US3244646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of epoxides using as catalyst a metal alkoxide-phosphorous acid reaction product
Assignee: ExxonMobil Oil Corp
•
Filing: 1962-01-04
•
Granted: 1966-04-05
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Expires: 1982-01-04
Abstract
No abstract record available.
Inventors
- 👤 Paul A Naro
- 👤 Robert D Offenhauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:40
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2645; C08G65/266; C08G65/269
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS WHICH COMPRISES POLYNEIZING A VICINAL MONOEPOXIDE COMPOUND FREE FROM ETHYLENIC AND ACETYLENIC UNSATURATION IN THE PRESENCE OF ABOUT 0.005 TO 15 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE MONOEPOXIDE COMPOUND, OF A CATALYST CONTAINING AT LEAST ABOUT 5 WEIGHT PERCENT CARBON PREPARED BY THE REACTION IN AN INERT ORGANIC LIQUID MEDIUM OF AT LEAST ABOUT A 1 TO 1 MOLAR RATIO OF A METAL ALKOXIDE CONTAINING FROM 3 TO 18 CARBON ATOMS WITH THE METAL BEING SELECTED FROM THE GROUP CONSISTING OF BORON, ALUMINUM, GALLIUM, INDIUM AND THALLIUM, WITH A PHOSPHOROUS-CONTAINING ACID HAVING THE FORMULA:
Claim 2
Dependent Claim
98 words
A PROCESS WHICH COMPRISES POLYNEIZING A VICINAL MONOEPOXIDE COMPOUND FREE FROM ETHYLENIC AND ACETYLENIC UNSATURATION IN THE PRESENCE OF ABOUT 0.005 TO 15 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE MONOEPOXIDE COMPOUND, OF A CATALYST CONTAINING AT LEAST ABOUT 5 WEIGHT PERCENT CARBON PREPARED BY THE REACTION IN AN INERT ORGANIC LIQUID MEDIUM OF AT LEAST ABOUT A 1 TO 1 MOLAR RATIO OF A METAL ALKOXIDE CONTAINING FROM 3 TO 18 CARBON ATOMS WITH THE METAL BEING SELECTED FROM THE GROUP CONSISTING OF BORON, ALUMINUM, GALLIUM, INDIUM AND THALLIUM, WITH A PHOSPHOROUS-CONTAINING ACID HAVING THE FORMULA:
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |