US4409418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization process
Assignee: Phillips Petroleum Co
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Filing: 1982-07-07
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Granted: 1983-10-11
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Expires: 2002-07-07
Abstract
Abstract An aliphatic mono-olefin e.g. butene-2, is isomerized in the presence of a catalyst comprising essentially zirconium phosphate and at least one of chromium and thorium to produce the corresponding terminal olefin selectively.
Inventors
- 👤 Marvin M. Johnson
- 👤 Gerhard P. Nowack
- 👤 Semyon Kukes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:40
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1804; B01J27/186; B01J27/188; C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2525; C07C5/2537
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
51 words
A process for the isomerization of an aliphatic mono-olefin hydrocarbon feed to shift an internal double bond therein to produce a corresponding terminal olefin which comprises subjecting said mono-olefin hydrocarbon feed under isomerization conditions to the action of a catalyst comprising zirconium phosphate and at least one of chromium and thorium.
Claim 2
Dependent Claim
51 words
A process for the isomerization of an aliphatic mono-olefin hydrocarbon feed to shift an internal double bond therein to produce a corresponding terminal olefin which comprises subjecting said mono-olefin hydrocarbon feed under isomerization conditions to the action of a catalyst comprising zirconium phosphate and at least one of chromium and thorium.
Claim 3
Dependent Claim
21 words
A process according to claim 1 wherein the mono-olefin is at least one having from 4 to 20 inclusive carbon atoms.
Claim 4
Dependent Claim
17 words
A process according to claim 2 wherein the mono-olefins are inclusive of a substantial portion of butene-2.
Claim 5
Dependent Claim
20 words
A process according to claim 1 wherein the isomerization conditions include a temperature in the range of about 300°-1100° F.
Claim 6
Dependent Claim
15 words
A process according to claim 1 wherein the catalyst is zirconium phosphate promoted with chromium.
Claim 7
Dependent Claim
15 words
A process according to claim 1 wherein the catalyst is zirconium phosphate promoted with thorium.
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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) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |