Patent US2809927A successfully refreshed from Google Patents.
US2809927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of sec-butyl ether from polymeric hydrocarbons
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-10-27
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Granted: 1957-10-15
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Expires: 1975-10-27
Abstract
No abstract record available.
Inventors
- 👤 John H Staib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:49
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR SEPARATING SECONDARY BUTYL ETHER FROM A MIXTURE CONTAINING IT IN MINOR AMOUNTS, AND ALSO CONTAINING C8 POLYMERIC HYDROCARBONS COMPRISING 2,3,4, TRIMETHYL PENTENE-1,2,3,4 TRIMETHYL PENTENE-2,3,4,4 TRIMETHYL PENTENE-1, AND 3,4,4 TRIMETHYL PENTENE-2, AND A MAJOR AMOUNT OF SECONDARY BUTYL ALCOHOL, WHICH COMPRISES DISTILLING SAID MIXTURE TO TAKE OVERHEAD A COMPOSITION CONTAINING A MAJOR AMOUNT TO SECONDARY BUTYL ALCOHOL, MINOR AMOUNTS OF SECONDARY BUTYL ETHER AND SAID C8 HYDROCARBONS, WASHING SAID COMPOSITION WITH WATER AT ELEVATED TEMPERATURES TO REMOVE MOST OF THE ALCOHOLS THEREFROM, LEAVING A WATER WASHED COMPOSITION CONTAINING SEVERAL AZEOTROPIC MIXTURES COMPRISING SAID C8 POLYMERIC HYDROCARBONS AND SECONDARY BUTYL ETHERE, DISTILLING THE WATER WASHED COMPOSITION AT 10-20 ATMOSPHERES PRESSURE AND RECOVERING AS A PRODUCT SECONDARY BUTYL ETHER OF HIGH PURITY.
Claim 2
Dependent Claim
122 words
A PROCESS FOR SEPARATING SECONDARY BUTYL ETHER FROM A MIXTURE CONTAINING IT IN MINOR AMOUNTS, AND ALSO CONTAINING C8 POLYMERIC HYDROCARBONS COMPRISING 2,3,4, TRIMETHYL PENTENE-1,2,3,4 TRIMETHYL PENTENE-2,3,4,4 TRIMETHYL PENTENE-1, AND 3,4,4 TRIMETHYL PENTENE-2, AND A MAJOR AMOUNT OF SECONDARY BUTYL ALCOHOL, WHICH COMPRISES DISTILLING SAID MIXTURE TO TAKE OVERHEAD A COMPOSITION CONTAINING A MAJOR AMOUNT TO SECONDARY BUTYL ALCOHOL, MINOR AMOUNTS OF SECONDARY BUTYL ETHER AND SAID C8 HYDROCARBONS, WASHING SAID COMPOSITION WITH WATER AT ELEVATED TEMPERATURES TO REMOVE MOST OF THE ALCOHOLS THEREFROM, LEAVING A WATER WASHED COMPOSITION CONTAINING SEVERAL AZEOTROPIC MIXTURES COMPRISING SAID C8 POLYMERIC HYDROCARBONS AND SECONDARY BUTYL ETHERE, DISTILLING THE WATER WASHED COMPOSITION AT 10-20 ATMOSPHERES PRESSURE AND RECOVERING AS A PRODUCT SECONDARY BUTYL ETHER OF HIGH PURITY.
References Cited (Backward Citations)
US2392534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |