Patent US2818459A successfully refreshed from Google Patents.
US2818459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylation of paraffin hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1956-05-14
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Granted: 1957-12-31
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Expires: 1976-05-14
Abstract
No abstract record available.
Inventors
- 👤 James E Gantt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:31
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/56; C07C2/58; C07C2/62; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
AN IMPROVED PROCESS FOR PRODUCING A HIGH ANTIKNOCK HYDROCARBON FRACTION BY REACTION AN ISOPARAFFIN AND AN OLEFIN IN THE PRESENCE OF A HYDROGEN FLUORIDE ALKYLATION CATALYST WHICH COMPRISES FRACTIONATING A MIXED N-PARAFFIN ISOPARAFFIN STREAM AND AN ISOPARAFFIN-LEAN PARAFFIN STREAM PRODUCED AS HEREINAFTER DESCRIBED IN A FRACTIONATION ZONE TO PRODUCE A SUBSTANTIALLY N-PARAFFIN-FREE ISOPARAFFIN OVERHEAD FRACTION AND A SUBSTANTIALLY ISOPARAFFIN-FREE N-PARAFFIN BOTTOMS FRACTION, CONTACTING SAID ISOPARAFFIN FRACTION WITH AN ISOPARAFFIN-RICH PARAFFIN RECYCLE FRACTION PRODUCED AS HEREINAFTER DESCRIBED AND AN OLEFIN IN THE REACTION ZONE IN LIQUID PHASE IN THE PRESENCE OF A HYDROGEN FLUORIDE ALKYLATION CATALYST, SEPARATING FROM EFFLUENTS OF SAID REACTION ZONE A LIQUID PHASE COMPRISING PRIMARILY HYDROGEN FLUORIDE ALKYLATION CATALYST AND A LIQUID HYDROCARBON PHASE CONTAINING DISSOLVED HYDROGEN FLUORIDE AND COMPRISING A LARGE EXCESS OF UNREACTED ISOPARAFFIN, N-PARAFFIN, AND RESULTING HIGHER BOILING HYDROCARBONS, PASSING SAID LIQUID HYDROCARBON PHASE DIRECTLY TO THE TOP SECTION OF A STRIPPING MEANS, SEPARATING THEREFROM AN ISOPARAFFIN-RICH PARAFFIN FRACTION OVER-
Claim 2
Dependent Claim
155 words
AN IMPROVED PROCESS FOR PRODUCING A HIGH ANTIKNOCK HYDROCARBON FRACTION BY REACTION AN ISOPARAFFIN AND AN OLEFIN IN THE PRESENCE OF A HYDROGEN FLUORIDE ALKYLATION CATALYST WHICH COMPRISES FRACTIONATING A MIXED N-PARAFFIN ISOPARAFFIN STREAM AND AN ISOPARAFFIN-LEAN PARAFFIN STREAM PRODUCED AS HEREINAFTER DESCRIBED IN A FRACTIONATION ZONE TO PRODUCE A SUBSTANTIALLY N-PARAFFIN-FREE ISOPARAFFIN OVERHEAD FRACTION AND A SUBSTANTIALLY ISOPARAFFIN-FREE N-PARAFFIN BOTTOMS FRACTION, CONTACTING SAID ISOPARAFFIN FRACTION WITH AN ISOPARAFFIN-RICH PARAFFIN RECYCLE FRACTION PRODUCED AS HEREINAFTER DESCRIBED AND AN OLEFIN IN THE REACTION ZONE IN LIQUID PHASE IN THE PRESENCE OF A HYDROGEN FLUORIDE ALKYLATION CATALYST, SEPARATING FROM EFFLUENTS OF SAID REACTION ZONE A LIQUID PHASE COMPRISING PRIMARILY HYDROGEN FLUORIDE ALKYLATION CATALYST AND A LIQUID HYDROCARBON PHASE CONTAINING DISSOLVED HYDROGEN FLUORIDE AND COMPRISING A LARGE EXCESS OF UNREACTED ISOPARAFFIN, N-PARAFFIN, AND RESULTING HIGHER BOILING HYDROCARBONS, PASSING SAID LIQUID HYDROCARBON PHASE DIRECTLY TO THE TOP SECTION OF A STRIPPING MEANS, SEPARATING THEREFROM AN ISOPARAFFIN-RICH PARAFFIN FRACTION OVER-
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) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |