Patent EP0049768A1 successfully refreshed from Google Patents.
US3250819A
Expired / Lapsed
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Isomerization process for forming a cycloparaffin
Assignee: Phillips Petroleum Co
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Filing: 1964-09-14
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Granted: 1966-05-10
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Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 John T Cabbage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:24
CPC Classifications
C; C07; C07C; C07C13/00; C07C13/02; C07C13/16; C07C13/18; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/271; C07C5/2718; C07C5/2721; C07C5/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A METHOD FOR PRODUCING A CYCLOPARAFFIN COMPRISING PROVIDING A HYDROCARBON FEED WHICH HAS FROM 50 TO 100 VOLUME PERCENT OF AROMATIC, ISOPARAFFIN, N-PARAFFIN AND ISOCYCLIC HYDROCARBON CONSTITUENTS EACH HAVING 6 CARBON ATOMS, CONTACTING SAID FEED WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST TO CONVERT UNSATURATED CONSTITUENTS OF SATURATED CONSTITUENTS AND THEREBY PRODUCE A HYDROGENATED PRODUCT, HEATING THE HYDROGENATED PRODUCT AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF A FIXED BED ISOMERIZATION CATALYST AND UNDER REACTION CONDITIONS WHICH FAVOR THE CONVERSION OF NORMAL PARAFFINS TO ISOPARAFFINS AND THEREBY PRODUCE A FIRST ISOMERIZATION PRODUCT RICH IN ISOPARAFFINS, FRACTIONATING SAID FIRST ISOMERIZATION PRODUCT TO REMOVE THEREFROM LOWER BOILING ISOPARAFFINS AND THEREBY PRODUCE AN ISOPARAFFIN LEAN PRODUCT, REACTING SAID ISOPARAFFIN LEAN PRODUCT IN THE PRESENCE OF AN ALUMINUM HALIDE-COMPLEX ISOMERIZATION CATALYST AND UNDER REACTION CONDITIONS WHICH FAVOR THE CONVERSION OF ISOCYCLIC CONSTITUENTS TO CYCLOPARAFFINS AND THEREBY PRODUCE A SECOND ISMERIZATION PRODUCT RICH IN CYCLOPARAFFINS, AND SEPARATING FROM SAID SECOND ISOMERIZATION PRODUCT CYCLOPARAFFINS AS A PRODUCT OF THE METHOD.
Claim 2
Independent Claim
166 words
A METHOD FOR PRODUCING A CYCLOPARAFFIN COMPRISING PROVIDING A HYDROCARBON FEED WHICH HAS FROM 50 TO 100 VOLUME PERCENT OF AROMATIC, ISOPARAFFIN, N-PARAFFIN AND ISOCYCLIC HYDROCARBON CONSTITUENTS EACH HAVING 6 CARBON ATOMS, CONTACTING SAID FEED WITH HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST TO CONVERT UNSATURATED CONSTITUENTS OF SATURATED CONSTITUENTS AND THEREBY PRODUCE A HYDROGENATED PRODUCT, HEATING THE HYDROGENATED PRODUCT AT AN ELEVATED TEMPERATURE IN THE PRESENCE OF A FIXED BED ISOMERIZATION CATALYST AND UNDER REACTION CONDITIONS WHICH FAVOR THE CONVERSION OF NORMAL PARAFFINS TO ISOPARAFFINS AND THEREBY PRODUCE A FIRST ISOMERIZATION PRODUCT RICH IN ISOPARAFFINS, FRACTIONATING SAID FIRST ISOMERIZATION PRODUCT TO REMOVE THEREFROM LOWER BOILING ISOPARAFFINS AND THEREBY PRODUCE AN ISOPARAFFIN LEAN PRODUCT, REACTING SAID ISOPARAFFIN LEAN PRODUCT IN THE PRESENCE OF AN ALUMINUM HALIDE-COMPLEX ISOMERIZATION CATALYST AND UNDER REACTION CONDITIONS WHICH FAVOR THE CONVERSION OF ISOCYCLIC CONSTITUENTS TO CYCLOPARAFFINS AND THEREBY PRODUCE A SECOND ISMERIZATION PRODUCT RICH IN CYCLOPARAFFINS, AND SEPARATING FROM SAID SECOND ISOMERIZATION PRODUCT CYCLOPARAFFINS AS A PRODUCT OF THE METHOD.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |