US3855346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of paraffinic hydrocarbons with trifluoromethanesulfonic acid
Assignee: Phillips Petroleum Co
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Filing: 1972-01-28
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Granted: 1974-12-17
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Expires: 1992-01-28
Abstract
Abstract Paraffinic hydrocarbons are converted to other hydrocarbons by contacting with a catalyst comprising trifluoromethanesulfonic acid. In another embodiment, normal paraffins are isomerized with high selectivity to skeletal isomers containing the same number of carbon atoms by contacting same with a catalyst comprising trifluoromethanesulfonic acid and a Group Vb metal fluoride.
Inventors
- 👤 J Norell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:28
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2794
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
30 words
A PROCESS FOR THE ISOMERIZATION OF PARAFFINIC HYDROCARBONS WHICH COMPRISES CONTACTING A FEED COMPRISING PARAFFINIC HYDROCARBONS IN A CONVERSION ZONE AT ISOMERIZATION CONDITIONS WITH A CATALYST CONSISTING OF TRIFLUOROMETHANESULFONIC ACID.
Claim 2
Dependent Claim
30 words
A PROCESS FOR THE ISOMERIZATION OF PARAFFINIC HYDROCARBONS WHICH COMPRISES CONTACTING A FEED COMPRISING PARAFFINIC HYDROCARBONS IN A CONVERSION ZONE AT ISOMERIZATION CONDITIONS WITH A CATALYST CONSISTING OF TRIFLUOROMETHANESULFONIC ACID.
Claim 3
Dependent Claim
13 words
A process according to claim 1 wherein the paraffinic hydrocarbon is normal hexane.
Claim 4
Dependent Claim
49 words
A process according to claim 1 wherein said feed comprises paraffinic hydrocarbons having from 4 to 7, inclusive, carbon atoms per molecule and said contacting is effected at a temperature in the range of 0-100*C and a pressure Sufficient to maintain the reactants and catalyst in the liquid phase.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |