US2969402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of catalysts for the polymerization of epoxides
Assignee: Union Carbide Corp
•
Filing: 1958-12-29
•
Granted: 1961-01-24
•
Expires: 1978-12-29
Abstract
No abstract record available.
Inventors
- 👤 Fred N Hill
- 👤 John T Fitzpatrick
- 👤 Jr Frederick E Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:39
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/68; C07F; C07F3/00; C07F3/003; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2645; C08G65/2651
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS WHICH COMPRISES REACTING ALKALINE EARTH METAL HEXAMMONIATE WITH FROM ABOUT 0.3 TO 1.0 MOL OF OLEFIN OXIDE AND FROM ABOUT 0.2 TO 0.8 MOL OF A SATURATED ALIPHATIC HYDROCARBON NITRILE, BASED ON 1.0 MOL OF SAID ALKALINE EARTH METAL HEXAMMONIATE, SAID REACTION BEING CONDUCTED IN AN EXCESS LIQUID AMMONIA MEDIUM, AND SUBSEQUENTLY EVAPORATING FROM THE RESULTING PRODUCT MIXTURE THE EXCESS LIQUID AMMONIA THEREBY OBTAINING A RESIDUE PRODUCT WHICH IS CATALYTICALLY ACTIVE IN EFFECTING THE POLYMERIZATION OF ETHYLENE OXIDE.
Claim 2
Dependent Claim
80 words
A PROCESS WHICH COMPRISES REACTING ALKALINE EARTH METAL HEXAMMONIATE WITH FROM ABOUT 0.3 TO 1.0 MOL OF OLEFIN OXIDE AND FROM ABOUT 0.2 TO 0.8 MOL OF A SATURATED ALIPHATIC HYDROCARBON NITRILE, BASED ON 1.0 MOL OF SAID ALKALINE EARTH METAL HEXAMMONIATE, SAID REACTION BEING CONDUCTED IN AN EXCESS LIQUID AMMONIA MEDIUM, AND SUBSEQUENTLY EVAPORATING FROM THE RESULTING PRODUCT MIXTURE THE EXCESS LIQUID AMMONIA THEREBY OBTAINING A RESIDUE PRODUCT WHICH IS CATALYTICALLY ACTIVE IN EFFECTING THE POLYMERIZATION OF ETHYLENE OXIDE.
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) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |