstract record available.
Inventors
- 👤 Borkovec Alexej Buhumil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:21
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2645; C08G65/266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
PROCESS FOR POLYMERIZING A LOWER VICINAL OLEFIN OXIDE THAT DOES NOT CONTAIN MORE THAN 4 CARBON ATOMS IN ITS MOLECULE TO FORM A SOLID POLYMERIC MATERIAL WHICH COMPRISES MIXING THE OXIDE WITH A MINOR PROPORTION OF A CATALYST COMPOUND HAVING THE GENERAL EMPIRICAL FORMULA: FE(OH)Z(OZ)3-X, WHEREIN X IS SELECTED FROM FROM THE GROUP CONSISTING OF ALKYL RADICALS CONTAING UP TO 6 CARBON ATOMS, HALOALKYL RADICALS CONTAINING UP TO 6 CARBON ATOMS, AND AROMATIC HYDROCARBON RADICALS CONTAINING FROM 6 TO 10 CARBON ATOMS AND WHEREIN X IS A POSITIVE NUMBER HAVING A VALUE GREATER THAN ZERO BUT LESS THAN THREE, AND HEATING THE MIXTURE TO MAINTAIN IT AT A TEMPERTURE BETWEEN ABOUT 40*C. AND 150*C. FOR A SUFFICIENT PERIOD OF TIME TO POLYMERIZE THE OXIDE.
Claim 2
Dependent Claim
124 words
PROCESS FOR POLYMERIZING A LOWER VICINAL OLEFIN OXIDE THAT DOES NOT CONTAIN MORE THAN 4 CARBON ATOMS IN ITS MOLECULE TO FORM A SOLID POLYMERIC MATERIAL WHICH COMPRISES MIXING THE OXIDE WITH A MINOR PROPORTION OF A CATALYST COMPOUND HAVING THE GENERAL EMPIRICAL FORMULA: FE(OH)Z(OZ)3-X, WHEREIN X IS SELECTED FROM FROM THE GROUP CONSISTING OF ALKYL RADICALS CONTAING UP TO 6 CARBON ATOMS, HALOALKYL RADICALS CONTAINING UP TO 6 CARBON ATOMS, AND AROMATIC HYDROCARBON RADICALS CONTAINING FROM 6 TO 10 CARBON ATOMS AND WHEREIN X IS A POSITIVE NUMBER HAVING A VALUE GREATER THAN ZERO BUT LESS THAN THREE, AND HEATING THE MIXTURE TO MAINTAIN IT AT A TEMPERTURE BETWEEN ABOUT 40*C. AND 150*C. FOR A SUFFICIENT PERIOD OF TIME TO POLYMERIZE THE OXIDE.
References 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) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |