US3242641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of polymerizable olefin hydrocarbons
Assignee: Monsanto Co
•
Filing: 1962-10-24
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Granted: 1966-03-29
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Expires: 1982-10-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Earle C Makin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:53
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; C07C7/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR THE PURIFICATION OF POLYMERIZABLE OLEFIN HYDROCARBONS CONTAINING AS IMPURITIES WATER AND OXYGEN WHICH COMPRISES CONTACTING SAID POLYMERIZABLE OLEFIN HYDROCARBONS WITH A MOLECUALR SIEVE SELECTED FROM THE GROUP CONSISTING OF ALKALI METALLO-ALUMINO-SILICATES AND ALKALINE EARTH METALLO-ALUMINO-SILICATES AND ALKALINE EARTH METALLO-ALUMINO-SILICATES WHEREIN AT LEAST A PORTION OF THE ALKALI AND ALKALINE EARTH IONS HAVE BEEN REPLACED BY ION EXCHANGE WITH A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, SILVER AND LEAD, AT A TEMPERATURES OF APPROXIMATELY 0 TO 200*C. AND A PRESSURE OF FROM ATMOSPHERIC PRESSURE TO THE PRESSURE AT THE DEW POINT OF THE POLYMERIZABLE OLEFIN HYDROCARBONS AT THE TEMPERATURE OF OPERATING AND RECOVERING SAID POLYMERIZABLE OLEFINS SUBSTNATIALLY FREE OF SAID IMPURITIES.
Claim 2
Dependent Claim
115 words
A PROCESS FOR THE PURIFICATION OF POLYMERIZABLE OLEFIN HYDROCARBONS CONTAINING AS IMPURITIES WATER AND OXYGEN WHICH COMPRISES CONTACTING SAID POLYMERIZABLE OLEFIN HYDROCARBONS WITH A MOLECUALR SIEVE SELECTED FROM THE GROUP CONSISTING OF ALKALI METALLO-ALUMINO-SILICATES AND ALKALINE EARTH METALLO-ALUMINO-SILICATES AND ALKALINE EARTH METALLO-ALUMINO-SILICATES WHEREIN AT LEAST A PORTION OF THE ALKALI AND ALKALINE EARTH IONS HAVE BEEN REPLACED BY ION EXCHANGE WITH A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, SILVER AND LEAD, AT A TEMPERATURES OF APPROXIMATELY 0 TO 200*C. AND A PRESSURE OF FROM ATMOSPHERIC PRESSURE TO THE PRESSURE AT THE DEW POINT OF THE POLYMERIZABLE OLEFIN HYDROCARBONS AT THE TEMPERATURE OF OPERATING AND RECOVERING SAID POLYMERIZABLE OLEFINS SUBSTNATIALLY FREE OF SAID IMPURITIES.
References Cited (Backward Citations)
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US2885368A
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US2971904A
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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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |