Patent US4714787A successfully refreshed from Google Patents.
US4714787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of ethers from linear olefins
Assignee: Mobil Oil AS
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Filing: 1985-09-03
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Granted: 1987-12-22
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Expires: 2005-09-03
Abstract
Abstract A catalytic process is provided for the manufacture of ethers by reacting a linear monoolefin with a primary or secondary alcohol having up to 4 carbon atoms. The process selectively forms methyl isopropyl ether from a propylene feed and methanol by contact with a zeolite such as Zeolite Beta or ZSM-5, or by contact with a macroreticular sulfonated ion-exchange resin.
Inventors
- 👤 Weldon K. Bell
- 👤 Werner O. Haag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:25
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/01; C07C41/05; C07C41/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
A process for the manufacture of methyl isopropyl ether from methanol and a C 3 hydrocarbon fraction that contains about 20 to 100 wt % of propylene, which process comprises: preparing a mixture of said hydrocarbon fraction and 0.1 to 10 mols of methanol per mol of propylene contained in said fraction, contacting said mixture with a solid insoluble acidic catalyst comprising materials having the structure of Zeolite Beta, said contacting being effected under a combination of conditions effective to selectively form said ether, said conditions including 1.0 to 300 atmospheres pressure, a temperature of 50° C. to about 300° C., and a WHSV of 0.5 to 50, and recovering from said contacted mixture a fraction comprising methyl isopropyl ether.
Claim 2
Dependent Claim
120 words
A process for the manufacture of methyl isopropyl ether from methanol and a C 3 hydrocarbon fraction that contains about 20 to 100 wt % of propylene, which process comprises: preparing a mixture of said hydrocarbon fraction and 0.1 to 10 mols of methanol per mol of propylene contained in said fraction, contacting said mixture with a solid insoluble acidic catalyst comprising materials having the structure of Zeolite Beta, said contacting being effected under a combination of conditions effective to selectively form said ether, said conditions including 1.0 to 300 atmospheres pressure, a temperature of 50° C. to about 300° C., and a WHSV of 0.5 to 50, and recovering from said contacted mixture a fraction comprising methyl isopropyl ether.
Claim 3
Dependent Claim
63 words
The process of claim 1 wherein said C 3 hydrocarbon fraction contains about 90 to 100 wt % propylene; wherein said mixture contains 0.5 to 2.0 mols of methanol per mol of propylene; and wherein said contacting is at a temperature of 100° C. to 210° C., a total pressure of 10 to 100 atm, and a WHSV of about 0.5 to 10.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein said zeolite is in the hydrogen form.
Claim 5
Dependent Claim
13 words
The process of claim 2 wherein said zeolite is in the hydrogen form.
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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) | 1990-12-21 | 1991-06-22 | 1991-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-21 | 1995-06-22 | 1995-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-21 | 1999-06-22 | 1999-12-22 | $7700.00 | Window Closed / Lapsed |