US3141854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of catalysts for the polymerization of epoxides
Assignee: Union Carbide Corp
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Filing: 1960-06-29
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Granted: 1964-07-21
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Expires: 1980-06-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick E Bailey
- 👤 Haywood G France
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:24
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0215; B01J31/26; C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2645; C08G65/2651; C08G65/269; B01J2231/00; B01J2231/10; B01J27/00; B01J27/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 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 DIALKYL SULFOXIDE, BASED ON 1.0 MOL OF SAID ALKALINE EARTH METAL HEXAMMONIATE, SAID DIALKYL SULFOXIDE CONTAINING FROM TWO TO SIX HYDROGEN ATOMS MONOVALENT BONDED TO THE CARBON ATOMS WHICH ARE ALPHA TO THE SULFINYL GROUP, SAID OLEFIN OXIDE BEING FREE FROM ETHYLENE AND ACETYLENIC UNSATURATION AND BEING COMPOSED OF CARBON, HYDROGEN, AND A SINGLE OXIRANE GROUP, SAID REACTION BEING CONDUCTED IN AN EXCESS LIQUID AMMONIA MEDIUM, AND SUBSEQUENTLY EVAPORATING FROM THE RESULTING PRODUCT MIXTURE THE EXCESS LIQUID AMMONIA.
Claim 2
Dependent Claim
105 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 DIALKYL SULFOXIDE, BASED ON 1.0 MOL OF SAID ALKALINE EARTH METAL HEXAMMONIATE, SAID DIALKYL SULFOXIDE CONTAINING FROM TWO TO SIX HYDROGEN ATOMS MONOVALENT BONDED TO THE CARBON ATOMS WHICH ARE ALPHA TO THE SULFINYL GROUP, SAID OLEFIN OXIDE BEING FREE FROM ETHYLENE AND ACETYLENIC UNSATURATION AND BEING COMPOSED OF CARBON, HYDROGEN, AND A SINGLE OXIRANE GROUP, SAID REACTION BEING CONDUCTED IN AN EXCESS LIQUID AMMONIA MEDIUM, AND SUBSEQUENTLY EVAPORATING FROM THE RESULTING PRODUCT MIXTURE THE EXCESS LIQUID AMMONIA.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |